Winit version 0.30.7

x11: fix KeyboardInput delivered twice with IME
The filtered events were still processed even though they shouldn't once we know that they're filtered. Fixes #4048.
2026-06-26 22:53:15 -04:00 · 2024-12-22 23:00:41 +03:00 · 2024-12-22 23:00:41 +03:00 · 2024-12-21 09:05:36 +03:00 · 2024-12-21 09:05:36 +03:00 · 2024-12-21 09:05:36 +03:00
101 changed files with 3348 additions and 2080 deletions
--- a/.github/CODEOWNERS
+++ b/.github/CODEOWNERS
@@ -2,10 +2,9 @@
 /src/platform/android.rs            @MarijnS95
 /src/platform_impl/android          @MarijnS95

-# Apple (AppKit + UIKit)
+# iOS
 /src/platform/ios.rs                @madsmtm
-/src/platform/macos.rs              @madsmtm
-/src/platform_impl/apple            @madsmtm
+/src/platform_impl/ios              @madsmtm

 # Unix
 /src/platform_impl/linux/mod.rs     @kchibisov
@@ -18,6 +17,10 @@
 /src/platform/x11.rs                @kchibisov @notgull
 /src/platform_impl/linux/x11        @kchibisov @notgull

+# macOS
+/src/platform/macos.rs              @madsmtm
+/src/platform_impl/macos            @madsmtm
+
 # Web
 /src/platform/web.rs                @daxpedda
 /src/platform_impl/web              @daxpedda
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -42,7 +42,7 @@ jobs:
    strategy:
      fail-fast: false
      matrix:
-        toolchain: [stable, nightly, '1.73']
+        toolchain: [stable, nightly, '1.70.0']
        platform:
          # Note: Make sure that we test all the `docs.rs` targets defined in Cargo.toml!
          - { name: 'Windows 64bit MSVC', target: x86_64-pc-windows-msvc,   os: windows-latest,  }
@@ -61,10 +61,10 @@ jobs:
          - { name: 'web',                target: wasm32-unknown-unknown,   os: ubuntu-latest,   }
        exclude:
          # Android is tested on stable-3
-          - toolchain: '1.73'
+          - toolchain: '1.70.0'
            platform: { name: 'Android', target: aarch64-linux-android, os: ubuntu-latest, options: '--package=winit --features=android-native-activity', cmd: 'apk --' }
        include:
-          - toolchain: '1.73'
+          - toolchain: '1.70.0'
            platform: { name: 'Android', target: aarch64-linux-android, os: ubuntu-latest, options: '--package=winit --features=android-native-activity', cmd: 'apk --' }
          - toolchain: 'nightly'
            platform: {
@@ -149,13 +149,13 @@ jobs:
    - name: Test dpi crate
      if: >
        contains(matrix.platform.name, 'Linux 64bit') &&
-        matrix.toolchain != '1.73'
+        matrix.toolchain != '1.70.0'
      run: cargo test -p dpi

    - name: Build tests
      if: >
        !contains(matrix.platform.target, 'redox') &&
-        matrix.toolchain != '1.73'
+        matrix.toolchain != '1.70.0'
      run: cargo $CMD test --no-run $OPTIONS

    - name: Run tests
@@ -164,7 +164,7 @@ jobs:
        !contains(matrix.platform.target, 'ios') &&
        !contains(matrix.platform.target, 'wasm32') &&
        !contains(matrix.platform.target, 'redox') &&
-        matrix.toolchain != '1.73'
+        matrix.toolchain != '1.70.0'
      run: cargo $CMD test $OPTIONS

    - name: Lint with clippy
@@ -174,7 +174,7 @@ jobs:
    - name: Build tests with serde enabled
      if: >
        !contains(matrix.platform.target, 'redox') &&
-        matrix.toolchain != '1.73'
+        matrix.toolchain != '1.70.0'
      run: cargo $CMD test --no-run $OPTIONS --features serde

    - name: Run tests with serde enabled
@@ -183,7 +183,7 @@ jobs:
        !contains(matrix.platform.target, 'ios') &&
        !contains(matrix.platform.target, 'wasm32') &&
        !contains(matrix.platform.target, 'redox') &&
-        matrix.toolchain != '1.73'
+        matrix.toolchain != '1.70.0'
      run: cargo $CMD test $OPTIONS --features serde

    - name: Check docs.rs documentation
@@ -221,7 +221,7 @@ jobs:

    steps:
    - uses: taiki-e/checkout-action@v1
-    - uses: EmbarkStudios/cargo-deny-action@v1
+    - uses: EmbarkStudios/cargo-deny-action@v2
      with:
        command: check
        log-level: error
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "winit"
-version = "0.30.3"
+version = "0.30.7"
 authors = [
    "The winit contributors",
    "Pierre Krieger <pierre.krieger1708@gmail.com>",
@@ -14,7 +14,17 @@ rust-version.workspace = true
 repository.workspace = true
 license.workspace = true
 edition.workspace = true
-exclude = ["/.cargo"]
+include = [
+    "/build.rs",
+    "/docs",
+    "/examples",
+    "/FEATURES.md",
+    "/LICENSE",
+    "/src",
+    "!/src/platform_impl/web/script",
+    "/src/platform_impl/web/script/**/*.min.js",
+    "/tests",
+]

 [package.metadata.docs.rs]
 features = [
@@ -102,21 +112,21 @@ softbuffer = { version = "0.4.0", default-features = false, features = [
    "wayland-dlopen",
 ] }

-# Android
 [target.'cfg(target_os = "android")'.dependencies]
 android-activity = "0.6.0"
 ndk = { version = "0.9.0", default-features = false }

-# AppKit or UIKit
-[target.'cfg(target_vendor = "apple")'.dependencies]
+[target.'cfg(any(target_os = "ios", target_os = "macos"))'.dependencies]
 core-foundation = "0.9.3"
 objc2 = "0.5.2"

-# AppKit
 [target.'cfg(target_os = "macos")'.dependencies]
 core-graphics = "0.23.1"
 block2 = "0.5.1"
-objc2-foundation = { version = "0.2.2", features = [
+
+[target.'cfg(target_os = "macos")'.dependencies.objc2-foundation]
+version = "0.2.2"
+features = [
    "block2",
    "dispatch",
    "NSArray",
@@ -134,8 +144,11 @@ objc2-foundation = { version = "0.2.2", features = [
    "NSString",
    "NSThread",
    "NSValue",
-] }
-objc2-app-kit = { version = "0.2.2", features = [
+]
+
+[target.'cfg(target_os = "macos")'.dependencies.objc2-app-kit]
+version = "0.2.2"
+features = [
    "NSAppearance",
    "NSApplication",
    "NSBitmapImageRep",
@@ -162,11 +175,11 @@ objc2-app-kit = { version = "0.2.2", features = [
    "NSWindow",
    "NSWindowScripting",
    "NSWindowTabGroup",
-] }
+]

-# UIKit
-[target.'cfg(all(target_vendor = "apple", not(target_os = "macos")))'.dependencies]
-objc2-foundation = { version = "0.2.2", features = [
+[target.'cfg(target_os = "ios")'.dependencies.objc2-foundation]
+version = "0.2.2"
+features = [
    "dispatch",
    "NSArray",
    "NSEnumerator",
@@ -176,13 +189,18 @@ objc2-foundation = { version = "0.2.2", features = [
    "NSProcessInfo",
    "NSThread",
    "NSSet",
-] }
-objc2-ui-kit = { version = "0.2.2", features = [
+]
+
+[target.'cfg(target_os = "ios")'.dependencies.objc2-ui-kit]
+version = "0.2.2"
+features = [
    "UIApplication",
    "UIDevice",
    "UIEvent",
    "UIGeometry",
    "UIGestureRecognizer",
+    "UITextInput",
+    "UITextInputTraits",
    "UIOrientation",
    "UIPanGestureRecognizer",
    "UIPinchGestureRecognizer",
@@ -196,12 +214,14 @@ objc2-ui-kit = { version = "0.2.2", features = [
    "UIView",
    "UIViewController",
    "UIWindow",
-] }
+]

-# Windows
 [target.'cfg(target_os = "windows")'.dependencies]
 unicode-segmentation = "1.7.1"
-windows-sys = { version = "0.52.0", features = [
+
+[target.'cfg(target_os = "windows")'.dependencies.windows-sys]
+version = "0.52.0"
+features = [
    "Win32_Devices_HumanInterfaceDevice",
    "Win32_Foundation",
    "Win32_Globalization",
@@ -212,6 +232,7 @@ windows-sys = { version = "0.52.0", features = [
    "Win32_System_Com",
    "Win32_System_LibraryLoader",
    "Win32_System_Ole",
+    "Win32_Security",
    "Win32_System_SystemInformation",
    "Win32_System_SystemServices",
    "Win32_System_Threading",
@@ -226,13 +247,12 @@ windows-sys = { version = "0.52.0", features = [
    "Win32_UI_Shell",
    "Win32_UI_TextServices",
    "Win32_UI_WindowsAndMessaging",
-] }
+]

-# Linux
-[target.'cfg(all(unix, not(any(target_os = "redox", target_family = "wasm", target_os = "android", target_vendor = "apple"))))'.dependencies]
+[target.'cfg(all(unix, not(any(target_os = "redox", target_family = "wasm", target_os = "android", target_os = "ios", target_os = "macos"))))'.dependencies]
 ahash = { version = "0.8.7", features = ["no-rng"], optional = true }
 bytemuck = { version = "1.13.1", default-features = false, optional = true }
-calloop = "0.12.3"
+calloop = "0.13.0"
 libc = "0.2.64"
 memmap2 = { version = "0.9.0", optional = true }
 percent-encoding = { version = "2.0", optional = true }
@@ -242,18 +262,18 @@ rustix = { version = "0.38.4", default-features = false, features = [
    "thread",
    "process",
 ] }
-sctk = { package = "smithay-client-toolkit", version = "0.18.0", default-features = false, features = [
+sctk = { package = "smithay-client-toolkit", version = "0.19.2", default-features = false, features = [
    "calloop",
 ], optional = true }
-sctk-adwaita = { version = "0.9.0", default-features = false, optional = true }
-wayland-backend = { version = "0.3.0", default-features = false, features = [
+sctk-adwaita = { version = "0.10.1", default-features = false, optional = true }
+wayland-backend = { version = "0.3.5", default-features = false, features = [
    "client_system",
 ], optional = true }
-wayland-client = { version = "0.31.1", optional = true }
-wayland-protocols = { version = "0.31.0", features = [
+wayland-client = { version = "0.31.4", optional = true }
+wayland-protocols = { version = "0.32.2", features = [
    "staging",
 ], optional = true }
-wayland-protocols-plasma = { version = "0.2.0", features = [
+wayland-protocols-plasma = { version = "0.3.2", features = [
    "client",
 ], optional = true }
 x11-dl = { version = "2.19.1", optional = true }
@@ -267,61 +287,67 @@ x11rb = { version = "0.13.0", default-features = false, features = [
 ], optional = true }
 xkbcommon-dl = "0.4.2"

-# Orbital
 [target.'cfg(target_os = "redox")'.dependencies]
 orbclient = { version = "0.3.47", default-features = false }
 redox_syscall = "0.4.1"

-# Web
 [target.'cfg(target_family = "wasm")'.dependencies]
-web_sys = { package = "web-sys", version = "0.3.64", features = [
-    'AbortController',
-    'AbortSignal',
-    'Blob',
-    'BlobPropertyBag',
-    'console',
-    'CssStyleDeclaration',
-    'Document',
-    'DomException',
-    'DomRect',
-    'DomRectReadOnly',
-    'Element',
-    'Event',
-    'EventTarget',
-    'FocusEvent',
-    'HtmlCanvasElement',
-    'HtmlElement',
-    'HtmlImageElement',
-    'ImageBitmap',
-    'ImageBitmapOptions',
-    'ImageBitmapRenderingContext',
-    'ImageData',
-    'IntersectionObserver',
-    'IntersectionObserverEntry',
-    'KeyboardEvent',
-    'MediaQueryList',
-    'MessageChannel',
-    'MessagePort',
-    'Node',
-    'PageTransitionEvent',
-    'PointerEvent',
-    'PremultiplyAlpha',
-    'ResizeObserver',
-    'ResizeObserverBoxOptions',
-    'ResizeObserverEntry',
-    'ResizeObserverOptions',
-    'ResizeObserverSize',
-    'VisibilityState',
-    'Window',
-    'WheelEvent',
-    'Worker',
-    'Url',
-] }
-js-sys = "0.3.64"
+js-sys = "0.3.70"
 pin-project = "1"
-wasm-bindgen = "0.2"
-wasm-bindgen-futures = "0.4"
+wasm-bindgen = "0.2.93"
+wasm-bindgen-futures = "0.4.43"
 web-time = "1"
+web_sys = { package = "web-sys", version = "0.3.70", features = [
+    "AbortController",
+    "AbortSignal",
+    "Blob",
+    "BlobPropertyBag",
+    "console",
+    "CssStyleDeclaration",
+    "Document",
+    "DomException",
+    "DomRect",
+    "DomRectReadOnly",
+    "Element",
+    "Event",
+    "EventTarget",
+    "FocusEvent",
+    "HtmlCanvasElement",
+    "HtmlElement",
+    "HtmlImageElement",
+    "ImageBitmap",
+    "ImageBitmapOptions",
+    "ImageBitmapRenderingContext",
+    "ImageData",
+    "IntersectionObserver",
+    "IntersectionObserverEntry",
+    "KeyboardEvent",
+    "MediaQueryList",
+    "MessageChannel",
+    "MessagePort",
+    "Navigator",
+    "Node",
+    "OrientationLockType",
+    "OrientationType",
+    "PageTransitionEvent",
+    "Permissions",
+    "PermissionState",
+    "PermissionStatus",
+    "PointerEvent",
+    "PremultiplyAlpha",
+    "ResizeObserver",
+    "ResizeObserverBoxOptions",
+    "ResizeObserverEntry",
+    "ResizeObserverOptions",
+    "ResizeObserverSize",
+    "Screen",
+    "ScreenOrientation",
+    "Url",
+    "VisibilityState",
+    "WheelEvent",
+    "Window",
+    "Worker",
+] }

 [target.'cfg(all(target_family = "wasm", target_feature = "atomics"))'.dependencies]
 atomic-waker = "1"
@@ -340,7 +366,7 @@ resolver = "2"
 members = ["dpi"]

 [workspace.package]
-rust-version = "1.73"
+rust-version = "1.70.0"
 repository = "https://github.com/rust-windowing/winit"
 license = "Apache-2.0"
 edition = "2021"
--- a/FEATURES.md
+++ b/FEATURES.md
@@ -154,6 +154,7 @@ If your PR makes notable changes to Winit's features, please update this section
 * Home indicator visibility
 * Status bar visibility and style
 * Deferring system gestures
+* Getting the device idiom
 * Getting the preferred video mode

 ### Web
--- a/README.md
+++ b/README.md
@@ -8,7 +8,7 @@

 ```toml
 [dependencies]
-winit = "0.30.3"
+winit = "0.30.7"
 ```

 ## [Documentation](https://docs.rs/winit)
@@ -19,7 +19,7 @@ For features _outside_ the scope of winit, see [Are we GUI Yet?](https://arewegu

 ## Contact Us

-Join us in our [![Matrix](https://img.shields.io/badge/Matrix-%23rust--windowing%3Amatrix.org-blueviolet.svg)](https://matrix.to/#/#rust-windowing:matrix.org) room. If you don't get an answer there, try [![Libera.Chat](https://img.shields.io/badge/libera.chat-%23winit-red.svg)](https://web.libera.chat/#winit).
+Join us in our [![Matrix](https://img.shields.io/badge/Matrix-%23rust--windowing%3Amatrix.org-blueviolet.svg)](https://matrix.to/#/#rust-windowing:matrix.org) room.

 The maintainers have a meeting every friday at UTC 15. The meeting notes can be found [here](https://hackmd.io/@winit-meetings).

@@ -35,7 +35,7 @@ another library.

 ## MSRV Policy

-This crate's Minimum Supported Rust Version (MSRV) is **1.73**. Changes to
+This crate's Minimum Supported Rust Version (MSRV) is **1.70**. Changes to
 the MSRV will be accompanied by a minor version bump.

 As a **tentative** policy, the upper bound of the MSRV is given by the following
--- a/build.rs
+++ b/build.rs
@@ -10,9 +10,10 @@ fn main() {
        android_platform: { target_os = "android" },
        web_platform: { all(target_family = "wasm", target_os = "unknown") },
        macos_platform: { target_os = "macos" },
-        ios_platform: { all(target_vendor = "apple", not(target_os = "macos")) },
+        ios_platform: { target_os = "ios" },
        windows_platform: { target_os = "windows" },
-        free_unix: { all(unix, not(target_vendor = "apple"), not(android_platform), not(target_os = "emscripten")) },
+        apple: { any(target_os = "ios", target_os = "macos") },
+        free_unix: { all(unix, not(apple), not(android_platform), not(target_os = "emscripten")) },
        redox: { target_os = "redox" },

        // Native displays.
--- a/clippy.toml
+++ b/clippy.toml
@@ -12,6 +12,4 @@ disallowed-methods = [
    { path = "web_sys::Document::fullscreen_element", reason = "Doesn't account for compatibility with Safari" },
    { path = "objc2_app_kit::NSView::visibleRect", reason = "We expose a render target to the user, and visibility is not really relevant to that (and can break if you don't use the rectangle position as well). Use `frame` instead." },
    { path = "objc2_app_kit::NSWindow::setFrameTopLeftPoint", reason = "Not sufficient when working with Winit's coordinate system, use `flip_window_screen_coordinates` instead" },
-    { path = "core_foundation::runloop::kCFRunLoopCommonModes", reason = "Using the common modes includes the modal panel mode, which we usually want to avoid" },
-    { path = "objc2_foundation::NSRunLoopCommonModes", reason = "Using the common modes includes the modal panel mode, which we usually want to avoid" }
 ]
--- a/deny.toml
+++ b/deny.toml
@@ -1,15 +1,20 @@
-# https://embarkstudios.github.io/cargo-deny/
+# https://embarkstudios.github.io/cargo-deny
 # cargo install cargo-deny
-# cargo update && cargo deny --all-features --log-level error --target aarch64-apple-ios check
+# cargo update && cargo deny --target aarch64-apple-ios check
 # Note: running just `cargo deny check` without a `--target` will result in
 # false positives due to https://github.com/EmbarkStudios/cargo-deny/issues/324
+[graph]
+all-features = true
+exclude-dev = true
 targets = [
    { triple = "aarch64-apple-ios" },
    { triple = "aarch64-linux-android" },
    { triple = "i686-pc-windows-gnu" },
    { triple = "i686-pc-windows-msvc" },
    { triple = "i686-unknown-linux-gnu" },
-    { triple = "wasm32-unknown-unknown" },
+    { triple = "wasm32-unknown-unknown", features = [
+        "atomics",
+    ] },
    { triple = "x86_64-apple-darwin" },
    { triple = "x86_64-apple-ios" },
    { triple = "x86_64-pc-windows-gnu" },
@@ -18,46 +23,52 @@ targets = [
    { triple = "x86_64-unknown-redox" },
 ]

-
-[advisories]
-vulnerability = "deny"
-unmaintained = "warn"
-yanked = "deny"
-ignore = []
-
+[licenses]
+allow = [
+    "Apache-2.0",   # https://tldrlegal.com/license/apache-license-2.0-(apache-2.0)
+    "BSD-2-Clause", # https://tldrlegal.com/license/bsd-2-clause-license-(freebsd)
+    "BSD-3-Clause", # https://tldrlegal.com/license/bsd-3-clause-license-(revised)
+    "ISC",          # https://tldrlegal.com/license/isc-license
+    "MIT",          # https://tldrlegal.com/license/mit-license
+    "Unicode-3.0",  # https://spdx.org/licenses/Unicode-3.0.html
+]
+confidence-threshold = 1.0
+private = { ignore = true }

 [bans]
 multiple-versions = "deny"
-wildcards = "allow" # at least until https://github.com/EmbarkStudios/cargo-deny/issues/241 is fixed
-deny = []
 skip = [
-    { name = "raw-window-handle" },    # we intentionally have multiple versions of this
-    { name = "bitflags" },             # the ecosystem is in the process of migrating.
-    { name = "libloading" },           # x11rb uses a different version until the next update
+    { crate = "raw-window-handle", reason = "we depend on multiple behind features" },
+    { crate = "bitflags@1", reason = "the ecosystem is in the process of migrating" },
 ]
-skip-tree = []
+wildcards = "allow"                                                                        # at least until https://github.com/EmbarkStudios/cargo-deny/issues/241 is fixed

+[bans.build]
+include-archives = true
+interpreted = "deny"

-[licenses]
-private = { ignore = true }
-unlicensed = "deny"
-allow-osi-fsf-free = "neither"
-confidence-threshold = 0.92 # We want really high confidence when inferring licenses from text
-copyleft = "deny"
+[[bans.build.bypass]]
 allow = [
-    "Apache-2.0 WITH LLVM-exception", # https://spdx.org/licenses/LLVM-exception.html
-    "Apache-2.0",                     # https://tldrlegal.com/license/apache-license-2.0-(apache-2.0)
-    "BSD-2-Clause",                   # https://tldrlegal.com/license/bsd-2-clause-license-(freebsd)
-    "BSD-3-Clause",                   # https://tldrlegal.com/license/bsd-3-clause-license-(revised)
-    "BSL-1.0",                        # https://tldrlegal.com/license/boost-software-license-1.0-explained
-    "CC0-1.0",                        # https://creativecommons.org/publicdomain/zero/1.0/
-    "ISC",                            # https://tldrlegal.com/license/-isc-license
-    "LicenseRef-UFL-1.0",             # https://tldrlegal.com/license/ubuntu-font-license,-1.0 - no official SPDX, see https://github.com/emilk/egui/issues/2321
-    "MIT-0",                          # https://choosealicense.com/licenses/mit-0/
-    "MIT",                            # https://tldrlegal.com/license/mit-license
-    "MPL-2.0",                        # https://www.mozilla.org/en-US/MPL/2.0/FAQ/ - see Q11. Used by webpki-roots on Linux.
-    "OFL-1.1",                        # https://spdx.org/licenses/OFL-1.1.html
-    "OpenSSL",                        # https://www.openssl.org/source/license.html - used on Linux
-    "Unicode-DFS-2016",               # https://spdx.org/licenses/Unicode-DFS-2016.html
-    "Zlib",                           # https://tldrlegal.com/license/zlib-libpng-license-(zlib)
+    { path = "generate-bindings.sh", checksum = "268ec23248218d779e33853cdc60e2985e70214ff004716cd734270de1f6b561" },
 ]
+crate = "android-activity"
+
+[[bans.build.bypass]]
+allow-globs = ["freetype2/*"]
+crate = "freetype-sys"
+
+[[bans.build.bypass]]
+allow-globs = ["lib/*.a"]
+crate = "windows_i686_gnu"
+
+[[bans.build.bypass]]
+allow-globs = ["lib/*.lib"]
+crate = "windows_i686_msvc"
+
+[[bans.build.bypass]]
+allow-globs = ["lib/*.a"]
+crate = "windows_x86_64_gnu"
+
+[[bans.build.bypass]]
+allow-globs = ["lib/*.lib"]
+crate = "windows_x86_64_msvc"
--- a/examples/child_window.rs
+++ b/examples/child_window.rs
@@ -3,75 +3,15 @@
 fn main() -> Result<(), impl std::error::Error> {
    use std::collections::HashMap;

-    use winit::application::ApplicationHandler;
    use winit::dpi::{LogicalPosition, LogicalSize, Position};
-    use winit::event::{ElementState, KeyEvent, WindowEvent};
+    use winit::event::{ElementState, Event, KeyEvent, WindowEvent};
    use winit::event_loop::{ActiveEventLoop, EventLoop};
    use winit::raw_window_handle::HasRawWindowHandle;
-    use winit::window::{Window, WindowId};
+    use winit::window::Window;

    #[path = "util/fill.rs"]
    mod fill;

-    #[derive(Default)]
-    struct Application {
-        parent_window_id: Option<WindowId>,
-        windows: HashMap<WindowId, Window>,
-    }
-
-    impl ApplicationHandler for Application {
-        fn resumed(&mut self, event_loop: &ActiveEventLoop) {
-            let attributes = Window::default_attributes()
-                .with_title("parent window")
-                .with_position(Position::Logical(LogicalPosition::new(0.0, 0.0)))
-                .with_inner_size(LogicalSize::new(640.0f32, 480.0f32));
-            let window = event_loop.create_window(attributes).unwrap();
-
-            println!("Parent window id: {:?})", window.id());
-            self.parent_window_id = Some(window.id());
-
-            self.windows.insert(window.id(), window);
-        }
-
-        fn window_event(
-            &mut self,
-            event_loop: &ActiveEventLoop,
-            window_id: winit::window::WindowId,
-            event: WindowEvent,
-        ) {
-            match event {
-                WindowEvent::CloseRequested => {
-                    self.windows.clear();
-                    event_loop.exit();
-                },
-                WindowEvent::CursorEntered { device_id: _ } => {
-                    // On x11, println when the cursor entered in a window even if the child window
-                    // is created by some key inputs.
-                    // the child windows are always placed at (0, 0) with size (200, 200) in the
-                    // parent window, so we also can see this log when we move
-                    // the cursor around (200, 200) in parent window.
-                    println!("cursor entered in the window {window_id:?}");
-                },
-                WindowEvent::KeyboardInput {
-                    event: KeyEvent { state: ElementState::Pressed, .. },
-                    ..
-                } => {
-                    let parent_window = self.windows.get(&self.parent_window_id.unwrap()).unwrap();
-                    let child_window = spawn_child_window(parent_window, event_loop);
-                    let child_id = child_window.id();
-                    println!("Child window created with id: {child_id:?}");
-                    self.windows.insert(child_id, child_window);
-                },
-                WindowEvent::RedrawRequested => {
-                    if let Some(window) = self.windows.get(&window_id) {
-                        fill::fill_window(window);
-                    }
-                },
-                _ => (),
-            }
-        }
-    }
-
    fn spawn_child_window(parent: &Window, event_loop: &ActiveEventLoop) -> Window {
        let parent = parent.raw_window_handle().unwrap();
        let mut window_attributes = Window::default_attributes()
@@ -85,9 +25,58 @@ fn main() -> Result<(), impl std::error::Error> {
        event_loop.create_window(window_attributes).unwrap()
    }

-    let event_loop = EventLoop::new().unwrap();
-    let mut app = Application::default();
-    event_loop.run_app(&mut app)
+    let mut windows = HashMap::new();
+
+    let event_loop: EventLoop<()> = EventLoop::new().unwrap();
+    let mut parent_window_id = None;
+
+    event_loop.run(move |event: Event<()>, event_loop| {
+        match event {
+            Event::Resumed => {
+                let attributes = Window::default_attributes()
+                    .with_title("parent window")
+                    .with_position(Position::Logical(LogicalPosition::new(0.0, 0.0)))
+                    .with_inner_size(LogicalSize::new(640.0f32, 480.0f32));
+                let window = event_loop.create_window(attributes).unwrap();
+
+                parent_window_id = Some(window.id());
+
+                println!("Parent window id: {parent_window_id:?})");
+                windows.insert(window.id(), window);
+            },
+            Event::WindowEvent { window_id, event } => match event {
+                WindowEvent::CloseRequested => {
+                    windows.clear();
+                    event_loop.exit();
+                },
+                WindowEvent::CursorEntered { device_id: _ } => {
+                    // On x11, println when the cursor entered in a window even if the child window
+                    // is created by some key inputs.
+                    // the child windows are always placed at (0, 0) with size (200, 200) in the
+                    // parent window, so we also can see this log when we move
+                    // the cursor around (200, 200) in parent window.
+                    println!("cursor entered in the window {window_id:?}");
+                },
+                WindowEvent::KeyboardInput {
+                    event: KeyEvent { state: ElementState::Pressed, .. },
+                    ..
+                } => {
+                    let parent_window = windows.get(&parent_window_id.unwrap()).unwrap();
+                    let child_window = spawn_child_window(parent_window, event_loop);
+                    let child_id = child_window.id();
+                    println!("Child window created with id: {child_id:?}");
+                    windows.insert(child_id, child_window);
+                },
+                WindowEvent::RedrawRequested => {
+                    if let Some(window) = windows.get(&window_id) {
+                        fill::fill_window(window);
+                    }
+                },
+                _ => (),
+            },
+            _ => (),
+        }
+    })
 }

 #[cfg(all(feature = "rwh_06", not(any(x11_platform, macos_platform, windows_platform))))]
--- a/examples/window.rs
+++ b/examples/window.rs
@@ -31,6 +31,8 @@ use winit::platform::macos::{OptionAsAlt, WindowAttributesExtMacOS, WindowExtMac
 use winit::platform::startup_notify::{
    self, EventLoopExtStartupNotify, WindowAttributesExtStartupNotify, WindowExtStartupNotify,
 };
+#[cfg(x11_platform)]
+use winit::platform::x11::WindowAttributesExtX11;

 #[path = "util/tracing.rs"]
 mod tracing;
@@ -44,7 +46,7 @@ fn main() -> Result<(), Box<dyn Error>> {

    tracing::init();

-    let event_loop = EventLoop::new()?;
+    let event_loop = EventLoop::<UserEvent>::with_user_event().build()?;
    let _event_loop_proxy = event_loop.create_proxy();

    // Wire the user event from another thread.
@@ -54,7 +56,7 @@ fn main() -> Result<(), Box<dyn Error>> {
        // from a different thread.
        info!("Starting to send user event every second");
        loop {
-            _event_loop_proxy.wake_up();
+            let _ = _event_loop_proxy.send_event(UserEvent::WakeUp);
            std::thread::sleep(std::time::Duration::from_secs(1));
        }
    });
@@ -64,6 +66,12 @@ fn main() -> Result<(), Box<dyn Error>> {
    event_loop.run_app(&mut state).map_err(Into::into)
 }

+#[allow(dead_code)]
+#[derive(Debug, Clone, Copy)]
+enum UserEvent {
+    WakeUp,
+}
+
 /// Application state and event handling.
 struct Application {
    /// Custom cursors assets.
@@ -79,7 +87,7 @@ struct Application {
 }

 impl Application {
-    fn new(event_loop: &EventLoop) -> Self {
+    fn new<T>(event_loop: &EventLoop<T>) -> Self {
        // SAFETY: we drop the context right before the event loop is stopped, thus making it safe.
        #[cfg(not(any(android_platform, ios_platform)))]
        let context = Some(
@@ -134,6 +142,28 @@ impl Application {
            window_attributes = window_attributes.with_activation_token(token);
        }

+        #[cfg(x11_platform)]
+        match std::env::var("X11_VISUAL_ID") {
+            Ok(visual_id_str) => {
+                info!("Using X11 visual id {visual_id_str}");
+                let visual_id = visual_id_str.parse()?;
+                window_attributes = window_attributes.with_x11_visual(visual_id);
+            },
+            Err(_) => info!("Set the X11_VISUAL_ID env variable to request specific X11 visual"),
+        }
+
+        #[cfg(x11_platform)]
+        match std::env::var("X11_SCREEN_ID") {
+            Ok(screen_id_str) => {
+                info!("Placing the window on X11 screen {screen_id_str}");
+                let screen_id = screen_id_str.parse()?;
+                window_attributes = window_attributes.with_x11_screen(screen_id);
+            },
+            Err(_) => info!(
+                "Set the X11_SCREEN_ID env variable to place the window on non-default screen"
+            ),
+        }
+
        #[cfg(macos_platform)]
        if let Some(tab_id) = _tab_id {
            window_attributes = window_attributes.with_tabbing_identifier(&tab_id);
@@ -302,9 +332,9 @@ impl Application {
    }
 }

-impl ApplicationHandler for Application {
-    fn proxy_wake_up(&mut self, _event_loop: &ActiveEventLoop) {
-        info!("User wake up");
+impl ApplicationHandler<UserEvent> for Application {
+    fn user_event(&mut self, _event_loop: &ActiveEventLoop, event: UserEvent) {
+        info!("User event: {event:?}");
    }

    fn window_event(
--- a/src/application.rs
+++ b/src/application.rs
@@ -5,7 +5,7 @@ use crate::event_loop::ActiveEventLoop;
 use crate::window::WindowId;

 /// The handler of the application events.
-pub trait ApplicationHandler {
+pub trait ApplicationHandler<T: 'static = ()> {
    /// Emitted when new events arrive from the OS to be processed.
    ///
    /// This is a useful place to put code that should be done before you start processing
@@ -82,95 +82,11 @@ pub trait ApplicationHandler {
    /// [`Suspended`]: Self::suspended
    fn resumed(&mut self, event_loop: &ActiveEventLoop);

-    /// Called after a wake up is requested using [`EventLoopProxy::wake_up()`].
+    /// Emitted when an event is sent from [`EventLoopProxy::send_event`].
    ///
-    /// Multiple calls to the aforementioned method will be merged, and will only wake the event
-    /// loop once; however, due to the nature of multi-threading some wake ups may appear
-    /// spuriously. For these reasons, you should not rely on the number of times that this was
-    /// called.
-    ///
-    /// The order in which this is emitted in relation to other events is not guaranteed. The time
-    /// at which this will be emitted is not guaranteed, only that it will happen "soon". That is,
-    /// there may be several executions of the event loop, including multiple redraws to windows,
-    /// between [`EventLoopProxy::wake_up()`] being called and the event being delivered.
-    ///
-    /// [`EventLoopProxy::wake_up()`]: crate::event_loop::EventLoopProxy::wake_up
-    ///
-    /// # Example
-    ///
-    /// Use a [`std::sync::mpsc`] channel to handle events from a different thread.
-    ///
-    /// ```no_run
-    /// use std::sync::mpsc;
-    /// use std::thread;
-    /// use std::time::Duration;
-    ///
-    /// use winit::application::ApplicationHandler;
-    /// use winit::event_loop::{ActiveEventLoop, EventLoop};
-    ///
-    /// struct MyApp {
-    ///     receiver: mpsc::Receiver<u64>,
-    /// }
-    ///
-    /// impl ApplicationHandler for MyApp {
-    ///     # fn window_event(
-    ///     #     &mut self,
-    ///     #     _event_loop: &ActiveEventLoop,
-    ///     #     _window_id: winit::window::WindowId,
-    ///     #     _event: winit::event::WindowEvent,
-    ///     # ) {
-    ///     # }
-    ///     #
-    ///     # fn resumed(&mut self, _event_loop: &ActiveEventLoop) {}
-    ///     #
-    ///     fn proxy_wake_up(&mut self, _event_loop: &ActiveEventLoop) {
-    ///         // Iterate current events, since wake-ups may have been merged.
-    ///         //
-    ///         // Note: We take care not to use `recv` or `iter` here, as those are blocking,
-    ///         // and that would be bad for performance and might lead to a deadlock.
-    ///         for i in self.receiver.try_iter() {
-    ///             println!("received: {i}");
-    ///         }
-    ///     }
-    ///
-    ///     // Rest of `ApplicationHandler`
-    /// }
-    ///
-    /// fn main() -> Result<(), Box<dyn std::error::Error>> {
-    ///     let event_loop = EventLoop::new()?;
-    ///
-    ///     let (sender, receiver) = mpsc::channel();
-    ///
-    ///     let mut app = MyApp { receiver };
-    ///
-    ///     // Send an event in a loop
-    ///     let proxy = event_loop.create_proxy();
-    ///     let background_thread = thread::spawn(move || {
-    ///         let mut i = 0;
-    ///         loop {
-    ///             println!("sending: {i}");
-    ///             if sender.send(i).is_err() {
-    ///                 // Stop sending once `MyApp` is dropped
-    ///                 break;
-    ///             }
-    ///             // Trigger the wake-up _after_ we placed the event in the channel.
-    ///             // Otherwise, `proxy_wake_up` might be triggered prematurely.
-    ///             proxy.wake_up();
-    ///             i += 1;
-    ///             thread::sleep(Duration::from_secs(1));
-    ///         }
-    ///     });
-    ///
-    ///     event_loop.run_app(&mut app)?;
-    ///
-    ///     drop(app);
-    ///     background_thread.join().unwrap();
-    ///
-    ///     Ok(())
-    /// }
-    /// ```
-    fn proxy_wake_up(&mut self, event_loop: &ActiveEventLoop) {
-        let _ = event_loop;
+    /// [`EventLoopProxy::send_event`]: crate::event_loop::EventLoopProxy::send_event
+    fn user_event(&mut self, event_loop: &ActiveEventLoop, event: T) {
+        let _ = (event_loop, event);
    }

    /// Emitted when the OS sends an event to a winit window.
@@ -308,7 +224,7 @@ pub trait ApplicationHandler {
    }
 }

-impl<A: ?Sized + ApplicationHandler> ApplicationHandler for &mut A {
+impl<A: ?Sized + ApplicationHandler<T>, T: 'static> ApplicationHandler<T> for &mut A {
    #[inline]
    fn new_events(&mut self, event_loop: &ActiveEventLoop, cause: StartCause) {
        (**self).new_events(event_loop, cause);
@@ -320,8 +236,8 @@ impl<A: ?Sized + ApplicationHandler> ApplicationHandler for &mut A {
    }

    #[inline]
-    fn proxy_wake_up(&mut self, event_loop: &ActiveEventLoop) {
-        (**self).proxy_wake_up(event_loop);
+    fn user_event(&mut self, event_loop: &ActiveEventLoop, event: T) {
+        (**self).user_event(event_loop, event);
    }

    #[inline]
@@ -365,7 +281,7 @@ impl<A: ?Sized + ApplicationHandler> ApplicationHandler for &mut A {
    }
 }

-impl<A: ?Sized + ApplicationHandler> ApplicationHandler for Box<A> {
+impl<A: ?Sized + ApplicationHandler<T>, T: 'static> ApplicationHandler<T> for Box<A> {
    #[inline]
    fn new_events(&mut self, event_loop: &ActiveEventLoop, cause: StartCause) {
        (**self).new_events(event_loop, cause);
@@ -377,8 +293,8 @@ impl<A: ?Sized + ApplicationHandler> ApplicationHandler for Box<A> {
    }

    #[inline]
-    fn proxy_wake_up(&mut self, event_loop: &ActiveEventLoop) {
-        (**self).proxy_wake_up(event_loop);
+    fn user_event(&mut self, event_loop: &ActiveEventLoop, event: T) {
+        (**self).user_event(event_loop, event);
    }

    #[inline]
--- a/src/changelog/unreleased.md
+++ b/src/changelog/unreleased.md
@@ -39,27 +39,3 @@ The migration guide could reference other migration examples in the current
 changelog entry.

 ## Unreleased
-
-### Changed
-
- On Web, let events wake up event loop immediately when using `ControlFlow::Poll`.
- Bump MSRV from `1.70` to `1.73`.
- Changed `ApplicationHandler::user_event` to `user_wake_up`, removing the
-  generic user event.
-
-  Winit will now only indicate that wake up happened, you will have to pair
-  this with an external mechanism like `std::sync::mpsc::channel` if you want
-  to send specific data to be processed on the main thread.
- Changed `EventLoopProxy::send_event` to `EventLoopProxy::wake_up`, it now
-  only wakes up the loop.
-
-### Removed
-
- Remove `EventLoop::run`.
- Remove `EventLoopExtRunOnDemand::run_on_demand`.
- Remove `EventLoopExtPumpEvents::pump_events`.
- Remove `Event`.
- On iOS, remove `platform::ios::EventLoopExtIOS` and related `platform::ios::Idiom` type.
-
-  This feature was incomplete, and the equivalent functionality can be trivially achieved outside
-  of `winit` using `objc2-ui-kit` and calling `UIDevice::currentDevice().userInterfaceIdiom()`.
--- a/src/changelog/v0.20.md
+++ b/src/changelog/v0.20.md
@@ -137,7 +137,7 @@

 - On X11, non-resizable windows now have maximize explicitly disabled.
 - On Windows, support paths longer than MAX_PATH (260 characters) in `WindowEvent::DroppedFile`
-and `WindowEvent::HoveredFile`.
+  and `WindowEvent::HoveredFile`.
 - On Mac, implement `DeviceEvent::Button`.
 - Change `Event::Suspended(true / false)` to `Event::Suspended` and `Event::Resumed`.
 - On X11, fix sanity check which checks that a monitor's reported width and height (in millimeters) are non-zero when calculating the DPI factor.
--- a/src/changelog/v0.30.md
+++ b/src/changelog/v0.30.md
@@ -1,3 +1,64 @@
+## 0.30.7
+
+### Fixed
+
+- On X11, fixed KeyboardInput delivered twice when IME enabled.
+
+## 0.30.6
+
+### Added
+
+- On macOS, add `WindowExtMacOS::set_borderless_game` and `WindowAttributesExtMacOS::with_borderless_game`
+  to fully disable the menu bar and dock in Borderless Fullscreen as commonly done in games.
+- On X11, the `window` example now understands the `X11_VISUAL_ID` and `X11_SCREEN_ID` env
+  variables to test the respective modifiers of window creation.
+- On Android, the soft keyboard can now be shown using `Window::set_ime_allowed`.
+- Add basic iOS IME support. The soft keyboard can now be shown using `Window::set_ime_allowed`.
+
+### Fixed
+
+- On macOS, fix `WindowEvent::Moved` sometimes being triggered unnecessarily on resize.
+- On macOS, package manifest definitions of `LSUIElement` will no longer be overridden with the
+  default activation policy, unless explicitly provided during initialization.
+- On macOS, fix crash when calling `drag_window()` without a left click present.
+- On X11, key events forward to IME anyway, even when it's disabled.
+- On Windows, make `ControlFlow::WaitUntil` work more precisely using `CREATE_WAITABLE_TIMER_HIGH_RESOLUTION`.
+- On X11, creating windows on screen that is not the first one (e.g. `DISPLAY=:0.1`) works again.
+- On X11, creating windows while passing `with_x11_screen(non_default_screen)` works again.
+- On X11, fix XInput handling that prevented a new window from getting the focus in some cases.
+- On macOS, fix crash when pressing Caps Lock in certain configurations.
+- On iOS, fixed `MonitorHandle`'s `PartialEq` and `Hash` implementations.
+- On macOS, fixed undocumented cursors (e.g. zoom, resize, help) always appearing to be invalid and falling back to the default cursor.
+
+## 0.30.5
+
+### Added
+
+- Add `ActiveEventLoop::system_theme()`, returning the current system theme.
+- On Web, implement `Error` for `platform::web::CustomCursorError`.
+- On Android, add `{Active,}EventLoopExtAndroid::android_app()` to access the app used to create the loop.
+
+### Fixed
+
+- On MacOS, fix building with `feature = "rwh_04"`.
+- On Web, pen events are now routed through to `WindowEvent::Cursor*`.
+- On macOS, fix panic when releasing not available monitor.
+- On MacOS, return the system theme in `Window::theme()` if no theme override is set.
+
+## 0.30.4
+
+### Changed
+
+- `DeviceId::dummy()` and `WindowId::dummy()` are no longer marked `unsafe`.
+
+### Fixed
+
+- On Wayland, avoid crashing when compositor is misbehaving.
+- On Web, fix `WindowEvent::Resized` not using `requestAnimationFrame` when sending
+  `WindowEvent::RedrawRequested` and also potentially causing `WindowEvent::RedrawRequested`
+  to not be de-duplicated.
+- Account for different browser engine implementations of pointer movement coordinate space.
+
 ## 0.30.3

 ### Added
@@ -35,7 +96,6 @@

 - Reexport `raw-window-handle` versions 0.4 and 0.5 as `raw_window_handle_04` and `raw_window_handle_05`.
 - Implement `ApplicationHandler` for `&mut` references and heap allocations to something that implements `ApplicationHandler`.
- Add traits `EventLoopExtWayland` and `EventLoopExtX11`, providing methods `is_wayland` and `is_x11` on `EventLoop`.

 ### Fixed

@@ -112,7 +172,7 @@
  `Fn`. The semantics are mostly the same, given that the capture list of the
  closure is your new `State`. Consider the following code:

-  ```rust,no_run,ignore
+  ```rust,no_run
  use winit::event::Event;
  use winit::event_loop::EventLoop;
  use winit::window::Window;
@@ -148,7 +208,7 @@
  we move particular `match event` arms into methods on `ApplicationHandler`,
  for example:

-  ```rust,no_run,ignore
+  ```rust,no_run
  use winit::application::ApplicationHandler;
  use winit::event::{Event, WindowEvent, DeviceEvent, DeviceId};
  use winit::event_loop::{EventLoop, ActiveEventLoop};
@@ -211,7 +271,7 @@

  Using the migration example from above, you can change your code as follows:

-  ```rust,no_run,ignore
+  ```rust,no_run
  use winit::application::ApplicationHandler;
  use winit::event::{Event, WindowEvent, DeviceEvent, DeviceId};
  use winit::event_loop::{EventLoop, ActiveEventLoop};
--- a/src/changelog/v0.9.md
+++ b/src/changelog/v0.9.md
@@ -3,20 +3,20 @@
 - Added event `WindowEvent::HiDPIFactorChanged`.
 - Added method `MonitorId::get_hidpi_factor`.
 - Deprecated `get_inner_size_pixels` and `get_inner_size_points` methods of `Window` in favor of
-`get_inner_size`.
+  `get_inner_size`.
 - **Breaking:** `EventsLoop` is `!Send` and `!Sync` because of platform-dependant constraints,
  but `Window`, `WindowId`, `DeviceId` and `MonitorId` guaranteed to be `Send`.
 - `MonitorId::get_position` now returns `(i32, i32)` instead of `(u32, u32)`.
 - Rewrite of the wayland backend to use wayland-client-0.11
 - Support for dead keys on wayland for keyboard utf8 input
 - Monitor enumeration on Windows is now implemented using `EnumDisplayMonitors` instead of
-`EnumDisplayDevices`. This changes the value returned by `MonitorId::get_name()`.
+  `EnumDisplayDevices`. This changes the value returned by `MonitorId::get_name()`.
 - On Windows added `MonitorIdExt::hmonitor` method
 - Impl `Clone` for `EventsLoopProxy`
 - `EventsLoop::get_primary_monitor()` on X11 will fallback to any available monitor if no primary is found
 - Support for touch event on wayland
 - `WindowEvent`s `MouseMoved`, `MouseEntered`, and `MouseLeft` have been renamed to
-`CursorMoved`, `CursorEntered`, and `CursorLeft`.
+  `CursorMoved`, `CursorEntered`, and `CursorLeft`.
 - New `DeviceEvent`s added, `MouseMotion` and `MouseWheel`.
 - Send `CursorMoved` event after `CursorEntered` and `Focused` events.
 - Add support for `ModifiersState`, `MouseMove`, `MouseInput`, `MouseMotion` for emscripten backend.
--- a/src/event.rs
+++ b/src/event.rs
@@ -1,4 +1,4 @@
-//! The event enums and assorted supporting types.
+//! The [`Event`] enum and assorted supporting types.
 //!
 //! These are sent to the closure given to [`EventLoop::run_app(...)`], where they get
 //! processed and used to modify the program state. For more details, see the root-level
@@ -54,15 +54,11 @@ use crate::platform_impl;
 use crate::window::Window;
 use crate::window::{ActivationToken, Theme, WindowId};

-// TODO: Remove once the backends can call `ApplicationHandler` methods directly. For now backends
-// like Windows and Web require `Event` to wire user events, otherwise each backend will have to
-// wrap `Event` in some other structure.
 /// Describes a generic event.
 ///
 /// See the module-level docs for more information on the event loop manages each event.
-#[allow(dead_code)]
 #[derive(Debug, Clone, PartialEq)]
-pub(crate) enum Event {
+pub enum Event<T: 'static> {
    /// See [`ApplicationHandler::new_events`] for details.
    ///
    /// [`ApplicationHandler::new_events`]: crate::application::ApplicationHandler::new_events
@@ -71,15 +67,18 @@ pub(crate) enum Event {
    /// See [`ApplicationHandler::window_event`] for details.
    ///
    /// [`ApplicationHandler::window_event`]: crate::application::ApplicationHandler::window_event
-    #[allow(clippy::enum_variant_names)]
    WindowEvent { window_id: WindowId, event: WindowEvent },

    /// See [`ApplicationHandler::device_event`] for details.
    ///
    /// [`ApplicationHandler::device_event`]: crate::application::ApplicationHandler::device_event
-    #[allow(clippy::enum_variant_names)]
    DeviceEvent { device_id: DeviceId, event: DeviceEvent },

+    /// See [`ApplicationHandler::user_event`] for details.
+    ///
+    /// [`ApplicationHandler::user_event`]: crate::application::ApplicationHandler::user_event
+    UserEvent(T),
+
    /// See [`ApplicationHandler::suspended`] for details.
    ///
    /// [`ApplicationHandler::suspended`]: crate::application::ApplicationHandler::suspended
@@ -104,9 +103,24 @@ pub(crate) enum Event {
    ///
    /// [`ApplicationHandler::memory_warning`]: crate::application::ApplicationHandler::memory_warning
    MemoryWarning,
+}

-    /// User requested a wake up.
-    UserWakeUp,
+impl<T> Event<T> {
+    #[allow(clippy::result_large_err)]
+    pub fn map_nonuser_event<U>(self) -> Result<Event<U>, Event<T>> {
+        use self::Event::*;
+        match self {
+            UserEvent(_) => Err(self),
+            WindowEvent { window_id, event } => Ok(WindowEvent { window_id, event }),
+            DeviceEvent { device_id, event } => Ok(DeviceEvent { device_id, event }),
+            NewEvents(cause) => Ok(NewEvents(cause)),
+            AboutToWait => Ok(AboutToWait),
+            LoopExiting => Ok(LoopExiting),
+            Suspended => Ok(Suspended),
+            Resumed => Ok(Resumed),
+            MemoryWarning => Ok(MemoryWarning),
+        }
+    }
 }

 /// Describes the reason the event loop is resuming.
@@ -435,16 +449,13 @@ pub struct DeviceId(pub(crate) platform_impl::DeviceId);
 impl DeviceId {
    /// Returns a dummy id, useful for unit testing.
    ///
-    /// # Safety
+    /// # Notes
    ///
    /// The only guarantee made about the return value of this function is that
    /// it will always be equal to itself and to future values returned by this function.
    /// No other guarantees are made. This may be equal to a real `DeviceId`.
-    ///
-    /// **Passing this into a winit function will result in undefined behavior.**
-    pub const unsafe fn dummy() -> Self {
-        #[allow(unused_unsafe)]
-        DeviceId(unsafe { platform_impl::DeviceId::dummy() })
+    pub const fn dummy() -> Self {
+        DeviceId(platform_impl::DeviceId::dummy())
    }
 }

@@ -521,11 +532,11 @@ pub struct KeyEvent {
    /// ## Caveats
    ///
    /// - Certain niche hardware will shuffle around physical key positions, e.g. a keyboard that
-    /// implements DVORAK in hardware (or firmware)
+    ///   implements DVORAK in hardware (or firmware)
    /// - Your application will likely have to handle keyboards which are missing keys that your
-    /// own keyboard has.
+    ///   own keyboard has.
    /// - Certain `KeyCode`s will move between a couple of different positions depending on what
-    /// layout the keyboard was manufactured to support.
+    ///   layout the keyboard was manufactured to support.
    ///
    ///  **Because of these caveats, it is important that you provide users with a way to configure
    ///  most (if not all) keybinds in your application.**
@@ -547,8 +558,7 @@ pub struct KeyEvent {
    ///
    /// This has two use cases:
    /// - Allows querying whether the current input is a Dead key.
-    /// - Allows handling key-bindings on platforms which don't
-    /// support [`key_without_modifiers`].
+    /// - Allows handling key-bindings on platforms which don't support [`key_without_modifiers`].
    ///
    /// If you use this field (or [`key_without_modifiers`] for that matter) for keyboard
    /// shortcuts, **it is important that you provide users with a way to configure your
@@ -556,8 +566,8 @@ pub struct KeyEvent {
    /// incompatible keyboard layout.**
    ///
    /// ## Platform-specific
-    /// - **Web:** Dead keys might be reported as the real key instead
-    /// of `Dead` depending on the browser/OS.
+    /// - **Web:** Dead keys might be reported as the real key instead of `Dead` depending on the
+    ///   browser/OS.
    ///
    /// [`key_without_modifiers`]: crate::platform::modifier_supplement::KeyEventExtModifierSupplement::key_without_modifiers
    pub logical_key: keyboard::Key,
@@ -839,8 +849,8 @@ pub struct Touch {
    ///
    /// - Only available on **iOS** 9.0+, **Windows** 8+, **Web**, and **Android**.
    /// - **Android**: This will never be [None]. If the device doesn't support pressure
-    /// sensitivity, force will either be 0.0 or 1.0. Also see the
-    /// [android documentation](https://developer.android.com/reference/android/view/MotionEvent#AXIS_PRESSURE).
+    ///   sensitivity, force will either be 0.0 or 1.0. Also see the
+    ///   [android documentation](https://developer.android.com/reference/android/view/MotionEvent#AXIS_PRESSURE).
    pub force: Option<Force>,
    /// Unique identifier of a finger.
    pub id: u64,
@@ -1007,7 +1017,7 @@ mod tests {
        ($closure:expr) => {{
            #[allow(unused_mut)]
            let mut x = $closure;
-            let did = unsafe { event::DeviceId::dummy() };
+            let did = event::DeviceId::dummy();

            #[allow(deprecated)]
            {
@@ -1017,7 +1027,8 @@ mod tests {
                use crate::window::WindowId;

                // Mainline events.
-                let wid = unsafe { WindowId::dummy() };
+                let wid = WindowId::dummy();
+                x(UserEvent(()));
                x(NewEvents(event::StartCause::Init));
                x(AboutToWait);
                x(LoopExiting);
@@ -1101,12 +1112,25 @@ mod tests {
    #[allow(clippy::redundant_clone)]
    #[test]
    fn test_event_clone() {
-        foreach_event!(|event: event::Event| {
+        foreach_event!(|event: event::Event<()>| {
            let event2 = event.clone();
            assert_eq!(event, event2);
        })
    }

+    #[test]
+    fn test_map_nonuser_event() {
+        foreach_event!(|event: event::Event<()>| {
+            let is_user = matches!(event, event::Event::UserEvent(()));
+            let event2 = event.map_nonuser_event::<()>();
+            if is_user {
+                assert_eq!(event2, Err(event::Event::UserEvent(())));
+            } else {
+                assert!(event2.is_ok());
+            }
+        })
+    }
+
    #[test]
    fn test_force_normalize() {
        let force = event::Force::Normalized(0.0);
@@ -1127,12 +1151,12 @@ mod tests {
    #[allow(clippy::clone_on_copy)]
    #[test]
    fn ensure_attrs_do_not_panic() {
-        foreach_event!(|event: event::Event| {
+        foreach_event!(|event: event::Event<()>| {
            let _ = format!("{:?}", event);
        });
        let _ = event::StartCause::Init.clone();

-        let did = unsafe { crate::event::DeviceId::dummy() }.clone();
+        let did = crate::event::DeviceId::dummy().clone();
        HashSet::new().insert(did);
        let mut set = [did, did, did];
        set.sort_unstable();
--- a/src/event_loop.rs
+++ b/src/event_loop.rs
@@ -3,16 +3,15 @@
 //!
 //! If you want to send custom events to the event loop, use
 //! [`EventLoop::create_proxy`] to acquire an [`EventLoopProxy`] and call its
-//! [`wake_up`][EventLoopProxy::wake_up] method. Then during handling the wake up
-//! you can poll your event sources.
+//! [`send_event`][EventLoopProxy::send_event] method.
 //!
 //! See the root-level documentation for information on how to create and use an event loop to
 //! handle events.
-use std::fmt;
 use std::marker::PhantomData;
 #[cfg(any(x11_platform, wayland_platform))]
 use std::os::unix::io::{AsFd, AsRawFd, BorrowedFd, RawFd};
 use std::sync::atomic::{AtomicBool, AtomicUsize, Ordering};
+use std::{error, fmt};

 #[cfg(not(web_platform))]
 use std::time::{Duration, Instant};
@@ -21,9 +20,10 @@ use web_time::{Duration, Instant};

 use crate::application::ApplicationHandler;
 use crate::error::{EventLoopError, OsError};
+use crate::event::Event;
 use crate::monitor::MonitorHandle;
 use crate::platform_impl;
-use crate::window::{CustomCursor, CustomCursorSource, Window, WindowAttributes};
+use crate::window::{CustomCursor, CustomCursorSource, Theme, Window, WindowAttributes};

 /// Provides a way to retrieve events from the system and from the windows that were registered to
 /// the events loop.
@@ -40,8 +40,8 @@ use crate::window::{CustomCursor, CustomCursorSource, Window, WindowAttributes};
 /// [`EventLoopProxy`] allows you to wake up an `EventLoop` from another thread.
 ///
 /// [`Window`]: crate::window::Window
-pub struct EventLoop {
-    pub(crate) event_loop: platform_impl::EventLoop,
+pub struct EventLoop<T: 'static> {
+    pub(crate) event_loop: platform_impl::EventLoop<T>,
    pub(crate) _marker: PhantomData<*mut ()>, // Not Send nor Sync
 }

@@ -59,15 +59,16 @@ pub struct ActiveEventLoop {
 /// This is used to make specifying options that affect the whole application
 /// easier. But note that constructing multiple event loops is not supported.
 ///
-/// This can be created using [`EventLoop::builder`].
+/// This can be created using [`EventLoop::new`] or [`EventLoop::with_user_event`].
 #[derive(Default)]
-pub struct EventLoopBuilder {
+pub struct EventLoopBuilder<T: 'static> {
    pub(crate) platform_specific: platform_impl::PlatformSpecificEventLoopAttributes,
+    _p: PhantomData<T>,
 }

 static EVENT_LOOP_CREATED: AtomicBool = AtomicBool::new(false);

-impl EventLoopBuilder {
+impl EventLoopBuilder<()> {
    /// Start building a new event loop.
    #[inline]
    #[deprecated = "use `EventLoop::builder` instead"]
@@ -76,7 +77,7 @@ impl EventLoopBuilder {
    }
 }

-impl EventLoopBuilder {
+impl<T> EventLoopBuilder<T> {
    /// Builds a new event loop.
    ///
    /// ***For cross-platform compatibility, the [`EventLoop`] must be created on the main thread,
@@ -111,7 +112,7 @@ impl EventLoopBuilder {
        doc = "[`.with_android_app(app)`]: #only-available-on-android"
    )]
    #[inline]
-    pub fn build(&mut self) -> Result<EventLoop, EventLoopError> {
+    pub fn build(&mut self) -> Result<EventLoop<T>, EventLoopError> {
        let _span = tracing::debug_span!("winit::EventLoopBuilder::build").entered();

        if EVENT_LOOP_CREATED.swap(true, Ordering::Relaxed) {
@@ -132,7 +133,7 @@ impl EventLoopBuilder {
    }
 }

-impl fmt::Debug for EventLoop {
+impl<T> fmt::Debug for EventLoop<T> {
    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
        f.pad("EventLoop { .. }")
    }
@@ -146,12 +147,11 @@ impl fmt::Debug for ActiveEventLoop {

 /// Set through [`ActiveEventLoop::set_control_flow()`].
 ///
-/// Indicates the desired behavior of the event loop after [`about_to_wait`] is called.
+/// Indicates the desired behavior of the event loop after [`Event::AboutToWait`] is emitted.
 ///
 /// Defaults to [`Wait`].
 ///
 /// [`Wait`]: Self::Wait
-/// [`about_to_wait`]: crate::application::ApplicationHandler::about_to_wait
 #[derive(Copy, Clone, Debug, Default, PartialEq, Eq)]
 pub enum ControlFlow {
    /// When the current loop iteration finishes, immediately begin a new iteration regardless of
@@ -189,12 +189,12 @@ impl ControlFlow {
    }
 }

-impl EventLoop {
+impl EventLoop<()> {
    /// Create the event loop.
    ///
    /// This is an alias of `EventLoop::builder().build()`.
    #[inline]
-    pub fn new() -> Result<EventLoop, EventLoopError> {
+    pub fn new() -> Result<EventLoop<()>, EventLoopError> {
        Self::builder().build()
    }

@@ -204,12 +204,33 @@ impl EventLoop {
    ///
    /// To get the actual event loop, call [`build`][EventLoopBuilder::build] on that.
    #[inline]
-    pub fn builder() -> EventLoopBuilder {
-        EventLoopBuilder { platform_specific: Default::default() }
+    pub fn builder() -> EventLoopBuilder<()> {
+        Self::with_user_event()
    }
 }

-impl EventLoop {
+impl<T> EventLoop<T> {
+    /// Start building a new event loop, with the given type as the user event
+    /// type.
+    pub fn with_user_event() -> EventLoopBuilder<T> {
+        EventLoopBuilder { platform_specific: Default::default(), _p: PhantomData }
+    }
+
+    /// See [`run_app`].
+    ///
+    /// [`run_app`]: Self::run_app
+    #[inline]
+    #[deprecated = "use `EventLoop::run_app` instead"]
+    #[cfg(not(all(web_platform, target_feature = "exception-handling")))]
+    pub fn run<F>(self, event_handler: F) -> Result<(), EventLoopError>
+    where
+        F: FnMut(Event<T>, &ActiveEventLoop),
+    {
+        let _span = tracing::debug_span!("winit::EventLoop::run").entered();
+
+        self.event_loop.run(event_handler)
+    }
+
    /// Run the application with the event loop on the calling thread.
    ///
    /// See the [`set_control_flow()`] docs on how to change the event loop's behavior.
@@ -240,13 +261,13 @@ impl EventLoop {
    /// [^1]: `EventLoopExtWebSys::spawn_app()` is only available on Web.
    #[inline]
    #[cfg(not(all(web_platform, target_feature = "exception-handling")))]
-    pub fn run_app<A: ApplicationHandler>(self, app: &mut A) -> Result<(), EventLoopError> {
-        self.event_loop.run_app(app)
+    pub fn run_app<A: ApplicationHandler<T>>(self, app: &mut A) -> Result<(), EventLoopError> {
+        self.event_loop.run(|event, event_loop| dispatch_event_for_app(app, event_loop, event))
    }

    /// Creates an [`EventLoopProxy`] that can be used to dispatch user events
    /// to the main event loop, possibly from another thread.
-    pub fn create_proxy(&self) -> EventLoopProxy {
+    pub fn create_proxy(&self) -> EventLoopProxy<T> {
        EventLoopProxy { event_loop_proxy: self.event_loop.create_proxy() }
    }

@@ -302,14 +323,14 @@ impl EventLoop {
 }

 #[cfg(feature = "rwh_06")]
-impl rwh_06::HasDisplayHandle for EventLoop {
+impl<T> rwh_06::HasDisplayHandle for EventLoop<T> {
    fn display_handle(&self) -> Result<rwh_06::DisplayHandle<'_>, rwh_06::HandleError> {
        rwh_06::HasDisplayHandle::display_handle(self.event_loop.window_target())
    }
 }

 #[cfg(feature = "rwh_05")]
-unsafe impl rwh_05::HasRawDisplayHandle for EventLoop {
+unsafe impl<T> rwh_05::HasRawDisplayHandle for EventLoop<T> {
    /// Returns a [`rwh_05::RawDisplayHandle`] for the event loop.
    fn raw_display_handle(&self) -> rwh_05::RawDisplayHandle {
        rwh_05::HasRawDisplayHandle::raw_display_handle(self.event_loop.window_target())
@@ -317,7 +338,7 @@ unsafe impl rwh_05::HasRawDisplayHandle for EventLoop {
 }

 #[cfg(any(x11_platform, wayland_platform))]
-impl AsFd for EventLoop {
+impl<T> AsFd for EventLoop<T> {
    /// Get the underlying [EventLoop]'s `fd` which you can register
    /// into other event loop, like [`calloop`] or [`mio`]. When doing so, the
    /// loop must be polled with the [`pump_app_events`] API.
@@ -331,7 +352,7 @@ impl AsFd for EventLoop {
 }

 #[cfg(any(x11_platform, wayland_platform))]
-impl AsRawFd for EventLoop {
+impl<T> AsRawFd for EventLoop<T> {
    /// Get the underlying [EventLoop]'s raw `fd` which you can register
    /// into other event loop, like [`calloop`] or [`mio`]. When doing so, the
    /// loop must be polled with the [`pump_app_events`] API.
@@ -416,6 +437,17 @@ impl ActiveEventLoop {
        self.p.listen_device_events(allowed);
    }

+    /// Returns the current system theme.
+    ///
+    /// Returns `None` if it cannot be determined on the current platform.
+    ///
+    /// ## Platform-specific
+    ///
+    /// - **iOS / Android / Wayland / x11 / Orbital:** Unsupported.
+    pub fn system_theme(&self) -> Option<Theme> {
+        self.p.system_theme()
+    }
+
    /// Sets the [`ControlFlow`].
    pub fn set_control_flow(&self, control_flow: ControlFlow) {
        self.p.set_control_flow(control_flow)
@@ -428,7 +460,7 @@ impl ActiveEventLoop {

    /// This exits the event loop.
    ///
-    /// See [`exiting`][crate::application::ApplicationHandler::exiting].
+    /// See [`LoopExiting`][Event::LoopExiting].
    pub fn exit(&self) {
        let _span = tracing::debug_span!("winit::ActiveEventLoop::exit",).entered();

@@ -469,7 +501,7 @@ unsafe impl rwh_05::HasRawDisplayHandle for ActiveEventLoop {

 /// A proxy for the underlying display handle.
 ///
-/// The purpose of this type is to provide a cheaply clonable handle to the underlying
+/// The purpose of this type is to provide a cheaply cloneable handle to the underlying
 /// display handle. This is often used by graphics APIs to connect to the underlying APIs.
 /// It is difficult to keep a handle to the [`EventLoop`] type or the [`ActiveEventLoop`]
 /// type. In contrast, this type involves no lifetimes and can be persisted for as long as
@@ -513,39 +545,53 @@ unsafe impl rwh_05::HasRawDisplayHandle for OwnedDisplayHandle {
    }
 }

-/// Control the [`EventLoop`], possibly from a different thread, without referencing it directly.
-#[derive(Clone)]
-pub struct EventLoopProxy {
-    event_loop_proxy: platform_impl::EventLoopProxy,
+/// Used to send custom events to [`EventLoop`].
+pub struct EventLoopProxy<T: 'static> {
+    event_loop_proxy: platform_impl::EventLoopProxy<T>,
 }

-impl EventLoopProxy {
-    /// Wake up the [`EventLoop`], resulting in [`ApplicationHandler::proxy_wake_up()`] being
-    /// called.
-    ///
-    /// Calls to this method are coalesced into a single call to [`proxy_wake_up`], see the
-    /// documentation on that for details.
-    ///
-    /// If the event loop is no longer running, this is a no-op.
-    ///
-    /// [`proxy_wake_up`]: ApplicationHandler::proxy_wake_up
-    ///
-    /// # Platform-specific
-    ///
-    /// - **Windows**: The wake-up may be ignored under high contention, see [#3687].
-    ///
-    /// [#3687]: https://github.com/rust-windowing/winit/pull/3687
-    pub fn wake_up(&self) {
-        self.event_loop_proxy.wake_up();
+impl<T: 'static> Clone for EventLoopProxy<T> {
+    fn clone(&self) -> Self {
+        Self { event_loop_proxy: self.event_loop_proxy.clone() }
    }
 }

-impl fmt::Debug for EventLoopProxy {
+impl<T: 'static> EventLoopProxy<T> {
+    /// Send an event to the [`EventLoop`] from which this proxy was created. This emits a
+    /// `UserEvent(event)` event in the event loop, where `event` is the value passed to this
+    /// function.
+    ///
+    /// Returns an `Err` if the associated [`EventLoop`] no longer exists.
+    ///
+    /// [`UserEvent(event)`]: Event::UserEvent
+    pub fn send_event(&self, event: T) -> Result<(), EventLoopClosed<T>> {
+        let _span = tracing::debug_span!("winit::EventLoopProxy::send_event",).entered();
+
+        self.event_loop_proxy.send_event(event)
+    }
+}
+
+impl<T: 'static> fmt::Debug for EventLoopProxy<T> {
    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
        f.pad("EventLoopProxy { .. }")
    }
 }

+/// The error that is returned when an [`EventLoopProxy`] attempts to wake up an [`EventLoop`] that
+/// no longer exists.
+///
+/// Contains the original event given to [`EventLoopProxy::send_event`].
+#[derive(Copy, Clone, Debug, PartialEq, Eq, Hash)]
+pub struct EventLoopClosed<T>(pub T);
+
+impl<T> fmt::Display for EventLoopClosed<T> {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        f.write_str("Tried to wake up a closed `EventLoop`")
+    }
+}
+
+impl<T: fmt::Debug> error::Error for EventLoopClosed<T> {}
+
 /// Control when device events are captured.
 #[derive(Copy, Clone, PartialEq, Eq, PartialOrd, Ord, Hash, Debug, Default)]
 pub enum DeviceEvents {
@@ -583,3 +629,23 @@ impl AsyncRequestSerial {
        Self { serial }
    }
 }
+
+/// Shim for various run APIs.
+#[inline(always)]
+pub(crate) fn dispatch_event_for_app<T: 'static, A: ApplicationHandler<T>>(
+    app: &mut A,
+    event_loop: &ActiveEventLoop,
+    event: Event<T>,
+) {
+    match event {
+        Event::NewEvents(cause) => app.new_events(event_loop, cause),
+        Event::WindowEvent { window_id, event } => app.window_event(event_loop, window_id, event),
+        Event::DeviceEvent { device_id, event } => app.device_event(event_loop, device_id, event),
+        Event::UserEvent(event) => app.user_event(event_loop, event),
+        Event::Suspended => app.suspended(event_loop),
+        Event::Resumed => app.resumed(event_loop),
+        Event::AboutToWait => app.about_to_wait(event_loop),
+        Event::LoopExiting => app.exiting(event_loop),
+        Event::MemoryWarning => app.memory_warning(event_loop),
+    }
+}
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -7,7 +7,12 @@
 //!
 //! ```no_run
 //! use winit::event_loop::EventLoop;
-//! let event_loop = EventLoop::new().unwrap();
+//!
+//! # // Intentionally use `fn main` for clarity
+//! fn main() {
+//!     let event_loop = EventLoop::new().unwrap();
+//!     // ...
+//! }
 //! ```
 //!
 //! Then you create a [`Window`] with [`create_window`].
@@ -19,11 +24,12 @@
 //! window or a key getting pressed while the window is focused. Devices can generate
 //! [`DeviceEvent`]s, which contain unfiltered event data that isn't specific to a certain window.
 //! Some user activity, like mouse movement, can generate both a [`WindowEvent`] *and* a
-//! [`DeviceEvent`].
+//! [`DeviceEvent`]. You can also create and handle your own custom [`Event::UserEvent`]s, if
+//! desired.
 //!
 //! You can retrieve events by calling [`EventLoop::run_app()`]. This function will
 //! dispatch events for every [`Window`] that was created with that particular [`EventLoop`], and
-//! will run until [`exit()`] is used, at which point [`exiting()`] is called.
+//! will run until [`exit()`] is used, at which point [`Event::LoopExiting`].
 //!
 //! Winit no longer uses a `EventLoop::poll_events() -> impl Iterator<Event>`-based event loop
 //! model, since that can't be implemented properly on some platforms (e.g web, iOS) and works
@@ -83,19 +89,22 @@
 //!     }
 //! }
 //!
-//! let event_loop = EventLoop::new().unwrap();
+//! # // Intentionally use `fn main` for clarity
+//! fn main() {
+//!     let event_loop = EventLoop::new().unwrap();
 //!
-//! // ControlFlow::Poll continuously runs the event loop, even if the OS hasn't
-//! // dispatched any events. This is ideal for games and similar applications.
-//! event_loop.set_control_flow(ControlFlow::Poll);
+//!     // ControlFlow::Poll continuously runs the event loop, even if the OS hasn't
+//!     // dispatched any events. This is ideal for games and similar applications.
+//!     event_loop.set_control_flow(ControlFlow::Poll);
 //!
-//! // ControlFlow::Wait pauses the event loop if no events are available to process.
-//! // This is ideal for non-game applications that only update in response to user
-//! // input, and uses significantly less power/CPU time than ControlFlow::Poll.
-//! event_loop.set_control_flow(ControlFlow::Wait);
+//!     // ControlFlow::Wait pauses the event loop if no events are available to process.
+//!     // This is ideal for non-game applications that only update in response to user
+//!     // input, and uses significantly less power/CPU time than ControlFlow::Poll.
+//!     event_loop.set_control_flow(ControlFlow::Wait);
 //!
-//! let mut app = App::default();
-//! event_loop.run_app(&mut app);
+//!     let mut app = App::default();
+//!     event_loop.run_app(&mut app);
+//! }
 //! ```
 //!
 //! [`WindowEvent`] has a [`WindowId`] member. In multi-window environments, it should be
@@ -162,7 +171,7 @@
 //! [`WindowEvent`]: event::WindowEvent
 //! [`DeviceEvent`]: event::DeviceEvent
 //! [`Event::UserEvent`]: event::Event::UserEvent
-//! [`exiting()`]: crate::application::ApplicationHandler::exiting
+//! [`Event::LoopExiting`]: event::Event::LoopExiting
 //! [`raw_window_handle`]: ./window/struct.Window.html#method.raw_window_handle
 //! [`raw_display_handle`]: ./window/struct.Window.html#method.raw_display_handle
 //! [^1]: `EventLoopExtPumpEvents::pump_app_events()` is only available on Windows, macOS, Android, X11 and Wayland.
--- a/src/platform/android.rs
+++ b/src/platform/android.rs
@@ -62,7 +62,7 @@
 //! If your application is currently based on `NativeActivity` via the `ndk-glue` crate and building
 //! with `cargo apk`, then the minimal changes would be:
 //! 1. Remove `ndk-glue` from your `Cargo.toml`
-//! 2. Enable the `"android-native-activity"` feature for Winit: `winit = { version = "0.30.3",
+//! 2. Enable the `"android-native-activity"` feature for Winit: `winit = { version = "0.30.7",
 //!    features = [ "android-native-activity" ] }`
 //! 3. Add an `android_main` entrypoint (as above), instead of using the '`[ndk_glue::main]` proc
 //!    macro from `ndk-macros` (optionally add a dependency on `android_logger` and initialize
@@ -76,12 +76,22 @@ use crate::window::{Window, WindowAttributes};
 use self::activity::{AndroidApp, ConfigurationRef, Rect};

 /// Additional methods on [`EventLoop`] that are specific to Android.
-pub trait EventLoopExtAndroid {}
+pub trait EventLoopExtAndroid {
+    /// Get the [`AndroidApp`] which was used to create this event loop.
+    fn android_app(&self) -> &AndroidApp;
+}

-impl EventLoopExtAndroid for EventLoop {}
+impl<T> EventLoopExtAndroid for EventLoop<T> {
+    fn android_app(&self) -> &AndroidApp {
+        &self.event_loop.android_app
+    }
+}

 /// Additional methods on [`ActiveEventLoop`] that are specific to Android.
-pub trait ActiveEventLoopExtAndroid {}
+pub trait ActiveEventLoopExtAndroid {
+    /// Get the [`AndroidApp`] which was used to create this event loop.
+    fn android_app(&self) -> &AndroidApp;
+}

 /// Additional methods on [`Window`] that are specific to Android.
 pub trait WindowExtAndroid {
@@ -100,7 +110,11 @@ impl WindowExtAndroid for Window {
    }
 }

-impl ActiveEventLoopExtAndroid for ActiveEventLoop {}
+impl ActiveEventLoopExtAndroid for ActiveEventLoop {
+    fn android_app(&self) -> &AndroidApp {
+        &self.p.app
+    }
+}

 /// Additional methods on [`WindowAttributes`] that are specific to Android.
 pub trait WindowAttributesExtAndroid {}
@@ -108,9 +122,9 @@ pub trait WindowAttributesExtAndroid {}
 impl WindowAttributesExtAndroid for WindowAttributes {}

 pub trait EventLoopBuilderExtAndroid {
-    /// Associates the `AndroidApp` that was passed to `android_main()` with the event loop
+    /// Associates the [`AndroidApp`] that was passed to `android_main()` with the event loop
    ///
-    /// This must be called on Android since the `AndroidApp` is not global state.
+    /// This must be called on Android since the [`AndroidApp`] is not global state.
    fn with_android_app(&mut self, app: AndroidApp) -> &mut Self;

    /// Calling this will mark the volume keys to be manually handled by the application
@@ -119,7 +133,7 @@ pub trait EventLoopBuilderExtAndroid {
    fn handle_volume_keys(&mut self) -> &mut Self;
 }

-impl EventLoopBuilderExtAndroid for EventLoopBuilder {
+impl<T> EventLoopBuilderExtAndroid for EventLoopBuilder<T> {
    fn with_android_app(&mut self, app: AndroidApp) -> &mut Self {
        self.platform_specific.android_app = Some(app);
        self
@@ -147,7 +161,7 @@ impl EventLoopBuilderExtAndroid for EventLoopBuilder {
 /// depending on the `android_activity` crate, and instead consume the API that
 /// is re-exported by Winit.
 ///
-/// For compatibility applications should then import the `AndroidApp` type for
+/// For compatibility applications should then import the [`AndroidApp`] type for
 /// their `android_main(app: AndroidApp)` function like:
 /// ```rust
 /// #[cfg(target_os = "android")]
--- a/src/platform/ios.rs
+++ b/src/platform/ios.rs
@@ -66,9 +66,22 @@

 use std::os::raw::c_void;

+use crate::event_loop::EventLoop;
 use crate::monitor::{MonitorHandle, VideoModeHandle};
 use crate::window::{Window, WindowAttributes};

+/// Additional methods on [`EventLoop`] that are specific to iOS.
+pub trait EventLoopExtIOS {
+    /// Returns the [`Idiom`] (phone/tablet/tv/etc) for the current device.
+    fn idiom(&self) -> Idiom;
+}
+
+impl<T: 'static> EventLoopExtIOS for EventLoop<T> {
+    fn idiom(&self) -> Idiom {
+        self.event_loop.idiom()
+    }
+}
+
 /// Additional methods on [`Window`] that are specific to iOS.
 pub trait WindowExtIOS {
    /// Sets the [`contentScaleFactor`] of the underlying [`UIWindow`] to `scale_factor`.
@@ -366,6 +379,24 @@ pub enum ValidOrientations {
    Portrait,
 }

+/// The device [idiom].
+///
+/// [idiom]: https://developer.apple.com/documentation/uikit/uidevice/1620037-userinterfaceidiom?language=objc
+#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
+pub enum Idiom {
+    Unspecified,
+
+    /// iPhone and iPod touch.
+    Phone,
+
+    /// iPad.
+    Pad,
+
+    /// tvOS and Apple TV.
+    TV,
+    CarPlay,
+}
+
 bitflags::bitflags! {
    /// The [edges] of a screen.
    ///
--- a/src/platform/macos.rs
+++ b/src/platform/macos.rs
@@ -94,6 +94,12 @@ pub trait WindowExtMacOS {

    /// Getter for the [`WindowExtMacOS::set_option_as_alt`].
    fn option_as_alt(&self) -> OptionAsAlt;
+
+    /// Disable the Menu Bar and Dock in Borderless Fullscreen mode. Useful for games.
+    fn set_borderless_game(&self, borderless_game: bool);
+
+    /// Getter for the [`WindowExtMacOS::set_borderless_game`].
+    fn is_borderless_game(&self) -> bool;
 }

 impl WindowExtMacOS for Window {
@@ -166,6 +172,16 @@ impl WindowExtMacOS for Window {
    fn option_as_alt(&self) -> OptionAsAlt {
        self.window.maybe_wait_on_main(|w| w.option_as_alt())
    }
+
+    #[inline]
+    fn set_borderless_game(&self, borderless_game: bool) {
+        self.window.maybe_wait_on_main(|w| w.set_borderless_game(borderless_game))
+    }
+
+    #[inline]
+    fn is_borderless_game(&self) -> bool {
+        self.window.maybe_wait_on_main(|w| w.is_borderless_game())
+    }
 }

 /// Corresponds to `NSApplicationActivationPolicy`.
@@ -216,6 +232,8 @@ pub trait WindowAttributesExtMacOS {
    ///
    /// See [`WindowExtMacOS::set_option_as_alt`] for details on what this means if set.
    fn with_option_as_alt(self, option_as_alt: OptionAsAlt) -> Self;
+    /// See [`WindowExtMacOS::set_borderless_game`] for details on what this means if set.
+    fn with_borderless_game(self, borderless_game: bool) -> Self;
 }

 impl WindowAttributesExtMacOS for WindowAttributes {
@@ -284,12 +302,21 @@ impl WindowAttributesExtMacOS for WindowAttributes {
        self.platform_specific.option_as_alt = option_as_alt;
        self
    }
+
+    #[inline]
+    fn with_borderless_game(mut self, borderless_game: bool) -> Self {
+        self.platform_specific.borderless_game = borderless_game;
+        self
+    }
 }

 pub trait EventLoopBuilderExtMacOS {
-    /// Sets the activation policy for the application.
+    /// Sets the activation policy for the application. If used, this will override
+    /// any relevant settings provided in the package manifest.
+    /// For instance, `with_activation_policy(ActivationPolicy::Regular)` will prevent
+    /// the application from running as an "agent", even if LSUIElement is set to true.
    ///
-    /// It is set to [`ActivationPolicy::Regular`] by default.
+    /// If unused, the Winit will honor the package manifest.
    ///
    /// # Example
    ///
@@ -338,10 +365,10 @@ pub trait EventLoopBuilderExtMacOS {
    fn with_activate_ignoring_other_apps(&mut self, ignore: bool) -> &mut Self;
 }

-impl EventLoopBuilderExtMacOS for EventLoopBuilder {
+impl<T> EventLoopBuilderExtMacOS for EventLoopBuilder<T> {
    #[inline]
    fn with_activation_policy(&mut self, activation_policy: ActivationPolicy) -> &mut Self {
-        self.platform_specific.activation_policy = activation_policy;
+        self.platform_specific.activation_policy = Some(activation_policy);
        self
    }

--- a/src/platform/pump_events.rs
+++ b/src/platform/pump_events.rs
@@ -1,10 +1,14 @@
 use std::time::Duration;

 use crate::application::ApplicationHandler;
-use crate::event_loop::EventLoop;
+use crate::event::Event;
+use crate::event_loop::{self, ActiveEventLoop, EventLoop};

 /// Additional methods on [`EventLoop`] for pumping events within an external event loop
 pub trait EventLoopExtPumpEvents {
+    /// A type provided by the user that can be passed through [`Event::UserEvent`].
+    type UserEvent: 'static;
+
    /// Pump the `EventLoop` to check for and dispatch pending events.
    ///
    /// This API is designed to enable applications to integrate Winit into an
@@ -48,18 +52,18 @@ pub trait EventLoopExtPumpEvents {
    /// - `RedrawRequested` events, used to schedule rendering.
    ///
    ///     macOS for example uses a `drawRect` callback to drive rendering
-    /// within applications and expects rendering to be finished before
-    /// the `drawRect` callback returns.
+    ///     within applications and expects rendering to be finished before
+    ///     the `drawRect` callback returns.
    ///
    ///     For portability it's strongly recommended that applications should
-    /// keep their rendering inside the closure provided to Winit.
+    ///     keep their rendering inside the closure provided to Winit.
    /// - Any lifecycle events, such as `Suspended` / `Resumed`.
    ///
    ///     The handling of these events needs to be synchronized with the
-    /// operating system and it would never be appropriate to buffer a
-    /// notification that your application has been suspended or resumed and
-    /// then handled that later since there would always be a chance that
-    /// other lifecycle events occur while the event is buffered.
+    ///     operating system and it would never be appropriate to buffer a
+    ///     notification that your application has been suspended or resumed and
+    ///     then handled that later since there would always be a chance that
+    ///     other lifecycle events occur while the event is buffered.
    ///
    /// ## Supported Platforms
    ///
@@ -70,13 +74,13 @@ pub trait EventLoopExtPumpEvents {
    ///
    /// ## Unsupported Platforms
    ///
-    /// - **Web:**  This API is fundamentally incompatible with the event-based way in which
-    /// Web browsers work because it's not possible to have a long-running external
-    /// loop that would block the browser and there is nothing that can be
-    /// polled to ask for new new events. Events are delivered via callbacks based
-    /// on an event loop that is internal to the browser itself.
+    /// - **Web:**  This API is fundamentally incompatible with the event-based way in which Web
+    ///   browsers work because it's not possible to have a long-running external loop that would
+    ///   block the browser and there is nothing that can be polled to ask for new new events.
+    ///   Events are delivered via callbacks based on an event loop that is internal to the browser
+    ///   itself.
    /// - **iOS:** It's not possible to stop and start an `NSApplication` repeatedly on iOS so
-    /// there's no way to support the same approach to polling as on MacOS.
+    ///   there's no way to support the same approach to polling as on MacOS.
    ///
    /// ## Platform-specific
    ///
@@ -99,20 +103,34 @@ pub trait EventLoopExtPumpEvents {
    ///   If you render outside of Winit you are likely to see window resizing artifacts
    ///   since MacOS expects applications to render synchronously during any `drawRect`
    ///   callback.
-    fn pump_app_events<A: ApplicationHandler>(
-        &mut self,
-        timeout: Option<Duration>,
-        app: &mut A,
-    ) -> PumpStatus;
-}
-
-impl EventLoopExtPumpEvents for EventLoop {
-    fn pump_app_events<A: ApplicationHandler>(
+    fn pump_app_events<A: ApplicationHandler<Self::UserEvent>>(
        &mut self,
        timeout: Option<Duration>,
        app: &mut A,
    ) -> PumpStatus {
-        self.event_loop.pump_app_events(timeout, app)
+        #[allow(deprecated)]
+        self.pump_events(timeout, |event, event_loop| {
+            event_loop::dispatch_event_for_app(app, event_loop, event)
+        })
+    }
+
+    /// See [`pump_app_events`].
+    ///
+    /// [`pump_app_events`]: Self::pump_app_events
+    #[deprecated = "use EventLoopExtPumpEvents::pump_app_events"]
+    fn pump_events<F>(&mut self, timeout: Option<Duration>, event_handler: F) -> PumpStatus
+    where
+        F: FnMut(Event<Self::UserEvent>, &ActiveEventLoop);
+}
+
+impl<T> EventLoopExtPumpEvents for EventLoop<T> {
+    type UserEvent = T;
+
+    fn pump_events<F>(&mut self, timeout: Option<Duration>, event_handler: F) -> PumpStatus
+    where
+        F: FnMut(Event<Self::UserEvent>, &ActiveEventLoop),
+    {
+        self.event_loop.pump_events(timeout, event_handler)
    }
 }

--- a/src/platform/run_on_demand.rs
+++ b/src/platform/run_on_demand.rs
@@ -1,12 +1,24 @@
 use crate::application::ApplicationHandler;
 use crate::error::EventLoopError;
-use crate::event_loop::{ActiveEventLoop, EventLoop};
+use crate::event::Event;
+use crate::event_loop::{self, ActiveEventLoop, EventLoop};

 #[cfg(doc)]
 use crate::{platform::pump_events::EventLoopExtPumpEvents, window::Window};

 /// Additional methods on [`EventLoop`] to return control flow to the caller.
 pub trait EventLoopExtRunOnDemand {
+    /// A type provided by the user that can be passed through [`Event::UserEvent`].
+    type UserEvent: 'static;
+
+    /// See [`run_app_on_demand`].
+    ///
+    /// [`run_app_on_demand`]: Self::run_app_on_demand
+    #[deprecated = "use EventLoopExtRunOnDemand::run_app_on_demand"]
+    fn run_on_demand<F>(&mut self, event_handler: F) -> Result<(), EventLoopError>
+    where
+        F: FnMut(Event<Self::UserEvent>, &ActiveEventLoop);
+
    /// Run the application with the event loop on the calling thread.
    ///
    /// Unlike [`EventLoop::run_app`], this function accepts non-`'static` (i.e. non-`move`)
@@ -30,7 +42,9 @@ pub trait EventLoopExtRunOnDemand {
    /// # Caveats
    /// - This extension isn't available on all platforms, since it's not always possible to return
    ///   to the caller (specifically this is impossible on iOS and Web - though with the Web
-    ///   backend it is possible to use `EventLoopExtWebSys::spawn()`[^1] more than once instead).
+    ///   backend it is possible to use `EventLoopExtWebSys::spawn()`
+    #[cfg_attr(not(web_platform), doc = "[^1]")]
+    ///   more than once instead).
    /// - No [`Window`] state can be carried between separate runs of the event loop.
    ///
    /// You are strongly encouraged to use [`EventLoop::run_app()`] for portability, unless you
@@ -53,19 +67,26 @@ pub trait EventLoopExtRunOnDemand {
    ///
    /// [`exit()`]: ActiveEventLoop::exit()
    /// [`set_control_flow()`]: ActiveEventLoop::set_control_flow()
-    fn run_app_on_demand<A: ApplicationHandler>(
-        &mut self,
-        app: &mut A,
-    ) -> Result<(), EventLoopError>;
-}
-
-impl EventLoopExtRunOnDemand for EventLoop {
-    fn run_app_on_demand<A: ApplicationHandler>(
+    fn run_app_on_demand<A: ApplicationHandler<Self::UserEvent>>(
        &mut self,
        app: &mut A,
    ) -> Result<(), EventLoopError> {
+        #[allow(deprecated)]
+        self.run_on_demand(|event, event_loop| {
+            event_loop::dispatch_event_for_app(app, event_loop, event)
+        })
+    }
+}
+
+impl<T> EventLoopExtRunOnDemand for EventLoop<T> {
+    type UserEvent = T;
+
+    fn run_on_demand<F>(&mut self, event_handler: F) -> Result<(), EventLoopError>
+    where
+        F: FnMut(Event<Self::UserEvent>, &ActiveEventLoop),
+    {
        self.event_loop.window_target().clear_exit();
-        self.event_loop.run_app_on_demand(app)
+        self.event_loop.run_on_demand(event_handler)
    }
 }

--- a/src/platform/wayland.rs
+++ b/src/platform/wayland.rs
@@ -38,7 +38,7 @@ pub trait EventLoopExtWayland {
    fn is_wayland(&self) -> bool;
 }

-impl EventLoopExtWayland for EventLoop {
+impl<T: 'static> EventLoopExtWayland for EventLoop<T> {
    #[inline]
    fn is_wayland(&self) -> bool {
        self.event_loop.is_wayland()
@@ -57,7 +57,7 @@ pub trait EventLoopBuilderExtWayland {
    fn with_any_thread(&mut self, any_thread: bool) -> &mut Self;
 }

-impl EventLoopBuilderExtWayland for EventLoopBuilder {
+impl<T> EventLoopBuilderExtWayland for EventLoopBuilder<T> {
    #[inline]
    fn with_wayland(&mut self) -> &mut Self {
        self.platform_specific.forced_backend = Some(crate::platform_impl::Backend::Wayland);
--- a/src/platform/web.rs
+++ b/src/platform/web.rs
@@ -55,7 +55,8 @@ use web_sys::HtmlCanvasElement;

 use crate::application::ApplicationHandler;
 use crate::cursor::CustomCursorSource;
-use crate::event_loop::{ActiveEventLoop, EventLoop};
+use crate::event::Event;
+use crate::event_loop::{self, ActiveEventLoop, EventLoop};
 #[cfg(web_platform)]
 use crate::platform_impl::CustomCursorFuture as PlatformCustomCursorFuture;
 use crate::platform_impl::PlatformCustomCursorSource;
@@ -155,6 +156,9 @@ impl WindowAttributesExtWebSys for WindowAttributes {

 /// Additional methods on `EventLoop` that are specific to the web.
 pub trait EventLoopExtWebSys {
+    /// A type provided by the user that can be passed through `Event::UserEvent`.
+    type UserEvent: 'static;
+
    /// Initializes the winit event loop.
    ///
    /// Unlike
@@ -177,7 +181,15 @@ pub trait EventLoopExtWebSys {
        doc = "[`run_app()`]: EventLoop::run_app()"
    )]
    /// [^1]: `run_app()` is _not_ available on WASM when the target supports `exception-handling`.
-    fn spawn_app<A: ApplicationHandler + 'static>(self, app: A);
+    fn spawn_app<A: ApplicationHandler<Self::UserEvent> + 'static>(self, app: A);
+
+    /// See [`spawn_app`].
+    ///
+    /// [`spawn_app`]: Self::spawn_app
+    #[deprecated = "use EventLoopExtWebSys::spawn_app"]
+    fn spawn<F>(self, event_handler: F)
+    where
+        F: 'static + FnMut(Event<Self::UserEvent>, &ActiveEventLoop);

    /// Sets the strategy for [`ControlFlow::Poll`].
    ///
@@ -208,9 +220,20 @@ pub trait EventLoopExtWebSys {
    fn wait_until_strategy(&self) -> WaitUntilStrategy;
 }

-impl EventLoopExtWebSys for EventLoop {
-    fn spawn_app<A: ApplicationHandler + 'static>(self, app: A) {
-        self.event_loop.spawn_app(app);
+impl<T> EventLoopExtWebSys for EventLoop<T> {
+    type UserEvent = T;
+
+    fn spawn_app<A: ApplicationHandler<Self::UserEvent> + 'static>(self, mut app: A) {
+        self.event_loop.spawn(move |event, event_loop| {
+            event_loop::dispatch_event_for_app(&mut app, event_loop, event)
+        });
+    }
+
+    fn spawn<F>(self, event_handler: F)
+    where
+        F: 'static + FnMut(Event<Self::UserEvent>, &ActiveEventLoop),
+    {
+        self.event_loop.spawn(event_handler)
    }

    fn set_poll_strategy(&self, strategy: PollStrategy) {
@@ -399,7 +422,7 @@ impl fmt::Display for BadAnimation {
    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
        match self {
            Self::Empty => write!(f, "No cursors supplied"),
-            Self::Animation => write!(f, "A supplied cursor is an animtion"),
+            Self::Animation => write!(f, "A supplied cursor is an animation"),
        }
    }
 }
@@ -438,3 +461,5 @@ impl Display for CustomCursorError {
        }
    }
 }
+
+impl Error for CustomCursorError {}
--- a/src/platform/windows.rs
+++ b/src/platform/windows.rs
@@ -227,7 +227,7 @@ pub trait EventLoopBuilderExtWindows {
        F: FnMut(*const c_void) -> bool + 'static;
 }

-impl EventLoopBuilderExtWindows for EventLoopBuilder {
+impl<T> EventLoopBuilderExtWindows for EventLoopBuilder<T> {
    #[inline]
    fn with_any_thread(&mut self, any_thread: bool) -> &mut Self {
        self.platform_specific.any_thread = any_thread;
--- a/src/platform/x11.rs
+++ b/src/platform/x11.rs
@@ -81,9 +81,7 @@ pub type XWindow = u32;
 #[inline]
 pub fn register_xlib_error_hook(hook: XlibErrorHook) {
    // Append new hook.
-    unsafe {
-        crate::platform_impl::XLIB_ERROR_HOOKS.lock().unwrap().push(hook);
-    }
+    crate::platform_impl::XLIB_ERROR_HOOKS.lock().unwrap().push(hook);
 }

 /// Additional methods on [`ActiveEventLoop`] that are specific to X11.
@@ -105,7 +103,7 @@ pub trait EventLoopExtX11 {
    fn is_x11(&self) -> bool;
 }

-impl EventLoopExtX11 for EventLoop {
+impl<T: 'static> EventLoopExtX11 for EventLoop<T> {
    #[inline]
    fn is_x11(&self) -> bool {
        !self.event_loop.is_wayland()
@@ -124,7 +122,7 @@ pub trait EventLoopBuilderExtX11 {
    fn with_any_thread(&mut self, any_thread: bool) -> &mut Self;
 }

-impl EventLoopBuilderExtX11 for EventLoopBuilder {
+impl<T> EventLoopBuilderExtX11 for EventLoopBuilder<T> {
    #[inline]
    fn with_x11(&mut self) -> &mut Self {
        self.platform_specific.forced_backend = Some(crate::platform_impl::Backend::X);
--- a/src/platform_impl/android/mod.rs
+++ b/src/platform_impl/android/mod.rs
@@ -3,7 +3,7 @@ use std::collections::VecDeque;
 use std::hash::Hash;
 use std::marker::PhantomData;
 use std::sync::atomic::{AtomicBool, Ordering};
-use std::sync::{Arc, Mutex};
+use std::sync::{mpsc, Arc, Mutex};
 use std::time::{Duration, Instant};

 use android_activity::input::{InputEvent, KeyAction, Keycode, MotionAction};
@@ -12,13 +12,12 @@ use android_activity::{
 };
 use tracing::{debug, trace, warn};

-use crate::application::ApplicationHandler;
 use crate::cursor::Cursor;
 use crate::dpi::{PhysicalPosition, PhysicalSize, Position, Size};
 use crate::error;
 use crate::error::EventLoopError;
 use crate::event::{self, Force, InnerSizeWriter, StartCause};
-use crate::event_loop::{self, ControlFlow, DeviceEvents};
+use crate::event_loop::{self, ActiveEventLoop as RootAEL, ControlFlow, DeviceEvents};
 use crate::platform::pump_events::PumpStatus;
 use crate::platform_impl::Fullscreen;
 use crate::window::{
@@ -42,6 +41,41 @@ fn min_timeout(a: Option<Duration>, b: Option<Duration>) -> Option<Duration> {
    a.map_or(b, |a_timeout| b.map_or(Some(a_timeout), |b_timeout| Some(a_timeout.min(b_timeout))))
 }

+struct PeekableReceiver<T> {
+    recv: mpsc::Receiver<T>,
+    first: Option<T>,
+}
+
+impl<T> PeekableReceiver<T> {
+    pub fn from_recv(recv: mpsc::Receiver<T>) -> Self {
+        Self { recv, first: None }
+    }
+
+    pub fn has_incoming(&mut self) -> bool {
+        if self.first.is_some() {
+            return true;
+        }
+        match self.recv.try_recv() {
+            Ok(v) => {
+                self.first = Some(v);
+                true
+            },
+            Err(mpsc::TryRecvError::Empty) => false,
+            Err(mpsc::TryRecvError::Disconnected) => {
+                warn!("Channel was disconnected when checking incoming");
+                false
+            },
+        }
+    }
+
+    pub fn try_recv(&mut self) -> Result<T, mpsc::TryRecvError> {
+        if let Some(first) = self.first.take() {
+            return Ok(first);
+        }
+        self.recv.try_recv()
+    }
+}
+
 #[derive(Clone)]
 struct SharedFlagSetter {
    flag: Arc<AtomicBool>,
@@ -97,12 +131,13 @@ impl RedrawRequester {
 #[derive(Debug, Clone, Eq, PartialEq, Hash)]
 pub struct KeyEventExtra {}

-pub struct EventLoop {
-    android_app: AndroidApp,
+pub struct EventLoop<T: 'static> {
+    pub(crate) android_app: AndroidApp,
    window_target: event_loop::ActiveEventLoop,
    redraw_flag: SharedFlag,
-    proxy_wake_up: Arc<AtomicBool>,
-    loop_running: bool, // Dispatched `NewEvents<Init>`
+    user_events_sender: mpsc::Sender<T>,
+    user_events_receiver: PeekableReceiver<T>, // must wake looper whenever something gets sent
+    loop_running: bool,                        // Dispatched `NewEvents<Init>`
    running: bool,
    pending_redraw: bool,
    cause: StartCause,
@@ -122,11 +157,11 @@ impl Default for PlatformSpecificEventLoopAttributes {
    }
 }

-impl EventLoop {
+impl<T: 'static> EventLoop<T> {
    pub(crate) fn new(
        attributes: &PlatformSpecificEventLoopAttributes,
    ) -> Result<Self, EventLoopError> {
-        let proxy_wake_up = Arc::new(AtomicBool::new(false));
+        let (user_events_sender, user_events_receiver) = mpsc::channel();

        let android_app = attributes.android_app.as_ref().expect(
            "An `AndroidApp` as passed to android_main() is required to create an `EventLoop` on \
@@ -149,7 +184,8 @@ impl EventLoop {
                _marker: PhantomData,
            },
            redraw_flag,
-            proxy_wake_up,
+            user_events_sender,
+            user_events_receiver: PeekableReceiver::from_recv(user_events_receiver),
            loop_running: false,
            running: false,
            pending_redraw: false,
@@ -159,28 +195,27 @@ impl EventLoop {
        })
    }

-    fn single_iteration<A: ApplicationHandler>(
-        &mut self,
-        main_event: Option<MainEvent<'_>>,
-        app: &mut A,
-    ) {
+    fn single_iteration<F>(&mut self, main_event: Option<MainEvent<'_>>, callback: &mut F)
+    where
+        F: FnMut(event::Event<T>, &RootAEL),
+    {
        trace!("Mainloop iteration");

        let cause = self.cause;
        let mut pending_redraw = self.pending_redraw;
        let mut resized = false;

-        app.new_events(self.window_target(), cause);
+        callback(event::Event::NewEvents(cause), self.window_target());

        if let Some(event) = main_event {
            trace!("Handling main event {:?}", event);

            match event {
                MainEvent::InitWindow { .. } => {
-                    app.resumed(self.window_target());
+                    callback(event::Event::Resumed, self.window_target());
                },
                MainEvent::TerminateWindow { .. } => {
-                    app.suspended(self.window_target());
+                    callback(event::Event::Suspended, self.window_target());
                },
                MainEvent::WindowResized { .. } => resized = true,
                MainEvent::RedrawNeeded { .. } => pending_redraw = true,
@@ -189,15 +224,23 @@ impl EventLoop {
                },
                MainEvent::GainedFocus => {
                    HAS_FOCUS.store(true, Ordering::Relaxed);
-                    let window_id = window::WindowId(WindowId);
-                    let event = event::WindowEvent::Focused(true);
-                    app.window_event(self.window_target(), window_id, event);
+                    callback(
+                        event::Event::WindowEvent {
+                            window_id: window::WindowId(WindowId),
+                            event: event::WindowEvent::Focused(true),
+                        },
+                        self.window_target(),
+                    );
                },
                MainEvent::LostFocus => {
                    HAS_FOCUS.store(false, Ordering::Relaxed);
-                    let window_id = window::WindowId(WindowId);
-                    let event = event::WindowEvent::Focused(false);
-                    app.window_event(self.window_target(), window_id, event);
+                    callback(
+                        event::Event::WindowEvent {
+                            window_id: window::WindowId(WindowId),
+                            event: event::WindowEvent::Focused(false),
+                        },
+                        self.window_target(),
+                    );
                },
                MainEvent::ConfigChanged { .. } => {
                    let monitor = MonitorHandle::new(self.android_app.clone());
@@ -207,19 +250,20 @@ impl EventLoop {
                        let new_inner_size = Arc::new(Mutex::new(
                            MonitorHandle::new(self.android_app.clone()).size(),
                        ));
-                        let window_id = window::WindowId(WindowId);
-                        let event = event::WindowEvent::ScaleFactorChanged {
-                            inner_size_writer: InnerSizeWriter::new(Arc::downgrade(
-                                &new_inner_size,
-                            )),
-                            scale_factor,
+                        let event = event::Event::WindowEvent {
+                            window_id: window::WindowId(WindowId),
+                            event: event::WindowEvent::ScaleFactorChanged {
+                                inner_size_writer: InnerSizeWriter::new(Arc::downgrade(
+                                    &new_inner_size,
+                                )),
+                                scale_factor,
+                            },
                        };
-
-                        app.window_event(self.window_target(), window_id, event);
+                        callback(event, self.window_target());
                    }
                },
                MainEvent::LowMemory => {
-                    app.memory_warning(self.window_target());
+                    callback(event::Event::MemoryWarning, self.window_target());
                },
                MainEvent::Start => {
                    // XXX: how to forward this state to applications?
@@ -267,7 +311,7 @@ impl EventLoop {
        match android_app.input_events_iter() {
            Ok(mut input_iter) => loop {
                let read_event =
-                    input_iter.next(|event| self.handle_input_event(&android_app, event, app));
+                    input_iter.next(|event| self.handle_input_event(&android_app, event, callback));

                if !read_event {
                    break;
@@ -278,8 +322,11 @@ impl EventLoop {
            },
        }

-        if self.proxy_wake_up.swap(false, Ordering::Relaxed) {
-            app.proxy_wake_up(self.window_target());
+        // Empty the user event buffer
+        {
+            while let Ok(event) = self.user_events_receiver.try_recv() {
+                callback(crate::event::Event::UserEvent(event), self.window_target());
+            }
        }

        if self.running {
@@ -291,32 +338,39 @@ impl EventLoop {
                } else {
                    PhysicalSize::new(0, 0)
                };
-                let window_id = window::WindowId(WindowId);
-                let event = event::WindowEvent::Resized(size);
-                app.window_event(self.window_target(), window_id, event);
+                let event = event::Event::WindowEvent {
+                    window_id: window::WindowId(WindowId),
+                    event: event::WindowEvent::Resized(size),
+                };
+                callback(event, self.window_target());
            }

            pending_redraw |= self.redraw_flag.get_and_reset();
            if pending_redraw {
                pending_redraw = false;
-                let window_id = window::WindowId(WindowId);
-                let event = event::WindowEvent::RedrawRequested;
-                app.window_event(self.window_target(), window_id, event);
+                let event = event::Event::WindowEvent {
+                    window_id: window::WindowId(WindowId),
+                    event: event::WindowEvent::RedrawRequested,
+                };
+                callback(event, self.window_target());
            }
        }

        // This is always the last event we dispatch before poll again
-        app.about_to_wait(self.window_target());
+        callback(event::Event::AboutToWait, self.window_target());

        self.pending_redraw = pending_redraw;
    }

-    fn handle_input_event<A: ApplicationHandler>(
+    fn handle_input_event<F>(
        &mut self,
        android_app: &AndroidApp,
        event: &InputEvent<'_>,
-        app: &mut A,
-    ) -> InputStatus {
+        callback: &mut F,
+    ) -> InputStatus
+    where
+        F: FnMut(event::Event<T>, &RootAEL),
+    {
        let mut input_status = InputStatus::Handled;
        match event {
            InputEvent::MotionEvent(motion_event) => {
@@ -354,16 +408,17 @@ impl EventLoop {
                            "Input event {device_id:?}, {phase:?}, loc={location:?}, \
                             pointer={pointer:?}"
                        );
-
-                        let event = event::WindowEvent::Touch(event::Touch {
-                            device_id,
-                            phase,
-                            location,
-                            id: pointer.pointer_id() as u64,
-                            force: Some(Force::Normalized(pointer.pressure() as f64)),
-                        });
-
-                        app.window_event(self.window_target(), window_id, event);
+                        let event = event::Event::WindowEvent {
+                            window_id,
+                            event: event::WindowEvent::Touch(event::Touch {
+                                device_id,
+                                phase,
+                                location,
+                                id: pointer.pointer_id() as u64,
+                                force: Some(Force::Normalized(pointer.pressure() as f64)),
+                            }),
+                        };
+                        callback(event, self.window_target());
                    }
                }
            },
@@ -391,22 +446,23 @@ impl EventLoop {
                            &mut self.combining_accent,
                        );

-                        let window_id = window::WindowId(WindowId);
-                        let event = event::WindowEvent::KeyboardInput {
-                            device_id: event::DeviceId(DeviceId(key.device_id())),
-                            event: event::KeyEvent {
-                                state,
-                                physical_key: keycodes::to_physical_key(keycode),
-                                logical_key: keycodes::to_logical(key_char, keycode),
-                                location: keycodes::to_location(keycode),
-                                repeat: key.repeat_count() > 0,
-                                text: None,
-                                platform_specific: KeyEventExtra {},
+                        let event = event::Event::WindowEvent {
+                            window_id: window::WindowId(WindowId),
+                            event: event::WindowEvent::KeyboardInput {
+                                device_id: event::DeviceId(DeviceId(key.device_id())),
+                                event: event::KeyEvent {
+                                    state,
+                                    physical_key: keycodes::to_physical_key(keycode),
+                                    logical_key: keycodes::to_logical(key_char, keycode),
+                                    location: keycodes::to_location(keycode),
+                                    repeat: key.repeat_count() > 0,
+                                    text: None,
+                                    platform_specific: KeyEventExtra {},
+                                },
+                                is_synthetic: false,
                            },
-                            is_synthetic: false,
                        };
-
-                        app.window_event(self.window_target(), window_id, event);
+                        callback(event, self.window_target());
                    },
                }
            },
@@ -418,16 +474,19 @@ impl EventLoop {
        input_status
    }

-    pub fn run_app<A: ApplicationHandler>(mut self, app: &mut A) -> Result<(), EventLoopError> {
-        self.run_app_on_demand(app)
+    pub fn run<F>(mut self, event_handler: F) -> Result<(), EventLoopError>
+    where
+        F: FnMut(event::Event<T>, &event_loop::ActiveEventLoop),
+    {
+        self.run_on_demand(event_handler)
    }

-    pub fn run_app_on_demand<A: ApplicationHandler>(
-        &mut self,
-        app: &mut A,
-    ) -> Result<(), EventLoopError> {
+    pub fn run_on_demand<F>(&mut self, mut event_handler: F) -> Result<(), EventLoopError>
+    where
+        F: FnMut(event::Event<T>, &event_loop::ActiveEventLoop),
+    {
        loop {
-            match self.pump_app_events(None, app) {
+            match self.pump_events(None, &mut event_handler) {
                PumpStatus::Exit(0) => {
                    break Ok(());
                },
@@ -441,11 +500,10 @@ impl EventLoop {
        }
    }

-    pub fn pump_app_events<A: ApplicationHandler>(
-        &mut self,
-        timeout: Option<Duration>,
-        app: &mut A,
-    ) -> PumpStatus {
+    pub fn pump_events<F>(&mut self, timeout: Option<Duration>, mut callback: F) -> PumpStatus
+    where
+        F: FnMut(event::Event<T>, &RootAEL),
+    {
        if !self.loop_running {
            self.loop_running = true;

@@ -456,18 +514,18 @@ impl EventLoop {
            self.cause = StartCause::Init;

            // run the initial loop iteration
-            self.single_iteration(None, app);
+            self.single_iteration(None, &mut callback);
        }

        // Consider the possibility that the `StartCause::Init` iteration could
        // request to Exit
        if !self.exiting() {
-            self.poll_events_with_timeout(timeout, app);
+            self.poll_events_with_timeout(timeout, &mut callback);
        }
        if self.exiting() {
            self.loop_running = false;

-            app.exiting(self.window_target());
+            callback(event::Event::LoopExiting, self.window_target());

            PumpStatus::Exit(0)
        } else {
@@ -475,34 +533,32 @@ impl EventLoop {
        }
    }

-    fn poll_events_with_timeout<A: ApplicationHandler>(
-        &mut self,
-        mut timeout: Option<Duration>,
-        app: &mut A,
-    ) {
+    fn poll_events_with_timeout<F>(&mut self, mut timeout: Option<Duration>, mut callback: F)
+    where
+        F: FnMut(event::Event<T>, &RootAEL),
+    {
        let start = Instant::now();

        self.pending_redraw |= self.redraw_flag.get_and_reset();

-        timeout = if self.running
-            && (self.pending_redraw || self.proxy_wake_up.load(Ordering::Relaxed))
-        {
-            // If we already have work to do then we don't want to block on the next poll
-            Some(Duration::ZERO)
-        } else {
-            let control_flow_timeout = match self.control_flow() {
-                ControlFlow::Wait => None,
-                ControlFlow::Poll => Some(Duration::ZERO),
-                ControlFlow::WaitUntil(wait_deadline) => {
-                    Some(wait_deadline.saturating_duration_since(start))
-                },
+        timeout =
+            if self.running && (self.pending_redraw || self.user_events_receiver.has_incoming()) {
+                // If we already have work to do then we don't want to block on the next poll
+                Some(Duration::ZERO)
+            } else {
+                let control_flow_timeout = match self.control_flow() {
+                    ControlFlow::Wait => None,
+                    ControlFlow::Poll => Some(Duration::ZERO),
+                    ControlFlow::WaitUntil(wait_deadline) => {
+                        Some(wait_deadline.saturating_duration_since(start))
+                    },
+                };
+
+                min_timeout(control_flow_timeout, timeout)
            };

-            min_timeout(control_flow_timeout, timeout)
-        };
-
-        let android_app = self.android_app.clone(); // Don't borrow self as part of poll expression
-        android_app.poll_events(timeout, |poll_event| {
+        let app = self.android_app.clone(); // Don't borrow self as part of poll expression
+        app.poll_events(timeout, |poll_event| {
            let mut main_event = None;

            match poll_event {
@@ -517,7 +573,7 @@ impl EventLoop {
                    // We also ignore wake ups while suspended.
                    self.pending_redraw |= self.redraw_flag.get_and_reset();
                    if !self.running
-                        || (!self.pending_redraw && !self.proxy_wake_up.load(Ordering::Relaxed))
+                        || (!self.pending_redraw && !self.user_events_receiver.has_incoming())
                    {
                        return;
                    }
@@ -543,7 +599,7 @@ impl EventLoop {
                },
            };

-            self.single_iteration(main_event, app);
+            self.single_iteration(main_event, &mut callback);
        });
    }

@@ -551,9 +607,9 @@ impl EventLoop {
        &self.window_target
    }

-    pub fn create_proxy(&self) -> EventLoopProxy {
+    pub fn create_proxy(&self) -> EventLoopProxy<T> {
        EventLoopProxy {
-            proxy_wake_up: self.proxy_wake_up.clone(),
+            user_events_sender: self.user_events_sender.clone(),
            waker: self.android_app.create_waker(),
        }
    }
@@ -567,21 +623,30 @@ impl EventLoop {
    }
 }

-#[derive(Clone)]
-pub struct EventLoopProxy {
-    proxy_wake_up: Arc<AtomicBool>,
+pub struct EventLoopProxy<T: 'static> {
+    user_events_sender: mpsc::Sender<T>,
    waker: AndroidAppWaker,
 }

-impl EventLoopProxy {
-    pub fn wake_up(&self) {
-        self.proxy_wake_up.store(true, Ordering::Relaxed);
+impl<T: 'static> Clone for EventLoopProxy<T> {
+    fn clone(&self) -> Self {
+        EventLoopProxy {
+            user_events_sender: self.user_events_sender.clone(),
+            waker: self.waker.clone(),
+        }
+    }
+}
+
+impl<T> EventLoopProxy<T> {
+    pub fn send_event(&self, event: T) -> Result<(), event_loop::EventLoopClosed<T>> {
+        self.user_events_sender.send(event).map_err(|err| event_loop::EventLoopClosed(err.0))?;
        self.waker.wake();
+        Ok(())
    }
 }

 pub struct ActiveEventLoop {
-    app: AndroidApp,
+    pub(crate) app: AndroidApp,
    control_flow: Cell<ControlFlow>,
    exit: Cell<bool>,
    redraw_requester: RedrawRequester,
@@ -612,6 +677,11 @@ impl ActiveEventLoop {
        rwh_05::RawDisplayHandle::Android(rwh_05::AndroidDisplayHandle::empty())
    }

+    #[inline]
+    pub fn system_theme(&self) -> Option<Theme> {
+        None
+    }
+
    #[cfg(feature = "rwh_06")]
    #[inline]
    pub fn raw_display_handle_rwh_06(
@@ -838,7 +908,13 @@ impl Window {

    pub fn set_ime_cursor_area(&self, _position: Position, _size: Size) {}

-    pub fn set_ime_allowed(&self, _allowed: bool) {}
+    pub fn set_ime_allowed(&self, allowed: bool) {
+        if allowed {
+            self.app.show_soft_input(true);
+        } else {
+            self.app.hide_soft_input(true);
+        }
+    }

    pub fn set_ime_purpose(&self, _purpose: ImePurpose) {}

--- a/src/platform_impl/apple/appkit/window.rs
+++ b/src/platform_impl/apple/appkit/window.rs
@@ -1,5 +1,6 @@
 #![allow(clippy::unnecessary_cast)]

+use dpi::{Position, Size};
 use objc2::rc::{autoreleasepool, Retained};
 use objc2::{declare_class, mutability, ClassType, DeclaredClass};
 use objc2_app_kit::{NSResponder, NSWindow};
@@ -7,8 +8,12 @@ use objc2_foundation::{MainThreadBound, MainThreadMarker, NSObject};

 use super::event_loop::ActiveEventLoop;
 use super::window_delegate::WindowDelegate;
-use crate::error::OsError as RootOsError;
-use crate::window::WindowAttributes;
+use crate::error::RequestError;
+use crate::monitor::MonitorHandle as CoreMonitorHandle;
+use crate::window::{
+    Cursor, Fullscreen, Icon, ImePurpose, Theme, UserAttentionType, Window as CoreWindow,
+    WindowAttributes, WindowButtons, WindowId, WindowLevel,
+};

 pub(crate) struct Window {
    window: MainThreadBound<Retained<WinitWindow>>,
@@ -16,32 +21,20 @@ pub(crate) struct Window {
    delegate: MainThreadBound<Retained<WindowDelegate>>,
 }

-impl Drop for Window {
-    fn drop(&mut self) {
-        self.window.get_on_main(|window| autoreleasepool(|_| window.close()))
-    }
-}
-
 impl Window {
    pub(crate) fn new(
        window_target: &ActiveEventLoop,
        attributes: WindowAttributes,
-    ) -> Result<Self, RootOsError> {
+    ) -> Result<Self, RequestError> {
        let mtm = window_target.mtm;
-        let delegate = autoreleasepool(|_| {
-            WindowDelegate::new(window_target.app_delegate(), attributes, mtm)
-        })?;
+        let delegate =
+            autoreleasepool(|_| WindowDelegate::new(&window_target.app_state, attributes, mtm))?;
        Ok(Window {
            window: MainThreadBound::new(delegate.window().retain(), mtm),
            delegate: MainThreadBound::new(delegate, mtm),
        })
    }

-    pub(crate) fn maybe_queue_on_main(&self, f: impl FnOnce(&WindowDelegate) + Send + 'static) {
-        // For now, don't actually do queuing, since it may be less predictable
-        self.maybe_wait_on_main(f)
-    }
-
    pub(crate) fn maybe_wait_on_main<R: Send>(
        &self,
        f: impl FnOnce(&WindowDelegate) -> R + Send,
@@ -70,24 +63,274 @@ impl Window {
    }
 }

-#[derive(Debug, Copy, Clone, PartialEq, Eq, PartialOrd, Ord, Hash)]
-pub struct WindowId(pub usize);
+impl Drop for Window {
+    fn drop(&mut self) {
+        // Restore the video mode.
+        if matches!(self.fullscreen(), Some(Fullscreen::Exclusive(_))) {
+            self.set_fullscreen(None);
+        }

-impl WindowId {
-    pub const unsafe fn dummy() -> Self {
-        Self(0)
+        self.window.get_on_main(|window| autoreleasepool(|_| window.close()))
    }
 }

-impl From<WindowId> for u64 {
-    fn from(window_id: WindowId) -> Self {
-        window_id.0 as u64
+#[cfg(feature = "rwh_06")]
+impl rwh_06::HasDisplayHandle for Window {
+    fn display_handle(&self) -> Result<rwh_06::DisplayHandle<'_>, rwh_06::HandleError> {
+        let raw = self.raw_display_handle_rwh_06()?;
+        unsafe { Ok(rwh_06::DisplayHandle::borrow_raw(raw)) }
    }
 }

-impl From<u64> for WindowId {
-    fn from(raw_id: u64) -> Self {
-        Self(raw_id as usize)
+#[cfg(feature = "rwh_06")]
+impl rwh_06::HasWindowHandle for Window {
+    fn window_handle(&self) -> Result<rwh_06::WindowHandle<'_>, rwh_06::HandleError> {
+        let raw = self.raw_window_handle_rwh_06()?;
+        unsafe { Ok(rwh_06::WindowHandle::borrow_raw(raw)) }
+    }
+}
+
+impl CoreWindow for Window {
+    fn id(&self) -> crate::window::WindowId {
+        self.maybe_wait_on_main(|delegate| delegate.id())
+    }
+
+    fn scale_factor(&self) -> f64 {
+        self.maybe_wait_on_main(|delegate| delegate.scale_factor())
+    }
+
+    fn request_redraw(&self) {
+        self.maybe_wait_on_main(|delegate| delegate.request_redraw());
+    }
+
+    fn pre_present_notify(&self) {
+        self.maybe_wait_on_main(|delegate| delegate.pre_present_notify());
+    }
+
+    fn reset_dead_keys(&self) {
+        self.maybe_wait_on_main(|delegate| delegate.reset_dead_keys());
+    }
+
+    fn inner_position(&self) -> Result<dpi::PhysicalPosition<i32>, RequestError> {
+        Ok(self.maybe_wait_on_main(|delegate| delegate.inner_position()))
+    }
+
+    fn outer_position(&self) -> Result<dpi::PhysicalPosition<i32>, RequestError> {
+        Ok(self.maybe_wait_on_main(|delegate| delegate.outer_position()))
+    }
+
+    fn set_outer_position(&self, position: Position) {
+        self.maybe_wait_on_main(|delegate| delegate.set_outer_position(position));
+    }
+
+    fn surface_size(&self) -> dpi::PhysicalSize<u32> {
+        self.maybe_wait_on_main(|delegate| delegate.surface_size())
+    }
+
+    fn request_surface_size(&self, size: Size) -> Option<dpi::PhysicalSize<u32>> {
+        self.maybe_wait_on_main(|delegate| delegate.request_surface_size(size))
+    }
+
+    fn outer_size(&self) -> dpi::PhysicalSize<u32> {
+        self.maybe_wait_on_main(|delegate| delegate.outer_size())
+    }
+
+    fn set_min_surface_size(&self, min_size: Option<Size>) {
+        self.maybe_wait_on_main(|delegate| delegate.set_min_surface_size(min_size))
+    }
+
+    fn set_max_surface_size(&self, max_size: Option<Size>) {
+        self.maybe_wait_on_main(|delegate| delegate.set_max_surface_size(max_size));
+    }
+
+    fn surface_resize_increments(&self) -> Option<dpi::PhysicalSize<u32>> {
+        self.maybe_wait_on_main(|delegate| delegate.surface_resize_increments())
+    }
+
+    fn set_surface_resize_increments(&self, increments: Option<Size>) {
+        self.maybe_wait_on_main(|delegate| delegate.set_surface_resize_increments(increments));
+    }
+
+    fn set_title(&self, title: &str) {
+        self.maybe_wait_on_main(|delegate| delegate.set_title(title));
+    }
+
+    fn set_transparent(&self, transparent: bool) {
+        self.maybe_wait_on_main(|delegate| delegate.set_transparent(transparent));
+    }
+
+    fn set_blur(&self, blur: bool) {
+        self.maybe_wait_on_main(|delegate| delegate.set_blur(blur));
+    }
+
+    fn set_visible(&self, visible: bool) {
+        self.maybe_wait_on_main(|delegate| delegate.set_visible(visible));
+    }
+
+    fn is_visible(&self) -> Option<bool> {
+        self.maybe_wait_on_main(|delegate| delegate.is_visible())
+    }
+
+    fn set_resizable(&self, resizable: bool) {
+        self.maybe_wait_on_main(|delegate| delegate.set_resizable(resizable))
+    }
+
+    fn is_resizable(&self) -> bool {
+        self.maybe_wait_on_main(|delegate| delegate.is_resizable())
+    }
+
+    fn set_enabled_buttons(&self, buttons: WindowButtons) {
+        self.maybe_wait_on_main(|delegate| delegate.set_enabled_buttons(buttons))
+    }
+
+    fn enabled_buttons(&self) -> WindowButtons {
+        self.maybe_wait_on_main(|delegate| delegate.enabled_buttons())
+    }
+
+    fn set_minimized(&self, minimized: bool) {
+        self.maybe_wait_on_main(|delegate| delegate.set_minimized(minimized));
+    }
+
+    fn is_minimized(&self) -> Option<bool> {
+        self.maybe_wait_on_main(|delegate| delegate.is_minimized())
+    }
+
+    fn set_maximized(&self, maximized: bool) {
+        self.maybe_wait_on_main(|delegate| delegate.set_maximized(maximized));
+    }
+
+    fn is_maximized(&self) -> bool {
+        self.maybe_wait_on_main(|delegate| delegate.is_maximized())
+    }
+
+    fn set_fullscreen(&self, fullscreen: Option<Fullscreen>) {
+        self.maybe_wait_on_main(|delegate| delegate.set_fullscreen(fullscreen.map(Into::into)))
+    }
+
+    fn fullscreen(&self) -> Option<Fullscreen> {
+        self.maybe_wait_on_main(|delegate| delegate.fullscreen().map(Into::into))
+    }
+
+    fn set_decorations(&self, decorations: bool) {
+        self.maybe_wait_on_main(|delegate| delegate.set_decorations(decorations));
+    }
+
+    fn is_decorated(&self) -> bool {
+        self.maybe_wait_on_main(|delegate| delegate.is_decorated())
+    }
+
+    fn set_window_level(&self, level: WindowLevel) {
+        self.maybe_wait_on_main(|delegate| delegate.set_window_level(level));
+    }
+
+    fn set_window_icon(&self, window_icon: Option<Icon>) {
+        self.maybe_wait_on_main(|delegate| delegate.set_window_icon(window_icon));
+    }
+
+    fn set_ime_cursor_area(&self, position: Position, size: Size) {
+        self.maybe_wait_on_main(|delegate| delegate.set_ime_cursor_area(position, size));
+    }
+
+    fn set_ime_allowed(&self, allowed: bool) {
+        self.maybe_wait_on_main(|delegate| delegate.set_ime_allowed(allowed));
+    }
+
+    fn set_ime_purpose(&self, purpose: ImePurpose) {
+        self.maybe_wait_on_main(|delegate| delegate.set_ime_purpose(purpose));
+    }
+
+    fn focus_window(&self) {
+        self.maybe_wait_on_main(|delegate| delegate.focus_window());
+    }
+
+    fn has_focus(&self) -> bool {
+        self.maybe_wait_on_main(|delegate| delegate.has_focus())
+    }
+
+    fn request_user_attention(&self, request_type: Option<UserAttentionType>) {
+        self.maybe_wait_on_main(|delegate| delegate.request_user_attention(request_type));
+    }
+
+    fn set_theme(&self, theme: Option<Theme>) {
+        self.maybe_wait_on_main(|delegate| delegate.set_theme(theme));
+    }
+
+    fn theme(&self) -> Option<Theme> {
+        self.maybe_wait_on_main(|delegate| delegate.theme())
+    }
+
+    fn set_content_protected(&self, protected: bool) {
+        self.maybe_wait_on_main(|delegate| delegate.set_content_protected(protected));
+    }
+
+    fn title(&self) -> String {
+        self.maybe_wait_on_main(|delegate| delegate.title())
+    }
+
+    fn set_cursor(&self, cursor: Cursor) {
+        self.maybe_wait_on_main(|delegate| delegate.set_cursor(cursor));
+    }
+
+    fn set_cursor_position(&self, position: Position) -> Result<(), RequestError> {
+        self.maybe_wait_on_main(|delegate| delegate.set_cursor_position(position))
+    }
+
+    fn set_cursor_grab(&self, mode: crate::window::CursorGrabMode) -> Result<(), RequestError> {
+        self.maybe_wait_on_main(|delegate| delegate.set_cursor_grab(mode))
+    }
+
+    fn set_cursor_visible(&self, visible: bool) {
+        self.maybe_wait_on_main(|delegate| delegate.set_cursor_visible(visible))
+    }
+
+    fn drag_window(&self) -> Result<(), RequestError> {
+        self.maybe_wait_on_main(|delegate| delegate.drag_window())
+    }
+
+    fn drag_resize_window(
+        &self,
+        direction: crate::window::ResizeDirection,
+    ) -> Result<(), RequestError> {
+        Ok(self.maybe_wait_on_main(|delegate| delegate.drag_resize_window(direction))?)
+    }
+
+    fn show_window_menu(&self, position: Position) {
+        self.maybe_wait_on_main(|delegate| delegate.show_window_menu(position))
+    }
+
+    fn set_cursor_hittest(&self, hittest: bool) -> Result<(), RequestError> {
+        self.maybe_wait_on_main(|delegate| delegate.set_cursor_hittest(hittest));
+        Ok(())
+    }
+
+    fn current_monitor(&self) -> Option<CoreMonitorHandle> {
+        self.maybe_wait_on_main(|delegate| {
+            delegate.current_monitor().map(|inner| CoreMonitorHandle { inner })
+        })
+    }
+
+    fn available_monitors(&self) -> Box<dyn Iterator<Item = CoreMonitorHandle>> {
+        self.maybe_wait_on_main(|delegate| {
+            Box::new(
+                delegate.available_monitors().into_iter().map(|inner| CoreMonitorHandle { inner }),
+            )
+        })
+    }
+
+    fn primary_monitor(&self) -> Option<CoreMonitorHandle> {
+        self.maybe_wait_on_main(|delegate| {
+            delegate.primary_monitor().map(|inner| CoreMonitorHandle { inner })
+        })
+    }
+
+    #[cfg(feature = "rwh_06")]
+    fn rwh_06_display_handle(&self) -> &dyn rwh_06::HasDisplayHandle {
+        self
+    }
+
+    #[cfg(feature = "rwh_06")]
+    fn rwh_06_window_handle(&self) -> &dyn rwh_06::HasWindowHandle {
+        self
    }
 }

@@ -121,6 +364,6 @@ declare_class!(

 impl WinitWindow {
    pub(super) fn id(&self) -> WindowId {
-        WindowId(self as *const Self as usize)
+        WindowId::from_raw(self as *const Self as usize)
    }
 }
--- a/src/platform_impl/apple/mod.rs
+++ b/src/platform_impl/apple/mod.rs
@@ -1,11 +0,0 @@
-//! Apple/Darwin-specific implementations
-
-#[cfg(target_os = "macos")]
-mod appkit;
-#[cfg(not(target_os = "macos"))]
-mod uikit;
-
-#[cfg(target_os = "macos")]
-pub use self::appkit::*;
-#[cfg(not(target_os = "macos"))]
-pub use self::uikit::*;
--- a/src/platform_impl/apple/uikit/app_delegate.rs
+++ b/src/platform_impl/apple/uikit/app_delegate.rs
--- a/src/platform_impl/apple/uikit/app_state.rs
+++ b/src/platform_impl/apple/uikit/app_state.rs
@@ -10,7 +10,7 @@ use std::{fmt, mem, ptr};
 use core_foundation::base::CFRelease;
 use core_foundation::date::CFAbsoluteTimeGetCurrent;
 use core_foundation::runloop::{
-    kCFRunLoopDefaultMode, CFRunLoopAddTimer, CFRunLoopGetMain, CFRunLoopRef, CFRunLoopTimerCreate,
+    kCFRunLoopCommonModes, CFRunLoopAddTimer, CFRunLoopGetMain, CFRunLoopRef, CFRunLoopTimerCreate,
    CFRunLoopTimerInvalidate, CFRunLoopTimerRef, CFRunLoopTimerSetNextFireDate,
 };
 use objc2::rc::Retained;
@@ -40,9 +40,12 @@ macro_rules! bug_assert {
    };
 }

+#[derive(Debug)]
+pub(crate) struct HandlePendingUserEvents;
+
 pub(crate) struct EventLoopHandler {
    #[allow(clippy::type_complexity)]
-    pub(crate) handler: Box<dyn FnMut(Event, &RootActiveEventLoop)>,
+    pub(crate) handler: Box<dyn FnMut(Event<HandlePendingUserEvents>, &RootActiveEventLoop)>,
    pub(crate) event_loop: RootActiveEventLoop,
 }

@@ -56,14 +59,14 @@ impl fmt::Debug for EventLoopHandler {
 }

 impl EventLoopHandler {
-    fn handle_event(&mut self, event: Event) {
+    fn handle_event(&mut self, event: Event<HandlePendingUserEvents>) {
        (self.handler)(event, &self.event_loop)
    }
 }

 #[derive(Debug)]
 pub(crate) enum EventWrapper {
-    StaticEvent(Event),
+    StaticEvent(Event<HandlePendingUserEvents>),
    ScaleFactorChanged(ScaleFactorChanged),
 }

@@ -85,7 +88,7 @@ enum UserCallbackTransitionResult<'a> {
    },
 }

-impl Event {
+impl Event<HandlePendingUserEvents> {
    fn is_redraw(&self) -> bool {
        matches!(self, Event::WindowEvent { event: WindowEvent::RedrawRequested, .. })
    }
@@ -144,6 +147,8 @@ impl AppState {
        // must be mut because plain `static` requires `Sync`
        static mut APP_STATE: RefCell<Option<AppState>> = RefCell::new(None);

+        #[allow(unknown_lints)] // New lint below
+        #[allow(static_mut_refs)] // TODO: Use `MainThreadBound` instead.
        let mut guard = unsafe { APP_STATE.borrow_mut() };
        if guard.is_none() {
            #[inline(never)]
@@ -622,7 +627,7 @@ fn handle_user_events(mtm: MainThreadMarker) {
    }
    drop(this);

-    handler.handle_event(Event::UserWakeUp);
+    handler.handle_event(Event::UserEvent(HandlePendingUserEvents));

    loop {
        let mut this = AppState::get_mut(mtm);
@@ -655,7 +660,7 @@ fn handle_user_events(mtm: MainThreadMarker) {
            }
        }

-        handler.handle_event(Event::UserWakeUp);
+        handler.handle_event(Event::UserEvent(HandlePendingUserEvents));
    }
 }

@@ -802,7 +807,7 @@ impl EventLoopWaker {
                wakeup_main_loop,
                ptr::null_mut(),
            );
-            CFRunLoopAddTimer(rl, timer, kCFRunLoopDefaultMode);
+            CFRunLoopAddTimer(rl, timer, kCFRunLoopCommonModes);

            EventLoopWaker { timer }
        }
--- a/src/platform_impl/apple/uikit/event_loop.rs
+++ b/src/platform_impl/apple/uikit/event_loop.rs
@@ -2,27 +2,28 @@ use std::collections::VecDeque;
 use std::ffi::{c_char, c_int, c_void};
 use std::marker::PhantomData;
 use std::ptr::{self, NonNull};
-use std::sync::atomic::{AtomicBool, Ordering as AtomicOrdering};
-use std::sync::Arc;
+use std::sync::mpsc::{self, Receiver, Sender};

 use core_foundation::base::{CFIndex, CFRelease};
 use core_foundation::runloop::{
-    kCFRunLoopAfterWaiting, kCFRunLoopBeforeWaiting, kCFRunLoopDefaultMode, kCFRunLoopExit,
-    CFRunLoopActivity, CFRunLoopAddObserver, CFRunLoopAddSource, CFRunLoopGetMain,
+    kCFRunLoopAfterWaiting, kCFRunLoopBeforeWaiting, kCFRunLoopCommonModes, kCFRunLoopDefaultMode,
+    kCFRunLoopExit, CFRunLoopActivity, CFRunLoopAddObserver, CFRunLoopAddSource, CFRunLoopGetMain,
    CFRunLoopObserverCreate, CFRunLoopObserverRef, CFRunLoopSourceContext, CFRunLoopSourceCreate,
    CFRunLoopSourceInvalidate, CFRunLoopSourceRef, CFRunLoopSourceSignal, CFRunLoopWakeUp,
 };
 use objc2::rc::Retained;
 use objc2::{msg_send_id, ClassType};
 use objc2_foundation::{MainThreadMarker, NSString};
-use objc2_ui_kit::{UIApplication, UIApplicationMain, UIScreen};
+use objc2_ui_kit::{UIApplication, UIApplicationMain, UIDevice, UIScreen, UIUserInterfaceIdiom};

-use super::app_state::EventLoopHandler;
-use crate::application::ApplicationHandler;
 use crate::error::EventLoopError;
 use crate::event::Event;
-use crate::event_loop::{ActiveEventLoop as RootActiveEventLoop, ControlFlow, DeviceEvents};
-use crate::window::{CustomCursor, CustomCursorSource};
+use crate::event_loop::{
+    ActiveEventLoop as RootActiveEventLoop, ControlFlow, DeviceEvents, EventLoopClosed,
+};
+use crate::platform::ios::Idiom;
+use crate::platform_impl::ios::app_state::{EventLoopHandler, HandlePendingUserEvents};
+use crate::window::{CustomCursor, CustomCursorSource, Theme};

 use super::app_delegate::AppDelegate;
 use super::app_state::AppState;
@@ -57,6 +58,11 @@ impl ActiveEventLoop {
        rwh_05::RawDisplayHandle::UiKit(rwh_05::UiKitDisplayHandle::empty())
    }

+    #[inline]
+    pub fn system_theme(&self) -> Option<Theme> {
+        None
+    }
+
    #[cfg(feature = "rwh_06")]
    #[inline]
    pub fn raw_display_handle_rwh_06(
@@ -107,44 +113,34 @@ impl OwnedDisplayHandle {
    }
 }

-fn map_user_event<A: ApplicationHandler>(
-    app: &mut A,
-    proxy_wake_up: Arc<AtomicBool>,
-) -> impl FnMut(Event, &RootActiveEventLoop) + '_ {
-    move |event, window_target| match event {
-        Event::NewEvents(cause) => app.new_events(window_target, cause),
-        Event::WindowEvent { window_id, event } => {
-            app.window_event(window_target, window_id, event)
-        },
-        Event::DeviceEvent { device_id, event } => {
-            app.device_event(window_target, device_id, event)
-        },
-        Event::UserWakeUp => {
-            if proxy_wake_up.swap(false, AtomicOrdering::Relaxed) {
-                app.proxy_wake_up(window_target);
+fn map_user_event<T: 'static>(
+    mut handler: impl FnMut(Event<T>, &RootActiveEventLoop),
+    receiver: mpsc::Receiver<T>,
+) -> impl FnMut(Event<HandlePendingUserEvents>, &RootActiveEventLoop) {
+    move |event, window_target| match event.map_nonuser_event() {
+        Ok(event) => (handler)(event, window_target),
+        Err(_) => {
+            for event in receiver.try_iter() {
+                (handler)(Event::UserEvent(event), window_target);
            }
        },
-        Event::Suspended => app.suspended(window_target),
-        Event::Resumed => app.resumed(window_target),
-        Event::AboutToWait => app.about_to_wait(window_target),
-        Event::LoopExiting => app.exiting(window_target),
-        Event::MemoryWarning => app.memory_warning(window_target),
    }
 }

-pub struct EventLoop {
+pub struct EventLoop<T: 'static> {
    mtm: MainThreadMarker,
-    proxy_wake_up: Arc<AtomicBool>,
+    sender: Sender<T>,
+    receiver: Receiver<T>,
    window_target: RootActiveEventLoop,
 }

 #[derive(Default, Debug, Copy, Clone, PartialEq, Eq, Hash)]
 pub(crate) struct PlatformSpecificEventLoopAttributes {}

-impl EventLoop {
+impl<T: 'static> EventLoop<T> {
    pub(crate) fn new(
        _: &PlatformSpecificEventLoopAttributes,
-    ) -> Result<EventLoop, EventLoopError> {
+    ) -> Result<EventLoop<T>, EventLoopError> {
        let mtm = MainThreadMarker::new()
            .expect("On iOS, `EventLoop` must be created on the main thread");

@@ -157,19 +153,23 @@ impl EventLoop {
            SINGLETON_INIT = true;
        }

+        let (sender, receiver) = mpsc::channel();
+
        // this line sets up the main run loop before `UIApplicationMain`
        setup_control_flow_observers();

-        let proxy_wake_up = Arc::new(AtomicBool::new(false));
-
        Ok(EventLoop {
            mtm,
-            proxy_wake_up,
+            sender,
+            receiver,
            window_target: RootActiveEventLoop { p: ActiveEventLoop { mtm }, _marker: PhantomData },
        })
    }

-    pub fn run_app<A: ApplicationHandler>(self, app: &mut A) -> ! {
+    pub fn run<F>(self, handler: F) -> !
+    where
+        F: FnMut(Event<T>, &RootActiveEventLoop),
+    {
        let application: Option<Retained<UIApplication>> =
            unsafe { msg_send_id![UIApplication::class(), sharedApplication] };
        assert!(
@@ -179,12 +179,12 @@ impl EventLoop {
             `EventLoop::run_app` calls `UIApplicationMain` on iOS",
        );

-        let handler = map_user_event(app, self.proxy_wake_up.clone());
+        let handler = map_user_event(handler, self.receiver);

        let handler = unsafe {
            std::mem::transmute::<
-                Box<dyn FnMut(Event, &RootActiveEventLoop)>,
-                Box<dyn FnMut(Event, &RootActiveEventLoop)>,
+                Box<dyn FnMut(Event<HandlePendingUserEvents>, &RootActiveEventLoop)>,
+                Box<dyn FnMut(Event<HandlePendingUserEvents>, &RootActiveEventLoop)>,
            >(Box::new(handler))
        };

@@ -212,8 +212,8 @@ impl EventLoop {
        unreachable!()
    }

-    pub fn create_proxy(&self) -> EventLoopProxy {
-        EventLoopProxy::new(self.proxy_wake_up.clone())
+    pub fn create_proxy(&self) -> EventLoopProxy<T> {
+        EventLoopProxy::new(self.sender.clone())
    }

    pub fn window_target(&self) -> &RootActiveEventLoop {
@@ -221,21 +221,35 @@ impl EventLoop {
    }
 }

-pub struct EventLoopProxy {
-    proxy_wake_up: Arc<AtomicBool>,
-    source: CFRunLoopSourceRef,
-}
-
-unsafe impl Send for EventLoopProxy {}
-unsafe impl Sync for EventLoopProxy {}
-
-impl Clone for EventLoopProxy {
-    fn clone(&self) -> EventLoopProxy {
-        EventLoopProxy::new(self.proxy_wake_up.clone())
+// EventLoopExtIOS
+impl<T: 'static> EventLoop<T> {
+    pub fn idiom(&self) -> Idiom {
+        match UIDevice::currentDevice(self.mtm).userInterfaceIdiom() {
+            UIUserInterfaceIdiom::Unspecified => Idiom::Unspecified,
+            UIUserInterfaceIdiom::Phone => Idiom::Phone,
+            UIUserInterfaceIdiom::Pad => Idiom::Pad,
+            UIUserInterfaceIdiom::TV => Idiom::TV,
+            UIUserInterfaceIdiom::CarPlay => Idiom::CarPlay,
+            _ => Idiom::Unspecified,
+        }
    }
 }

-impl Drop for EventLoopProxy {
+pub struct EventLoopProxy<T> {
+    sender: Sender<T>,
+    source: CFRunLoopSourceRef,
+}
+
+unsafe impl<T: Send> Send for EventLoopProxy<T> {}
+unsafe impl<T: Send> Sync for EventLoopProxy<T> {}
+
+impl<T> Clone for EventLoopProxy<T> {
+    fn clone(&self) -> EventLoopProxy<T> {
+        EventLoopProxy::new(self.sender.clone())
+    }
+}
+
+impl<T> Drop for EventLoopProxy<T> {
    fn drop(&mut self) {
        unsafe {
            CFRunLoopSourceInvalidate(self.source);
@@ -244,8 +258,8 @@ impl Drop for EventLoopProxy {
    }
 }

-impl EventLoopProxy {
-    fn new(proxy_wake_up: Arc<AtomicBool>) -> EventLoopProxy {
+impl<T> EventLoopProxy<T> {
+    fn new(sender: Sender<T>) -> EventLoopProxy<T> {
        unsafe {
            // just wake up the eventloop
            extern "C" fn event_loop_proxy_handler(_: *const c_void) {}
@@ -266,21 +280,22 @@ impl EventLoopProxy {
                perform: event_loop_proxy_handler,
            };
            let source = CFRunLoopSourceCreate(ptr::null_mut(), CFIndex::MAX - 1, &mut context);
-            CFRunLoopAddSource(rl, source, kCFRunLoopDefaultMode);
+            CFRunLoopAddSource(rl, source, kCFRunLoopCommonModes);
            CFRunLoopWakeUp(rl);

-            EventLoopProxy { proxy_wake_up, source }
+            EventLoopProxy { sender, source }
        }
    }

-    pub fn wake_up(&self) {
-        self.proxy_wake_up.store(true, AtomicOrdering::Relaxed);
+    pub fn send_event(&self, event: T) -> Result<(), EventLoopClosed<T>> {
+        self.sender.send(event).map_err(|::std::sync::mpsc::SendError(x)| EventLoopClosed(x))?;
        unsafe {
            // let the main thread know there's a new event
            CFRunLoopSourceSignal(self.source);
            let rl = CFRunLoopGetMain();
            CFRunLoopWakeUp(rl);
        }
+        Ok(())
    }
 }

--- a/src/platform_impl/apple/uikit/mod.rs
+++ b/src/platform_impl/apple/uikit/mod.rs
@@ -32,7 +32,7 @@ pub(crate) use crate::platform_impl::Fullscreen;
 pub struct DeviceId;

 impl DeviceId {
-    pub const unsafe fn dummy() -> Self {
+    pub const fn dummy() -> Self {
        DeviceId
    }
 }
--- a/src/platform_impl/apple/uikit/monitor.rs
+++ b/src/platform_impl/apple/uikit/monitor.rs
@@ -9,9 +9,9 @@ use objc2::Message;
 use objc2_foundation::{run_on_main, MainThreadBound, MainThreadMarker, NSInteger};
 use objc2_ui_kit::{UIScreen, UIScreenMode};

-use super::app_state;
 use crate::dpi::{PhysicalPosition, PhysicalSize};
 use crate::monitor::VideoModeHandle as RootVideoModeHandle;
+use crate::platform_impl::platform::app_state;

 // Workaround for `MainThreadBound` implementing almost no traits
 #[derive(Debug)]
@@ -102,13 +102,20 @@ impl Clone for MonitorHandle {

 impl hash::Hash for MonitorHandle {
    fn hash<H: hash::Hasher>(&self, state: &mut H) {
-        (self as *const Self).hash(state);
+        // SAFETY: Only getting the pointer.
+        let mtm = unsafe { MainThreadMarker::new_unchecked() };
+        Retained::as_ptr(self.ui_screen.get(mtm)).hash(state);
    }
 }

 impl PartialEq for MonitorHandle {
    fn eq(&self, other: &Self) -> bool {
-        ptr::eq(self, other)
+        // SAFETY: Only getting the pointer.
+        let mtm = unsafe { MainThreadMarker::new_unchecked() };
+        ptr::eq(
+            Retained::as_ptr(self.ui_screen.get(mtm)),
+            Retained::as_ptr(other.ui_screen.get(mtm)),
+        )
    }
 }

@@ -122,8 +129,10 @@ impl PartialOrd for MonitorHandle {

 impl Ord for MonitorHandle {
    fn cmp(&self, other: &Self) -> std::cmp::Ordering {
+        // SAFETY: Only getting the pointer.
        // TODO: Make a better ordering
-        (self as *const Self).cmp(&(other as *const Self))
+        let mtm = unsafe { MainThreadMarker::new_unchecked() };
+        Retained::as_ptr(self.ui_screen.get(mtm)).cmp(&Retained::as_ptr(other.ui_screen.get(mtm)))
    }
 }

@@ -242,3 +251,27 @@ pub fn uiscreens(mtm: MainThreadMarker) -> VecDeque<MonitorHandle> {
    #[allow(deprecated)]
    UIScreen::screens(mtm).into_iter().map(MonitorHandle::new).collect()
 }
+
+#[cfg(test)]
+mod tests {
+    use objc2_foundation::NSSet;
+
+    use super::*;
+
+    // Test that UIScreen pointer comparisons are correct.
+    #[test]
+    #[allow(deprecated)]
+    fn screen_comparisons() {
+        // Test code, doesn't matter that it's not thread safe
+        let mtm = unsafe { MainThreadMarker::new_unchecked() };
+
+        assert!(ptr::eq(&*UIScreen::mainScreen(mtm), &*UIScreen::mainScreen(mtm)));
+
+        let main = UIScreen::mainScreen(mtm);
+        assert!(UIScreen::screens(mtm).iter().any(|screen| ptr::eq(screen, &*main)));
+
+        assert!(unsafe {
+            NSSet::setWithArray(&UIScreen::screens(mtm)).containsObject(&UIScreen::mainScreen(mtm))
+        });
+    }
+}
--- a/src/platform_impl/apple/uikit/view.rs
+++ b/src/platform_impl/apple/uikit/view.rs
@@ -4,19 +4,21 @@ use std::cell::{Cell, RefCell};
 use objc2::rc::Retained;
 use objc2::runtime::{NSObjectProtocol, ProtocolObject};
 use objc2::{declare_class, msg_send, msg_send_id, mutability, sel, ClassType, DeclaredClass};
-use objc2_foundation::{CGFloat, CGPoint, CGRect, MainThreadMarker, NSObject, NSSet};
+use objc2_foundation::{CGFloat, CGPoint, CGRect, MainThreadMarker, NSObject, NSSet, NSString};
 use objc2_ui_kit::{
    UICoordinateSpace, UIEvent, UIForceTouchCapability, UIGestureRecognizer,
-    UIGestureRecognizerDelegate, UIGestureRecognizerState, UIPanGestureRecognizer,
+    UIGestureRecognizerDelegate, UIGestureRecognizerState, UIKeyInput, UIPanGestureRecognizer,
    UIPinchGestureRecognizer, UIResponder, UIRotationGestureRecognizer, UITapGestureRecognizer,
-    UITouch, UITouchPhase, UITouchType, UITraitEnvironment, UIView,
+    UITextInputTraits, UITouch, UITouchPhase, UITouchType, UITraitEnvironment, UIView,
 };

 use super::app_state::{self, EventWrapper};
 use super::window::WinitUIWindow;
-use super::DEVICE_ID;
 use crate::dpi::PhysicalPosition;
-use crate::event::{Event, Force, Touch, TouchPhase, WindowEvent};
+use crate::event::{ElementState, Event, Force, KeyEvent, Touch, TouchPhase, WindowEvent};
+use crate::keyboard::{Key, KeyCode, KeyLocation, NamedKey, NativeKeyCode, PhysicalKey};
+use crate::platform_impl::platform::DEVICE_ID;
+use crate::platform_impl::KeyEventExtra;
 use crate::window::{WindowAttributes, WindowId as RootWindowId};

 pub struct WinitViewState {
@@ -314,6 +316,11 @@ declare_class!(
            let mtm = MainThreadMarker::new().unwrap();
            app_state::handle_nonuser_event(mtm, gesture_event);
        }
+
+        #[method(canBecomeFirstResponder)]
+        fn can_become_first_responder(&self) -> bool {
+            true
+        }
    }

    unsafe impl NSObjectProtocol for WinitView {}
@@ -324,6 +331,26 @@ declare_class!(
            true
        }
    }
+
+    unsafe impl UITextInputTraits for WinitView {
+    }
+
+    unsafe impl UIKeyInput for WinitView {
+        #[method(hasText)]
+        fn has_text(&self) -> bool {
+            true
+        }
+
+        #[method(insertText:)]
+        fn insert_text(&self, text: &NSString) {
+            self.handle_insert_text(text)
+        }
+
+        #[method(deleteBackward)]
+        fn delete_backward(&self) {
+            self.handle_delete_backward()
+        }
+    }
 );

 impl WinitView {
@@ -512,4 +539,69 @@ impl WinitView {
        let mtm = MainThreadMarker::new().unwrap();
        app_state::handle_nonuser_events(mtm, touch_events);
    }
+
+    fn handle_insert_text(&self, text: &NSString) {
+        let window = self.window().unwrap();
+        let window_id = RootWindowId(window.id());
+        let mtm = MainThreadMarker::new().unwrap();
+        // send individual events for each character
+        app_state::handle_nonuser_events(
+            mtm,
+            text.to_string().chars().flat_map(|c| {
+                let text = smol_str::SmolStr::from_iter([c]);
+                // Emit both press and release events
+                [ElementState::Pressed, ElementState::Released].map(|state| {
+                    EventWrapper::StaticEvent(Event::WindowEvent {
+                        window_id,
+                        event: WindowEvent::KeyboardInput {
+                            event: KeyEvent {
+                                text: if state == ElementState::Pressed {
+                                    Some(text.clone())
+                                } else {
+                                    None
+                                },
+                                state,
+                                location: KeyLocation::Standard,
+                                repeat: false,
+                                logical_key: Key::Character(text.clone()),
+                                physical_key: PhysicalKey::Unidentified(
+                                    NativeKeyCode::Unidentified,
+                                ),
+                                platform_specific: KeyEventExtra {},
+                            },
+                            is_synthetic: false,
+                            device_id: DEVICE_ID,
+                        },
+                    })
+                })
+            }),
+        );
+    }
+
+    fn handle_delete_backward(&self) {
+        let window = self.window().unwrap();
+        let window_id = RootWindowId(window.id());
+        let mtm = MainThreadMarker::new().unwrap();
+        app_state::handle_nonuser_events(
+            mtm,
+            [ElementState::Pressed, ElementState::Released].map(|state| {
+                EventWrapper::StaticEvent(Event::WindowEvent {
+                    window_id,
+                    event: WindowEvent::KeyboardInput {
+                        device_id: DEVICE_ID,
+                        event: KeyEvent {
+                            state,
+                            logical_key: Key::Named(NamedKey::Backspace),
+                            physical_key: PhysicalKey::Code(KeyCode::Backspace),
+                            platform_specific: KeyEventExtra {},
+                            repeat: false,
+                            location: KeyLocation::Standard,
+                            text: None,
+                        },
+                        is_synthetic: false,
+                    },
+                })
+            }),
+        );
+    }
 }
--- a/src/platform_impl/apple/uikit/view_controller.rs
+++ b/src/platform_impl/apple/uikit/view_controller.rs
--- a/src/platform_impl/apple/uikit/window.rs
+++ b/src/platform_impl/apple/uikit/window.rs
@@ -17,13 +17,15 @@ use tracing::{debug, warn};
 use super::app_state::EventWrapper;
 use super::view::WinitView;
 use super::view_controller::WinitViewController;
-use super::{app_state, monitor, ActiveEventLoop, Fullscreen, MonitorHandle};
 use crate::cursor::Cursor;
 use crate::dpi::{LogicalPosition, LogicalSize, PhysicalPosition, PhysicalSize, Position, Size};
 use crate::error::{ExternalError, NotSupportedError, OsError as RootOsError};
 use crate::event::{Event, WindowEvent};
 use crate::icon::Icon;
 use crate::platform::ios::{ScreenEdge, StatusBarStyle, ValidOrientations};
+use crate::platform_impl::platform::{
+    app_state, monitor, ActiveEventLoop, Fullscreen, MonitorHandle,
+};
 use crate::window::{
    CursorGrabMode, ImePurpose, ResizeDirection, Theme, UserAttentionType, WindowAttributes,
    WindowButtons, WindowId as RootWindowId, WindowLevel,
@@ -365,12 +367,24 @@ impl Inner {
        warn!("`Window::set_ime_cursor_area` is ignored on iOS")
    }

-    pub fn set_ime_allowed(&self, _allowed: bool) {
-        warn!("`Window::set_ime_allowed` is ignored on iOS")
+    /// Show / hide the keyboard. To show the keyboard, we call `becomeFirstResponder`,
+    /// requesting focus for the [WinitView]. Since [WinitView] implements
+    /// [objc2_ui_kit::UIKeyInput], the keyboard will be shown.
+    /// <https://developer.apple.com/documentation/uikit/uiresponder/1621113-becomefirstresponder>
+    pub fn set_ime_allowed(&self, allowed: bool) {
+        if allowed {
+            unsafe {
+                self.view.becomeFirstResponder();
+            }
+        } else {
+            unsafe {
+                self.view.resignFirstResponder();
+            }
+        }
    }

    pub fn set_ime_purpose(&self, _purpose: ImePurpose) {
-        warn!("`Window::set_ime_allowed` is ignored on iOS")
+        warn!("`Window::set_ime_purpose` is ignored on iOS")
    }

    pub fn focus_window(&self) {
@@ -699,7 +713,7 @@ pub struct WindowId {
 }

 impl WindowId {
-    pub const unsafe fn dummy() -> Self {
+    pub const fn dummy() -> Self {
        WindowId { window: std::ptr::null_mut() }
    }
 }
--- a/src/platform_impl/linux/common/xkb/mod.rs
+++ b/src/platform_impl/linux/common/xkb/mod.rs
@@ -184,7 +184,7 @@ pub struct KeyContext<'a> {
    scratch_buffer: &'a mut Vec<u8>,
 }

-impl<'a> KeyContext<'a> {
+impl KeyContext<'_> {
    pub fn process_key_event(
        &mut self,
        keycode: u32,
--- a/src/platform_impl/linux/mod.rs
+++ b/src/platform_impl/linux/mod.rs
@@ -11,8 +11,6 @@ use std::{env, fmt};
 #[cfg(x11_platform)]
 use std::{ffi::CStr, mem::MaybeUninit, os::raw::*, sync::Mutex};

-use crate::application::ApplicationHandler;
-use crate::platform::pump_events::PumpStatus;
 #[cfg(x11_platform)]
 use crate::utils::Lazy;
 use smol_str::SmolStr;
@@ -21,9 +19,12 @@ use smol_str::SmolStr;
 use self::x11::{X11Error, XConnection, XError, XNotSupported};
 use crate::dpi::{PhysicalPosition, PhysicalSize, Position, Size};
 use crate::error::{EventLoopError, ExternalError, NotSupportedError, OsError as RootOsError};
-use crate::event_loop::{AsyncRequestSerial, ControlFlow, DeviceEvents};
+use crate::event_loop::{
+    ActiveEventLoop as RootELW, AsyncRequestSerial, ControlFlow, DeviceEvents, EventLoopClosed,
+};
 use crate::icon::Icon;
 use crate::keyboard::Key;
+use crate::platform::pump_events::PumpStatus;
 #[cfg(x11_platform)]
 use crate::platform::x11::{WindowType as XWindowType, XlibErrorHook};
 use crate::window::{
@@ -116,6 +117,8 @@ pub(crate) static X11_BACKEND: Lazy<Mutex<Result<Arc<XConnection>, XNotSupported
 pub enum OsError {
    Misc(&'static str),
    #[cfg(x11_platform)]
+    XNotSupported(XNotSupported),
+    #[cfg(x11_platform)]
    XError(Arc<X11Error>),
    #[cfg(wayland_platform)]
    WaylandError(Arc<wayland::WaylandError>),
@@ -126,6 +129,8 @@ impl fmt::Display for OsError {
        match *self {
            OsError::Misc(e) => _f.pad(e),
            #[cfg(x11_platform)]
+            OsError::XNotSupported(ref e) => fmt::Display::fmt(e, _f),
+            #[cfg(x11_platform)]
            OsError::XError(ref e) => fmt::Display::fmt(e, _f),
            #[cfg(wayland_platform)]
            OsError::WaylandError(ref e) => fmt::Display::fmt(e, _f),
@@ -156,7 +161,7 @@ impl From<u64> for WindowId {
 }

 impl WindowId {
-    pub const unsafe fn dummy() -> Self {
+    pub const fn dummy() -> Self {
        Self(0)
    }
 }
@@ -170,11 +175,11 @@ pub enum DeviceId {
 }

 impl DeviceId {
-    pub const unsafe fn dummy() -> Self {
+    pub const fn dummy() -> Self {
        #[cfg(wayland_platform)]
-        return DeviceId::Wayland(unsafe { wayland::DeviceId::dummy() });
+        return DeviceId::Wayland(wayland::DeviceId::dummy());
        #[cfg(all(not(wayland_platform), x11_platform))]
-        return DeviceId::X(unsafe { x11::DeviceId::dummy() });
+        return DeviceId::X(x11::DeviceId::dummy());
    }
 }

@@ -642,18 +647,18 @@ pub(crate) enum PlatformCustomCursor {

 /// Hooks for X11 errors.
 #[cfg(x11_platform)]
-pub(crate) static mut XLIB_ERROR_HOOKS: Mutex<Vec<XlibErrorHook>> = Mutex::new(Vec::new());
+pub(crate) static XLIB_ERROR_HOOKS: Mutex<Vec<XlibErrorHook>> = Mutex::new(Vec::new());

 #[cfg(x11_platform)]
 unsafe extern "C" fn x_error_callback(
    display: *mut x11::ffi::Display,
    event: *mut x11::ffi::XErrorEvent,
 ) -> c_int {
-    let xconn_lock = X11_BACKEND.lock().unwrap();
+    let xconn_lock = X11_BACKEND.lock().unwrap_or_else(|e| e.into_inner());
    if let Ok(ref xconn) = *xconn_lock {
        // Call all the hooks.
        let mut error_handled = false;
-        for hook in unsafe { XLIB_ERROR_HOOKS.lock() }.unwrap().iter() {
+        for hook in XLIB_ERROR_HOOKS.lock().unwrap().iter() {
            error_handled |= hook(display as *mut _, event as *mut _);
        }

@@ -691,22 +696,27 @@ unsafe extern "C" fn x_error_callback(
    0
 }

-pub enum EventLoop {
+pub enum EventLoop<T: 'static> {
    #[cfg(wayland_platform)]
-    Wayland(Box<wayland::EventLoop>),
+    Wayland(Box<wayland::EventLoop<T>>),
    #[cfg(x11_platform)]
-    X(x11::EventLoop),
+    X(x11::EventLoop<T>),
 }

-#[derive(Clone)]
-pub enum EventLoopProxy {
+pub enum EventLoopProxy<T: 'static> {
    #[cfg(x11_platform)]
-    X(x11::EventLoopProxy),
+    X(x11::EventLoopProxy<T>),
    #[cfg(wayland_platform)]
-    Wayland(wayland::EventLoopProxy),
+    Wayland(wayland::EventLoopProxy<T>),
 }

-impl EventLoop {
+impl<T: 'static> Clone for EventLoopProxy<T> {
+    fn clone(&self) -> Self {
+        x11_or_wayland!(match self; EventLoopProxy(proxy) => proxy.clone(); as EventLoopProxy)
+    }
+}
+
+impl<T: 'static> EventLoop<T> {
    pub(crate) fn new(
        attributes: &PlatformSpecificEventLoopAttributes,
    ) -> Result<Self, EventLoopError> {
@@ -765,15 +775,17 @@ impl EventLoop {
    }

    #[cfg(wayland_platform)]
-    fn new_wayland_any_thread() -> Result<EventLoop, EventLoopError> {
+    fn new_wayland_any_thread() -> Result<EventLoop<T>, EventLoopError> {
        wayland::EventLoop::new().map(|evlp| EventLoop::Wayland(Box::new(evlp)))
    }

    #[cfg(x11_platform)]
-    fn new_x11_any_thread() -> Result<EventLoop, EventLoopError> {
-        let xconn = match X11_BACKEND.lock().unwrap().as_ref() {
+    fn new_x11_any_thread() -> Result<EventLoop<T>, EventLoopError> {
+        let xconn = match X11_BACKEND.lock().unwrap_or_else(|e| e.into_inner()).as_ref() {
            Ok(xconn) => xconn.clone(),
-            Err(_) => return Err(EventLoopError::NotSupported(NotSupportedError::new())),
+            Err(err) => {
+                return Err(EventLoopError::Os(os_error!(OsError::XNotSupported(err.clone()))))
+            },
        };

        Ok(EventLoop::X(x11::EventLoop::new(xconn)))
@@ -789,27 +801,29 @@ impl EventLoop {
        }
    }

-    pub fn create_proxy(&self) -> EventLoopProxy {
+    pub fn create_proxy(&self) -> EventLoopProxy<T> {
        x11_or_wayland!(match self; EventLoop(evlp) => evlp.create_proxy(); as EventLoopProxy)
    }

-    pub fn run_app<A: ApplicationHandler>(self, app: &mut A) -> Result<(), EventLoopError> {
-        x11_or_wayland!(match self; EventLoop(evlp) => evlp.run_app(app))
+    pub fn run<F>(mut self, callback: F) -> Result<(), EventLoopError>
+    where
+        F: FnMut(crate::event::Event<T>, &RootELW),
+    {
+        self.run_on_demand(callback)
    }

-    pub fn run_app_on_demand<A: ApplicationHandler>(
-        &mut self,
-        app: &mut A,
-    ) -> Result<(), EventLoopError> {
-        x11_or_wayland!(match self; EventLoop(evlp) => evlp.run_app_on_demand(app))
+    pub fn run_on_demand<F>(&mut self, callback: F) -> Result<(), EventLoopError>
+    where
+        F: FnMut(crate::event::Event<T>, &RootELW),
+    {
+        x11_or_wayland!(match self; EventLoop(evlp) => evlp.run_on_demand(callback))
    }

-    pub fn pump_app_events<A: ApplicationHandler>(
-        &mut self,
-        timeout: Option<Duration>,
-        app: &mut A,
-    ) -> PumpStatus {
-        x11_or_wayland!(match self; EventLoop(evlp) => evlp.pump_app_events(timeout, app))
+    pub fn pump_events<F>(&mut self, timeout: Option<Duration>, callback: F) -> PumpStatus
+    where
+        F: FnMut(crate::event::Event<T>, &RootELW),
+    {
+        x11_or_wayland!(match self; EventLoop(evlp) => evlp.pump_events(timeout, callback))
    }

    pub fn window_target(&self) -> &crate::event_loop::ActiveEventLoop {
@@ -817,21 +831,21 @@ impl EventLoop {
    }
 }

-impl AsFd for EventLoop {
+impl<T> AsFd for EventLoop<T> {
    fn as_fd(&self) -> BorrowedFd<'_> {
        x11_or_wayland!(match self; EventLoop(evlp) => evlp.as_fd())
    }
 }

-impl AsRawFd for EventLoop {
+impl<T> AsRawFd for EventLoop<T> {
    fn as_raw_fd(&self) -> RawFd {
        x11_or_wayland!(match self; EventLoop(evlp) => evlp.as_raw_fd())
    }
 }

-impl EventLoopProxy {
-    pub fn wake_up(&self) {
-        x11_or_wayland!(match self; EventLoopProxy(proxy) => proxy.wake_up())
+impl<T: 'static> EventLoopProxy<T> {
+    pub fn send_event(&self, event: T) -> Result<(), EventLoopClosed<T>> {
+        x11_or_wayland!(match self; EventLoopProxy(proxy) => proxy.send_event(event))
    }
 }

@@ -889,6 +903,11 @@ impl ActiveEventLoop {
        x11_or_wayland!(match self; Self(evlp) => evlp.raw_display_handle_rwh_05())
    }

+    #[inline]
+    pub fn system_theme(&self) -> Option<Theme> {
+        None
+    }
+
    #[cfg(feature = "rwh_06")]
    #[inline]
    pub fn raw_display_handle_rwh_06(
--- a/src/platform_impl/linux/wayland/event_loop/mod.rs
+++ b/src/platform_impl/linux/wayland/event_loop/mod.rs
@@ -5,6 +5,7 @@ use std::io::Result as IOResult;
 use std::marker::PhantomData;
 use std::mem;
 use std::os::unix::io::{AsFd, AsRawFd, BorrowedFd, RawFd};
+use std::rc::Rc;
 use std::sync::atomic::Ordering;
 use std::sync::{Arc, Mutex};
 use std::time::{Duration, Instant};
@@ -13,7 +14,6 @@ use sctk::reexports::calloop::Error as CalloopError;
 use sctk::reexports::calloop_wayland_source::WaylandSource;
 use sctk::reexports::client::{globals, Connection, QueueHandle};

-use crate::application::ApplicationHandler;
 use crate::cursor::OnlyCursorImage;
 use crate::dpi::LogicalSize;
 use crate::error::{EventLoopError, OsError as RootOsError};
@@ -39,7 +39,7 @@ use super::{logical_to_physical_rounded, DeviceId, WaylandError, WindowId};
 type WaylandDispatcher = calloop::Dispatcher<'static, WaylandSource<WinitState>, WinitState>;

 /// The Wayland event loop.
-pub struct EventLoop {
+pub struct EventLoop<T: 'static> {
    /// Has `run` or `run_on_demand` been called or a call to `pump_events` that starts the loop
    loop_running: bool,

@@ -47,8 +47,13 @@ pub struct EventLoop {
    compositor_updates: Vec<WindowCompositorUpdate>,
    window_ids: Vec<WindowId>,

-    /// Event loop proxy
-    event_loop_proxy: EventLoopProxy,
+    /// Sender of user events.
+    user_events_sender: calloop::channel::Sender<T>,
+
+    // XXX can't remove RefCell out of here, unless we can plumb generics into the `Window`, which
+    // we don't really want, since it'll break public API by a lot.
+    /// Pending events from the user.
+    pending_user_events: Rc<RefCell<Vec<T>>>,

    /// The Wayland dispatcher to has raw access to the queue when needed, such as
    /// when creating a new window.
@@ -65,8 +70,8 @@ pub struct EventLoop {
    event_loop: calloop::EventLoop<'static, WinitState>,
 }

-impl EventLoop {
-    pub fn new() -> Result<EventLoop, EventLoopError> {
+impl<T: 'static> EventLoop<T> {
+    pub fn new() -> Result<EventLoop<T>, EventLoopError> {
        macro_rules! map_err {
            ($e:expr, $err:expr) => {
                $e.map_err(|error| os_error!($err(error).into()))
@@ -109,12 +114,16 @@ impl EventLoop {
        )?;

        // Setup the user proxy.
-        let (ping, ping_source) = calloop::ping::make_ping().unwrap();
+        let pending_user_events = Rc::new(RefCell::new(Vec::new()));
+        let pending_user_events_clone = pending_user_events.clone();
+        let (user_events_sender, user_events_channel) = calloop::channel::channel();
        let result = event_loop
            .handle()
-            .insert_source(ping_source, move |_, _, winit_state: &mut WinitState| {
-                winit_state.dispatched_events = true;
-                winit_state.proxy_wake_up = true;
+            .insert_source(user_events_channel, move |event, _, winit_state: &mut WinitState| {
+                if let calloop::channel::Event::Msg(msg) = event {
+                    winit_state.dispatched_events = true;
+                    pending_user_events_clone.borrow_mut().push(msg);
+                }
            })
            .map_err(|error| error.error);
        map_err!(result, WaylandError::Calloop)?;
@@ -152,7 +161,8 @@ impl EventLoop {
            window_ids: Vec::new(),
            connection,
            wayland_dispatcher,
-            event_loop_proxy: EventLoopProxy::new(ping),
+            user_events_sender,
+            pending_user_events,
            event_loop,
            window_target: RootActiveEventLoop {
                p: PlatformActiveEventLoop::Wayland(window_target),
@@ -163,16 +173,12 @@ impl EventLoop {
        Ok(event_loop)
    }

-    pub fn run_app<A: ApplicationHandler>(mut self, app: &mut A) -> Result<(), EventLoopError> {
-        self.run_app_on_demand(app)
-    }
-
-    pub fn run_app_on_demand<A: ApplicationHandler>(
-        &mut self,
-        app: &mut A,
-    ) -> Result<(), EventLoopError> {
+    pub fn run_on_demand<F>(&mut self, mut event_handler: F) -> Result<(), EventLoopError>
+    where
+        F: FnMut(Event<T>, &RootActiveEventLoop),
+    {
        let exit = loop {
-            match self.pump_app_events(None, app) {
+            match self.pump_events(None, &mut event_handler) {
                PumpStatus::Exit(0) => {
                    break Ok(());
                },
@@ -194,27 +200,26 @@ impl EventLoop {
        exit
    }

-    pub fn pump_app_events<A: ApplicationHandler>(
-        &mut self,
-        timeout: Option<Duration>,
-        app: &mut A,
-    ) -> PumpStatus {
+    pub fn pump_events<F>(&mut self, timeout: Option<Duration>, mut callback: F) -> PumpStatus
+    where
+        F: FnMut(Event<T>, &RootActiveEventLoop),
+    {
        if !self.loop_running {
            self.loop_running = true;

            // Run the initial loop iteration.
-            self.single_iteration(app, StartCause::Init);
+            self.single_iteration(&mut callback, StartCause::Init);
        }

        // Consider the possibility that the `StartCause::Init` iteration could
        // request to Exit.
        if !self.exiting() {
-            self.poll_events_with_timeout(timeout, app);
+            self.poll_events_with_timeout(timeout, &mut callback);
        }
        if let Some(code) = self.exit_code() {
            self.loop_running = false;

-            app.exiting(&self.window_target);
+            callback(Event::LoopExiting, self.window_target());

            PumpStatus::Exit(code)
        } else {
@@ -222,11 +227,10 @@ impl EventLoop {
        }
    }

-    pub fn poll_events_with_timeout<A: ApplicationHandler>(
-        &mut self,
-        mut timeout: Option<Duration>,
-        app: &mut A,
-    ) {
+    pub fn poll_events_with_timeout<F>(&mut self, mut timeout: Option<Duration>, mut callback: F)
+    where
+        F: FnMut(Event<T>, &RootActiveEventLoop),
+    {
        let cause = loop {
            let start = Instant::now();

@@ -288,10 +292,13 @@ impl EventLoop {
            break cause;
        };

-        self.single_iteration(app, cause);
+        self.single_iteration(&mut callback, cause);
    }

-    fn single_iteration<A: ApplicationHandler>(&mut self, app: &mut A, cause: StartCause) {
+    fn single_iteration<F>(&mut self, callback: &mut F, cause: StartCause)
+    where
+        F: FnMut(Event<T>, &RootActiveEventLoop),
+    {
        // NOTE currently just indented to simplify the diff

        // We retain these grow-only scratch buffers as part of the EventLoop
@@ -302,17 +309,18 @@ impl EventLoop {
        let mut buffer_sink = std::mem::take(&mut self.buffer_sink);
        let mut window_ids = std::mem::take(&mut self.window_ids);

-        app.new_events(&self.window_target, cause);
+        callback(Event::NewEvents(cause), &self.window_target);

        // NB: For consistency all platforms must emit a 'resumed' event even though Wayland
        // applications don't themselves have a formal suspend/resume lifecycle.
        if cause == StartCause::Init {
-            app.resumed(&self.window_target);
+            callback(Event::Resumed, &self.window_target);
        }

-        // Indicate user wake up.
-        if self.with_state(|state| mem::take(&mut state.proxy_wake_up)) {
-            app.proxy_wake_up(&self.window_target);
+        // Handle pending user events. We don't need back buffer, since we can't dispatch
+        // user events indirectly via callback to the user.
+        for user_event in self.pending_user_events.borrow_mut().drain(..) {
+            callback(Event::UserEvent(user_event), &self.window_target);
        }

        // Drain the pending compositor updates.
@@ -333,13 +341,18 @@ impl EventLoop {
                let old_physical_size = physical_size;

                let new_inner_size = Arc::new(Mutex::new(physical_size));
-                let root_window_id = crate::window::WindowId(window_id);
-                let event = WindowEvent::ScaleFactorChanged {
-                    scale_factor,
-                    inner_size_writer: InnerSizeWriter::new(Arc::downgrade(&new_inner_size)),
-                };
-
-                app.window_event(&self.window_target, root_window_id, event);
+                callback(
+                    Event::WindowEvent {
+                        window_id: crate::window::WindowId(window_id),
+                        event: WindowEvent::ScaleFactorChanged {
+                            scale_factor,
+                            inner_size_writer: InnerSizeWriter::new(Arc::downgrade(
+                                &new_inner_size,
+                            )),
+                        },
+                    },
+                    &self.window_target,
+                );

                let physical_size = *new_inner_size.lock().unwrap();
                drop(new_inner_size);
@@ -382,14 +395,23 @@ impl EventLoop {
                    size
                });

-                let window_id = crate::window::WindowId(window_id);
-                let event = WindowEvent::Resized(physical_size);
-                app.window_event(&self.window_target, window_id, event);
+                callback(
+                    Event::WindowEvent {
+                        window_id: crate::window::WindowId(window_id),
+                        event: WindowEvent::Resized(physical_size),
+                    },
+                    &self.window_target,
+                );
            }

            if compositor_update.close_window {
-                let window_id = crate::window::WindowId(window_id);
-                app.window_event(&self.window_target, window_id, WindowEvent::CloseRequested);
+                callback(
+                    Event::WindowEvent {
+                        window_id: crate::window::WindowId(window_id),
+                        event: WindowEvent::CloseRequested,
+                    },
+                    &self.window_target,
+                );
            }
        }

@@ -398,15 +420,8 @@ impl EventLoop {
            buffer_sink.append(&mut state.window_events_sink.lock().unwrap());
        });
        for event in buffer_sink.drain() {
-            match event {
-                Event::WindowEvent { window_id, event } => {
-                    app.window_event(&self.window_target, window_id, event)
-                },
-                Event::DeviceEvent { device_id, event } => {
-                    app.device_event(&self.window_target, device_id, event)
-                },
-                _ => unreachable!("event which is neither device nor window event."),
-            }
+            let event = event.map_nonuser_event().unwrap();
+            callback(event, &self.window_target);
        }

        // Handle non-synthetic events.
@@ -414,15 +429,8 @@ impl EventLoop {
            buffer_sink.append(&mut state.events_sink);
        });
        for event in buffer_sink.drain() {
-            match event {
-                Event::WindowEvent { window_id, event } => {
-                    app.window_event(&self.window_target, window_id, event)
-                },
-                Event::DeviceEvent { device_id, event } => {
-                    app.device_event(&self.window_target, device_id, event)
-                },
-                _ => unreachable!("event which is neither device nor window event."),
-            }
+            let event = event.map_nonuser_event().unwrap();
+            callback(event, &self.window_target);
        }

        // Collect the window ids
@@ -458,8 +466,10 @@ impl EventLoop {
            });

            if let Some(event) = event {
-                let window_id = crate::window::WindowId(*window_id);
-                app.window_event(&self.window_target, window_id, event);
+                callback(
+                    Event::WindowEvent { window_id: crate::window::WindowId(*window_id), event },
+                    &self.window_target,
+                );
            }
        }

@@ -469,7 +479,7 @@ impl EventLoop {
        });

        // This is always the last event we dispatch before poll again
-        app.about_to_wait(&self.window_target);
+        callback(Event::AboutToWait, &self.window_target);

        // Update the window frames and schedule redraws.
        let mut wake_up = false;
@@ -513,8 +523,8 @@ impl EventLoop {
    }

    #[inline]
-    pub fn create_proxy(&self) -> EventLoopProxy {
-        self.event_loop_proxy.clone()
+    pub fn create_proxy(&self) -> EventLoopProxy<T> {
+        EventLoopProxy::new(self.user_events_sender.clone())
    }

    #[inline]
@@ -576,13 +586,13 @@ impl EventLoop {
    }
 }

-impl AsFd for EventLoop {
+impl<T> AsFd for EventLoop<T> {
    fn as_fd(&self) -> BorrowedFd<'_> {
        self.event_loop.as_fd()
    }
 }

-impl AsRawFd for EventLoop {
+impl<T> AsRawFd for EventLoop<T> {
    fn as_raw_fd(&self) -> RawFd {
        self.event_loop.as_raw_fd()
    }
--- a/src/platform_impl/linux/wayland/event_loop/proxy.rs
+++ b/src/platform_impl/linux/wayland/event_loop/proxy.rs
@@ -1,19 +1,28 @@
 //! An event loop proxy.

-use sctk::reexports::calloop::ping::Ping;
+use std::sync::mpsc::SendError;
+
+use sctk::reexports::calloop::channel::Sender;
+
+use crate::event_loop::EventLoopClosed;

 /// A handle that can be sent across the threads and used to wake up the `EventLoop`.
-#[derive(Clone)]
-pub struct EventLoopProxy {
-    ping: Ping,
+pub struct EventLoopProxy<T: 'static> {
+    user_events_sender: Sender<T>,
 }

-impl EventLoopProxy {
-    pub fn new(ping: Ping) -> Self {
-        Self { ping }
-    }
-
-    pub fn wake_up(&self) {
-        self.ping.ping();
+impl<T: 'static> Clone for EventLoopProxy<T> {
+    fn clone(&self) -> Self {
+        EventLoopProxy { user_events_sender: self.user_events_sender.clone() }
+    }
+}
+
+impl<T: 'static> EventLoopProxy<T> {
+    pub fn new(user_events_sender: Sender<T>) -> Self {
+        Self { user_events_sender }
+    }
+
+    pub fn send_event(&self, event: T) -> Result<(), EventLoopClosed<T>> {
+        self.user_events_sender.send(event).map_err(|SendError(error)| EventLoopClosed(error))
    }
 }
--- a/src/platform_impl/linux/wayland/event_loop/sink.rs
+++ b/src/platform_impl/linux/wayland/event_loop/sink.rs
@@ -12,7 +12,7 @@ use super::{DeviceId, WindowId};
 /// to the winit's user.
 #[derive(Default)]
 pub struct EventSink {
-    pub(crate) window_events: Vec<Event>,
+    pub window_events: Vec<Event<()>>,
 }

 impl EventSink {
@@ -47,7 +47,7 @@ impl EventSink {
    }

    #[inline]
-    pub(crate) fn drain(&mut self) -> Drain<'_, Event> {
+    pub fn drain(&mut self) -> Drain<'_, Event<()>> {
        self.window_events.drain(..)
    }
 }
--- a/src/platform_impl/linux/wayland/mod.rs
+++ b/src/platform_impl/linux/wayland/mod.rs
@@ -66,7 +66,7 @@ impl From<WaylandError> for OsError {
 pub struct DeviceId;

 impl DeviceId {
-    pub const unsafe fn dummy() -> Self {
+    pub const fn dummy() -> Self {
        DeviceId
    }
 }
--- a/src/platform_impl/linux/wayland/seat/keyboard/mod.rs
+++ b/src/platform_impl/linux/wayland/seat/keyboard/mod.rs
@@ -18,7 +18,6 @@ use crate::keyboard::ModifiersState;

 use crate::platform_impl::common::xkb::Context;
 use crate::platform_impl::wayland::event_loop::sink::EventSink;
-use crate::platform_impl::wayland::seat::WinitSeatState;
 use crate::platform_impl::wayland::state::WinitState;
 use crate::platform_impl::wayland::{self, DeviceId, WindowId};

@@ -33,7 +32,17 @@ impl Dispatch<WlKeyboard, KeyboardData, WinitState> for WinitState {
    ) {
        let seat_state = match state.seats.get_mut(&data.seat.id()) {
            Some(seat_state) => seat_state,
-            None => return,
+            None => {
+                warn!("Received keyboard event {event:?} without seat");
+                return;
+            },
+        };
+        let keyboard_state = match seat_state.keyboard_state.as_mut() {
+            Some(keyboard_state) => keyboard_state,
+            None => {
+                warn!("Received keyboard event {event:?} without keyboard");
+                return;
+            },
        };

        match event {
@@ -43,7 +52,7 @@ impl Dispatch<WlKeyboard, KeyboardData, WinitState> for WinitState {
                        warn!("non-xkb compatible keymap")
                    },
                    WlKeymapFormat::XkbV1 => {
-                        let context = &mut seat_state.keyboard_state.as_mut().unwrap().xkb_context;
+                        let context = &mut keyboard_state.xkb_context;
                        context.set_keymap_from_fd(fd, size as usize);
                    },
                    _ => unreachable!(),
@@ -67,7 +76,6 @@ impl Dispatch<WlKeyboard, KeyboardData, WinitState> for WinitState {
                };

                // Drop the repeat, if there were any.
-                let keyboard_state = seat_state.keyboard_state.as_mut().unwrap();
                keyboard_state.current_repeat = None;
                if let Some(token) = keyboard_state.repeat_token.take() {
                    keyboard_state.loop_handle.remove(token);
@@ -93,7 +101,6 @@ impl Dispatch<WlKeyboard, KeyboardData, WinitState> for WinitState {

                // NOTE: we should drop the repeat regardless whethere it was for the present
                // window of for the window which just went gone.
-                let keyboard_state = seat_state.keyboard_state.as_mut().unwrap();
                keyboard_state.current_repeat = None;
                if let Some(token) = keyboard_state.repeat_token.take() {
                    keyboard_state.loop_handle.remove(token);
@@ -128,7 +135,7 @@ impl Dispatch<WlKeyboard, KeyboardData, WinitState> for WinitState {
                let key = key + 8;

                key_input(
-                    seat_state,
+                    keyboard_state,
                    &mut state.events_sink,
                    data,
                    key,
@@ -136,7 +143,6 @@ impl Dispatch<WlKeyboard, KeyboardData, WinitState> for WinitState {
                    false,
                );

-                let keyboard_state = seat_state.keyboard_state.as_mut().unwrap();
                let delay = match keyboard_state.repeat_info {
                    RepeatInfo::Repeat { delay, .. } => delay,
                    RepeatInfo::Disable => return,
@@ -163,18 +169,25 @@ impl Dispatch<WlKeyboard, KeyboardData, WinitState> for WinitState {
                        state.dispatched_events = true;

                        let data = wl_keyboard.data::<KeyboardData>().unwrap();
-                        let seat_state = state.seats.get_mut(&data.seat.id()).unwrap();
+                        let seat_state = match state.seats.get_mut(&data.seat.id()) {
+                            Some(seat_state) => seat_state,
+                            None => return TimeoutAction::Drop,
+                        };

-                        // NOTE: The removed on event source is batched, but key change to
-                        // `None` is instant.
-                        let repeat_keycode =
-                            match seat_state.keyboard_state.as_ref().unwrap().current_repeat {
-                                Some(repeat_keycode) => repeat_keycode,
-                                None => return TimeoutAction::Drop,
-                            };
+                        let keyboard_state = match seat_state.keyboard_state.as_mut() {
+                            Some(keyboard_state) => keyboard_state,
+                            None => return TimeoutAction::Drop,
+                        };
+
+                        // NOTE: The removed on event source is batched, but key change to `None`
+                        // is instant.
+                        let repeat_keycode = match keyboard_state.current_repeat {
+                            Some(repeat_keycode) => repeat_keycode,
+                            None => return TimeoutAction::Drop,
+                        };

                        key_input(
-                            seat_state,
+                            keyboard_state,
                            &mut state.events_sink,
                            data,
                            repeat_keycode,
@@ -183,7 +196,7 @@ impl Dispatch<WlKeyboard, KeyboardData, WinitState> for WinitState {
                        );

                        // NOTE: the gap could change dynamically while repeat is going.
-                        match seat_state.keyboard_state.as_ref().unwrap().repeat_info {
+                        match keyboard_state.repeat_info {
                            RepeatInfo::Repeat { gap, .. } => TimeoutAction::ToDuration(gap),
                            RepeatInfo::Disable => TimeoutAction::Drop,
                        }
@@ -194,7 +207,7 @@ impl Dispatch<WlKeyboard, KeyboardData, WinitState> for WinitState {
                let key = key + 8;

                key_input(
-                    seat_state,
+                    keyboard_state,
                    &mut state.events_sink,
                    data,
                    key,
@@ -202,7 +215,6 @@ impl Dispatch<WlKeyboard, KeyboardData, WinitState> for WinitState {
                    false,
                );

-                let keyboard_state = seat_state.keyboard_state.as_mut().unwrap();
                if keyboard_state.repeat_info != RepeatInfo::Disable
                    && keyboard_state.xkb_context.keymap_mut().unwrap().key_repeats(key)
                    && Some(key) == keyboard_state.current_repeat
@@ -216,7 +228,7 @@ impl Dispatch<WlKeyboard, KeyboardData, WinitState> for WinitState {
            WlKeyboardEvent::Modifiers {
                mods_depressed, mods_latched, mods_locked, group, ..
            } => {
-                let xkb_context = &mut seat_state.keyboard_state.as_mut().unwrap().xkb_context;
+                let xkb_context = &mut keyboard_state.xkb_context;
                let xkb_state = match xkb_context.state_mut() {
                    Some(state) => state,
                    None => return,
@@ -240,7 +252,6 @@ impl Dispatch<WlKeyboard, KeyboardData, WinitState> for WinitState {
                );
            },
            WlKeyboardEvent::RepeatInfo { rate, delay } => {
-                let keyboard_state = seat_state.keyboard_state.as_mut().unwrap();
                keyboard_state.repeat_info = if rate == 0 {
                    // Stop the repeat once we get a disable event.
                    keyboard_state.current_repeat = None;
@@ -348,7 +359,7 @@ impl KeyboardData {
 }

 fn key_input(
-    seat_state: &mut WinitSeatState,
+    keyboard_state: &mut KeyboardState,
    event_sink: &mut EventSink,
    data: &KeyboardData,
    keycode: u32,
@@ -360,8 +371,6 @@ fn key_input(
        None => return,
    };

-    let keyboard_state = seat_state.keyboard_state.as_mut().unwrap();
-
    let device_id = crate::event::DeviceId(crate::platform_impl::DeviceId::Wayland(DeviceId));
    if let Some(mut key_context) = keyboard_state.xkb_context.key_context() {
        let event = key_context.process_key_event(keycode, state, repeat);
--- a/src/platform_impl/linux/wayland/seat/mod.rs
+++ b/src/platform_impl/linux/wayland/seat/mod.rs
@@ -3,6 +3,7 @@
 use std::sync::Arc;

 use ahash::AHashMap;
+use tracing::warn;

 use sctk::reexports::client::backend::ObjectId;
 use sctk::reexports::client::protocol::wl_seat::WlSeat;
@@ -76,7 +77,13 @@ impl SeatHandler for WinitState {
        seat: WlSeat,
        capability: SeatCapability,
    ) {
-        let seat_state = self.seats.get_mut(&seat.id()).unwrap();
+        let seat_state = match self.seats.get_mut(&seat.id()) {
+            Some(seat_state) => seat_state,
+            None => {
+                warn!("Received wl_seat::new_capability for unknown seat");
+                return;
+            },
+        };

        match capability {
            SeatCapability::Touch if seat_state.touch.is_none() => {
@@ -139,7 +146,13 @@ impl SeatHandler for WinitState {
        seat: WlSeat,
        capability: SeatCapability,
    ) {
-        let seat_state = self.seats.get_mut(&seat.id()).unwrap();
+        let seat_state = match self.seats.get_mut(&seat.id()) {
+            Some(seat_state) => seat_state,
+            None => {
+                warn!("Received wl_seat::remove_capability for unknown seat");
+                return;
+            },
+        };

        if let Some(text_input) = seat_state.text_input.take() {
            text_input.destroy();
--- a/src/platform_impl/linux/wayland/seat/pointer/mod.rs
+++ b/src/platform_impl/linux/wayland/seat/pointer/mod.rs
@@ -4,6 +4,8 @@ use std::ops::Deref;
 use std::sync::{Arc, Mutex};
 use std::time::Duration;

+use tracing::warn;
+
 use sctk::reexports::client::delegate_dispatch;
 use sctk::reexports::client::protocol::wl_pointer::WlPointer;
 use sctk::reexports::client::protocol::wl_seat::WlSeat;
@@ -41,7 +43,21 @@ impl PointerHandler for WinitState {
        events: &[PointerEvent],
    ) {
        let seat = pointer.winit_data().seat();
-        let seat_state = self.seats.get(&seat.id()).unwrap();
+        let seat_state = match self.seats.get(&seat.id()) {
+            Some(seat_state) => seat_state,
+            None => {
+                warn!("Received pointer event without seat");
+                return;
+            },
+        };
+
+        let themed_pointer = match seat_state.pointer.as_ref() {
+            Some(pointer) => pointer,
+            None => {
+                warn!("Received pointer event without pointer");
+                return;
+            },
+        };

        let device_id = crate::event::DeviceId(crate::platform_impl::DeviceId::Wayland(DeviceId));

@@ -78,9 +94,7 @@ impl PointerHandler for WinitState {
                        event.position.0,
                        event.position.1,
                    ) {
-                        if let Some(pointer) = seat_state.pointer.as_ref() {
-                            let _ = pointer.set_cursor(connection, icon);
-                        }
+                        let _ = themed_pointer.set_cursor(connection, icon);
                    }
                },
                PointerEventKind::Leave { .. } if parent_surface != surface => {
@@ -113,9 +127,7 @@ impl PointerHandler for WinitState {
                    self.events_sink
                        .push_window_event(WindowEvent::CursorEntered { device_id }, window_id);

-                    if let Some(pointer) = seat_state.pointer.as_ref().map(Arc::downgrade) {
-                        window.pointer_entered(pointer);
-                    }
+                    window.pointer_entered(Arc::downgrade(themed_pointer));

                    // Set the currently focused surface.
                    pointer.winit_data().inner.lock().unwrap().surface = Some(window_id);
@@ -126,9 +138,7 @@ impl PointerHandler for WinitState {
                    );
                },
                PointerEventKind::Leave { .. } => {
-                    if let Some(pointer) = seat_state.pointer.as_ref().map(Arc::downgrade) {
-                        window.pointer_left(pointer);
-                    }
+                    window.pointer_left(Arc::downgrade(themed_pointer));

                    // Remove the active surface.
                    pointer.winit_data().inner.lock().unwrap().surface = None;
@@ -185,13 +195,13 @@ impl PointerHandler for WinitState {
                    // Mice events have both pixel and discrete delta's at the same time. So prefer
                    // the descrite values if they are present.
                    let delta = if has_discrete_scroll {
-                        // XXX Wayland sign convention is the inverse of winit.
+                        // NOTE: Wayland sign convention is the inverse of winit.
                        MouseScrollDelta::LineDelta(
                            (-horizontal.discrete) as f32,
                            (-vertical.discrete) as f32,
                        )
                    } else {
-                        // XXX Wayland sign convention is the inverse of winit.
+                        // NOTE: Wayland sign convention is the inverse of winit.
                        MouseScrollDelta::PixelDelta(
                            LogicalPosition::new(-horizontal.absolute, -vertical.absolute)
                                .to_physical(scale_factor),
--- a/src/platform_impl/linux/wayland/seat/touch/mod.rs
+++ b/src/platform_impl/linux/wayland/seat/touch/mod.rs
@@ -1,5 +1,7 @@
 //! Touch handling.

+use tracing::warn;
+
 use sctk::reexports::client::protocol::wl_seat::WlSeat;
 use sctk::reexports::client::protocol::wl_surface::WlSurface;
 use sctk::reexports::client::protocol::wl_touch::WlTouch;
@@ -31,11 +33,16 @@ impl TouchHandler for WinitState {
            None => return,
        };

-        let location = LogicalPosition::<f64>::from(position);
-
-        let seat_state = self.seats.get_mut(&touch.seat().id()).unwrap();
+        let seat_state = match self.seats.get_mut(&touch.seat().id()) {
+            Some(seat_state) => seat_state,
+            None => {
+                warn!("Received wl_touch::down without seat");
+                return;
+            },
+        };

        // Update the state of the point.
+        let location = LogicalPosition::<f64>::from(position);
        seat_state.touch_map.insert(id, TouchPoint { surface, location });

        self.events_sink.push_window_event(
@@ -61,7 +68,13 @@ impl TouchHandler for WinitState {
        _: u32,
        id: i32,
    ) {
-        let seat_state = self.seats.get_mut(&touch.seat().id()).unwrap();
+        let seat_state = match self.seats.get_mut(&touch.seat().id()) {
+            Some(seat_state) => seat_state,
+            None => {
+                warn!("Received wl_touch::up without seat");
+                return;
+            },
+        };

        // Remove the touch point.
        let touch_point = match seat_state.touch_map.remove(&id) {
@@ -98,7 +111,13 @@ impl TouchHandler for WinitState {
        id: i32,
        position: (f64, f64),
    ) {
-        let seat_state = self.seats.get_mut(&touch.seat().id()).unwrap();
+        let seat_state = match self.seats.get_mut(&touch.seat().id()) {
+            Some(seat_state) => seat_state,
+            None => {
+                warn!("Received wl_touch::motion without seat");
+                return;
+            },
+        };

        // Remove the touch point.
        let touch_point = match seat_state.touch_map.get_mut(&id) {
@@ -129,7 +148,13 @@ impl TouchHandler for WinitState {
    }

    fn cancel(&mut self, _: &Connection, _: &QueueHandle<Self>, touch: &WlTouch) {
-        let seat_state = self.seats.get_mut(&touch.seat().id()).unwrap();
+        let seat_state = match self.seats.get_mut(&touch.seat().id()) {
+            Some(seat_state) => seat_state,
+            None => {
+                warn!("Received wl_touch::cancel without seat");
+                return;
+            },
+        };

        for (id, touch_point) in seat_state.touch_map.drain() {
            let window_id = wayland::make_wid(&touch_point.surface);
--- a/src/platform_impl/linux/wayland/state.rs
+++ b/src/platform_impl/linux/wayland/state.rs
@@ -115,9 +115,6 @@ pub struct WinitState {
    /// Whether we have dispatched events to the user thus we want to
    /// send `AboutToWait` and normally wakeup the user.
    pub dispatched_events: bool,
-
-    /// Whether the user initiated a wake up.
-    pub proxy_wake_up: bool,
 }

 impl WinitState {
@@ -195,7 +192,6 @@ impl WinitState {
            loop_handle,
            // Make it true by default.
            dispatched_events: true,
-            proxy_wake_up: false,
        })
    }

@@ -343,12 +339,30 @@ impl CompositorHandler for WinitState {
        &mut self,
        _: &Connection,
        _: &QueueHandle<Self>,
-        _: &wayland_client::protocol::wl_surface::WlSurface,
+        _: &WlSurface,
        _: wayland_client::protocol::wl_output::Transform,
    ) {
        // TODO(kchibisov) we need to expose it somehow in winit.
    }

+    fn surface_enter(
+        &mut self,
+        _: &Connection,
+        _: &QueueHandle<Self>,
+        _: &WlSurface,
+        _: &WlOutput,
+    ) {
+    }
+
+    fn surface_leave(
+        &mut self,
+        _: &Connection,
+        _: &QueueHandle<Self>,
+        _: &WlSurface,
+        _: &WlOutput,
+    ) {
+    }
+
    fn scale_factor_changed(
        &mut self,
        _: &Connection,
--- a/src/platform_impl/linux/x11/activation.rs
+++ b/src/platform_impl/linux/x11/activation.rs
@@ -165,7 +165,7 @@ fn push_display(buffer: &mut Vec<u8>, display: &impl std::fmt::Display) {
        buffer: &'a mut Vec<u8>,
    }

-    impl<'a> std::fmt::Write for Writer<'a> {
+    impl std::fmt::Write for Writer<'_> {
        fn write_str(&mut self, s: &str) -> std::fmt::Result {
            self.buffer.extend_from_slice(s.as_bytes());
            Ok(())
--- a/src/platform_impl/linux/x11/event_processor.rs
+++ b/src/platform_impl/linux/x11/event_processor.rs
@@ -72,9 +72,9 @@ pub struct EventProcessor {
 }

 impl EventProcessor {
-    pub(crate) fn process_event<F>(&mut self, xev: &mut XEvent, mut callback: F)
+    pub fn process_event<T: 'static, F>(&mut self, xev: &mut XEvent, mut callback: F)
    where
-        F: FnMut(&RootAEL, Event),
+        F: FnMut(&RootAEL, Event<T>),
    {
        self.process_xevent(xev, &mut callback);

@@ -129,6 +129,7 @@ impl EventProcessor {
    /// Specifically, this involves all of the KeyPress events in compose/pre-edit sequences,
    /// along with an extra copy of the KeyRelease events. This also prevents backspace and
    /// arrow keys from being detected twice.
+    #[must_use]
    fn filter_event(&mut self, xev: &mut XEvent) -> bool {
        let wt = Self::window_target(&self.target);
        unsafe {
@@ -139,14 +140,26 @@ impl EventProcessor {
        }
    }

-    fn process_xevent<F>(&mut self, xev: &mut XEvent, mut callback: F)
+    fn process_xevent<T: 'static, F>(&mut self, xev: &mut XEvent, mut callback: F)
    where
-        F: FnMut(&RootAEL, Event),
+        F: FnMut(&RootAEL, Event<T>),
    {
        let event_type = xev.get_type();

-        if self.filter_event(xev) {
-            if event_type == xlib::KeyPress || event_type == xlib::KeyRelease {
+        // If we have IME disabled, don't try to `filter_event`, since only IME can consume them
+        // and forward back. This is not desired for e.g. games since some IMEs may delay the input
+        // and game can toggle IME back when e.g. typing into some field where latency won't really
+        // matter.
+        let filtered = if event_type == xlib::KeyPress || event_type == xlib::KeyRelease {
+            let wt = Self::window_target(&self.target);
+            let ime = wt.ime.as_ref();
+            let window = self.active_window.map(|window| window as XWindow);
+            let forward_to_ime = ime
+                .and_then(|ime| window.map(|window| ime.borrow().is_ime_allowed(window)))
+                .unwrap_or(false);
+
+            let filtered = forward_to_ime && self.filter_event(xev);
+            if filtered {
                let xev: &XKeyEvent = xev.as_ref();
                if self.xmodmap.is_modifier(xev.keycode as u8) {
                    // Don't grow the buffer past the `MAX_MOD_REPLAY_LEN`. This could happen
@@ -159,6 +172,14 @@ impl EventProcessor {
                    self.xfiltered_modifiers.push_front(xev.serial);
                }
            }
+
+            filtered
+        } else {
+            self.filter_event(xev)
+        };
+
+        // Don't process event if it was filtered.
+        if filtered {
            return;
        }

@@ -387,9 +408,9 @@ impl EventProcessor {
        }
    }

-    fn client_message<F>(&mut self, xev: &XClientMessageEvent, mut callback: F)
+    fn client_message<T: 'static, F>(&mut self, xev: &XClientMessageEvent, mut callback: F)
    where
-        F: FnMut(&RootAEL, Event),
+        F: FnMut(&RootAEL, Event<T>),
    {
        let wt = Self::window_target(&self.target);
        let atoms = wt.xconn.atoms();
@@ -552,9 +573,9 @@ impl EventProcessor {
        }
    }

-    fn selection_notify<F>(&mut self, xev: &XSelectionEvent, mut callback: F)
+    fn selection_notify<T: 'static, F>(&mut self, xev: &XSelectionEvent, mut callback: F)
    where
-        F: FnMut(&RootAEL, Event),
+        F: FnMut(&RootAEL, Event<T>),
    {
        let wt = Self::window_target(&self.target);
        let atoms = wt.xconn.atoms();
@@ -586,9 +607,9 @@ impl EventProcessor {
        }
    }

-    fn configure_notify<F>(&self, xev: &XConfigureEvent, mut callback: F)
+    fn configure_notify<T: 'static, F>(&self, xev: &XConfigureEvent, mut callback: F)
    where
-        F: FnMut(&RootAEL, Event),
+        F: FnMut(&RootAEL, Event<T>),
    {
        let wt = Self::window_target(&self.target);

@@ -781,9 +802,9 @@ impl EventProcessor {
        });
    }

-    fn map_notify<F>(&self, xev: &XMapEvent, mut callback: F)
+    fn map_notify<T: 'static, F>(&self, xev: &XMapEvent, mut callback: F)
    where
-        F: FnMut(&RootAEL, Event),
+        F: FnMut(&RootAEL, Event<T>),
    {
        let window = xev.window as xproto::Window;
        let window_id = mkwid(window);
@@ -799,9 +820,9 @@ impl EventProcessor {
        callback(&self.target, event);
    }

-    fn destroy_notify<F>(&self, xev: &XDestroyWindowEvent, mut callback: F)
+    fn destroy_notify<T: 'static, F>(&self, xev: &XDestroyWindowEvent, mut callback: F)
    where
-        F: FnMut(&RootAEL, Event),
+        F: FnMut(&RootAEL, Event<T>),
    {
        let wt = Self::window_target(&self.target);

@@ -823,9 +844,9 @@ impl EventProcessor {
        callback(&self.target, Event::WindowEvent { window_id, event: WindowEvent::Destroyed });
    }

-    fn property_notify<F>(&mut self, xev: &XPropertyEvent, mut callback: F)
+    fn property_notify<T: 'static, F>(&mut self, xev: &XPropertyEvent, mut callback: F)
    where
-        F: FnMut(&RootAEL, Event),
+        F: FnMut(&RootAEL, Event<T>),
    {
        let wt = Self::window_target(&self.target);
        let atoms = wt.x_connection().atoms();
@@ -838,9 +859,9 @@ impl EventProcessor {
        }
    }

-    fn visibility_notify<F>(&self, xev: &XVisibilityEvent, mut callback: F)
+    fn visibility_notify<T: 'static, F>(&self, xev: &XVisibilityEvent, mut callback: F)
    where
-        F: FnMut(&RootAEL, Event),
+        F: FnMut(&RootAEL, Event<T>),
    {
        let xwindow = xev.window as xproto::Window;

@@ -855,9 +876,9 @@ impl EventProcessor {
        });
    }

-    fn expose<F>(&self, xev: &XExposeEvent, mut callback: F)
+    fn expose<T: 'static, F>(&self, xev: &XExposeEvent, mut callback: F)
    where
-        F: FnMut(&RootAEL, Event),
+        F: FnMut(&RootAEL, Event<T>),
    {
        // Multiple Expose events may be received for subareas of a window.
        // We issue `RedrawRequested` only for the last event of such a series.
@@ -871,9 +892,13 @@ impl EventProcessor {
        }
    }

-    fn xinput_key_input<F>(&mut self, xev: &mut XKeyEvent, state: ElementState, mut callback: F)
-    where
-        F: FnMut(&RootAEL, Event),
+    fn xinput_key_input<T: 'static, F>(
+        &mut self,
+        xev: &mut XKeyEvent,
+        state: ElementState,
+        mut callback: F,
+    ) where
+        F: FnMut(&RootAEL, Event<T>),
    {
        let wt = Self::window_target(&self.target);

@@ -985,13 +1010,13 @@ impl EventProcessor {
        }
    }

-    fn send_synthic_modifier_from_core<F>(
+    fn send_synthic_modifier_from_core<T: 'static, F>(
        &mut self,
        window_id: crate::window::WindowId,
        state: u16,
        mut callback: F,
    ) where
-        F: FnMut(&RootAEL, Event),
+        F: FnMut(&RootAEL, Event<T>),
    {
        let keymap = match self.xkb_context.keymap_mut() {
            Some(keymap) => keymap,
@@ -1018,9 +1043,13 @@ impl EventProcessor {
        callback(&self.target, event);
    }

-    fn xinput2_button_input<F>(&self, event: &XIDeviceEvent, state: ElementState, mut callback: F)
-    where
-        F: FnMut(&RootAEL, Event),
+    fn xinput2_button_input<T: 'static, F>(
+        &self,
+        event: &XIDeviceEvent,
+        state: ElementState,
+        mut callback: F,
+    ) where
+        F: FnMut(&RootAEL, Event<T>),
    {
        let wt = Self::window_target(&self.target);
        let window_id = mkwid(event.event as xproto::Window);
@@ -1071,9 +1100,9 @@ impl EventProcessor {
        callback(&self.target, event);
    }

-    fn xinput2_mouse_motion<F>(&self, event: &XIDeviceEvent, mut callback: F)
+    fn xinput2_mouse_motion<T: 'static, F>(&self, event: &XIDeviceEvent, mut callback: F)
    where
-        F: FnMut(&RootAEL, Event),
+        F: FnMut(&RootAEL, Event<T>),
    {
        let wt = Self::window_target(&self.target);

@@ -1149,9 +1178,9 @@ impl EventProcessor {
        }
    }

-    fn xinput2_mouse_enter<F>(&self, event: &XIEnterEvent, mut callback: F)
+    fn xinput2_mouse_enter<T: 'static, F>(&self, event: &XIEnterEvent, mut callback: F)
    where
-        F: FnMut(&RootAEL, Event),
+        F: FnMut(&RootAEL, Event<T>),
    {
        let wt = Self::window_target(&self.target);

@@ -1194,9 +1223,9 @@ impl EventProcessor {
        }
    }

-    fn xinput2_mouse_left<F>(&self, event: &XILeaveEvent, mut callback: F)
+    fn xinput2_mouse_left<T: 'static, F>(&self, event: &XILeaveEvent, mut callback: F)
    where
-        F: FnMut(&RootAEL, Event),
+        F: FnMut(&RootAEL, Event<T>),
    {
        let wt = Self::window_target(&self.target);
        let window = event.event as xproto::Window;
@@ -1217,9 +1246,9 @@ impl EventProcessor {
        }
    }

-    fn xinput2_focused<F>(&mut self, xev: &XIFocusInEvent, mut callback: F)
+    fn xinput2_focused<T: 'static, F>(&mut self, xev: &XIFocusInEvent, mut callback: F)
    where
-        F: FnMut(&RootAEL, Event),
+        F: FnMut(&RootAEL, Event<T>),
    {
        let wt = Self::window_target(&self.target);
        let window = xev.event as xproto::Window;
@@ -1276,9 +1305,9 @@ impl EventProcessor {
        callback(&self.target, event);
    }

-    fn xinput2_unfocused<F>(&mut self, xev: &XIFocusOutEvent, mut callback: F)
+    fn xinput2_unfocused<T: 'static, F>(&mut self, xev: &XIFocusOutEvent, mut callback: F)
    where
-        F: FnMut(&RootAEL, Event),
+        F: FnMut(&RootAEL, Event<T>),
    {
        let wt = Self::window_target(&self.target);
        let window = xev.event as xproto::Window;
@@ -1328,9 +1357,13 @@ impl EventProcessor {
        }
    }

-    fn xinput2_touch<F>(&mut self, xev: &XIDeviceEvent, phase: TouchPhase, mut callback: F)
-    where
-        F: FnMut(&RootAEL, Event),
+    fn xinput2_touch<T: 'static, F>(
+        &mut self,
+        xev: &XIDeviceEvent,
+        phase: TouchPhase,
+        mut callback: F,
+    ) where
+        F: FnMut(&RootAEL, Event<T>),
    {
        let wt = Self::window_target(&self.target);

@@ -1370,9 +1403,13 @@ impl EventProcessor {
        }
    }

-    fn xinput2_raw_button_input<F>(&self, xev: &XIRawEvent, state: ElementState, mut callback: F)
-    where
-        F: FnMut(&RootAEL, Event),
+    fn xinput2_raw_button_input<T: 'static, F>(
+        &self,
+        xev: &XIRawEvent,
+        state: ElementState,
+        mut callback: F,
+    ) where
+        F: FnMut(&RootAEL, Event<T>),
    {
        let wt = Self::window_target(&self.target);

@@ -1388,9 +1425,9 @@ impl EventProcessor {
        }
    }

-    fn xinput2_raw_mouse_motion<F>(&self, xev: &XIRawEvent, mut callback: F)
+    fn xinput2_raw_mouse_motion<T: 'static, F>(&self, xev: &XIRawEvent, mut callback: F)
    where
-        F: FnMut(&RootAEL, Event),
+        F: FnMut(&RootAEL, Event<T>),
    {
        let wt = Self::window_target(&self.target);

@@ -1448,9 +1485,13 @@ impl EventProcessor {
        }
    }

-    fn xinput2_raw_key_input<F>(&mut self, xev: &XIRawEvent, state: ElementState, mut callback: F)
-    where
-        F: FnMut(&RootAEL, Event),
+    fn xinput2_raw_key_input<T: 'static, F>(
+        &mut self,
+        xev: &XIRawEvent,
+        state: ElementState,
+        mut callback: F,
+    ) where
+        F: FnMut(&RootAEL, Event<T>),
    {
        let wt = Self::window_target(&self.target);

@@ -1470,9 +1511,9 @@ impl EventProcessor {
        });
    }

-    fn xinput2_hierarchy_changed<F>(&mut self, xev: &XIHierarchyEvent, mut callback: F)
+    fn xinput2_hierarchy_changed<T: 'static, F>(&mut self, xev: &XIHierarchyEvent, mut callback: F)
    where
-        F: FnMut(&RootAEL, Event),
+        F: FnMut(&RootAEL, Event<T>),
    {
        let wt = Self::window_target(&self.target);

@@ -1497,9 +1538,9 @@ impl EventProcessor {
        }
    }

-    fn xkb_event<F>(&mut self, xev: &XkbAnyEvent, mut callback: F)
+    fn xkb_event<T: 'static, F>(&mut self, xev: &XkbAnyEvent, mut callback: F)
    where
-        F: FnMut(&RootAEL, Event),
+        F: FnMut(&RootAEL, Event<T>),
    {
        let wt = Self::window_target(&self.target);
        match xev.xkb_type {
@@ -1576,14 +1617,14 @@ impl EventProcessor {
        }
    }

-    pub(crate) fn update_mods_from_xinput2_event<F>(
+    pub fn update_mods_from_xinput2_event<T: 'static, F>(
        &mut self,
        mods: &XIModifierState,
        group: &XIModifierState,
        force: bool,
        mut callback: F,
    ) where
-        F: FnMut(&RootAEL, Event),
+        F: FnMut(&RootAEL, Event<T>),
    {
        if let Some(state) = self.xkb_context.state_mut() {
            state.update_modifiers(
@@ -1607,9 +1648,12 @@ impl EventProcessor {
        }
    }

-    fn update_mods_from_query<F>(&mut self, window_id: crate::window::WindowId, mut callback: F)
-    where
-        F: FnMut(&RootAEL, Event),
+    fn update_mods_from_query<T: 'static, F>(
+        &mut self,
+        window_id: crate::window::WindowId,
+        mut callback: F,
+    ) where
+        F: FnMut(&RootAEL, Event<T>),
    {
        let wt = Self::window_target(&self.target);

@@ -1638,13 +1682,13 @@ impl EventProcessor {
        self.send_modifiers(window_id, mods.into(), true, &mut callback)
    }

-    pub(crate) fn update_mods_from_core_event<F>(
+    pub fn update_mods_from_core_event<T: 'static, F>(
        &mut self,
        window_id: crate::window::WindowId,
        state: u16,
        mut callback: F,
    ) where
-        F: FnMut(&RootAEL, Event),
+        F: FnMut(&RootAEL, Event<T>),
    {
        let xkb_mask = self.xkb_mod_mask_from_core(state);
        let xkb_state = match self.xkb_context.state_mut() {
@@ -1717,7 +1761,7 @@ impl EventProcessor {
    ///
    /// The event won't be sent when the `modifiers` match the previously `sent` modifiers value,
    /// unless `force` is passed. The `force` should be passed when the active window changes.
-    fn send_modifiers<F: FnMut(&RootAEL, Event)>(
+    fn send_modifiers<T: 'static, F: FnMut(&RootAEL, Event<T>)>(
        &self,
        window_id: crate::window::WindowId,
        modifiers: ModifiersState,
@@ -1735,14 +1779,14 @@ impl EventProcessor {
        }
    }

-    fn handle_pressed_keys<F>(
+    fn handle_pressed_keys<T: 'static, F>(
        target: &RootAEL,
        window_id: crate::window::WindowId,
        state: ElementState,
        xkb_context: &mut Context,
        callback: &mut F,
    ) where
-        F: FnMut(&RootAEL, Event),
+        F: FnMut(&RootAEL, Event<T>),
    {
        let device_id = mkdid(util::VIRTUAL_CORE_KEYBOARD);

@@ -1777,9 +1821,9 @@ impl EventProcessor {
        }
    }

-    fn process_dpi_change<F>(&self, callback: &mut F)
+    fn process_dpi_change<T: 'static, F>(&self, callback: &mut F)
    where
-        F: FnMut(&RootAEL, Event),
+        F: FnMut(&RootAEL, Event<T>),
    {
        let wt = Self::window_target(&self.target);
        wt.xconn.reload_database().expect("failed to reload Xft database");
--- a/src/platform_impl/linux/x11/ime/mod.rs
+++ b/src/platform_impl/linux/x11/ime/mod.rs
@@ -226,6 +226,16 @@ impl Ime {
        // Create new context supporting IME input.
        let _ = self.create_context(window, allowed);
    }
+
+    pub fn is_ime_allowed(&self, window: ffi::Window) -> bool {
+        if self.is_destroyed() {
+            false
+        } else if let Some(Some(context)) = self.inner.contexts.get(&window) {
+            context.is_allowed()
+        } else {
+            false
+        }
+    }
 }

 impl Drop for Ime {
--- a/src/platform_impl/linux/x11/mod.rs
+++ b/src/platform_impl/linux/x11/mod.rs
@@ -9,7 +9,7 @@ use std::os::unix::io::{AsFd, AsRawFd, BorrowedFd, RawFd};
 use std::sync::mpsc::{self, Receiver, Sender, TryRecvError};
 use std::sync::{Arc, Weak};
 use std::time::{Duration, Instant};
-use std::{fmt, mem, ptr, slice, str};
+use std::{fmt, ptr, slice, str};

 use calloop::generic::Generic;
 use calloop::ping::Ping;
@@ -25,10 +25,9 @@ use x11rb::protocol::xproto::{self, ConnectionExt as _};
 use x11rb::x11_utils::X11Error as LogicalError;
 use x11rb::xcb_ffi::ReplyOrIdError;

-use crate::application::ApplicationHandler;
 use crate::error::{EventLoopError, OsError as RootOsError};
 use crate::event::{Event, StartCause, WindowEvent};
-use crate::event_loop::{ActiveEventLoop as RootAEL, ControlFlow, DeviceEvents};
+use crate::event_loop::{ActiveEventLoop as RootAEL, ControlFlow, DeviceEvents, EventLoopClosed};
 use crate::platform::pump_events::PumpStatus;
 use crate::platform_impl::common::xkb::Context;
 use crate::platform_impl::platform::{min_timeout, WindowId};
@@ -81,11 +80,12 @@ impl<T> Clone for WakeSender<T> {
 }

 impl<T> WakeSender<T> {
-    pub fn send(&self, t: T) {
-        let res = self.sender.send(t);
+    pub fn send(&self, t: T) -> Result<(), EventLoopClosed<T>> {
+        let res = self.sender.send(t).map_err(|e| EventLoopClosed(e.0));
        if res.is_ok() {
            self.waker.ping();
        }
+        res
    }
 }

@@ -140,13 +140,15 @@ pub struct ActiveEventLoop {
    device_events: Cell<DeviceEvents>,
 }

-pub struct EventLoop {
+pub struct EventLoop<T: 'static> {
    loop_running: bool,
    event_loop: Loop<'static, EventLoopState>,
+    waker: calloop::ping::Ping,
    event_processor: EventProcessor,
    redraw_receiver: PeekableReceiver<WindowId>,
+    user_receiver: PeekableReceiver<T>,
    activation_receiver: PeekableReceiver<ActivationToken>,
-    event_loop_proxy: EventLoopProxy,
+    user_sender: Sender<T>,

    /// The current state of the event loop.
    state: EventLoopState,
@@ -157,13 +159,20 @@ type ActivationToken = (WindowId, crate::event_loop::AsyncRequestSerial);
 struct EventLoopState {
    /// The latest readiness state for the x11 file descriptor
    x11_readiness: Readiness,
-
-    /// User requested a wake up.
-    proxy_wake_up: bool,
 }

-impl EventLoop {
-    pub(crate) fn new(xconn: Arc<XConnection>) -> EventLoop {
+pub struct EventLoopProxy<T: 'static> {
+    user_sender: WakeSender<T>,
+}
+
+impl<T: 'static> Clone for EventLoopProxy<T> {
+    fn clone(&self) -> Self {
+        EventLoopProxy { user_sender: self.user_sender.clone() }
+    }
+}
+
+impl<T: 'static> EventLoop<T> {
+    pub(crate) fn new(xconn: Arc<XConnection>) -> EventLoop<T> {
        let root = xconn.default_root().root;
        let atoms = xconn.atoms();

@@ -267,16 +276,7 @@ impl EventLoop {
        let (activation_token_sender, activation_token_channel) = mpsc::channel();

        // Create a channel for sending user events.
-        let (user_waker, user_waker_source) =
-            calloop::ping::make_ping().expect("Failed to create user event loop waker.");
-        event_loop
-            .handle()
-            .insert_source(user_waker_source, move |_, _, state| {
-                // No extra handling is required, we just need to wake-up.
-                state.proxy_wake_up = true;
-            })
-            .expect("Failed to register the event loop waker source");
-        let event_loop_proxy = EventLoopProxy::new(user_waker);
+        let (user_sender, user_channel) = mpsc::channel();

        let xkb_context =
            Context::from_x11_xkb(xconn.xcb_connection().get_raw_xcb_connection()).unwrap();
@@ -357,32 +357,32 @@ impl EventLoop {
        EventLoop {
            loop_running: false,
            event_loop,
+            waker,
            event_processor,
            redraw_receiver: PeekableReceiver::from_recv(redraw_channel),
            activation_receiver: PeekableReceiver::from_recv(activation_token_channel),
-            event_loop_proxy,
-            state: EventLoopState { x11_readiness: Readiness::EMPTY, proxy_wake_up: false },
+            user_receiver: PeekableReceiver::from_recv(user_channel),
+            user_sender,
+            state: EventLoopState { x11_readiness: Readiness::EMPTY },
        }
    }

-    pub fn create_proxy(&self) -> EventLoopProxy {
-        self.event_loop_proxy.clone()
+    pub fn create_proxy(&self) -> EventLoopProxy<T> {
+        EventLoopProxy {
+            user_sender: WakeSender { sender: self.user_sender.clone(), waker: self.waker.clone() },
+        }
    }

    pub(crate) fn window_target(&self) -> &RootAEL {
        &self.event_processor.target
    }

-    pub fn run_app<A: ApplicationHandler>(mut self, app: &mut A) -> Result<(), EventLoopError> {
-        self.run_app_on_demand(app)
-    }
-
-    pub fn run_app_on_demand<A: ApplicationHandler>(
-        &mut self,
-        app: &mut A,
-    ) -> Result<(), EventLoopError> {
+    pub fn run_on_demand<F>(&mut self, mut event_handler: F) -> Result<(), EventLoopError>
+    where
+        F: FnMut(Event<T>, &RootAEL),
+    {
        let exit = loop {
-            match self.pump_app_events(None, app) {
+            match self.pump_events(None, &mut event_handler) {
                PumpStatus::Exit(0) => {
                    break Ok(());
                },
@@ -407,27 +407,26 @@ impl EventLoop {
        exit
    }

-    pub fn pump_app_events<A: ApplicationHandler>(
-        &mut self,
-        timeout: Option<Duration>,
-        app: &mut A,
-    ) -> PumpStatus {
+    pub fn pump_events<F>(&mut self, timeout: Option<Duration>, mut callback: F) -> PumpStatus
+    where
+        F: FnMut(Event<T>, &RootAEL),
+    {
        if !self.loop_running {
            self.loop_running = true;

            // run the initial loop iteration
-            self.single_iteration(app, StartCause::Init);
+            self.single_iteration(&mut callback, StartCause::Init);
        }

        // Consider the possibility that the `StartCause::Init` iteration could
        // request to Exit.
        if !self.exiting() {
-            self.poll_events_with_timeout(timeout, app);
+            self.poll_events_with_timeout(timeout, &mut callback);
        }
        if let Some(code) = self.exit_code() {
            self.loop_running = false;

-            app.exiting(self.window_target());
+            callback(Event::LoopExiting, self.window_target());

            PumpStatus::Exit(code)
        } else {
@@ -437,15 +436,14 @@ impl EventLoop {

    fn has_pending(&mut self) -> bool {
        self.event_processor.poll()
-            || self.state.proxy_wake_up
+            || self.user_receiver.has_incoming()
            || self.redraw_receiver.has_incoming()
    }

-    pub fn poll_events_with_timeout<A: ApplicationHandler>(
-        &mut self,
-        mut timeout: Option<Duration>,
-        app: &mut A,
-    ) {
+    pub fn poll_events_with_timeout<F>(&mut self, mut timeout: Option<Duration>, mut callback: F)
+    where
+        F: FnMut(Event<T>, &RootAEL),
+    {
        let start = Instant::now();

        let has_pending = self.has_pending();
@@ -503,20 +501,23 @@ impl EventLoop {
            return;
        }

-        self.single_iteration(app, cause);
+        self.single_iteration(&mut callback, cause);
    }

-    fn single_iteration<A: ApplicationHandler>(&mut self, app: &mut A, cause: StartCause) {
-        app.new_events(&self.event_processor.target, cause);
+    fn single_iteration<F>(&mut self, callback: &mut F, cause: StartCause)
+    where
+        F: FnMut(Event<T>, &RootAEL),
+    {
+        callback(Event::NewEvents(cause), &self.event_processor.target);

        // NB: For consistency all platforms must emit a 'resumed' event even though X11
        // applications don't themselves have a formal suspend/resume lifecycle.
        if cause == StartCause::Init {
-            app.resumed(&self.event_processor.target)
+            callback(Event::Resumed, &self.event_processor.target);
        }

        // Process all pending events
-        self.drain_events(app);
+        self.drain_events(callback);

        // Empty activation tokens.
        while let Ok((window_id, serial)) = self.activation_receiver.try_recv() {
@@ -526,12 +527,14 @@ impl EventLoop {

            match token {
                Some(Ok(token)) => {
-                    let window_id = crate::window::WindowId(window_id);
-                    let event = WindowEvent::ActivationTokenDone {
-                        serial,
-                        token: crate::window::ActivationToken::_new(token),
+                    let event = Event::WindowEvent {
+                        window_id: crate::window::WindowId(window_id),
+                        event: WindowEvent::ActivationTokenDone {
+                            serial,
+                            token: crate::window::ActivationToken::_new(token),
+                        },
                    };
-                    app.window_event(&self.event_processor.target, window_id, event);
+                    callback(event, &self.event_processor.target)
                },
                Some(Err(e)) => {
                    tracing::error!("Failed to get activation token: {}", e);
@@ -541,8 +544,10 @@ impl EventLoop {
        }

        // Empty the user event buffer
-        if mem::take(&mut self.state.proxy_wake_up) {
-            app.proxy_wake_up(&self.event_processor.target);
+        {
+            while let Ok(event) = self.user_receiver.try_recv() {
+                callback(Event::UserEvent(event), &self.event_processor.target);
+            }
        }

        // Empty the redraw requests
@@ -555,41 +560,37 @@ impl EventLoop {

            for window_id in windows {
                let window_id = crate::window::WindowId(window_id);
-                app.window_event(
+                callback(
+                    Event::WindowEvent { window_id, event: WindowEvent::RedrawRequested },
                    &self.event_processor.target,
-                    window_id,
-                    WindowEvent::RedrawRequested,
                );
            }
        }

        // This is always the last event we dispatch before poll again
-        app.about_to_wait(&self.event_processor.target);
+        {
+            callback(Event::AboutToWait, &self.event_processor.target);
+        }
    }

-    fn drain_events<A: ApplicationHandler>(&mut self, app: &mut A) {
+    fn drain_events<F>(&mut self, callback: &mut F)
+    where
+        F: FnMut(Event<T>, &RootAEL),
+    {
        let mut xev = MaybeUninit::uninit();

        while unsafe { self.event_processor.poll_one_event(xev.as_mut_ptr()) } {
            let mut xev = unsafe { xev.assume_init() };
-            self.event_processor.process_event(&mut xev, |window_target, event: Event| {
+            self.event_processor.process_event(&mut xev, |window_target, event| {
                if let Event::WindowEvent {
                    window_id: crate::window::WindowId(wid),
                    event: WindowEvent::RedrawRequested,
                } = event
                {
                    let window_target = EventProcessor::window_target(window_target);
-                    window_target.redraw_sender.send(wid);
+                    window_target.redraw_sender.send(wid).unwrap();
                } else {
-                    match event {
-                        Event::WindowEvent { window_id, event } => {
-                            app.window_event(window_target, window_id, event)
-                        },
-                        Event::DeviceEvent { device_id, event } => {
-                            app.device_event(window_target, device_id, event)
-                        },
-                        _ => unreachable!("event which is neither device nor window event."),
-                    }
+                    callback(event, window_target);
                }
            });
        }
@@ -616,13 +617,13 @@ impl EventLoop {
    }
 }

-impl AsFd for EventLoop {
+impl<T> AsFd for EventLoop<T> {
    fn as_fd(&self) -> BorrowedFd<'_> {
        self.event_loop.as_fd()
    }
 }

-impl AsRawFd for EventLoop {
+impl<T> AsRawFd for EventLoop<T> {
    fn as_raw_fd(&self) -> RawFd {
        self.event_loop.as_raw_fd()
    }
@@ -722,9 +723,9 @@ impl ActiveEventLoop {
    }
 }

-impl EventLoopProxy {
-    pub fn wake_up(&self) {
-        self.ping.ping();
+impl<T: 'static> EventLoopProxy<T> {
+    pub fn send_event(&self, event: T) -> Result<(), EventLoopClosed<T>> {
+        self.user_sender.send(event).map_err(|e| EventLoopClosed(e.0))
    }
 }

@@ -750,14 +751,14 @@ impl<'a> DeviceInfo<'a> {
    }
 }

-impl<'a> Drop for DeviceInfo<'a> {
+impl Drop for DeviceInfo<'_> {
    fn drop(&mut self) {
        assert!(!self.info.is_null());
        unsafe { (self.xconn.xinput2.XIFreeDeviceInfo)(self.info as *mut _) };
    }
 }

-impl<'a> Deref for DeviceInfo<'a> {
+impl Deref for DeviceInfo<'_> {
    type Target = [ffi::XIDeviceInfo];

    fn deref(&self) -> &Self::Target {
@@ -770,7 +771,7 @@ pub struct DeviceId(xinput::DeviceId);

 impl DeviceId {
    #[allow(unused)]
-    pub const unsafe fn dummy() -> Self {
+    pub const fn dummy() -> Self {
        DeviceId(0)
    }
 }
@@ -808,17 +809,6 @@ impl Drop for Window {
    }
 }

-#[derive(Clone)]
-pub struct EventLoopProxy {
-    ping: Ping,
-}
-
-impl EventLoopProxy {
-    fn new(ping: Ping) -> Self {
-        Self { ping }
-    }
-}
-
 /// Generic sum error type for X11 errors.
 #[derive(Debug)]
 pub enum X11Error {
@@ -967,7 +957,7 @@ trait CookieResultExt {
    fn expect_then_ignore_error(self, msg: &str);
 }

-impl<'a, E: fmt::Debug> CookieResultExt for Result<VoidCookie<'a>, E> {
+impl<E: fmt::Debug> CookieResultExt for Result<VoidCookie<'_>, E> {
    fn expect_then_ignore_error(self, msg: &str) {
        self.expect(msg).ignore_error()
    }
--- a/src/platform_impl/linux/x11/monitor.rs
+++ b/src/platform_impl/linux/x11/monitor.rs
@@ -301,7 +301,7 @@ impl XConnection {
        let info = self
            .xcb_connection()
            .extension_information(randr::X11_EXTENSION_NAME)?
-            .ok_or_else(|| X11Error::MissingExtension(randr::X11_EXTENSION_NAME))?;
+            .ok_or(X11Error::MissingExtension(randr::X11_EXTENSION_NAME))?;

        // Select input data.
        let event_mask =
--- a/src/platform_impl/linux/x11/util/memory.rs
+++ b/src/platform_impl/linux/x11/util/memory.rs
@@ -19,7 +19,7 @@ impl<'a, T> XSmartPointer<'a, T> {
    }
 }

-impl<'a, T> Deref for XSmartPointer<'a, T> {
+impl<T> Deref for XSmartPointer<'_, T> {
    type Target = T;

    fn deref(&self) -> &T {
@@ -27,13 +27,13 @@ impl<'a, T> Deref for XSmartPointer<'a, T> {
    }
 }

-impl<'a, T> DerefMut for XSmartPointer<'a, T> {
+impl<T> DerefMut for XSmartPointer<'_, T> {
    fn deref_mut(&mut self) -> &mut T {
        unsafe { &mut *self.ptr }
    }
 }

-impl<'a, T> Drop for XSmartPointer<'a, T> {
+impl<T> Drop for XSmartPointer<'_, T> {
    fn drop(&mut self) {
        unsafe {
            (self.xconn.xlib.XFree)(self.ptr as *mut _);
--- a/src/platform_impl/linux/x11/window.rs
+++ b/src/platform_impl/linux/x11/window.rs
@@ -144,12 +144,26 @@ impl UnownedWindow {
    ) -> Result<UnownedWindow, RootOsError> {
        let xconn = &event_loop.xconn;
        let atoms = xconn.atoms();
+
+        let screen_id = match window_attrs.platform_specific.x11.screen_id {
+            Some(id) => id,
+            None => xconn.default_screen_index() as c_int,
+        };
+
+        let screen = {
+            let screen_id_usize = usize::try_from(screen_id)
+                .map_err(|_| os_error!(OsError::Misc("screen id must be non-negative")))?;
+            xconn.xcb_connection().setup().roots.get(screen_id_usize).ok_or(os_error!(
+                OsError::Misc("requested screen id not present in server's response")
+            ))?
+        };
+
        #[cfg(feature = "rwh_06")]
        let root = match window_attrs.parent_window.as_ref().map(|handle| handle.0) {
            Some(rwh_06::RawWindowHandle::Xlib(handle)) => handle.window as xproto::Window,
            Some(rwh_06::RawWindowHandle::Xcb(handle)) => handle.window.get(),
            Some(raw) => unreachable!("Invalid raw window handle {raw:?} on X11"),
-            None => event_loop.root,
+            None => screen.root,
        };
        #[cfg(not(feature = "rwh_06"))]
        let root = event_loop.root;
@@ -207,18 +221,10 @@ impl UnownedWindow {
            dimensions
        };

-        let screen_id = match window_attrs.platform_specific.x11.screen_id {
-            Some(id) => id,
-            None => xconn.default_screen_index() as c_int,
-        };
-
-        // An iterator over all of the visuals combined with their depths.
-        let mut all_visuals = xconn
-            .xcb_connection()
-            .setup()
-            .roots
+        // An iterator over the visuals matching screen id combined with their depths.
+        let mut all_visuals = screen
+            .allowed_depths
            .iter()
-            .flat_map(|root| &root.allowed_depths)
            .flat_map(|depth| depth.visuals.iter().map(move |visual| (visual, depth.depth)));

        // creating
@@ -484,6 +490,20 @@ impl UnownedWindow {
            );
            leap!(result).ignore_error();

+            // Select XInput2 events
+            let mask = xinput::XIEventMask::MOTION
+                | xinput::XIEventMask::BUTTON_PRESS
+                | xinput::XIEventMask::BUTTON_RELEASE
+                | xinput::XIEventMask::ENTER
+                | xinput::XIEventMask::LEAVE
+                | xinput::XIEventMask::FOCUS_IN
+                | xinput::XIEventMask::FOCUS_OUT
+                | xinput::XIEventMask::TOUCH_BEGIN
+                | xinput::XIEventMask::TOUCH_UPDATE
+                | xinput::XIEventMask::TOUCH_END;
+            leap!(xconn.select_xinput_events(window.xwindow, super::ALL_MASTER_DEVICES, mask))
+                .ignore_error();
+
            // Set visibility (map window)
            if window_attrs.visible {
                leap!(xconn.xcb_connection().map_window(window.xwindow)).ignore_error();
@@ -507,20 +527,6 @@ impl UnownedWindow {
                }
            }

-            // Select XInput2 events
-            let mask = xinput::XIEventMask::MOTION
-                | xinput::XIEventMask::BUTTON_PRESS
-                | xinput::XIEventMask::BUTTON_RELEASE
-                | xinput::XIEventMask::ENTER
-                | xinput::XIEventMask::LEAVE
-                | xinput::XIEventMask::FOCUS_IN
-                | xinput::XIEventMask::FOCUS_OUT
-                | xinput::XIEventMask::TOUCH_BEGIN
-                | xinput::XIEventMask::TOUCH_UPDATE
-                | xinput::XIEventMask::TOUCH_END;
-            leap!(xconn.select_xinput_events(window.xwindow, super::ALL_MASTER_DEVICES, mask))
-                .ignore_error();
-
            // Try to create input context for the window.
            if let Some(ime) = event_loop.ime.as_ref() {
                let result = ime.borrow_mut().create_context(window.xwindow as ffi::Window, false);
@@ -876,11 +882,11 @@ impl UnownedWindow {

    /// Refresh the API for the given monitor.
    #[inline]
-    pub(super) fn refresh_dpi_for_monitor(
+    pub(super) fn refresh_dpi_for_monitor<T: 'static>(
        &self,
        new_monitor: &X11MonitorHandle,
        maybe_prev_scale_factor: Option<f64>,
-        mut callback: impl FnMut(Event),
+        mut callback: impl FnMut(Event<T>),
    ) {
        // Check if the self is on this monitor
        let monitor = self.shared_state_lock().last_monitor.clone();
@@ -1805,7 +1811,9 @@ impl UnownedWindow {
    #[inline]
    pub fn request_activation_token(&self) -> Result<AsyncRequestSerial, NotSupportedError> {
        let serial = AsyncRequestSerial::get();
-        self.activation_sender.send((self.id(), serial));
+        self.activation_sender
+            .send((self.id(), serial))
+            .expect("activation token channel should never be closed");
        Ok(serial)
    }

@@ -1816,7 +1824,7 @@ impl UnownedWindow {

    #[inline]
    pub fn request_redraw(&self) {
-        self.redraw_sender.send(WindowId(self.xwindow as _));
+        self.redraw_sender.send(WindowId(self.xwindow as _)).unwrap();
    }

    #[inline]
--- a/src/platform_impl/apple/appkit/app.rs
+++ b/src/platform_impl/apple/appkit/app.rs
@@ -5,7 +5,6 @@ use objc2_app_kit::{NSApplication, NSEvent, NSEventModifierFlags, NSEventType, N
 use objc2_foundation::{MainThreadMarker, NSObject};

 use super::app_state::ApplicationDelegate;
-use super::DEVICE_ID;
 use crate::event::{DeviceEvent, ElementState};

 declare_class!(
@@ -58,47 +57,29 @@ fn maybe_dispatch_device_event(delegate: &ApplicationDelegate, event: &NSEvent)
            let delta_y = unsafe { event.deltaY() } as f64;

            if delta_x != 0.0 {
-                delegate.maybe_queue_with_handler(move |app, event_loop| {
-                    app.device_event(event_loop, DEVICE_ID, DeviceEvent::Motion {
-                        axis: 0,
-                        value: delta_x,
-                    });
-                });
+                delegate.maybe_queue_device_event(DeviceEvent::Motion { axis: 0, value: delta_x });
            }

            if delta_y != 0.0 {
-                delegate.maybe_queue_with_handler(move |app, event_loop| {
-                    app.device_event(event_loop, DEVICE_ID, DeviceEvent::Motion {
-                        axis: 1,
-                        value: delta_y,
-                    });
-                })
+                delegate.maybe_queue_device_event(DeviceEvent::Motion { axis: 1, value: delta_y })
            }

            if delta_x != 0.0 || delta_y != 0.0 {
-                delegate.maybe_queue_with_handler(move |app, event_loop| {
-                    app.device_event(event_loop, DEVICE_ID, DeviceEvent::MouseMotion {
-                        delta: (delta_x, delta_y),
-                    });
+                delegate.maybe_queue_device_event(DeviceEvent::MouseMotion {
+                    delta: (delta_x, delta_y),
                });
            }
        },
        NSEventType::LeftMouseDown | NSEventType::RightMouseDown | NSEventType::OtherMouseDown => {
-            let button = unsafe { event.buttonNumber() } as u32;
-            delegate.maybe_queue_with_handler(move |app, event_loop| {
-                app.device_event(event_loop, DEVICE_ID, DeviceEvent::Button {
-                    button,
-                    state: ElementState::Pressed,
-                });
+            delegate.maybe_queue_device_event(DeviceEvent::Button {
+                button: unsafe { event.buttonNumber() } as u32,
+                state: ElementState::Pressed,
            });
        },
        NSEventType::LeftMouseUp | NSEventType::RightMouseUp | NSEventType::OtherMouseUp => {
-            let button = unsafe { event.buttonNumber() } as u32;
-            delegate.maybe_queue_with_handler(move |app, event_loop| {
-                app.device_event(event_loop, DEVICE_ID, DeviceEvent::Button {
-                    button,
-                    state: ElementState::Released,
-                });
+            delegate.maybe_queue_device_event(DeviceEvent::Button {
+                button: unsafe { event.buttonNumber() } as u32,
+                state: ElementState::Released,
            });
        },
        _ => (),
--- a/src/platform_impl/apple/appkit/app_state.rs
+++ b/src/platform_impl/apple/appkit/app_state.rs
@@ -1,32 +1,29 @@
 use std::cell::{Cell, RefCell};
 use std::mem;
 use std::rc::Weak;
-use std::sync::atomic::{AtomicBool, Ordering as AtomicOrdering};
-use std::sync::Arc;
 use std::time::Instant;

 use objc2::rc::Retained;
 use objc2::{declare_class, msg_send_id, mutability, ClassType, DeclaredClass};
-use objc2_app_kit::{NSApplication, NSApplicationActivationPolicy, NSApplicationDelegate};
+use objc2_app_kit::{
+    NSApplication, NSApplicationActivationPolicy, NSApplicationDelegate, NSRunningApplication,
+};
 use objc2_foundation::{MainThreadMarker, NSNotification, NSObject, NSObjectProtocol};

-use crate::application::ApplicationHandler;
-use crate::event::{StartCause, WindowEvent};
-use crate::event_loop::{ActiveEventLoop as RootActiveEventLoop, ControlFlow};
-use crate::window::WindowId as RootWindowId;
-
 use super::event_handler::EventHandler;
 use super::event_loop::{stop_app_immediately, ActiveEventLoop, PanicInfo};
 use super::observer::{EventLoopWaker, RunLoop};
-use super::{menu, WindowId};
+use super::{menu, WindowId, DEVICE_ID};
+use crate::event::{DeviceEvent, Event, StartCause, WindowEvent};
+use crate::event_loop::{ActiveEventLoop as RootActiveEventLoop, ControlFlow};
+use crate::window::WindowId as RootWindowId;

 #[derive(Debug)]
 pub(super) struct AppState {
-    activation_policy: NSApplicationActivationPolicy,
+    activation_policy: Option<NSApplicationActivationPolicy>,
    default_menu: bool,
    activate_ignoring_other_apps: bool,
    run_loop: RunLoop,
-    proxy_wake_up: Arc<AtomicBool>,
    event_handler: EventHandler,
    stop_on_launch: Cell<bool>,
    stop_before_wait: Cell<bool>,
@@ -79,14 +76,12 @@ declare_class!(
 impl ApplicationDelegate {
    pub(super) fn new(
        mtm: MainThreadMarker,
-        activation_policy: NSApplicationActivationPolicy,
-        proxy_wake_up: Arc<AtomicBool>,
+        activation_policy: Option<NSApplicationActivationPolicy>,
        default_menu: bool,
        activate_ignoring_other_apps: bool,
    ) -> Retained<Self> {
        let this = mtm.alloc().set_ivars(AppState {
            activation_policy,
-            proxy_wake_up,
            default_menu,
            activate_ignoring_other_apps,
            run_loop: RunLoop::main(mtm),
@@ -118,7 +113,24 @@ impl ApplicationDelegate {
        // We need to delay setting the activation policy and activating the app
        // until `applicationDidFinishLaunching` has been called. Otherwise the
        // menu bar is initially unresponsive on macOS 10.15.
-        app.setActivationPolicy(self.ivars().activation_policy);
+        // If no activation policy is explicitly provided, do not set it at all
+        // to allow the package manifest to define behavior via LSUIElement.
+        if let Some(activation_policy) = self.ivars().activation_policy {
+            app.setActivationPolicy(activation_policy);
+        } else {
+            // If no activation policy is explicitly provided, and the application
+            // is bundled, do not set the activation policy at all, to allow the
+            // package manifest to define the behavior via LSUIElement.
+            //
+            // See:
+            // - https://github.com/rust-windowing/winit/issues/261
+            // - https://github.com/rust-windowing/winit/issues/3958
+            let is_bundled =
+                unsafe { NSRunningApplication::currentApplication().bundleIdentifier().is_some() };
+            if !is_bundled {
+                app.setActivationPolicy(NSApplicationActivationPolicy::Regular);
+            }
+        }

        window_activation_hack(&app);
        #[allow(deprecated)]
@@ -173,7 +185,7 @@ impl ApplicationDelegate {
    /// of the given closure.
    pub fn set_event_handler<R>(
        &self,
-        handler: &mut dyn ApplicationHandler,
+        handler: impl FnMut(Event<HandlePendingUserEvents>, &RootActiveEventLoop),
        closure: impl FnOnce() -> R,
    ) -> R {
        self.ivars().event_handler.set(handler, closure)
@@ -207,9 +219,7 @@ impl ApplicationDelegate {
    /// NOTE: that if the `NSApplication` has been launched then that state is preserved,
    /// and we won't need to re-launch the app if subsequent EventLoops are run.
    pub fn internal_exit(&self) {
-        self.with_handler(|app, event_loop| {
-            app.exiting(event_loop);
-        });
+        self.handle_event(Event::LoopExiting);

        self.set_is_running(false);
        self.set_stop_on_redraw(false);
@@ -250,13 +260,26 @@ impl ApplicationDelegate {
        self.ivars().control_flow.get()
    }

+    pub fn maybe_queue_window_event(&self, window_id: WindowId, event: WindowEvent) {
+        self.maybe_queue_event(Event::WindowEvent { window_id: RootWindowId(window_id), event });
+    }
+
+    pub fn handle_window_event(&self, window_id: WindowId, event: WindowEvent) {
+        self.handle_event(Event::WindowEvent { window_id: RootWindowId(window_id), event });
+    }
+
+    pub fn maybe_queue_device_event(&self, event: DeviceEvent) {
+        self.maybe_queue_event(Event::DeviceEvent { device_id: DEVICE_ID, event });
+    }
+
    pub fn handle_redraw(&self, window_id: WindowId) {
        let mtm = MainThreadMarker::from(self);
        // Redraw request might come out of order from the OS.
        // -> Don't go back into the event handler when our callstack originates from there
        if !self.ivars().event_handler.in_use() {
-            self.with_handler(|app, event_loop| {
-                app.window_event(event_loop, RootWindowId(window_id), WindowEvent::RedrawRequested);
+            self.handle_event(Event::WindowEvent {
+                window_id: RootWindowId(window_id),
+                event: WindowEvent::RedrawRequested,
            });

            // `pump_events` will request to stop immediately _after_ dispatching RedrawRequested
@@ -278,10 +301,7 @@ impl ApplicationDelegate {
    }

    #[track_caller]
-    pub fn maybe_queue_with_handler(
-        &self,
-        callback: impl FnOnce(&mut dyn ApplicationHandler, &RootActiveEventLoop) + 'static,
-    ) {
+    fn maybe_queue_event(&self, event: Event<HandlePendingUserEvents>) {
        // Most programmer actions in AppKit (e.g. change window fullscreen, set focused, etc.)
        // result in an event being queued, and applied at a later point.
        //
@@ -289,31 +309,25 @@ impl ApplicationDelegate {
        // so to make sure that we don't encounter re-entrancy issues, we first check if we're
        // currently handling another event, and if we are, we queue the event instead.
        if !self.ivars().event_handler.in_use() {
-            self.with_handler(callback);
+            self.handle_event(event);
        } else {
-            tracing::debug!("had to queue event since another is currently being handled");
+            tracing::debug!(?event, "had to queue event since another is currently being handled");
            let this = self.retain();
-            self.ivars().run_loop.queue_closure(move || {
-                this.with_handler(callback);
-            });
+            self.ivars().run_loop.queue_closure(move || this.handle_event(event));
        }
    }

    #[track_caller]
-    fn with_handler(
-        &self,
-        callback: impl FnOnce(&mut dyn ApplicationHandler, &RootActiveEventLoop),
-    ) {
-        let event_loop = ActiveEventLoop::new_root(self.retain());
-        self.ivars().event_handler.handle(callback, &event_loop);
+    fn handle_event(&self, event: Event<HandlePendingUserEvents>) {
+        self.ivars().event_handler.handle_event(event, &ActiveEventLoop::new_root(self.retain()))
    }

    /// dispatch `NewEvents(Init)` + `Resumed`
    pub fn dispatch_init_events(&self) {
-        self.with_handler(|app, event_loop| app.new_events(event_loop, StartCause::Init));
+        self.handle_event(Event::NewEvents(StartCause::Init));
        // NB: For consistency all platforms must emit a 'resumed' event even though macOS
        // applications don't themselves have a formal suspend/resume lifecycle.
-        self.with_handler(|app, event_loop| app.resumed(event_loop));
+        self.handle_event(Event::Resumed);
    }

    // Called by RunLoopObserver after finishing waiting for new events
@@ -323,7 +337,8 @@ impl ApplicationDelegate {
            .upgrade()
            .expect("The panic info must exist here. This failure indicates a developer error.");

-        if panic_info.is_panicking() || !self.is_running() {
+        // Return when in event handler due to https://github.com/rust-windowing/winit/issues/1779
+        if panic_info.is_panicking() || !self.ivars().event_handler.ready() || !self.is_running() {
            return;
        }

@@ -345,7 +360,7 @@ impl ApplicationDelegate {
            },
        };

-        self.with_handler(|app, event_loop| app.new_events(event_loop, cause));
+        self.handle_event(Event::NewEvents(cause));
    }

    // Called by RunLoopObserver before waiting for new events
@@ -355,23 +370,24 @@ impl ApplicationDelegate {
            .upgrade()
            .expect("The panic info must exist here. This failure indicates a developer error.");

-        if panic_info.is_panicking() || !self.is_running() {
+        // Return when in event handler due to https://github.com/rust-windowing/winit/issues/1779
+        // XXX: how does it make sense that `event_handler.ready()` can ever return `false` here if
+        // we're about to return to the `CFRunLoop` to poll for new events?
+        if panic_info.is_panicking() || !self.ivars().event_handler.ready() || !self.is_running() {
            return;
        }

-        if self.ivars().proxy_wake_up.swap(false, AtomicOrdering::Relaxed) {
-            self.with_handler(|app, event_loop| app.proxy_wake_up(event_loop));
-        }
+        self.handle_event(Event::UserEvent(HandlePendingUserEvents));

        let redraw = mem::take(&mut *self.ivars().pending_redraw.borrow_mut());
        for window_id in redraw {
-            self.with_handler(|app, event_loop| {
-                app.window_event(event_loop, RootWindowId(window_id), WindowEvent::RedrawRequested);
+            self.handle_event(Event::WindowEvent {
+                window_id: RootWindowId(window_id),
+                event: WindowEvent::RedrawRequested,
            });
        }
-        self.with_handler(|app, event_loop| {
-            app.about_to_wait(event_loop);
-        });
+
+        self.handle_event(Event::AboutToWait);

        if self.exiting() {
            let app = NSApplication::sharedApplication(mtm);
@@ -393,6 +409,9 @@ impl ApplicationDelegate {
    }
 }

+#[derive(Debug)]
+pub(crate) struct HandlePendingUserEvents;
+
 /// Returns the minimum `Option<Instant>`, taking into account that `None`
 /// equates to an infinite timeout, not a zero timeout (so can't just use
 /// `Option::min`)
--- a/src/platform_impl/apple/appkit/cursor.rs
+++ b/src/platform_impl/apple/appkit/cursor.rs
@@ -4,7 +4,7 @@ use std::sync::OnceLock;

 use objc2::rc::Retained;
 use objc2::runtime::Sel;
-use objc2::{msg_send_id, sel, ClassType};
+use objc2::{msg_send, msg_send_id, sel, ClassType};
 use objc2_app_kit::{NSBitmapImageRep, NSCursor, NSDeviceRGBColorSpace, NSImage};
 use objc2_foundation::{
    ns_string, NSData, NSDictionary, NSNumber, NSObject, NSObjectProtocol, NSPoint, NSSize,
@@ -66,7 +66,7 @@ pub(crate) fn default_cursor() -> Retained<NSCursor> {

 unsafe fn try_cursor_from_selector(sel: Sel) -> Option<Retained<NSCursor>> {
    let cls = NSCursor::class();
-    if cls.responds_to(sel) {
+    if msg_send![cls, respondsToSelector: sel] {
        let cursor: Retained<NSCursor> = unsafe { msg_send_id![cls, performSelector: sel] };
        Some(cursor)
    } else {
--- a/src/platform_impl/apple/appkit/event.rs
+++ b/src/platform_impl/apple/appkit/event.rs
@@ -7,12 +7,12 @@ use objc2_app_kit::{NSEvent, NSEventModifierFlags, NSEventSubtype, NSEventType};
 use objc2_foundation::{run_on_main, NSPoint};
 use smol_str::SmolStr;

-use super::ffi;
 use crate::event::{ElementState, KeyEvent, Modifiers};
 use crate::keyboard::{
    Key, KeyCode, KeyLocation, ModifiersKeys, ModifiersState, NamedKey, NativeKey, NativeKeyCode,
    PhysicalKey,
 };
+use crate::platform_impl::platform::ffi;

 #[derive(Debug, Clone, PartialEq, Eq, Hash)]
 pub struct KeyEventExtra {
@@ -92,17 +92,12 @@ fn get_logical_key_char(ns_event: &NSEvent, modifierless_chars: &str) -> Key {
 /// Create `KeyEvent` for the given `NSEvent`.
 ///
 /// This function shouldn't be called when the IME input is in process.
-pub(crate) fn create_key_event(
-    ns_event: &NSEvent,
-    is_press: bool,
-    is_repeat: bool,
-    key_override: Option<PhysicalKey>,
-) -> KeyEvent {
+pub(crate) fn create_key_event(ns_event: &NSEvent, is_press: bool, is_repeat: bool) -> KeyEvent {
    use ElementState::{Pressed, Released};
    let state = if is_press { Pressed } else { Released };

    let scancode = unsafe { ns_event.keyCode() };
-    let mut physical_key = key_override.unwrap_or_else(|| scancode_to_physicalkey(scancode as u32));
+    let mut physical_key = scancode_to_physicalkey(scancode as u32);

    // NOTE: The logical key should heed both SHIFT and ALT if possible.
    // For instance:
@@ -111,20 +106,15 @@ pub(crate) fn create_key_event(
    // * Pressing CTRL SHIFT A: logical key should also be "A"
    // This is not easy to tease out of `NSEvent`, but we do our best.

-    let text_with_all_modifiers: Option<SmolStr> = if key_override.is_some() {
+    let characters = unsafe { ns_event.characters() }.map(|s| s.to_string()).unwrap_or_default();
+    let text_with_all_modifiers = if characters.is_empty() {
        None
    } else {
-        let characters =
-            unsafe { ns_event.characters() }.map(|s| s.to_string()).unwrap_or_default();
-        if characters.is_empty() {
-            None
-        } else {
-            if matches!(physical_key, PhysicalKey::Unidentified(_)) {
-                // The key may be one of the funky function keys
-                physical_key = extra_function_key_to_code(scancode, &characters);
-            }
-            Some(SmolStr::new(characters))
+        if matches!(physical_key, PhysicalKey::Unidentified(_)) {
+            // The key may be one of the funky function keys
+            physical_key = extra_function_key_to_code(scancode, &characters);
        }
+        Some(SmolStr::new(characters))
    };

    let key_from_code = code_to_key(physical_key, scancode);
--- a/src/platform_impl/apple/appkit/event_handler.rs
+++ b/src/platform_impl/apple/appkit/event_handler.rs
@@ -1,31 +1,32 @@
 use std::cell::RefCell;
 use std::{fmt, mem};

-use crate::application::ApplicationHandler;
+use super::app_state::HandlePendingUserEvents;
+use crate::event::Event;
 use crate::event_loop::ActiveEventLoop as RootActiveEventLoop;

-#[derive(Default)]
+struct EventHandlerData {
+    #[allow(clippy::type_complexity)]
+    handler: Box<dyn FnMut(Event<HandlePendingUserEvents>, &RootActiveEventLoop) + 'static>,
+}
+
+impl fmt::Debug for EventHandlerData {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        f.debug_struct("EventHandlerData").finish_non_exhaustive()
+    }
+}
+
+#[derive(Debug)]
 pub(crate) struct EventHandler {
    /// This can be in the following states:
    /// - Not registered by the event loop (None).
    /// - Present (Some(handler)).
    /// - Currently executing the handler / in use (RefCell borrowed).
-    inner: RefCell<Option<&'static mut dyn ApplicationHandler>>,
-}
-
-impl fmt::Debug for EventHandler {
-    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
-        let state = match self.inner.try_borrow().as_deref() {
-            Ok(Some(_)) => "<available>",
-            Ok(None) => "<not set>",
-            Err(_) => "<in use>",
-        };
-        f.debug_struct("EventHandler").field("state", &state).finish_non_exhaustive()
-    }
+    inner: RefCell<Option<EventHandlerData>>,
 }

 impl EventHandler {
-    pub(crate) fn new() -> Self {
+    pub(crate) const fn new() -> Self {
        Self { inner: RefCell::new(None) }
    }

@@ -36,7 +37,7 @@ impl EventHandler {
    /// from within the closure.
    pub(crate) fn set<'handler, R>(
        &self,
-        app: &'handler mut dyn ApplicationHandler,
+        handler: impl FnMut(Event<HandlePendingUserEvents>, &RootActiveEventLoop) + 'handler,
        closure: impl FnOnce() -> R,
    ) -> R {
        // SAFETY: We extend the lifetime of the handler here so that we can
@@ -47,9 +48,9 @@ impl EventHandler {
        // extended beyond `'handler`.
        let handler = unsafe {
            mem::transmute::<
-                &'handler mut dyn ApplicationHandler,
-                &'static mut dyn ApplicationHandler,
-            >(app)
+                Box<dyn FnMut(Event<HandlePendingUserEvents>, &RootActiveEventLoop) + 'handler>,
+                Box<dyn FnMut(Event<HandlePendingUserEvents>, &RootActiveEventLoop) + 'static>,
+            >(Box::new(handler))
        };

        match self.inner.try_borrow_mut().as_deref_mut() {
@@ -57,7 +58,7 @@ impl EventHandler {
                unreachable!("tried to set handler while another was already set");
            },
            Ok(data @ None) => {
-                *data = Some(handler);
+                *data = Some(EventHandlerData { handler });
            },
            Err(_) => {
                unreachable!("tried to set handler that is currently in use");
@@ -104,20 +105,24 @@ impl EventHandler {
        self.inner.try_borrow().is_err()
    }

-    pub(crate) fn handle(
+    pub(crate) fn ready(&self) -> bool {
+        matches!(self.inner.try_borrow().as_deref(), Ok(Some(_)))
+    }
+
+    pub(crate) fn handle_event(
        &self,
-        callback: impl FnOnce(&mut dyn ApplicationHandler, &RootActiveEventLoop),
+        event: Event<HandlePendingUserEvents>,
        event_loop: &RootActiveEventLoop,
    ) {
        match self.inner.try_borrow_mut().as_deref_mut() {
-            Ok(Some(user_app)) => {
+            Ok(Some(EventHandlerData { handler })) => {
                // It is important that we keep the reference borrowed here,
                // so that `in_use` can properly detect that the handler is
                // still in use.
                //
                // If the handler unwinds, the `RefMut` will ensure that the
                // handler is no longer borrowed.
-                callback(*user_app, event_loop);
+                (handler)(event, event_loop);
            },
            Ok(None) => {
                // `NSApplication`, our app delegate and this handler are all
--- a/src/platform_impl/apple/appkit/event_loop.rs
+++ b/src/platform_impl/apple/appkit/event_loop.rs
@@ -6,33 +6,34 @@ use std::os::raw::c_void;
 use std::panic::{catch_unwind, resume_unwind, RefUnwindSafe, UnwindSafe};
 use std::ptr;
 use std::rc::{Rc, Weak};
-use std::sync::atomic::{AtomicBool, Ordering as AtomicOrdering};
-use std::sync::Arc;
+use std::sync::mpsc;
 use std::time::{Duration, Instant};

 use core_foundation::base::{CFIndex, CFRelease};
 use core_foundation::runloop::{
-    kCFRunLoopDefaultMode, CFRunLoopAddSource, CFRunLoopGetMain, CFRunLoopSourceContext,
+    kCFRunLoopCommonModes, CFRunLoopAddSource, CFRunLoopGetMain, CFRunLoopSourceContext,
    CFRunLoopSourceCreate, CFRunLoopSourceRef, CFRunLoopSourceSignal, CFRunLoopWakeUp,
 };
 use objc2::rc::{autoreleasepool, Retained};
 use objc2::runtime::ProtocolObject;
-use objc2::{msg_send_id, ClassType};
+use objc2::{msg_send_id, sel, ClassType};
 use objc2_app_kit::{NSApplication, NSApplicationActivationPolicy, NSWindow};
 use objc2_foundation::{MainThreadMarker, NSObjectProtocol};

 use super::app::WinitApplication;
-use super::app_state::ApplicationDelegate;
-use super::cursor::CustomCursor;
+use super::app_state::{ApplicationDelegate, HandlePendingUserEvents};
 use super::event::dummy_event;
 use super::monitor::{self, MonitorHandle};
 use super::observer::setup_control_flow_observers;
-use crate::application::ApplicationHandler;
 use crate::error::EventLoopError;
-use crate::event_loop::{ActiveEventLoop as RootWindowTarget, ControlFlow, DeviceEvents};
+use crate::event::Event;
+use crate::event_loop::{
+    ActiveEventLoop as RootWindowTarget, ControlFlow, DeviceEvents, EventLoopClosed,
+};
 use crate::platform::macos::ActivationPolicy;
 use crate::platform::pump_events::PumpStatus;
-use crate::window::{CustomCursor as RootCustomCursor, CustomCursorSource};
+use crate::platform_impl::platform::cursor::CustomCursor;
+use crate::window::{CustomCursor as RootCustomCursor, CustomCursorSource, Theme};

 #[derive(Default)]
 pub struct PanicInfo {
@@ -105,6 +106,17 @@ impl ActiveEventLoop {
        rwh_05::RawDisplayHandle::AppKit(rwh_05::AppKitDisplayHandle::empty())
    }

+    #[inline]
+    pub fn system_theme(&self) -> Option<Theme> {
+        let app = NSApplication::sharedApplication(self.mtm);
+
+        if app.respondsToSelector(sel!(effectiveAppearance)) {
+            Some(super::window_delegate::appearance_to_theme(&app.effectiveAppearance()))
+        } else {
+            Some(Theme::Light)
+        }
+    }
+
    #[cfg(feature = "rwh_06")]
    #[inline]
    pub fn raw_display_handle_rwh_06(
@@ -154,7 +166,21 @@ impl ActiveEventLoop {
    }
 }

-pub struct EventLoop {
+fn map_user_event<T: 'static>(
+    mut handler: impl FnMut(Event<T>, &RootWindowTarget),
+    receiver: Rc<mpsc::Receiver<T>>,
+) -> impl FnMut(Event<HandlePendingUserEvents>, &RootWindowTarget) {
+    move |event, window_target| match event.map_nonuser_event() {
+        Ok(event) => (handler)(event, window_target),
+        Err(_) => {
+            for event in receiver.try_iter() {
+                (handler)(Event::UserEvent(event), window_target);
+            }
+        },
+    }
+}
+
+pub struct EventLoop<T: 'static> {
    /// Store a reference to the application for convenience.
    ///
    /// We intentionally don't store `WinitApplication` since we want to have
@@ -166,7 +192,9 @@ pub struct EventLoop {
    /// keep it around here as well.
    delegate: Retained<ApplicationDelegate>,

-    proxy_wake_up: Arc<AtomicBool>,
+    // Event sender and receiver, used for EventLoopProxy.
+    sender: mpsc::Sender<T>,
+    receiver: Rc<mpsc::Receiver<T>>,

    window_target: RootWindowTarget,
    panic_info: Rc<PanicInfo>,
@@ -174,22 +202,18 @@ pub struct EventLoop {

 #[derive(Debug, Copy, Clone, PartialEq, Eq, Hash)]
 pub(crate) struct PlatformSpecificEventLoopAttributes {
-    pub(crate) activation_policy: ActivationPolicy,
+    pub(crate) activation_policy: Option<ActivationPolicy>,
    pub(crate) default_menu: bool,
    pub(crate) activate_ignoring_other_apps: bool,
 }

 impl Default for PlatformSpecificEventLoopAttributes {
    fn default() -> Self {
-        Self {
-            activation_policy: Default::default(), // Regular
-            default_menu: true,
-            activate_ignoring_other_apps: true,
-        }
+        Self { activation_policy: None, default_menu: true, activate_ignoring_other_apps: true }
    }
 }

-impl EventLoop {
+impl<T> EventLoop<T> {
    pub(crate) fn new(
        attributes: &PlatformSpecificEventLoopAttributes,
    ) -> Result<Self, EventLoopError> {
@@ -207,17 +231,14 @@ impl EventLoop {
        }

        let activation_policy = match attributes.activation_policy {
-            ActivationPolicy::Regular => NSApplicationActivationPolicy::Regular,
-            ActivationPolicy::Accessory => NSApplicationActivationPolicy::Accessory,
-            ActivationPolicy::Prohibited => NSApplicationActivationPolicy::Prohibited,
+            None => None,
+            Some(ActivationPolicy::Regular) => Some(NSApplicationActivationPolicy::Regular),
+            Some(ActivationPolicy::Accessory) => Some(NSApplicationActivationPolicy::Accessory),
+            Some(ActivationPolicy::Prohibited) => Some(NSApplicationActivationPolicy::Prohibited),
        };
-
-        let proxy_wake_up = Arc::new(AtomicBool::new(false));
-
        let delegate = ApplicationDelegate::new(
            mtm,
            activation_policy,
-            proxy_wake_up.clone(),
            attributes.default_menu,
            attributes.activate_ignoring_other_apps,
        );
@@ -229,14 +250,16 @@ impl EventLoop {
        let panic_info: Rc<PanicInfo> = Default::default();
        setup_control_flow_observers(mtm, Rc::downgrade(&panic_info));

+        let (sender, receiver) = mpsc::channel();
        Ok(EventLoop {
            app,
            delegate: delegate.clone(),
+            sender,
+            receiver: Rc::new(receiver),
            window_target: RootWindowTarget {
                p: ActiveEventLoop { delegate, mtm },
                _marker: PhantomData,
            },
-            proxy_wake_up,
            panic_info,
        })
    }
@@ -245,19 +268,24 @@ impl EventLoop {
        &self.window_target
    }

-    pub fn run_app<A: ApplicationHandler>(mut self, app: &mut A) -> Result<(), EventLoopError> {
-        self.run_app_on_demand(app)
+    pub fn run<F>(mut self, handler: F) -> Result<(), EventLoopError>
+    where
+        F: FnMut(Event<T>, &RootWindowTarget),
+    {
+        self.run_on_demand(handler)
    }

    // NB: we don't base this on `pump_events` because for `MacOs` we can't support
    // `pump_events` elegantly (we just ask to run the loop for a "short" amount of
    // time and so a layered implementation would end up using a lot of CPU due to
    // redundant wake ups.
-    pub fn run_app_on_demand<A: ApplicationHandler>(
-        &mut self,
-        app: &mut A,
-    ) -> Result<(), EventLoopError> {
-        self.delegate.set_event_handler(app, || {
+    pub fn run_on_demand<F>(&mut self, handler: F) -> Result<(), EventLoopError>
+    where
+        F: FnMut(Event<T>, &RootWindowTarget),
+    {
+        let handler = map_user_event(handler, self.receiver.clone());
+
+        self.delegate.set_event_handler(handler, || {
            autoreleasepool(|_| {
                // clear / normalize pump_events state
                self.delegate.set_wait_timeout(None);
@@ -290,12 +318,13 @@ impl EventLoop {
        Ok(())
    }

-    pub fn pump_app_events<A: ApplicationHandler>(
-        &mut self,
-        timeout: Option<Duration>,
-        app: &mut A,
-    ) -> PumpStatus {
-        self.delegate.set_event_handler(app, || {
+    pub fn pump_events<F>(&mut self, timeout: Option<Duration>, handler: F) -> PumpStatus
+    where
+        F: FnMut(Event<T>, &RootWindowTarget),
+    {
+        let handler = map_user_event(handler, self.receiver.clone());
+
+        self.delegate.set_event_handler(handler, || {
            autoreleasepool(|_| {
                // As a special case, if the application hasn't been launched yet then we at least
                // run the loop until it has fully launched.
@@ -359,8 +388,8 @@ impl EventLoop {
        })
    }

-    pub fn create_proxy(&self) -> EventLoopProxy {
-        EventLoopProxy::new(self.proxy_wake_up.clone())
+    pub fn create_proxy(&self) -> EventLoopProxy<T> {
+        EventLoopProxy::new(self.sender.clone())
    }
 }

@@ -418,15 +447,15 @@ pub fn stop_app_on_panic<F: FnOnce() -> R + UnwindSafe, R>(
    }
 }

-pub struct EventLoopProxy {
-    proxy_wake_up: Arc<AtomicBool>,
+pub struct EventLoopProxy<T> {
+    sender: mpsc::Sender<T>,
    source: CFRunLoopSourceRef,
 }

-unsafe impl Send for EventLoopProxy {}
-unsafe impl Sync for EventLoopProxy {}
+unsafe impl<T: Send> Send for EventLoopProxy<T> {}
+unsafe impl<T: Send> Sync for EventLoopProxy<T> {}

-impl Drop for EventLoopProxy {
+impl<T> Drop for EventLoopProxy<T> {
    fn drop(&mut self) {
        unsafe {
            CFRelease(self.source as _);
@@ -434,14 +463,14 @@ impl Drop for EventLoopProxy {
    }
 }

-impl Clone for EventLoopProxy {
+impl<T> Clone for EventLoopProxy<T> {
    fn clone(&self) -> Self {
-        EventLoopProxy::new(self.proxy_wake_up.clone())
+        EventLoopProxy::new(self.sender.clone())
    }
 }

-impl EventLoopProxy {
-    fn new(proxy_wake_up: Arc<AtomicBool>) -> Self {
+impl<T> EventLoopProxy<T> {
+    fn new(sender: mpsc::Sender<T>) -> Self {
        unsafe {
            // just wake up the eventloop
            extern "C" fn event_loop_proxy_handler(_: *const c_void) {}
@@ -462,20 +491,21 @@ impl EventLoopProxy {
                perform: event_loop_proxy_handler,
            };
            let source = CFRunLoopSourceCreate(ptr::null_mut(), CFIndex::MAX - 1, &mut context);
-            CFRunLoopAddSource(rl, source, kCFRunLoopDefaultMode);
+            CFRunLoopAddSource(rl, source, kCFRunLoopCommonModes);
            CFRunLoopWakeUp(rl);

-            EventLoopProxy { proxy_wake_up, source }
+            EventLoopProxy { sender, source }
        }
    }

-    pub fn wake_up(&self) {
-        self.proxy_wake_up.store(true, AtomicOrdering::Relaxed);
+    pub fn send_event(&self, event: T) -> Result<(), EventLoopClosed<T>> {
+        self.sender.send(event).map_err(|mpsc::SendError(x)| EventLoopClosed(x))?;
        unsafe {
            // let the main thread know there's a new event
            CFRunLoopSourceSignal(self.source);
            let rl = CFRunLoopGetMain();
            CFRunLoopWakeUp(rl);
        }
+        Ok(())
    }
 }
--- a/src/platform_impl/apple/appkit/ffi.rs
+++ b/src/platform_impl/apple/appkit/ffi.rs
--- a/src/platform_impl/apple/appkit/menu.rs
+++ b/src/platform_impl/apple/appkit/menu.rs
--- a/src/platform_impl/apple/appkit/mod.rs
+++ b/src/platform_impl/apple/appkit/mod.rs
@@ -37,7 +37,7 @@ pub(crate) use crate::platform_impl::Fullscreen;
 pub struct DeviceId;

 impl DeviceId {
-    pub const unsafe fn dummy() -> Self {
+    pub const fn dummy() -> Self {
        DeviceId
    }
 }
--- a/src/platform_impl/apple/appkit/monitor.rs
+++ b/src/platform_impl/apple/appkit/monitor.rs
--- a/src/platform_impl/apple/appkit/observer.rs
+++ b/src/platform_impl/apple/appkit/observer.rs
@@ -13,8 +13,8 @@ use block2::Block;
 use core_foundation::base::{CFIndex, CFOptionFlags, CFRelease, CFTypeRef};
 use core_foundation::date::CFAbsoluteTimeGetCurrent;
 use core_foundation::runloop::{
-    kCFRunLoopAfterWaiting, kCFRunLoopBeforeWaiting, kCFRunLoopDefaultMode, kCFRunLoopExit,
-    CFRunLoopActivity, CFRunLoopAddObserver, CFRunLoopAddTimer, CFRunLoopGetMain,
+    kCFRunLoopAfterWaiting, kCFRunLoopBeforeWaiting, kCFRunLoopCommonModes, kCFRunLoopDefaultMode,
+    kCFRunLoopExit, CFRunLoopActivity, CFRunLoopAddObserver, CFRunLoopAddTimer, CFRunLoopGetMain,
    CFRunLoopObserverCallBack, CFRunLoopObserverContext, CFRunLoopObserverCreate,
    CFRunLoopObserverRef, CFRunLoopRef, CFRunLoopTimerCreate, CFRunLoopTimerInvalidate,
    CFRunLoopTimerRef, CFRunLoopTimerSetNextFireDate, CFRunLoopWakeUp,
@@ -129,7 +129,7 @@ impl RunLoop {
                context,
            )
        };
-        unsafe { CFRunLoopAddObserver(self.0, observer, kCFRunLoopDefaultMode) };
+        unsafe { CFRunLoopAddObserver(self.0, observer, kCFRunLoopCommonModes) };
    }

    /// Submit a closure to run on the main thread as the next step in the run loop, before other
@@ -267,7 +267,7 @@ impl EventLoopWaker {
                wakeup_main_loop,
                ptr::null_mut(),
            );
-            CFRunLoopAddTimer(CFRunLoopGetMain(), timer, kCFRunLoopDefaultMode);
+            CFRunLoopAddTimer(CFRunLoopGetMain(), timer, kCFRunLoopCommonModes);
            Self { timer, start_instant: Instant::now(), next_fire_date: None }
        }
    }
--- a/src/platform_impl/apple/appkit/util.rs
+++ b/src/platform_impl/apple/appkit/util.rs
@@ -2,8 +2,7 @@ use tracing::trace;

 macro_rules! trace_scope {
    ($s:literal) => {
-        let _crate =
-            $crate::platform_impl::platform::appkit::util::TraceGuard::new(module_path!(), $s);
+        let _crate = $crate::platform_impl::platform::util::TraceGuard::new(module_path!(), $s);
    };
 }

--- a/src/platform_impl/apple/appkit/view.rs
+++ b/src/platform_impl/apple/appkit/view.rs
@@ -20,18 +20,17 @@ use super::app_state::ApplicationDelegate;
 use super::cursor::{default_cursor, invisible_cursor};
 use super::event::{
    code_to_key, code_to_location, create_key_event, event_mods, lalt_pressed, ralt_pressed,
-    scancode_to_physicalkey,
+    scancode_to_physicalkey, KeyEventExtra,
 };
 use super::window::WinitWindow;
 use super::DEVICE_ID;
 use crate::dpi::{LogicalPosition, LogicalSize};
 use crate::event::{
-    DeviceEvent, ElementState, Ime, Modifiers, MouseButton, MouseScrollDelta, TouchPhase,
+    DeviceEvent, ElementState, Ime, KeyEvent, Modifiers, MouseButton, MouseScrollDelta, TouchPhase,
    WindowEvent,
 };
 use crate::keyboard::{Key, KeyCode, KeyLocation, ModifiersState, NamedKey};
 use crate::platform::macos::OptionAsAlt;
-use crate::window::WindowId as RootWindowId;

 #[derive(Debug)]
 struct CursorState {
@@ -400,7 +399,7 @@ declare_class!(
                unsafe { &*string }.to_string()
            };

-            let is_control = string.chars().next().map_or(false, |c| c.is_control());
+            let is_control = string.chars().next().is_some_and(|c| c.is_control());

            // Commit only if we have marked text.
            if unsafe { self.hasMarkedText() } && self.is_ime_enabled() && !is_control {
@@ -483,7 +482,7 @@ declare_class!(
            };

            if !had_ime_input || self.ivars().forward_key_to_app.get() {
-                let key_event = create_key_event(&event, true, unsafe { event.isARepeat() }, None);
+                let key_event = create_key_event(&event, true, unsafe { event.isARepeat() });
                self.queue_event(WindowEvent::KeyboardInput {
                    device_id: DEVICE_ID,
                    event: key_event,
@@ -506,7 +505,7 @@ declare_class!(
            ) {
                self.queue_event(WindowEvent::KeyboardInput {
                    device_id: DEVICE_ID,
-                    event: create_key_event(&event, false, false, None),
+                    event: create_key_event(&event, false, false),
                    is_synthetic: false,
                });
            }
@@ -553,7 +552,7 @@ declare_class!(
                .expect("could not find current event");

            self.update_modifiers(&event, false);
-            let event = create_key_event(&event, true, unsafe { event.isARepeat() }, None);
+            let event = create_key_event(&event, true, unsafe { event.isARepeat() });

            self.queue_event(WindowEvent::KeyboardInput {
                device_id: DEVICE_ID,
@@ -687,9 +686,7 @@ declare_class!(

            self.update_modifiers(event, false);

-            self.ivars().app_delegate.maybe_queue_with_handler(move |app, event_loop|
-                app.device_event(event_loop, DEVICE_ID, DeviceEvent::MouseWheel { delta })
-            );
+            self.ivars().app_delegate.maybe_queue_device_event(DeviceEvent::MouseWheel { delta });
            self.queue_event(WindowEvent::MouseWheel {
                device_id: DEVICE_ID,
                delta,
@@ -833,10 +830,7 @@ impl WinitView {
    }

    fn queue_event(&self, event: WindowEvent) {
-        let window_id = RootWindowId(self.window().id());
-        self.ivars().app_delegate.maybe_queue_with_handler(move |app, event_loop| {
-            app.window_event(event_loop, window_id, event);
-        });
+        self.ivars().app_delegate.maybe_queue_window_event(self.window().id(), event);
    }

    fn scale_factor(&self) -> f64 {
@@ -939,22 +933,36 @@ impl WinitView {
                let scancode = unsafe { ns_event.keyCode() };
                let physical_key = scancode_to_physicalkey(scancode as u32);

-                // We'll correct the `is_press` later.
-                let mut event = create_key_event(ns_event, false, false, Some(physical_key));
-
-                let key = code_to_key(physical_key, scancode);
+                let logical_key = code_to_key(physical_key, scancode);
                // Ignore processing of unknown modifiers because we can't determine whether
                // it was pressed or release reliably.
-                let Some(event_modifier) = key_to_modifier(&key) else {
+                //
+                // Furthermore, sometimes normal keys are reported inside flagsChanged:, such as
+                // when holding Caps Lock while pressing another key, see:
+                // https://github.com/alacritty/alacritty/issues/8268
+                let Some(event_modifier) = key_to_modifier(&logical_key) else {
                    break 'send_event;
                };
-                event.physical_key = physical_key;
-                event.logical_key = key.clone();
-                event.location = code_to_location(physical_key);
+
+                let mut event = KeyEvent {
+                    location: code_to_location(physical_key),
+                    logical_key: logical_key.clone(),
+                    physical_key,
+                    repeat: false,
+                    // We'll correct this later.
+                    state: Pressed,
+                    text: None,
+                    platform_specific: KeyEventExtra {
+                        text_with_all_modifiers: None,
+                        key_without_modifiers: logical_key.clone(),
+                    },
+                };
+
                let location_mask = ModLocationMask::from_location(event.location);

                let mut phys_mod_state = self.ivars().phys_modifiers.borrow_mut();
-                let phys_mod = phys_mod_state.entry(key).or_insert(ModLocationMask::empty());
+                let phys_mod =
+                    phys_mod_state.entry(logical_key).or_insert(ModLocationMask::empty());

                let is_active = current_modifiers.state().contains(event_modifier);
                let mut events = VecDeque::with_capacity(2);
--- a/src/platform_impl/macos/window.rs
+++ b/src/platform_impl/macos/window.rs
@@ -0,0 +1,126 @@
+#![allow(clippy::unnecessary_cast)]
+
+use objc2::rc::{autoreleasepool, Retained};
+use objc2::{declare_class, mutability, ClassType, DeclaredClass};
+use objc2_app_kit::{NSResponder, NSWindow};
+use objc2_foundation::{MainThreadBound, MainThreadMarker, NSObject};
+
+use super::event_loop::ActiveEventLoop;
+use super::window_delegate::WindowDelegate;
+use crate::error::OsError as RootOsError;
+use crate::window::WindowAttributes;
+
+pub(crate) struct Window {
+    window: MainThreadBound<Retained<WinitWindow>>,
+    /// The window only keeps a weak reference to this, so we must keep it around here.
+    delegate: MainThreadBound<Retained<WindowDelegate>>,
+}
+
+impl Drop for Window {
+    fn drop(&mut self) {
+        self.window.get_on_main(|window| autoreleasepool(|_| window.close()))
+    }
+}
+
+impl Window {
+    pub(crate) fn new(
+        window_target: &ActiveEventLoop,
+        attributes: WindowAttributes,
+    ) -> Result<Self, RootOsError> {
+        let mtm = window_target.mtm;
+        let delegate = autoreleasepool(|_| {
+            WindowDelegate::new(window_target.app_delegate(), attributes, mtm)
+        })?;
+        Ok(Window {
+            window: MainThreadBound::new(delegate.window().retain(), mtm),
+            delegate: MainThreadBound::new(delegate, mtm),
+        })
+    }
+
+    pub(crate) fn maybe_queue_on_main(&self, f: impl FnOnce(&WindowDelegate) + Send + 'static) {
+        // For now, don't actually do queuing, since it may be less predictable
+        self.maybe_wait_on_main(f)
+    }
+
+    pub(crate) fn maybe_wait_on_main<R: Send>(
+        &self,
+        f: impl FnOnce(&WindowDelegate) -> R + Send,
+    ) -> R {
+        self.delegate.get_on_main(|delegate| f(delegate))
+    }
+
+    #[cfg(feature = "rwh_06")]
+    #[inline]
+    pub(crate) fn raw_window_handle_rwh_06(
+        &self,
+    ) -> Result<rwh_06::RawWindowHandle, rwh_06::HandleError> {
+        if let Some(mtm) = MainThreadMarker::new() {
+            Ok(self.delegate.get(mtm).raw_window_handle_rwh_06())
+        } else {
+            Err(rwh_06::HandleError::Unavailable)
+        }
+    }
+
+    #[cfg(feature = "rwh_06")]
+    #[inline]
+    pub(crate) fn raw_display_handle_rwh_06(
+        &self,
+    ) -> Result<rwh_06::RawDisplayHandle, rwh_06::HandleError> {
+        Ok(rwh_06::RawDisplayHandle::AppKit(rwh_06::AppKitDisplayHandle::new()))
+    }
+}
+
+#[derive(Debug, Copy, Clone, PartialEq, Eq, PartialOrd, Ord, Hash)]
+pub struct WindowId(pub usize);
+
+impl WindowId {
+    pub const fn dummy() -> Self {
+        Self(0)
+    }
+}
+
+impl From<WindowId> for u64 {
+    fn from(window_id: WindowId) -> Self {
+        window_id.0 as u64
+    }
+}
+
+impl From<u64> for WindowId {
+    fn from(raw_id: u64) -> Self {
+        Self(raw_id as usize)
+    }
+}
+
+declare_class!(
+    #[derive(Debug)]
+    pub struct WinitWindow;
+
+    unsafe impl ClassType for WinitWindow {
+        #[inherits(NSResponder, NSObject)]
+        type Super = NSWindow;
+        type Mutability = mutability::MainThreadOnly;
+        const NAME: &'static str = "WinitWindow";
+    }
+
+    impl DeclaredClass for WinitWindow {}
+
+    unsafe impl WinitWindow {
+        #[method(canBecomeMainWindow)]
+        fn can_become_main_window(&self) -> bool {
+            trace_scope!("canBecomeMainWindow");
+            true
+        }
+
+        #[method(canBecomeKeyWindow)]
+        fn can_become_key_window(&self) -> bool {
+            trace_scope!("canBecomeKeyWindow");
+            true
+        }
+    }
+);
+
+impl WinitWindow {
+    pub(super) fn id(&self) -> WindowId {
+        WindowId(self as *const Self as usize)
+    }
+}
--- a/src/platform_impl/apple/appkit/window_delegate.rs
+++ b/src/platform_impl/apple/appkit/window_delegate.rs
@@ -39,7 +39,7 @@ use crate::event::{InnerSizeWriter, WindowEvent};
 use crate::platform::macos::{OptionAsAlt, WindowExtMacOS};
 use crate::window::{
    Cursor, CursorGrabMode, Icon, ImePurpose, ResizeDirection, Theme, UserAttentionType,
-    WindowAttributes, WindowButtons, WindowId as RootWindowId, WindowLevel,
+    WindowAttributes, WindowButtons, WindowLevel,
 };

 #[derive(Clone, Debug)]
@@ -55,6 +55,7 @@ pub struct PlatformSpecificWindowAttributes {
    pub accepts_first_mouse: bool,
    pub tabbing_identifier: Option<String>,
    pub option_as_alt: OptionAsAlt,
+    pub borderless_game: bool,
 }

 impl Default for PlatformSpecificWindowAttributes {
@@ -72,6 +73,7 @@ impl Default for PlatformSpecificWindowAttributes {
            accepts_first_mouse: true,
            tabbing_identifier: None,
            option_as_alt: Default::default(),
+            borderless_game: false,
        }
    }
 }
@@ -85,8 +87,8 @@ pub(crate) struct State {

    // During `windowDidResize`, we use this to only send Moved if the position changed.
    //
-    // This is expressed in native screen coordinates.
-    previous_position: Cell<Option<NSPoint>>,
+    // This is expressed in desktop coordinates, and flipped to match Winit's coordinate system.
+    previous_position: Cell<NSPoint>,

    // Used to prevent redundant events.
    previous_scale_factor: Cell<f64>,
@@ -120,6 +122,7 @@ pub(crate) struct State {
    standard_frame: Cell<Option<NSRect>>,
    is_simple_fullscreen: Cell<bool>,
    saved_style: Cell<Option<NSWindowStyleMask>>,
+    is_borderless_game: Cell<bool>,
 }

 declare_class!(
@@ -711,7 +714,7 @@ impl WindowDelegate {
        let delegate = mtm.alloc().set_ivars(State {
            app_delegate: app_delegate.retain(),
            window: window.retain(),
-            previous_position: Cell::new(None),
+            previous_position: Cell::new(flip_window_screen_coordinates(window.frame())),
            previous_scale_factor: Cell::new(scale_factor),
            resize_increments: Cell::new(resize_increments),
            decorations: Cell::new(attrs.decorations),
@@ -725,6 +728,7 @@ impl WindowDelegate {
            standard_frame: Cell::new(None),
            is_simple_fullscreen: Cell::new(false),
            saved_style: Cell::new(None),
+            is_borderless_game: Cell::new(attrs.platform_specific.borderless_game),
        });
        let delegate: Retained<WindowDelegate> = unsafe { msg_send_id![super(delegate), init] };

@@ -807,13 +811,11 @@ impl WindowDelegate {
    }

    pub(crate) fn queue_event(&self, event: WindowEvent) {
-        let window_id = RootWindowId(self.window().id());
-        self.ivars().app_delegate.maybe_queue_with_handler(move |app, event_loop| {
-            app.window_event(event_loop, window_id, event);
-        });
+        self.ivars().app_delegate.maybe_queue_window_event(self.window().id(), event);
    }

    fn handle_scale_factor_changed(&self, scale_factor: CGFloat) {
+        let app_delegate = &self.ivars().app_delegate;
        let window = self.window();

        let content_size = window.contentRectForFrameRect(window.frame()).size;
@@ -821,7 +823,7 @@ impl WindowDelegate {

        let suggested_size = content_size.to_physical(scale_factor);
        let new_inner_size = Arc::new(Mutex::new(suggested_size));
-        self.queue_event(WindowEvent::ScaleFactorChanged {
+        app_delegate.handle_window_event(window.id(), WindowEvent::ScaleFactorChanged {
            scale_factor,
            inner_size_writer: InnerSizeWriter::new(Arc::downgrade(&new_inner_size)),
        });
@@ -833,17 +835,16 @@ impl WindowDelegate {
            let size = NSSize::new(logical_size.width, logical_size.height);
            window.setContentSize(size);
        }
-        self.queue_event(WindowEvent::Resized(physical_size));
+        app_delegate.handle_window_event(window.id(), WindowEvent::Resized(physical_size));
    }

    fn emit_move_event(&self) {
-        let frame = self.window().frame();
-        if self.ivars().previous_position.get() == Some(frame.origin) {
+        let position = flip_window_screen_coordinates(self.window().frame());
+        if self.ivars().previous_position.get() == position {
            return;
        }
-        self.ivars().previous_position.set(Some(frame.origin));
+        self.ivars().previous_position.set(position);

-        let position = flip_window_screen_coordinates(frame);
        let position =
            LogicalPosition::new(position.x, position.y).to_physical(self.scale_factor());
        self.queue_event(WindowEvent::Moved(position));
@@ -1162,7 +1163,8 @@ impl WindowDelegate {
    #[inline]
    pub fn drag_window(&self) -> Result<(), ExternalError> {
        let mtm = MainThreadMarker::from(self);
-        let event = NSApplication::sharedApplication(mtm).currentEvent().unwrap();
+        let event =
+            NSApplication::sharedApplication(mtm).currentEvent().ok_or(ExternalError::Ignored)?;
        self.window().performWindowDragWithEvent(&event);
        Ok(())
    }
@@ -1411,7 +1413,7 @@ impl WindowDelegate {
        }

        match (old_fullscreen, fullscreen) {
-            (None, Some(_)) => {
+            (None, Some(fullscreen)) => {
                // `toggleFullScreen` doesn't work if the `StyleMask` is none, so we
                // set a normal style temporarily. The previous state will be
                // restored in `WindowDelegate::window_did_exit_fullscreen`.
@@ -1421,6 +1423,17 @@ impl WindowDelegate {
                    self.set_style_mask(required);
                    self.ivars().saved_style.set(Some(curr_mask));
                }
+
+                // In borderless games, we want to disable the dock and menu bar
+                // by setting the presentation options. We do this here rather than in
+                // `window:willUseFullScreenPresentationOptions` because for some reason
+                // the menu bar remains interactable despite being hidden.
+                if self.is_borderless_game() && matches!(fullscreen, Fullscreen::Borderless(_)) {
+                    let presentation_options = NSApplicationPresentationOptions::NSApplicationPresentationHideDock
+                            | NSApplicationPresentationOptions::NSApplicationPresentationHideMenuBar;
+                    app.setPresentationOptions(presentation_options);
+                }
+
                toggle_fullscreen(self.window());
            },
            (Some(Fullscreen::Borderless(_)), None) => {
@@ -1428,13 +1441,7 @@ impl WindowDelegate {
                toggle_fullscreen(self.window());
            },
            (Some(Fullscreen::Exclusive(ref video_mode)), None) => {
-                unsafe {
-                    ffi::CGRestorePermanentDisplayConfiguration();
-                    assert_eq!(
-                        ffi::CGDisplayRelease(video_mode.monitor().native_identifier()),
-                        ffi::kCGErrorSuccess
-                    );
-                };
+                restore_and_release_display(&video_mode.monitor());
                toggle_fullscreen(self.window());
            },
            (Some(Fullscreen::Borderless(_)), Some(Fullscreen::Exclusive(_))) => {
@@ -1465,13 +1472,7 @@ impl WindowDelegate {
                );
                app.setPresentationOptions(presentation_options);

-                unsafe {
-                    ffi::CGRestorePermanentDisplayConfiguration();
-                    assert_eq!(
-                        ffi::CGDisplayRelease(video_mode.monitor().native_identifier()),
-                        ffi::kCGErrorSuccess
-                    );
-                };
+                restore_and_release_display(&video_mode.monitor());

                // Restore the normal window level following the Borderless fullscreen
                // `CGShieldingWindowLevel() + 1` hack.
@@ -1615,7 +1616,7 @@ impl WindowDelegate {
    pub fn raw_window_handle_rwh_04(&self) -> rwh_04::RawWindowHandle {
        let mut window_handle = rwh_04::AppKitHandle::empty();
        window_handle.ns_window = self.window() as *const WinitWindow as *mut _;
-        window_handle.ns_view = Retained::as_ptr(&self.contentView().unwrap()) as *mut _;
+        window_handle.ns_view = Retained::as_ptr(&self.view()) as *mut _;
        rwh_04::RawWindowHandle::AppKit(window_handle)
    }

@@ -1659,14 +1660,18 @@ impl WindowDelegate {
    }

    pub fn theme(&self) -> Option<Theme> {
-        // Note: We could choose between returning the value of `effectiveAppearance` or
-        // `appearance`, depending on what the user is asking about:
-        // - "how should I render on this particular frame".
-        // - "what is the configuration for this window".
-        //
-        // We choose the latter for consistency with the `set_theme` call, though it might also be
-        // useful to expose the former.
-        Some(appearance_to_theme(unsafe { &*self.window().appearance()? }))
+        unsafe { self.window().appearance() }
+            .map(|appearance| appearance_to_theme(&appearance))
+            .or_else(|| {
+                let mtm = MainThreadMarker::from(self);
+                let app = NSApplication::sharedApplication(mtm);
+
+                if app.respondsToSelector(sel!(effectiveAppearance)) {
+                    Some(super::window_delegate::appearance_to_theme(&app.effectiveAppearance()))
+                } else {
+                    Some(Theme::Light)
+                }
+            })
    }

    pub fn set_theme(&self, theme: Option<Theme>) {
@@ -1691,6 +1696,21 @@ impl WindowDelegate {
    }
 }

+fn restore_and_release_display(monitor: &MonitorHandle) {
+    let available_monitors = monitor::available_monitors();
+    if available_monitors.contains(monitor) {
+        unsafe {
+            ffi::CGRestorePermanentDisplayConfiguration();
+            assert_eq!(ffi::CGDisplayRelease(monitor.native_identifier()), ffi::kCGErrorSuccess);
+        };
+    } else {
+        warn!(
+            monitor = monitor.name(),
+            "Tried to restore exclusive fullscreen on a monitor that is no longer available"
+        );
+    }
+}
+
 impl WindowExtMacOS for WindowDelegate {
    #[inline]
    fn simple_fullscreen(&self) -> bool {
@@ -1824,6 +1844,14 @@ impl WindowExtMacOS for WindowDelegate {
    fn option_as_alt(&self) -> OptionAsAlt {
        self.view().option_as_alt()
    }
+
+    fn set_borderless_game(&self, borderless_game: bool) {
+        self.ivars().is_borderless_game.set(borderless_game);
+    }
+
+    fn is_borderless_game(&self) -> bool {
+        self.ivars().is_borderless_game.get()
+    }
 }

 const DEFAULT_STANDARD_FRAME: NSRect =
@@ -1834,7 +1862,7 @@ fn dark_appearance_name() -> &'static NSString {
    ns_string!("NSAppearanceNameDarkAqua")
 }

-fn appearance_to_theme(appearance: &NSAppearance) -> Theme {
+pub fn appearance_to_theme(appearance: &NSAppearance) -> Theme {
    let best_match = appearance.bestMatchFromAppearancesWithNames(&NSArray::from_id_slice(&[
        unsafe { NSAppearanceNameAqua.copy() },
        dark_appearance_name().copy(),
--- a/src/platform_impl/mod.rs
+++ b/src/platform_impl/mod.rs
@@ -3,10 +3,12 @@ use crate::window::Fullscreen as RootFullscreen;

 #[cfg(android_platform)]
 mod android;
-#[cfg(target_vendor = "apple")]
-mod apple;
+#[cfg(ios_platform)]
+mod ios;
 #[cfg(any(x11_platform, wayland_platform))]
 mod linux;
+#[cfg(macos_platform)]
+mod macos;
 #[cfg(orbital_platform)]
 mod orbital;
 #[cfg(web_platform)]
@@ -15,17 +17,19 @@ mod web;
 mod windows;

 #[cfg(android_platform)]
-use self::android as platform;
-#[cfg(target_vendor = "apple")]
-use self::apple as platform;
+use android as platform;
+#[cfg(ios_platform)]
+use ios as platform;
 #[cfg(any(x11_platform, wayland_platform))]
-use self::linux as platform;
+use linux as platform;
+#[cfg(macos_platform)]
+use macos as platform;
 #[cfg(orbital_platform)]
-use self::orbital as platform;
+use orbital as platform;
 #[cfg(web_platform)]
-use self::web as platform;
+use web as platform;
 #[cfg(windows_platform)]
-use self::windows as platform;
+use windows as platform;

 pub use self::platform::*;

--- a/src/platform_impl/orbital/event_loop.rs
+++ b/src/platform_impl/orbital/event_loop.rs
@@ -12,7 +12,6 @@ use orbclient::{
 };
 use smol_str::SmolStr;

-use crate::application::ApplicationHandler;
 use crate::error::EventLoopError;
 use crate::event::{self, Ime, Modifiers, StartCause};
 use crate::event_loop::{self, ControlFlow, DeviceEvents};
@@ -21,7 +20,7 @@ use crate::keyboard::{
    PhysicalKey,
 };
 use crate::window::{
-    CustomCursor as RootCustomCursor, CustomCursorSource, WindowId as RootWindowId,
+    CustomCursor as RootCustomCursor, CustomCursorSource, Theme, WindowId as RootWindowId,
 };

 use super::{
@@ -272,18 +271,16 @@ impl EventState {
    }
 }

-pub struct EventLoop {
+pub struct EventLoop<T> {
    windows: Vec<(Arc<RedoxSocket>, EventState)>,
    window_target: event_loop::ActiveEventLoop,
-    user_events_sender: mpsc::SyncSender<()>,
-    user_events_receiver: mpsc::Receiver<()>,
+    user_events_sender: mpsc::Sender<T>,
+    user_events_receiver: mpsc::Receiver<T>,
 }

-impl EventLoop {
+impl<T: 'static> EventLoop<T> {
    pub(crate) fn new(_: &PlatformSpecificEventLoopAttributes) -> Result<Self, EventLoopError> {
-        // NOTE: Create a channel which can hold only one event to automatically _squash_ user
-        // events.
-        let (user_events_sender, user_events_receiver) = mpsc::sync_channel(1);
+        let (user_events_sender, user_events_receiver) = mpsc::channel();

        let event_socket = Arc::new(
            RedoxSocket::event()
@@ -325,13 +322,14 @@ impl EventLoop {
        })
    }

-    fn process_event<A: ApplicationHandler>(
+    fn process_event<F>(
        window_id: WindowId,
        event_option: EventOption,
        event_state: &mut EventState,
-        window_target: &event_loop::ActiveEventLoop,
-        app: &mut A,
-    ) {
+        mut event_handler: F,
+    ) where
+        F: FnMut(event::Event<T>),
+    {
        match event_option {
            EventOption::Key(KeyEvent { character, scancode, pressed }) => {
                // Convert scancode
@@ -373,128 +371,125 @@ impl EventLoop {
                    key_without_modifiers = logical_key.clone();
                }

-                let window_id = RootWindowId(window_id);
-                let event = event::WindowEvent::KeyboardInput {
-                    device_id: event::DeviceId(DeviceId),
-                    event: event::KeyEvent {
-                        logical_key,
-                        physical_key,
-                        location: KeyLocation::Standard,
-                        state: element_state(pressed),
-                        repeat: false,
-                        text,
-                        platform_specific: KeyEventExtra {
-                            key_without_modifiers,
-                            text_with_all_modifiers,
+                event_handler(event::Event::WindowEvent {
+                    window_id: RootWindowId(window_id),
+                    event: event::WindowEvent::KeyboardInput {
+                        device_id: event::DeviceId(DeviceId),
+                        event: event::KeyEvent {
+                            logical_key,
+                            physical_key,
+                            location: KeyLocation::Standard,
+                            state: element_state(pressed),
+                            repeat: false,
+                            text,
+                            platform_specific: KeyEventExtra {
+                                key_without_modifiers,
+                                text_with_all_modifiers,
+                            },
                        },
+                        is_synthetic: false,
                    },
-                    is_synthetic: false,
-                };
-
-                app.window_event(window_target, window_id, event);
+                });

                // If the state of the modifiers has changed, send the event.
                if modifiers_before != event_state.keyboard {
-                    app.window_event(
-                        window_target,
-                        window_id,
-                        event::WindowEvent::ModifiersChanged(event_state.modifiers()),
-                    );
+                    event_handler(event::Event::WindowEvent {
+                        window_id: RootWindowId(window_id),
+                        event: event::WindowEvent::ModifiersChanged(event_state.modifiers()),
+                    })
                }
            },
            EventOption::TextInput(TextInputEvent { character }) => {
-                app.window_event(
-                    window_target,
-                    RootWindowId(window_id),
-                    event::WindowEvent::Ime(Ime::Preedit("".into(), None)),
-                );
-                app.window_event(
-                    window_target,
-                    RootWindowId(window_id),
-                    event::WindowEvent::Ime(Ime::Commit(character.into())),
-                );
+                event_handler(event::Event::WindowEvent {
+                    window_id: RootWindowId(window_id),
+                    event: event::WindowEvent::Ime(Ime::Preedit("".into(), None)),
+                });
+                event_handler(event::Event::WindowEvent {
+                    window_id: RootWindowId(window_id),
+                    event: event::WindowEvent::Ime(Ime::Commit(character.into())),
+                });
            },
            EventOption::Mouse(MouseEvent { x, y }) => {
-                app.window_event(
-                    window_target,
-                    RootWindowId(window_id),
-                    event::WindowEvent::CursorMoved {
+                event_handler(event::Event::WindowEvent {
+                    window_id: RootWindowId(window_id),
+                    event: event::WindowEvent::CursorMoved {
                        device_id: event::DeviceId(DeviceId),
                        position: (x, y).into(),
                    },
-                );
+                });
            },
            EventOption::MouseRelative(MouseRelativeEvent { dx, dy }) => {
-                app.device_event(
-                    window_target,
-                    event::DeviceId(DeviceId),
-                    event::DeviceEvent::MouseMotion { delta: (dx as f64, dy as f64) },
-                );
+                event_handler(event::Event::DeviceEvent {
+                    device_id: event::DeviceId(DeviceId),
+                    event: event::DeviceEvent::MouseMotion { delta: (dx as f64, dy as f64) },
+                });
            },
            EventOption::Button(ButtonEvent { left, middle, right }) => {
                while let Some((button, state)) = event_state.mouse(left, middle, right) {
-                    app.window_event(
-                        window_target,
-                        RootWindowId(window_id),
-                        event::WindowEvent::MouseInput {
+                    event_handler(event::Event::WindowEvent {
+                        window_id: RootWindowId(window_id),
+                        event: event::WindowEvent::MouseInput {
                            device_id: event::DeviceId(DeviceId),
                            state,
                            button,
                        },
-                    );
+                    });
                }
            },
            EventOption::Scroll(ScrollEvent { x, y }) => {
-                app.window_event(
-                    window_target,
-                    RootWindowId(window_id),
-                    event::WindowEvent::MouseWheel {
+                event_handler(event::Event::WindowEvent {
+                    window_id: RootWindowId(window_id),
+                    event: event::WindowEvent::MouseWheel {
                        device_id: event::DeviceId(DeviceId),
                        delta: event::MouseScrollDelta::LineDelta(x as f32, y as f32),
                        phase: event::TouchPhase::Moved,
                    },
-                );
+                });
            },
            EventOption::Quit(QuitEvent {}) => {
-                app.window_event(
-                    window_target,
-                    RootWindowId(window_id),
-                    event::WindowEvent::CloseRequested,
-                );
+                event_handler(event::Event::WindowEvent {
+                    window_id: RootWindowId(window_id),
+                    event: event::WindowEvent::CloseRequested,
+                });
            },
            EventOption::Focus(FocusEvent { focused }) => {
-                app.window_event(
-                    window_target,
-                    RootWindowId(window_id),
-                    event::WindowEvent::Focused(focused),
-                );
+                event_handler(event::Event::WindowEvent {
+                    window_id: RootWindowId(window_id),
+                    event: event::WindowEvent::Focused(focused),
+                });
            },
            EventOption::Move(MoveEvent { x, y }) => {
-                app.window_event(
-                    window_target,
-                    RootWindowId(window_id),
-                    event::WindowEvent::Moved((x, y).into()),
-                );
+                event_handler(event::Event::WindowEvent {
+                    window_id: RootWindowId(window_id),
+                    event: event::WindowEvent::Moved((x, y).into()),
+                });
            },
            EventOption::Resize(ResizeEvent { width, height }) => {
-                app.window_event(
-                    window_target,
-                    RootWindowId(window_id),
-                    event::WindowEvent::Resized((width, height).into()),
-                );
+                event_handler(event::Event::WindowEvent {
+                    window_id: RootWindowId(window_id),
+                    event: event::WindowEvent::Resized((width, height).into()),
+                });

                // Acknowledge resize after event loop.
                event_state.resize_opt = Some((width, height));
            },
            // TODO: Screen, Clipboard, Drop
            EventOption::Hover(HoverEvent { entered }) => {
-                let event = if entered {
-                    event::WindowEvent::CursorEntered { device_id: event::DeviceId(DeviceId) }
+                if entered {
+                    event_handler(event::Event::WindowEvent {
+                        window_id: RootWindowId(window_id),
+                        event: event::WindowEvent::CursorEntered {
+                            device_id: event::DeviceId(DeviceId),
+                        },
+                    });
                } else {
-                    event::WindowEvent::CursorLeft { device_id: event::DeviceId(DeviceId) }
-                };
-
-                app.window_event(window_target, RootWindowId(window_id), event);
+                    event_handler(event::Event::WindowEvent {
+                        window_id: RootWindowId(window_id),
+                        event: event::WindowEvent::CursorLeft {
+                            device_id: event::DeviceId(DeviceId),
+                        },
+                    });
+                }
            },
            other => {
                tracing::warn!("unhandled event: {:?}", other);
@@ -502,13 +497,22 @@ impl EventLoop {
        }
    }

-    pub fn run_app<A: ApplicationHandler>(mut self, app: &mut A) -> Result<(), EventLoopError> {
+    pub fn run<F>(mut self, mut event_handler_inner: F) -> Result<(), EventLoopError>
+    where
+        F: FnMut(event::Event<T>, &event_loop::ActiveEventLoop),
+    {
+        let mut event_handler =
+            move |event: event::Event<T>, window_target: &event_loop::ActiveEventLoop| {
+                event_handler_inner(event, window_target);
+            };
+
        let mut start_cause = StartCause::Init;
+
        loop {
-            app.new_events(&self.window_target, start_cause);
+            event_handler(event::Event::NewEvents(start_cause), &self.window_target);

            if start_cause == StartCause::Init {
-                app.resumed(&self.window_target);
+                event_handler(event::Event::Resumed, &self.window_target);
            }

            // Handle window creates.
@@ -524,15 +528,23 @@ impl EventLoop {

                self.windows.push((window, EventState::default()));

-                let window_id = RootWindowId(window_id);
-
                // Send resize event on create to indicate first size.
-                let event = event::WindowEvent::Resized((properties.w, properties.h).into());
-                app.window_event(&self.window_target, window_id, event);
+                event_handler(
+                    event::Event::WindowEvent {
+                        window_id: RootWindowId(window_id),
+                        event: event::WindowEvent::Resized((properties.w, properties.h).into()),
+                    },
+                    &self.window_target,
+                );

-                // Send moved event on create to indicate first position.
-                let event = event::WindowEvent::Moved((properties.x, properties.y).into());
-                app.window_event(&self.window_target, window_id, event);
+                // Send resize event on create to indicate first position.
+                event_handler(
+                    event::Event::WindowEvent {
+                        window_id: RootWindowId(window_id),
+                        event: event::WindowEvent::Moved((properties.x, properties.y).into()),
+                    },
+                    &self.window_target,
+                );
            }

            // Handle window destroys.
@@ -540,8 +552,14 @@ impl EventLoop {
                let mut destroys = self.window_target.p.destroys.lock().unwrap();
                destroys.pop_front()
            } {
-                let window_id = RootWindowId(destroy_id);
-                app.window_event(&self.window_target, window_id, event::WindowEvent::Destroyed);
+                event_handler(
+                    event::Event::WindowEvent {
+                        window_id: RootWindowId(destroy_id),
+                        event: event::WindowEvent::Destroyed,
+                    },
+                    &self.window_target,
+                );
+
                self.windows.retain(|(window, _event_state)| window.fd as u64 != destroy_id.fd);
            }

@@ -568,8 +586,7 @@ impl EventLoop {
                        window_id,
                        orbital_event.to_option(),
                        event_state,
-                        &self.window_target,
-                        app,
+                        |event| event_handler(event, &self.window_target),
                    );
                }

@@ -596,8 +613,8 @@ impl EventLoop {
                i += 1;
            }

-            while self.user_events_receiver.try_recv().is_ok() {
-                app.proxy_wake_up(&self.window_target);
+            while let Ok(event) = self.user_events_receiver.try_recv() {
+                event_handler(event::Event::UserEvent(event), &self.window_target);
            }

            // To avoid deadlocks the redraws lock is not held during event processing.
@@ -605,14 +622,16 @@ impl EventLoop {
                let mut redraws = self.window_target.p.redraws.lock().unwrap();
                redraws.pop_front()
            } {
-                app.window_event(
+                event_handler(
+                    event::Event::WindowEvent {
+                        window_id: RootWindowId(window_id),
+                        event: event::WindowEvent::RedrawRequested,
+                    },
                    &self.window_target,
-                    RootWindowId(window_id),
-                    event::WindowEvent::RedrawRequested,
                );
            }

-            app.about_to_wait(&self.window_target);
+            event_handler(event::Event::AboutToWait, &self.window_target);

            if self.window_target.p.exiting() {
                break;
@@ -676,7 +695,7 @@ impl EventLoop {
            }
        }

-        app.exiting(&self.window_target);
+        event_handler(event::Event::LoopExiting, &self.window_target);

        Ok(())
    }
@@ -685,7 +704,7 @@ impl EventLoop {
        &self.window_target
    }

-    pub fn create_proxy(&self) -> EventLoopProxy {
+    pub fn create_proxy(&self) -> EventLoopProxy<T> {
        EventLoopProxy {
            user_events_sender: self.user_events_sender.clone(),
            wake_socket: self.window_target.p.wake_socket.clone(),
@@ -693,22 +712,24 @@ impl EventLoop {
    }
 }

-pub struct EventLoopProxy {
-    user_events_sender: mpsc::SyncSender<()>,
+pub struct EventLoopProxy<T: 'static> {
+    user_events_sender: mpsc::Sender<T>,
    wake_socket: Arc<TimeSocket>,
 }

-impl EventLoopProxy {
-    pub fn wake_up(&self) {
-        // When we fail to send the event it means that we haven't woken up to read the previous
-        // event.
-        if self.user_events_sender.try_send(()).is_ok() {
-            self.wake_socket.wake().unwrap();
-        }
+impl<T> EventLoopProxy<T> {
+    pub fn send_event(&self, event: T) -> Result<(), event_loop::EventLoopClosed<T>> {
+        self.user_events_sender
+            .send(event)
+            .map_err(|mpsc::SendError(x)| event_loop::EventLoopClosed(x))?;
+
+        self.wake_socket.wake().unwrap();
+
+        Ok(())
    }
 }

-impl Clone for EventLoopProxy {
+impl<T> Clone for EventLoopProxy<T> {
    fn clone(&self) -> Self {
        Self {
            user_events_sender: self.user_events_sender.clone(),
@@ -717,7 +738,7 @@ impl Clone for EventLoopProxy {
    }
 }

-impl Unpin for EventLoopProxy {}
+impl<T> Unpin for EventLoopProxy<T> {}

 pub struct ActiveEventLoop {
    control_flow: Cell<ControlFlow>,
@@ -754,6 +775,11 @@ impl ActiveEventLoop {
        rwh_05::RawDisplayHandle::Orbital(rwh_05::OrbitalDisplayHandle::empty())
    }

+    #[inline]
+    pub fn system_theme(&self) -> Option<Theme> {
+        None
+    }
+
    #[cfg(feature = "rwh_06")]
    #[inline]
    pub fn raw_display_handle_rwh_06(
--- a/src/platform_impl/orbital/mod.rs
+++ b/src/platform_impl/orbital/mod.rs
@@ -154,7 +154,7 @@ impl<'a> WindowProperties<'a> {
    }
 }

-impl<'a> fmt::Display for WindowProperties<'a> {
+impl fmt::Display for WindowProperties<'_> {
    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
        write!(
            f,
--- a/src/platform_impl/web/async/channel.rs
+++ b/src/platform_impl/web/async/channel.rs
@@ -1,7 +1,8 @@
 use std::future;
+use std::rc::Rc;
 use std::sync::atomic::{AtomicBool, Ordering};
 use std::sync::mpsc::{self, RecvError, SendError, TryRecvError};
-use std::sync::Arc;
+use std::sync::{Arc, Mutex};
 use std::task::Poll;

 use super::AtomicWaker;
@@ -10,35 +11,54 @@ pub fn channel<T>() -> (Sender<T>, Receiver<T>) {
    let (sender, receiver) = mpsc::channel();
    let shared = Arc::new(Shared { closed: AtomicBool::new(false), waker: AtomicWaker::new() });

-    let sender = Sender { sender, shared: Arc::clone(&shared) };
-    let receiver = Receiver { receiver, shared };
+    let sender =
+        Sender(Arc::new(SenderInner { sender: Mutex::new(sender), shared: Arc::clone(&shared) }));
+    let receiver = Receiver { receiver: Rc::new(receiver), shared };

    (sender, receiver)
 }

-pub struct Sender<T> {
-    sender: mpsc::Sender<T>,
+pub struct Sender<T>(Arc<SenderInner<T>>);
+
+struct SenderInner<T> {
+    // We need to wrap it into a `Mutex` to make it `Sync`. So the sender can't
+    // be accessed on the main thread, as it could block. Additionally we need
+    // to wrap `Sender` in an `Arc` to make it cloneable on the main thread without
+    // having to block.
+    sender: Mutex<mpsc::Sender<T>>,
    shared: Arc<Shared>,
 }

 impl<T> Sender<T> {
    pub fn send(&self, event: T) -> Result<(), SendError<T>> {
-        self.sender.send(event)?;
-        self.shared.waker.wake();
+        self.0.sender.lock().unwrap().send(event)?;
+        self.0.shared.waker.wake();

        Ok(())
    }
 }

-impl<T> Drop for Sender<T> {
-    fn drop(&mut self) {
+impl<T> SenderInner<T> {
+    fn close(&self) {
        self.shared.closed.store(true, Ordering::Relaxed);
        self.shared.waker.wake();
    }
 }

+impl<T> Clone for Sender<T> {
+    fn clone(&self) -> Self {
+        Self(Arc::clone(&self.0))
+    }
+}
+
+impl<T> Drop for SenderInner<T> {
+    fn drop(&mut self) {
+        self.close();
+    }
+}
+
 pub struct Receiver<T> {
-    receiver: mpsc::Receiver<T>,
+    receiver: Rc<mpsc::Receiver<T>>,
    shared: Arc<Shared>,
 }

@@ -75,6 +95,18 @@ impl<T> Receiver<T> {
    }
 }

+impl<T> Clone for Receiver<T> {
+    fn clone(&self) -> Self {
+        Self { receiver: Rc::clone(&self.receiver), shared: Arc::clone(&self.shared) }
+    }
+}
+
+impl<T> Drop for Receiver<T> {
+    fn drop(&mut self) {
+        self.shared.closed.store(true, Ordering::Relaxed);
+    }
+}
+
 struct Shared {
    closed: AtomicBool,
    waker: AtomicWaker,
--- a/src/platform_impl/web/async/dispatcher.rs
+++ b/src/platform_impl/web/async/dispatcher.rs
@@ -1,10 +1,9 @@
 use super::super::main_thread::MainThreadMarker;
 use super::{channel, Receiver, Sender, Wrapper};
 use std::cell::Ref;
-use std::rc::Rc;
 use std::sync::{Arc, Condvar, Mutex};

-pub struct Dispatcher<T: 'static>(Wrapper<T, Arc<Sender<Closure<T>>>, Closure<T>>);
+pub struct Dispatcher<T: 'static>(Wrapper<T, Sender<Closure<T>>, Closure<T>>);

 struct Closure<T>(Box<dyn FnOnce(&T) + Send>);

@@ -12,8 +11,6 @@ impl<T> Dispatcher<T> {
    #[track_caller]
    pub fn new(main_thread: MainThreadMarker, value: T) -> Option<(Self, DispatchRunner<T>)> {
        let (sender, receiver) = channel::<Closure<T>>();
-        let sender = Arc::new(sender);
-        let receiver = Rc::new(receiver);

        Wrapper::new(
            main_thread,
@@ -24,7 +21,7 @@ impl<T> Dispatcher<T> {
                closure(value.borrow().as_ref().unwrap())
            },
            {
-                let receiver = Rc::clone(&receiver);
+                let receiver = receiver.clone();
                move |value| async move {
                    while let Ok(Closure(closure)) = receiver.next().await {
                        // SAFETY: The given `Closure` here isn't really `'static`, so we shouldn't
@@ -92,8 +89,8 @@ impl<T> Dispatcher<T> {
 }

 pub struct DispatchRunner<T: 'static> {
-    wrapper: Wrapper<T, Arc<Sender<Closure<T>>>, Closure<T>>,
-    receiver: Rc<Receiver<Closure<T>>>,
+    wrapper: Wrapper<T, Sender<Closure<T>>, Closure<T>>,
+    receiver: Receiver<Closure<T>>,
 }

 impl<T> DispatchRunner<T> {
--- a/src/platform_impl/web/async/waker.rs
+++ b/src/platform_impl/web/async/waker.rs
@@ -1,18 +1,19 @@
 use std::future;
-use std::sync::atomic::{AtomicBool, Ordering};
+use std::num::NonZeroUsize;
+use std::sync::atomic::{AtomicBool, AtomicUsize, Ordering};
 use std::sync::Arc;
 use std::task::Poll;

 use super::super::main_thread::MainThreadMarker;
 use super::{AtomicWaker, Wrapper};

-pub struct WakerSpawner<T: 'static>(Wrapper<Handler<T>, Sender, ()>);
+pub struct WakerSpawner<T: 'static>(Wrapper<Handler<T>, Sender, NonZeroUsize>);

-pub struct Waker<T: 'static>(Wrapper<Handler<T>, Sender, ()>);
+pub struct Waker<T: 'static>(Wrapper<Handler<T>, Sender, NonZeroUsize>);

 struct Handler<T> {
    value: T,
-    handler: fn(&T, bool),
+    handler: fn(&T, NonZeroUsize, bool),
 }

 #[derive(Clone)]
@@ -20,9 +21,13 @@ struct Sender(Arc<Inner>);

 impl<T> WakerSpawner<T> {
    #[track_caller]
-    pub fn new(main_thread: MainThreadMarker, value: T, handler: fn(&T, bool)) -> Option<Self> {
+    pub fn new(
+        main_thread: MainThreadMarker,
+        value: T,
+        handler: fn(&T, NonZeroUsize, bool),
+    ) -> Option<Self> {
        let inner = Arc::new(Inner {
-            awoken: AtomicBool::new(false),
+            counter: AtomicUsize::new(0),
            waker: AtomicWaker::new(),
            closed: AtomicBool::new(false),
        });
@@ -34,43 +39,49 @@ impl<T> WakerSpawner<T> {
        let wrapper = Wrapper::new(
            main_thread,
            handler,
-            |handler, _| {
+            |handler, count| {
                let handler = handler.borrow();
                let handler = handler.as_ref().unwrap();
-                (handler.handler)(&handler.value, true);
+                (handler.handler)(&handler.value, count, true);
            },
            {
                let inner = Arc::clone(&inner);

                move |handler| async move {
-                    while future::poll_fn(|cx| {
-                        if inner.awoken.swap(false, Ordering::Relaxed) {
-                            Poll::Ready(true)
-                        } else {
-                            inner.waker.register(cx.waker());
+                    while let Some(count) = future::poll_fn(|cx| {
+                        let count = inner.counter.swap(0, Ordering::Relaxed);

-                            if inner.awoken.swap(false, Ordering::Relaxed) {
-                                Poll::Ready(true)
-                            } else {
-                                if inner.closed.load(Ordering::Relaxed) {
-                                    return Poll::Ready(false);
+                        match NonZeroUsize::new(count) {
+                            Some(count) => Poll::Ready(Some(count)),
+                            None => {
+                                inner.waker.register(cx.waker());
+
+                                let count = inner.counter.swap(0, Ordering::Relaxed);
+
+                                match NonZeroUsize::new(count) {
+                                    Some(count) => Poll::Ready(Some(count)),
+                                    None => {
+                                        if inner.closed.load(Ordering::Relaxed) {
+                                            return Poll::Ready(None);
+                                        }
+
+                                        Poll::Pending
+                                    },
                                }
-
-                                Poll::Pending
-                            }
+                            },
                        }
                    })
                    .await
                    {
                        let handler = handler.borrow();
                        let handler = handler.as_ref().unwrap();
-                        (handler.handler)(&handler.value, false);
+                        (handler.handler)(&handler.value, count, false);
                    }
                }
            },
            sender,
            |inner, _| {
-                inner.0.awoken.store(true, Ordering::Relaxed);
+                inner.0.counter.fetch_add(1, Ordering::Relaxed);
                inner.0.waker.wake();
            },
        )?;
@@ -82,13 +93,13 @@ impl<T> WakerSpawner<T> {
        Waker(self.0.clone())
    }

-    pub fn take(&self) -> bool {
+    pub fn fetch(&self) -> usize {
        debug_assert!(
            MainThreadMarker::new().is_some(),
            "this should only be called from the main thread"
        );

-        self.0.with_sender_data(|inner| inner.0.awoken.swap(false, Ordering::Relaxed))
+        self.0.with_sender_data(|inner| inner.0.counter.swap(0, Ordering::Relaxed))
    }
 }

@@ -103,7 +114,7 @@ impl<T> Drop for WakerSpawner<T> {

 impl<T> Waker<T> {
    pub fn wake(&self) {
-        self.0.send(())
+        self.0.send(NonZeroUsize::MIN)
    }
 }

@@ -114,7 +125,7 @@ impl<T> Clone for Waker<T> {
 }

 struct Inner {
-    awoken: AtomicBool,
+    counter: AtomicUsize,
    waker: AtomicWaker,
    closed: AtomicBool,
 }
--- a/src/platform_impl/web/cursor.rs
+++ b/src/platform_impl/web/cursor.rs
@@ -542,8 +542,8 @@ fn from_rgba(
    //
    // We call `createImageBitmap()` before spawning the future,
    // to not have to clone the image buffer.
-    let mut options = ImageBitmapOptions::new();
-    options.premultiply_alpha(PremultiplyAlpha::None);
+    let options = ImageBitmapOptions::new();
+    options.set_premultiply_alpha(PremultiplyAlpha::None);
    let bitmap = JsFuture::from(
        window
            .create_image_bitmap_with_image_data_and_image_bitmap_options(&image_data, &options)
--- a/src/platform_impl/web/device.rs
+++ b/src/platform_impl/web/device.rs
@@ -2,7 +2,7 @@
 pub struct DeviceId(pub i32);

 impl DeviceId {
-    pub const unsafe fn dummy() -> Self {
+    pub const fn dummy() -> Self {
        Self(0)
    }
 }
--- a/src/platform_impl/web/event_loop/mod.rs
+++ b/src/platform_impl/web/event_loop/mod.rs
@@ -1,6 +1,6 @@
 use std::marker::PhantomData;
+use std::sync::mpsc::{self, Receiver, Sender};

-use crate::application::ApplicationHandler;
 use crate::error::EventLoopError;
 use crate::event::Event;
 use crate::event_loop::ActiveEventLoop as RootActiveEventLoop;
@@ -16,30 +16,48 @@ mod window_target;
 pub(crate) use proxy::EventLoopProxy;
 pub(crate) use window_target::{ActiveEventLoop, OwnedDisplayHandle};

-pub struct EventLoop {
+pub struct EventLoop<T: 'static> {
    elw: RootActiveEventLoop,
+    user_event_sender: Sender<T>,
+    user_event_receiver: Receiver<T>,
 }

 #[derive(Default, Debug, Copy, Clone, PartialEq, Eq, Hash)]
 pub(crate) struct PlatformSpecificEventLoopAttributes {}

-impl EventLoop {
+impl<T> EventLoop<T> {
    pub(crate) fn new(_: &PlatformSpecificEventLoopAttributes) -> Result<Self, EventLoopError> {
+        let (user_event_sender, user_event_receiver) = mpsc::channel();
        let elw = RootActiveEventLoop { p: ActiveEventLoop::new(), _marker: PhantomData };
-        Ok(EventLoop { elw })
+        Ok(EventLoop { elw, user_event_sender, user_event_receiver })
    }

-    pub fn run_app<A: ApplicationHandler>(self, app: &mut A) -> ! {
+    pub fn run<F>(self, mut event_handler: F) -> !
+    where
+        F: FnMut(Event<T>, &RootActiveEventLoop),
+    {
        let target = RootActiveEventLoop { p: self.elw.p.clone(), _marker: PhantomData };

        // SAFETY: Don't use `move` to make sure we leak the `event_handler` and `target`.
-        let handler: Box<dyn FnMut(Event)> = Box::new(|event| handle_event(app, &target, event));
-
+        let handler: Box<dyn FnMut(Event<()>)> = Box::new(|event| {
+            let event = match event.map_nonuser_event() {
+                Ok(event) => event,
+                Err(Event::UserEvent(())) => Event::UserEvent(
+                    self.user_event_receiver
+                        .try_recv()
+                        .expect("handler woken up without user event"),
+                ),
+                Err(_) => unreachable!(),
+            };
+            event_handler(event, &target)
+        });
        // SAFETY: The `transmute` is necessary because `run()` requires `'static`. This is safe
        // because this function will never return and all resources not cleaned up by the point we
        // `throw` will leak, making this actually `'static`.
        let handler = unsafe {
-            std::mem::transmute::<Box<dyn FnMut(Event)>, Box<dyn FnMut(Event) + 'static>>(handler)
+            std::mem::transmute::<Box<dyn FnMut(Event<()>)>, Box<dyn FnMut(Event<()>) + 'static>>(
+                handler,
+            )
        };
        self.elw.p.run(handler, false);

@@ -52,14 +70,31 @@ impl EventLoop {
        unreachable!();
    }

-    pub fn spawn_app<A: ApplicationHandler + 'static>(self, mut app: A) {
+    pub fn spawn<F>(self, mut event_handler: F)
+    where
+        F: 'static + FnMut(Event<T>, &RootActiveEventLoop),
+    {
        let target = RootActiveEventLoop { p: self.elw.p.clone(), _marker: PhantomData };

-        self.elw.p.run(Box::new(move |event| handle_event(&mut app, &target, event)), true);
+        self.elw.p.run(
+            Box::new(move |event| {
+                let event = match event.map_nonuser_event() {
+                    Ok(event) => event,
+                    Err(Event::UserEvent(())) => Event::UserEvent(
+                        self.user_event_receiver
+                            .try_recv()
+                            .expect("handler woken up without user event"),
+                    ),
+                    Err(_) => unreachable!(),
+                };
+                event_handler(event, &target)
+            }),
+            true,
+        );
    }

-    pub fn create_proxy(&self) -> EventLoopProxy {
-        EventLoopProxy::new(self.elw.p.waker())
+    pub fn create_proxy(&self) -> EventLoopProxy<T> {
+        EventLoopProxy::new(self.elw.p.waker(), self.user_event_sender.clone())
    }

    pub fn window_target(&self) -> &RootActiveEventLoop {
@@ -82,17 +117,3 @@ impl EventLoop {
        self.elw.wait_until_strategy()
    }
 }
-
-fn handle_event<A: ApplicationHandler>(app: &mut A, target: &RootActiveEventLoop, event: Event) {
-    match event {
-        Event::NewEvents(cause) => app.new_events(target, cause),
-        Event::WindowEvent { window_id, event } => app.window_event(target, window_id, event),
-        Event::DeviceEvent { device_id, event } => app.device_event(target, device_id, event),
-        Event::UserWakeUp => app.proxy_wake_up(target),
-        Event::Suspended => app.suspended(target),
-        Event::Resumed => app.resumed(target),
-        Event::AboutToWait => app.about_to_wait(target),
-        Event::LoopExiting => app.exiting(target),
-        Event::MemoryWarning => app.memory_warning(target),
-    }
-}
--- a/src/platform_impl/web/event_loop/proxy.rs
+++ b/src/platform_impl/web/event_loop/proxy.rs
@@ -1,19 +1,29 @@
 use std::rc::Weak;
+use std::sync::mpsc::{SendError, Sender};

 use super::runner::Execution;
+use crate::event_loop::EventLoopClosed;
 use crate::platform_impl::platform::r#async::Waker;

-#[derive(Clone)]
-pub struct EventLoopProxy {
+pub struct EventLoopProxy<T: 'static> {
    runner: Waker<Weak<Execution>>,
+    sender: Sender<T>,
 }

-impl EventLoopProxy {
-    pub fn new(runner: Waker<Weak<Execution>>) -> Self {
-        Self { runner }
+impl<T: 'static> EventLoopProxy<T> {
+    pub fn new(runner: Waker<Weak<Execution>>, sender: Sender<T>) -> Self {
+        Self { runner, sender }
    }

-    pub fn wake_up(&self) {
+    pub fn send_event(&self, event: T) -> Result<(), EventLoopClosed<T>> {
+        self.sender.send(event).map_err(|SendError(event)| EventLoopClosed(event))?;
        self.runner.wake();
+        Ok(())
+    }
+}
+
+impl<T: 'static> Clone for EventLoopProxy<T> {
+    fn clone(&self) -> Self {
+        Self { runner: self.runner.clone(), sender: self.sender.clone() }
    }
 }
--- a/src/platform_impl/web/event_loop/runner.rs
+++ b/src/platform_impl/web/event_loop/runner.rs
@@ -1,3 +1,15 @@
+use std::cell::{Cell, RefCell};
+use std::collections::{HashSet, VecDeque};
+use std::iter;
+use std::num::NonZeroUsize;
+use std::ops::Deref;
+use std::rc::{Rc, Weak};
+
+use wasm_bindgen::prelude::Closure;
+use wasm_bindgen::JsCast;
+use web_sys::{Document, KeyboardEvent, PageTransitionEvent, PointerEvent, WheelEvent};
+use web_time::{Duration, Instant};
+
 use super::super::main_thread::MainThreadMarker;
 use super::super::DeviceId;
 use super::backend;
@@ -14,20 +26,9 @@ use crate::platform_impl::platform::r#async::{DispatchRunner, Waker, WakerSpawne
 use crate::platform_impl::platform::window::Inner;
 use crate::window::WindowId;

-use js_sys::Function;
-use std::cell::{Cell, RefCell};
-use std::collections::{HashSet, VecDeque};
-use std::iter;
-use std::ops::Deref;
-use std::rc::{Rc, Weak};
-use wasm_bindgen::prelude::{wasm_bindgen, Closure};
-use wasm_bindgen::JsCast;
-use web_sys::{Document, KeyboardEvent, PageTransitionEvent, PointerEvent, WheelEvent};
-use web_time::{Duration, Instant};
-
 pub struct Shared(Rc<Execution>);

-pub(super) type EventHandler = dyn FnMut(Event);
+pub(super) type EventHandler = dyn FnMut(Event<()>);

 impl Clone for Shared {
    fn clone(&self) -> Self {
@@ -136,12 +137,13 @@ impl Shared {
        let document = window.document().expect("Failed to obtain document");

        Shared(Rc::<Execution>::new_cyclic(|weak| {
-            let proxy_spawner = WakerSpawner::new(main_thread, weak.clone(), |runner, local| {
-                if let Some(runner) = runner.upgrade() {
-                    Shared(runner).send_proxy_wake_up(local);
-                }
-            })
-            .expect("`EventLoop` has to be created in the main thread");
+            let proxy_spawner =
+                WakerSpawner::new(main_thread, weak.clone(), |runner, count, local| {
+                    if let Some(runner) = runner.upgrade() {
+                        Shared(runner).send_user_events(count, local)
+                    }
+                })
+                .expect("`EventLoop` has to be created in the main thread");

            Execution {
                main_thread,
@@ -201,7 +203,7 @@ impl Shared {
    // Set the event callback to use for the event loop runner
    // This the event callback is a fairly thin layer over the user-provided callback that closes
    // over a RootActiveEventLoop reference
-    pub(crate) fn set_listener(&self, event_handler: Box<EventHandler>) {
+    pub fn set_listener(&self, event_handler: Box<EventHandler>) {
        {
            let mut runner = self.0.runner.borrow_mut();
            assert!(matches!(*runner, RunnerEnum::Pending));
@@ -243,21 +245,10 @@ impl Shared {
                    return;
                }

-                let pointer_type = event.pointer_type();
-
-                if pointer_type != "mouse" {
-                    return;
-                }
-
                // chorded button event
                let device_id = RootDeviceId(DeviceId(event.pointer_id()));

                if let Some(button) = backend::event::mouse_button(&event) {
-                    debug_assert_eq!(
-                        pointer_type, "mouse",
-                        "expect pointer type of a chorded button event to be a mouse"
-                    );
-
                    let state = if backend::event::mouse_buttons(&event).contains(button.into()) {
                        ElementState::Pressed
                    } else {
@@ -321,10 +312,6 @@ impl Shared {
                    return;
                }

-                if event.pointer_type() != "mouse" {
-                    return;
-                }
-
                let button = backend::event::mouse_button(&event).expect("no mouse button pressed");
                runner.send_event(Event::DeviceEvent {
                    device_id: RootDeviceId(DeviceId(event.pointer_id())),
@@ -344,10 +331,6 @@ impl Shared {
                    return;
                }

-                if event.pointer_type() != "mouse" {
-                    return;
-                }
-
                let button = backend::event::mouse_button(&event).expect("no mouse button pressed");
                runner.send_event(Event::DeviceEvent {
                    device_id: RootDeviceId(DeviceId(event.pointer_id())),
@@ -368,7 +351,7 @@ impl Shared {
                }

                runner.send_event(Event::DeviceEvent {
-                    device_id: RootDeviceId(unsafe { DeviceId::dummy() }),
+                    device_id: RootDeviceId(DeviceId::dummy()),
                    event: DeviceEvent::Key(RawKeyEvent {
                        physical_key: backend::event::key_code(&event),
                        state: ElementState::Pressed,
@@ -386,7 +369,7 @@ impl Shared {
                }

                runner.send_event(Event::DeviceEvent {
-                    device_id: RootDeviceId(unsafe { DeviceId::dummy() }),
+                    device_id: RootDeviceId(DeviceId::dummy()),
                    event: DeviceEvent::Key(RawKeyEvent {
                        physical_key: backend::event::key_code(&event),
                        state: ElementState::Released,
@@ -464,11 +447,11 @@ impl Shared {
        self.send_events(iter::once(event));
    }

-    // Add a user event to the event loop runner.
+    // Add a series of user events to the event loop runner
    //
    // This will schedule the event loop to wake up instead of waking it up immediately if its not
    // running.
-    pub(crate) fn send_proxy_wake_up(&self, local: bool) {
+    pub(crate) fn send_user_events(&self, count: NonZeroUsize, local: bool) {
        // If the event loop is closed, it should discard any new events
        if self.is_closed() {
            return;
@@ -479,18 +462,14 @@ impl Shared {
            if let Ok(RunnerEnum::Running(_)) =
                self.0.runner.try_borrow().as_ref().map(Deref::deref)
            {
-                #[wasm_bindgen]
-                extern "C" {
-                    #[wasm_bindgen(js_name = queueMicrotask)]
-                    fn queue_microtask(task: Function);
-                }
-
-                queue_microtask(
-                    Closure::once_into_js({
+                self.window().queue_microtask(
+                    &Closure::once_into_js({
                        let this = Rc::downgrade(&self.0);
                        move || {
                            if let Some(shared) = this.upgrade() {
-                                Shared(shared).send_event(Event::UserWakeUp)
+                                Shared(shared).send_events(
+                                    iter::repeat(Event::UserEvent(())).take(count.get()),
+                                )
                            }
                        }
                    })
@@ -501,7 +480,7 @@ impl Shared {
            }
        }

-        self.send_event(Event::UserWakeUp);
+        self.send_events(iter::repeat(Event::UserEvent(())).take(count.get()))
    }

    // Add a series of events to the event loop runner
@@ -515,8 +494,13 @@ impl Shared {
        // If we can run the event processing right now, or need to queue this and wait for later
        let mut process_immediately = true;
        match self.0.runner.try_borrow().as_ref().map(Deref::deref) {
-            // If the runner is attached but not running, we always wake it up.
-            Ok(RunnerEnum::Running(_)) => (),
+            Ok(RunnerEnum::Running(ref runner)) => {
+                // If we're currently polling, queue this and wait for the poll() method to be
+                // called.
+                if let State::Poll { .. } = runner.state {
+                    process_immediately = false;
+                }
+            },
            Ok(RunnerEnum::Pending) => {
                // The runner still hasn't been attached: queue this event and wait for it to be
                process_immediately = false;
@@ -644,10 +628,8 @@ impl Shared {

                // Pre-fetch `UserEvent`s to avoid having to wait until the next event loop cycle.
                events.extend(
-                    self.0
-                        .proxy_spawner
-                        .take()
-                        .then_some(Event::UserWakeUp)
+                    iter::repeat(Event::UserEvent(()))
+                        .take(self.0.proxy_spawner.fetch())
                        .map(EventWrapper::from),
                );

@@ -735,7 +717,7 @@ impl Shared {
        //     * The `register_redraw_request` closure.
        //     * The `destroy_fn` closure.
        if self.0.event_loop_recreation.get() {
-            crate::event_loop::EventLoopBuilder::allow_event_loop_recreation();
+            crate::event_loop::EventLoopBuilder::<()>::allow_event_loop_recreation();
        }
    }

@@ -815,12 +797,12 @@ impl Shared {
 }

 pub(crate) enum EventWrapper {
-    Event(Event),
+    Event(Event<()>),
    ScaleChange { canvas: Weak<RefCell<backend::Canvas>>, size: PhysicalSize<u32>, scale: f64 },
 }

-impl From<Event> for EventWrapper {
-    fn from(value: Event) -> Self {
+impl From<Event<()>> for EventWrapper {
+    fn from(value: Event<()>) -> Self {
        Self::Event(value)
    }
 }
--- a/src/platform_impl/web/event_loop/window_target.rs
+++ b/src/platform_impl/web/event_loop/window_target.rs
@@ -55,11 +55,7 @@ impl ActiveEventLoop {
        Self { runner: runner::Shared::new(), modifiers: ModifiersShared::default() }
    }

-    pub(crate) fn run(
-        &self,
-        event_handler: Box<runner::EventHandler>,
-        event_loop_recreation: bool,
-    ) {
+    pub fn run(&self, event_handler: Box<runner::EventHandler>, event_loop_recreation: bool) {
        self.runner.event_loop_recreation(event_loop_recreation);
        self.runner.set_listener(event_handler);
    }
@@ -146,7 +142,7 @@ impl ActiveEventLoop {
                    }
                });

-                let device_id = RootDeviceId(unsafe { DeviceId::dummy() });
+                let device_id = RootDeviceId(DeviceId::dummy());

                runner.send_events(
                    iter::once(Event::WindowEvent {
@@ -182,7 +178,7 @@ impl ActiveEventLoop {
                    }
                });

-                let device_id = RootDeviceId(unsafe { DeviceId::dummy() });
+                let device_id = RootDeviceId(DeviceId::dummy());

                runner.send_events(
                    iter::once(Event::WindowEvent {
@@ -262,21 +258,6 @@ impl ActiveEventLoop {
        });

        canvas.on_cursor_move(
-            {
-                let runner = self.runner.clone();
-                let has_focus = has_focus.clone();
-                let modifiers = self.modifiers.clone();
-
-                move |active_modifiers| {
-                    if has_focus.get() && modifiers.get() != active_modifiers {
-                        modifiers.set(active_modifiers);
-                        runner.send_event(Event::WindowEvent {
-                            window_id: RootWindowId(id),
-                            event: WindowEvent::ModifiersChanged(active_modifiers.into()),
-                        })
-                    }
-                }
-            },
            {
                let runner = self.runner.clone();
                let has_focus = has_focus.clone();
@@ -376,20 +357,6 @@ impl ActiveEventLoop {
        );

        canvas.on_mouse_press(
-            {
-                let runner = self.runner.clone();
-                let modifiers = self.modifiers.clone();
-
-                move |active_modifiers| {
-                    if modifiers.get() != active_modifiers {
-                        modifiers.set(active_modifiers);
-                        runner.send_event(Event::WindowEvent {
-                            window_id: RootWindowId(id),
-                            event: WindowEvent::ModifiersChanged(active_modifiers.into()),
-                        })
-                    }
-                }
-            },
            {
                let runner = self.runner.clone();
                let modifiers = self.modifiers.clone();
@@ -454,21 +421,6 @@ impl ActiveEventLoop {
        );

        canvas.on_mouse_release(
-            {
-                let runner = self.runner.clone();
-                let has_focus = has_focus.clone();
-                let modifiers = self.modifiers.clone();
-
-                move |active_modifiers| {
-                    if has_focus.get() && modifiers.get() != active_modifiers {
-                        modifiers.set(active_modifiers);
-                        runner.send_event(Event::WindowEvent {
-                            window_id: RootWindowId(id),
-                            event: WindowEvent::ModifiersChanged(active_modifiers.into()),
-                        });
-                    }
-                }
-            },
            {
                let runner = self.runner.clone();
                let has_focus = has_focus.clone();
@@ -609,7 +561,7 @@ impl ActiveEventLoop {
                            window_id: RootWindowId(id),
                            event: WindowEvent::Resized(new_size),
                        });
-                        runner.request_redraw(RootWindowId(id));
+                        canvas.request_animation_frame();
                    }
                }
            },
@@ -662,6 +614,16 @@ impl ActiveEventLoop {
        self.runner.listen_device_events(allowed)
    }

+    pub fn system_theme(&self) -> Option<Theme> {
+        backend::is_dark_mode(self.runner.window()).map(|is_dark_mode| {
+            if is_dark_mode {
+                Theme::Dark
+            } else {
+                Theme::Light
+            }
+        })
+    }
+
    pub(crate) fn set_control_flow(&self, control_flow: ControlFlow) {
        self.runner.set_control_flow(control_flow)
    }
--- a/src/platform_impl/web/web_sys/canvas.rs
+++ b/src/platform_impl/web/web_sys/canvas.rs
@@ -329,51 +329,29 @@ impl Canvas {
        self.pointer_handler.on_cursor_enter(&self.common, handler)
    }

-    pub fn on_mouse_release<MOD, M, T>(
-        &mut self,
-        modifier_handler: MOD,
-        mouse_handler: M,
-        touch_handler: T,
-    ) where
-        MOD: 'static + FnMut(ModifiersState),
+    pub fn on_mouse_release<M, T>(&mut self, mouse_handler: M, touch_handler: T)
+    where
        M: 'static + FnMut(ModifiersState, i32, PhysicalPosition<f64>, MouseButton),
        T: 'static + FnMut(ModifiersState, i32, PhysicalPosition<f64>, Force),
    {
-        self.pointer_handler.on_mouse_release(
-            &self.common,
-            modifier_handler,
-            mouse_handler,
-            touch_handler,
-        )
+        self.pointer_handler.on_mouse_release(&self.common, mouse_handler, touch_handler)
    }

-    pub fn on_mouse_press<MOD, M, T>(
-        &mut self,
-        modifier_handler: MOD,
-        mouse_handler: M,
-        touch_handler: T,
-    ) where
-        MOD: 'static + FnMut(ModifiersState),
+    pub fn on_mouse_press<M, T>(&mut self, mouse_handler: M, touch_handler: T)
+    where
        M: 'static + FnMut(ModifiersState, i32, PhysicalPosition<f64>, MouseButton),
        T: 'static + FnMut(ModifiersState, i32, PhysicalPosition<f64>, Force),
    {
        self.pointer_handler.on_mouse_press(
            &self.common,
-            modifier_handler,
            mouse_handler,
            touch_handler,
            Rc::clone(&self.prevent_default),
        )
    }

-    pub fn on_cursor_move<MOD, M, T, B>(
-        &mut self,
-        modifier_handler: MOD,
-        mouse_handler: M,
-        touch_handler: T,
-        button_handler: B,
-    ) where
-        MOD: 'static + FnMut(ModifiersState),
+    pub fn on_cursor_move<M, T, B>(&mut self, mouse_handler: M, touch_handler: T, button_handler: B)
+    where
        M: 'static + FnMut(ModifiersState, i32, &mut dyn Iterator<Item = PhysicalPosition<f64>>),
        T: 'static
            + FnMut(ModifiersState, i32, &mut dyn Iterator<Item = (PhysicalPosition<f64>, Force)>),
@@ -381,7 +359,6 @@ impl Canvas {
    {
        self.pointer_handler.on_cursor_move(
            &self.common,
-            modifier_handler,
            mouse_handler,
            touch_handler,
            button_handler,
@@ -483,7 +460,7 @@ impl Canvas {
    pub(crate) fn handle_scale_change(
        &self,
        runner: &super::super::event_loop::runner::Shared,
-        event_handler: impl FnOnce(crate::event::Event),
+        event_handler: impl FnOnce(crate::event::Event<()>),
        current_size: PhysicalSize<u32>,
        scale: f64,
    ) {
--- a/src/platform_impl/web/web_sys/event.rs
+++ b/src/platform_impl/web/web_sys/event.rs
@@ -1,13 +1,15 @@
-use crate::dpi::LogicalPosition;
 use crate::event::{MouseButton, MouseScrollDelta};
 use crate::keyboard::{Key, KeyLocation, ModifiersState, NamedKey, PhysicalKey};

+use dpi::{LogicalPosition, PhysicalPosition, Position};
 use smol_str::SmolStr;
 use std::cell::OnceCell;
 use wasm_bindgen::prelude::wasm_bindgen;
 use wasm_bindgen::{JsCast, JsValue};
 use web_sys::{KeyboardEvent, MouseEvent, PointerEvent, WheelEvent};

+use super::Engine;
+
 bitflags::bitflags! {
    // https://www.w3.org/TR/pointerevents3/#the-buttons-property
    #[derive(Debug, Clone, Copy, PartialEq, Eq)]
@@ -95,42 +97,48 @@ pub fn mouse_position(event: &MouseEvent) -> LogicalPosition<f64> {
    LogicalPosition { x: event.offset_x(), y: event.offset_y() }
 }

-// TODO: Remove this when Firefox supports correct movement values in coalesced events.
+// TODO: Remove this when Firefox supports correct movement values in coalesced events and browsers
+// have agreed on what coordinate space `movementX/Y` is using.
 // See <https://bugzilla.mozilla.org/show_bug.cgi?id=1753724>.
-pub struct MouseDelta(Option<MouseDeltaInner>);
-
-pub struct MouseDeltaInner {
-    old_position: LogicalPosition<f64>,
-    old_delta: LogicalPosition<f64>,
+// See <https://github.com/w3c/pointerlock/issues/42>.
+pub enum MouseDelta {
+    Chromium,
+    Gecko { old_position: LogicalPosition<f64>, old_delta: LogicalPosition<f64> },
+    Other,
 }

 impl MouseDelta {
    pub fn init(window: &web_sys::Window, event: &PointerEvent) -> Self {
-        // Firefox has wrong movement values in coalesced events, we will detect that by checking
-        // for `pointerrawupdate` support. Presumably an implementation of `pointerrawupdate`
-        // should require correct movement values, otherwise uncoalesced events might be broken as
-        // well.
-        Self((!has_pointer_raw_support(window) && has_coalesced_events_support(event)).then(|| {
-            MouseDeltaInner {
+        match super::engine(window) {
+            Some(Engine::Chromium) => Self::Chromium,
+            // Firefox has wrong movement values in coalesced events.
+            Some(Engine::Gecko) if has_coalesced_events_support(event) => Self::Gecko {
                old_position: mouse_position(event),
-                old_delta: LogicalPosition {
-                    x: event.movement_x() as f64,
-                    y: event.movement_y() as f64,
-                },
-            }
-        }))
+                old_delta: LogicalPosition::new(
+                    event.movement_x() as f64,
+                    event.movement_y() as f64,
+                ),
+            },
+            _ => Self::Other,
+        }
    }

-    pub fn delta(&mut self, event: &MouseEvent) -> LogicalPosition<f64> {
-        if let Some(inner) = &mut self.0 {
-            let new_position = mouse_position(event);
-            let x = new_position.x - inner.old_position.x + inner.old_delta.x;
-            let y = new_position.y - inner.old_position.y + inner.old_delta.y;
-            inner.old_position = new_position;
-            inner.old_delta = LogicalPosition::new(0., 0.);
-            LogicalPosition::new(x, y)
-        } else {
-            LogicalPosition { x: event.movement_x() as f64, y: event.movement_y() as f64 }
+    pub fn delta(&mut self, event: &MouseEvent) -> Position {
+        match self {
+            MouseDelta::Chromium => {
+                PhysicalPosition::new(event.movement_x(), event.movement_y()).into()
+            },
+            MouseDelta::Gecko { old_position, old_delta } => {
+                let new_position = mouse_position(event);
+                let x = new_position.x - old_position.x + old_delta.x;
+                let y = new_position.y - old_position.y + old_delta.y;
+                *old_position = new_position;
+                *old_delta = LogicalPosition::new(0., 0.);
+                LogicalPosition::new(x, y).into()
+            },
+            MouseDelta::Other => {
+                LogicalPosition::new(event.movement_x(), event.movement_y()).into()
+            },
        }
    }
 }
@@ -238,29 +246,6 @@ pub fn pointer_move_event(event: PointerEvent) -> impl Iterator<Item = PointerEv
    }
 }

-// TODO: Remove when all browsers implement it correctly.
-// See <https://github.com/rust-windowing/winit/issues/2875>.
-pub fn has_pointer_raw_support(window: &web_sys::Window) -> bool {
-    thread_local! {
-        static POINTER_RAW_SUPPORT: OnceCell<bool> = const { OnceCell::new() };
-    }
-
-    POINTER_RAW_SUPPORT.with(|support| {
-        *support.get_or_init(|| {
-            #[wasm_bindgen]
-            extern "C" {
-                type PointerRawSupport;
-
-                #[wasm_bindgen(method, getter, js_name = onpointerrawupdate)]
-                fn has_on_pointerrawupdate(this: &PointerRawSupport) -> JsValue;
-            }
-
-            let support: &PointerRawSupport = window.unchecked_ref();
-            !support.has_on_pointerrawupdate().is_undefined()
-        })
-    })
-}
-
 // TODO: Remove when Safari supports `getCoalescedEvents`.
 // See <https://bugs.webkit.org/show_bug.cgi?id=210454>.
 pub fn has_coalesced_events_support(event: &PointerEvent) -> bool {
--- a/src/platform_impl/web/web_sys/mod.rs
+++ b/src/platform_impl/web/web_sys/mod.rs
@@ -9,6 +9,8 @@ mod pointer;
 mod resize_scaling;
 mod schedule;

+use std::sync::OnceLock;
+
 pub use self::canvas::{Canvas, Style};
 pub use self::event::ButtonsState;
 pub use self::event_handle::EventListenerHandle;
@@ -16,8 +18,13 @@ pub use self::resize_scaling::ResizeScaleHandle;
 pub use self::schedule::Schedule;

 use crate::dpi::{LogicalPosition, LogicalSize};
+use js_sys::Array;
 use wasm_bindgen::closure::Closure;
-use web_sys::{Document, HtmlCanvasElement, PageTransitionEvent, VisibilityState};
+use wasm_bindgen::prelude::wasm_bindgen;
+use wasm_bindgen::JsCast;
+use web_sys::{
+    Document, HtmlCanvasElement, Navigator, PageTransitionEvent, VisibilityState, Window,
+};

 pub fn throw(msg: &str) {
    wasm_bindgen::throw_str(msg);
@@ -158,3 +165,69 @@ pub fn is_visible(document: &Document) -> bool {
 }

 pub type RawCanvasType = HtmlCanvasElement;
+
+#[derive(Clone, Copy)]
+pub enum Engine {
+    Chromium,
+    Gecko,
+    WebKit,
+}
+
+pub fn engine(window: &Window) -> Option<Engine> {
+    static ENGINE: OnceLock<Option<Engine>> = OnceLock::new();
+
+    #[wasm_bindgen]
+    extern "C" {
+        #[wasm_bindgen(extends = Navigator)]
+        type NavigatorExt;
+
+        #[wasm_bindgen(method, getter, js_name = userAgentData)]
+        fn user_agent_data(this: &NavigatorExt) -> Option<NavigatorUaData>;
+
+        type NavigatorUaData;
+
+        #[wasm_bindgen(method, getter)]
+        fn brands(this: &NavigatorUaData) -> Array;
+
+        type NavigatorUaBrandVersion;
+
+        #[wasm_bindgen(method, getter)]
+        fn brand(this: &NavigatorUaBrandVersion) -> String;
+    }
+
+    *ENGINE.get_or_init(|| {
+        let navigator: NavigatorExt = window.navigator().unchecked_into();
+
+        if let Some(data) = navigator.user_agent_data() {
+            for brand in data
+                .brands()
+                .iter()
+                .map(NavigatorUaBrandVersion::unchecked_from_js)
+                .map(|brand| brand.brand())
+            {
+                match brand.as_str() {
+                    "Chromium" => return Some(Engine::Chromium),
+                    // TODO: verify when Firefox actually implements it.
+                    "Gecko" => return Some(Engine::Gecko),
+                    // TODO: verify when Safari actually implements it.
+                    "WebKit" => return Some(Engine::WebKit),
+                    _ => (),
+                }
+            }
+
+            None
+        } else {
+            let data = navigator.user_agent().ok()?;
+
+            if data.contains("Chrome/") {
+                Some(Engine::Chromium)
+            } else if data.contains("Gecko/") {
+                Some(Engine::Gecko)
+            } else if data.contains("AppleWebKit/") {
+                Some(Engine::WebKit)
+            } else {
+                None
+            }
+        }
+    })
+}
--- a/src/platform_impl/web/web_sys/pointer.rs
+++ b/src/platform_impl/web/web_sys/pointer.rs
@@ -44,7 +44,7 @@ impl PointerHandler {
                // touch events are handled separately
                // handling them here would produce duplicate mouse events, inconsistent with
                // other platforms.
-                let pointer_id = (event.pointer_type() == "mouse").then(|| event.pointer_id());
+                let pointer_id = (event.pointer_type() != "touch").then(|| event.pointer_id());

                handler(modifiers, pointer_id);
            }));
@@ -61,20 +61,18 @@ impl PointerHandler {
                // touch events are handled separately
                // handling them here would produce duplicate mouse events, inconsistent with
                // other platforms.
-                let pointer_id = (event.pointer_type() == "mouse").then(|| event.pointer_id());
+                let pointer_id = (event.pointer_type() != "touch").then(|| event.pointer_id());

                handler(modifiers, pointer_id);
            }));
    }

-    pub fn on_mouse_release<MOD, M, T>(
+    pub fn on_mouse_release<M, T>(
        &mut self,
        canvas_common: &Common,
-        mut modifier_handler: MOD,
        mut mouse_handler: M,
        mut touch_handler: T,
    ) where
-        MOD: 'static + FnMut(ModifiersState),
        M: 'static + FnMut(ModifiersState, i32, PhysicalPosition<f64>, MouseButton),
        T: 'static + FnMut(ModifiersState, i32, PhysicalPosition<f64>, Force),
    {
@@ -90,26 +88,23 @@ impl PointerHandler {
                        event::mouse_position(&event).to_physical(super::scale_factor(&window)),
                        Force::Normalized(event.pressure() as f64),
                    ),
-                    "mouse" => mouse_handler(
+                    _ => mouse_handler(
                        modifiers,
                        event.pointer_id(),
                        event::mouse_position(&event).to_physical(super::scale_factor(&window)),
                        event::mouse_button(&event).expect("no mouse button released"),
                    ),
-                    _ => modifier_handler(modifiers),
                }
            }));
    }

-    pub fn on_mouse_press<MOD, M, T>(
+    pub fn on_mouse_press<M, T>(
        &mut self,
        canvas_common: &Common,
-        mut modifier_handler: MOD,
        mut mouse_handler: M,
        mut touch_handler: T,
        prevent_default: Rc<Cell<bool>>,
    ) where
-        MOD: 'static + FnMut(ModifiersState),
        M: 'static + FnMut(ModifiersState, i32, PhysicalPosition<f64>, MouseButton),
        T: 'static + FnMut(ModifiersState, i32, PhysicalPosition<f64>, Force),
    {
@@ -125,8 +120,9 @@ impl PointerHandler {
                }

                let modifiers = event::mouse_modifiers(&event);
+                let pointer_type = &event.pointer_type();

-                match event.pointer_type().as_str() {
+                match pointer_type.as_str() {
                    "touch" => {
                        touch_handler(
                            modifiers,
@@ -135,7 +131,7 @@ impl PointerHandler {
                            Force::Normalized(event.pressure() as f64),
                        );
                    },
-                    "mouse" => {
+                    _ => {
                        mouse_handler(
                            modifiers,
                            event.pointer_id(),
@@ -143,27 +139,27 @@ impl PointerHandler {
                            event::mouse_button(&event).expect("no mouse button pressed"),
                        );

-                        // Error is swallowed here since the error would occur every time the mouse
-                        // is clicked when the cursor is grabbed, and there
-                        // is probably not a situation where this could
-                        // fail, that we care if it fails.
-                        let _e = canvas.set_pointer_capture(event.pointer_id());
+                        if pointer_type == "mouse" {
+                            // Error is swallowed here since the error would occur every time the
+                            // mouse is clicked when the cursor is
+                            // grabbed, and there is probably not a
+                            // situation where this could fail, that we
+                            // care if it fails.
+                            let _e = canvas.set_pointer_capture(event.pointer_id());
+                        }
                    },
-                    _ => modifier_handler(modifiers),
                }
            }));
    }

-    pub fn on_cursor_move<MOD, M, T, B>(
+    pub fn on_cursor_move<M, T, B>(
        &mut self,
        canvas_common: &Common,
-        mut modifier_handler: MOD,
        mut mouse_handler: M,
        mut touch_handler: T,
        mut button_handler: B,
        prevent_default: Rc<Cell<bool>>,
    ) where
-        MOD: 'static + FnMut(ModifiersState),
        M: 'static + FnMut(ModifiersState, i32, &mut dyn Iterator<Item = PhysicalPosition<f64>>),
        T: 'static
            + FnMut(ModifiersState, i32, &mut dyn Iterator<Item = (PhysicalPosition<f64>, Force)>),
@@ -175,23 +171,10 @@ impl PointerHandler {
            Some(canvas_common.add_event("pointermove", move |event: PointerEvent| {
                let modifiers = event::mouse_modifiers(&event);

-                let pointer_type = event.pointer_type();
-
-                if let "touch" | "mouse" = pointer_type.as_str() {
-                } else {
-                    modifier_handler(modifiers);
-                    return;
-                }
-
                let id = event.pointer_id();

                // chorded button event
                if let Some(button) = event::mouse_button(&event) {
-                    debug_assert_eq!(
-                        pointer_type, "mouse",
-                        "expect pointer type of a chorded button event to be a mouse"
-                    );
-
                    if prevent_default.get() {
                        // prevent text selection
                        event.prevent_default();
@@ -212,13 +195,7 @@ impl PointerHandler {

                // pointer move event
                let scale = super::scale_factor(&window);
-                match pointer_type.as_str() {
-                    "mouse" => mouse_handler(
-                        modifiers,
-                        id,
-                        &mut event::pointer_move_event(event)
-                            .map(|event| event::mouse_position(&event).to_physical(scale)),
-                    ),
+                match event.pointer_type().as_str() {
                    "touch" => touch_handler(
                        modifiers,
                        id,
@@ -229,7 +206,12 @@ impl PointerHandler {
                            )
                        }),
                    ),
-                    _ => unreachable!("didn't return early before"),
+                    _ => mouse_handler(
+                        modifiers,
+                        id,
+                        &mut event::pointer_move_event(event)
+                            .map(|event| event::mouse_position(&event).to_physical(scale)),
+                    ),
                };
            }));
    }
--- a/src/platform_impl/web/web_sys/resize_scaling.rs
+++ b/src/platform_impl/web/web_sys/resize_scaling.rs
@@ -139,10 +139,9 @@ impl ResizeScaleInternal {

        // Safari doesn't support `devicePixelContentBoxSize`
        if has_device_pixel_support() {
-            observer.observe_with_options(
-                canvas,
-                ResizeObserverOptions::new().box_(ResizeObserverBoxOptions::DevicePixelContentBox),
-            );
+            let options = ResizeObserverOptions::new();
+            options.set_box(ResizeObserverBoxOptions::DevicePixelContentBox);
+            observer.observe_with_options(canvas, &options);
        } else {
            observer.observe(canvas);
        }
--- a/src/platform_impl/web/web_sys/schedule.rs
+++ b/src/platform_impl/web/web_sys/schedule.rs
@@ -87,7 +87,7 @@ impl Schedule {
            let duration = duration
                .as_secs()
                .checked_mul(1000)
-                .and_then(|secs| secs.checked_add(duration.subsec_micros().div_ceil(1000).into()))
+                .and_then(|secs| secs.checked_add(duration_millis_ceil(duration).into()))
                .unwrap_or(u64::MAX);

            options.delay(duration as f64);
@@ -140,9 +140,7 @@ impl Schedule {
                .ok()
                .and_then(|secs: i32| secs.checked_mul(1000))
                .and_then(|secs: i32| {
-                    let millis: i32 = duration
-                        .subsec_micros()
-                        .div_ceil(1000)
+                    let millis: i32 = duration_millis_ceil(duration)
                        .try_into()
                        .expect("millis are somehow bigger then 1K");
                    secs.checked_add(millis)
@@ -191,7 +189,7 @@ impl Schedule {
            .try_into()
            .ok()
            .and_then(|secs: u32| secs.checked_mul(1000))
-            .and_then(|secs| secs.checked_add(duration.subsec_micros().div_ceil(1000)))
+            .and_then(|secs| secs.checked_add(duration_millis_ceil(duration)))
            .unwrap_or(u32::MAX);

        WORKER
@@ -226,6 +224,20 @@ impl Drop for Schedule {
    }
 }

+// TODO: Replace with `u32::div_ceil()` when we hit Rust v1.73.
+fn duration_millis_ceil(duration: Duration) -> u32 {
+    let micros = duration.subsec_micros();
+
+    // From <https://doc.rust-lang.org/1.73.0/src/core/num/uint_macros.rs.html#2086-2094>.
+    let d = micros / 1000;
+    let r = micros % 1000;
+    if r > 0 && 1000 > 0 {
+        d + 1
+    } else {
+        d
+    }
+}
+
 fn has_scheduler_support(window: &web_sys::Window) -> bool {
    thread_local! {
        static SCHEDULER_SUPPORT: OnceCell<bool> = const { OnceCell::new() };
@@ -274,8 +286,8 @@ struct ScriptUrl(String);
 impl ScriptUrl {
    fn new(script: &str) -> Self {
        let sequence = Array::of1(&script.into());
-        let mut property = BlobPropertyBag::new();
-        property.type_("text/javascript");
+        let property = BlobPropertyBag::new();
+        property.set_type("text/javascript");
        let blob = Blob::new_with_str_sequence_and_options(&sequence, &property)
            .expect("`new Blob()` should never throw");

--- a/src/platform_impl/web/window.rs
+++ b/src/platform_impl/web/window.rs
@@ -431,7 +431,7 @@ impl Drop for Inner {
 pub struct WindowId(pub(crate) u32);

 impl WindowId {
-    pub const unsafe fn dummy() -> Self {
+    pub const fn dummy() -> Self {
        Self(0)
    }
 }
--- a/src/platform_impl/windows/dark_mode.rs
+++ b/src/platform_impl/windows/dark_mode.rs
@@ -123,7 +123,7 @@ fn set_dark_mode_for_window(hwnd: HWND, is_dark_mode: bool) -> bool {
    }
 }

-fn should_use_dark_mode() -> bool {
+pub fn should_use_dark_mode() -> bool {
    should_apps_use_dark_mode() && !is_high_contrast()
 }

--- a/src/platform_impl/windows/drop_handler.rs
+++ b/src/platform_impl/windows/drop_handler.rs
@@ -25,7 +25,7 @@ pub struct FileDropHandlerData {
    pub interface: IDropTarget,
    refcount: AtomicUsize,
    window: HWND,
-    send_event: Box<dyn Fn(Event)>,
+    send_event: Box<dyn Fn(Event<()>)>,
    cursor_effect: u32,
    hovered_is_valid: bool, /* If the currently hovered item is not valid there must not be any
                             * `HoveredFileCancelled` emitted */
@@ -37,7 +37,7 @@ pub struct FileDropHandler {

 #[allow(non_snake_case)]
 impl FileDropHandler {
-    pub(crate) fn new(window: HWND, send_event: Box<dyn Fn(Event)>) -> FileDropHandler {
+    pub fn new(window: HWND, send_event: Box<dyn Fn(Event<()>)>) -> FileDropHandler {
        let data = Box::new(FileDropHandlerData {
            interface: IDropTarget { lpVtbl: &DROP_TARGET_VTBL as *const IDropTargetVtbl },
            refcount: AtomicUsize::new(1),
@@ -211,7 +211,7 @@ impl FileDropHandler {
 }

 impl FileDropHandlerData {
-    fn send_event(&self, event: Event) {
+    fn send_event(&self, event: Event<()>) {
        (self.send_event)(event);
    }
 }
--- a/src/platform_impl/windows/event_loop.rs
+++ b/src/platform_impl/windows/event_loop.rs
@@ -6,8 +6,10 @@ use std::cell::Cell;
 use std::collections::VecDeque;
 use std::ffi::c_void;
 use std::marker::PhantomData;
+use std::os::windows::io::{AsRawHandle as _, FromRawHandle as _, OwnedHandle, RawHandle};
 use std::rc::Rc;
 use std::sync::atomic::{AtomicU32, Ordering};
+use std::sync::mpsc::{self, Receiver, Sender};
 use std::sync::{Arc, Mutex, MutexGuard};
 use std::time::{Duration, Instant};
 use std::{mem, panic, ptr};
@@ -15,13 +17,18 @@ use std::{mem, panic, ptr};
 use crate::utils::Lazy;

 use windows_sys::Win32::Devices::HumanInterfaceDevice::MOUSE_MOVE_RELATIVE;
-use windows_sys::Win32::Foundation::{HWND, LPARAM, LRESULT, POINT, RECT, WPARAM};
+use windows_sys::Win32::Foundation::{
+    GetLastError, FALSE, HANDLE, HWND, LPARAM, LRESULT, POINT, RECT, WAIT_FAILED, WPARAM,
+};
 use windows_sys::Win32::Graphics::Gdi::{
    GetMonitorInfoW, MonitorFromRect, MonitorFromWindow, RedrawWindow, ScreenToClient,
    ValidateRect, MONITORINFO, MONITOR_DEFAULTTONULL, RDW_INTERNALPAINT, SC_SCREENSAVE,
 };
 use windows_sys::Win32::System::Ole::RevokeDragDrop;
-use windows_sys::Win32::System::Threading::{GetCurrentThreadId, INFINITE};
+use windows_sys::Win32::System::Threading::{
+    CreateWaitableTimerExW, GetCurrentThreadId, SetWaitableTimer,
+    CREATE_WAITABLE_TIMER_HIGH_RESOLUTION, INFINITE, TIMER_ALL_ACCESS,
+};
 use windows_sys::Win32::UI::Controls::{HOVER_DEFAULT, WM_MOUSELEAVE};
 use windows_sys::Win32::UI::Input::Ime::{GCS_COMPSTR, GCS_RESULTSTR, ISC_SHOWUICOMPOSITIONWINDOW};
 use windows_sys::Win32::UI::Input::KeyboardAndMouse::{
@@ -37,15 +44,15 @@ use windows_sys::Win32::UI::Input::Touch::{
 use windows_sys::Win32::UI::Input::{RAWINPUT, RIM_TYPEKEYBOARD, RIM_TYPEMOUSE};
 use windows_sys::Win32::UI::WindowsAndMessaging::{
    CreateWindowExW, DefWindowProcW, DestroyWindow, DispatchMessageW, GetClientRect, GetCursorPos,
-    GetMenu, GetMessageW, KillTimer, LoadCursorW, PeekMessageW, PostMessageW, RegisterClassExW,
-    RegisterWindowMessageA, SetCursor, SetTimer, SetWindowPos, TranslateMessage, CREATESTRUCTW,
-    GIDC_ARRIVAL, GIDC_REMOVAL, GWL_STYLE, GWL_USERDATA, HTCAPTION, HTCLIENT, MINMAXINFO,
-    MNC_CLOSE, MSG, NCCALCSIZE_PARAMS, PM_REMOVE, PT_PEN, PT_TOUCH, RI_MOUSE_HWHEEL,
-    RI_MOUSE_WHEEL, SC_MINIMIZE, SC_RESTORE, SIZE_MAXIMIZED, SWP_NOACTIVATE, SWP_NOMOVE,
-    SWP_NOSIZE, SWP_NOZORDER, WHEEL_DELTA, WINDOWPOS, WMSZ_BOTTOM, WMSZ_BOTTOMLEFT,
-    WMSZ_BOTTOMRIGHT, WMSZ_LEFT, WMSZ_RIGHT, WMSZ_TOP, WMSZ_TOPLEFT, WMSZ_TOPRIGHT,
-    WM_CAPTURECHANGED, WM_CLOSE, WM_CREATE, WM_DESTROY, WM_DPICHANGED, WM_ENTERSIZEMOVE,
-    WM_EXITSIZEMOVE, WM_GETMINMAXINFO, WM_IME_COMPOSITION, WM_IME_ENDCOMPOSITION,
+    GetMenu, LoadCursorW, MsgWaitForMultipleObjectsEx, PeekMessageW, PostMessageW,
+    RegisterClassExW, RegisterWindowMessageA, SetCursor, SetWindowPos, TranslateMessage,
+    CREATESTRUCTW, GIDC_ARRIVAL, GIDC_REMOVAL, GWL_STYLE, GWL_USERDATA, HTCAPTION, HTCLIENT,
+    MINMAXINFO, MNC_CLOSE, MSG, MWMO_INPUTAVAILABLE, NCCALCSIZE_PARAMS, PM_REMOVE, PT_PEN,
+    PT_TOUCH, QS_ALLEVENTS, RI_MOUSE_HWHEEL, RI_MOUSE_WHEEL, SC_MINIMIZE, SC_RESTORE,
+    SIZE_MAXIMIZED, SWP_NOACTIVATE, SWP_NOMOVE, SWP_NOSIZE, SWP_NOZORDER, WHEEL_DELTA, WINDOWPOS,
+    WMSZ_BOTTOM, WMSZ_BOTTOMLEFT, WMSZ_BOTTOMRIGHT, WMSZ_LEFT, WMSZ_RIGHT, WMSZ_TOP, WMSZ_TOPLEFT,
+    WMSZ_TOPRIGHT, WM_CAPTURECHANGED, WM_CLOSE, WM_CREATE, WM_DESTROY, WM_DPICHANGED,
+    WM_ENTERSIZEMOVE, WM_EXITSIZEMOVE, WM_GETMINMAXINFO, WM_IME_COMPOSITION, WM_IME_ENDCOMPOSITION,
    WM_IME_SETCONTEXT, WM_IME_STARTCOMPOSITION, WM_INPUT, WM_INPUT_DEVICE_CHANGE, WM_KEYDOWN,
    WM_KEYUP, WM_KILLFOCUS, WM_LBUTTONDOWN, WM_LBUTTONUP, WM_MBUTTONDOWN, WM_MBUTTONUP,
    WM_MENUCHAR, WM_MOUSEHWHEEL, WM_MOUSEMOVE, WM_MOUSEWHEEL, WM_NCACTIVATE, WM_NCCALCSIZE,
@@ -56,13 +63,12 @@ use windows_sys::Win32::UI::WindowsAndMessaging::{
    WS_EX_NOACTIVATE, WS_EX_TOOLWINDOW, WS_EX_TRANSPARENT, WS_OVERLAPPED, WS_POPUP, WS_VISIBLE,
 };

-use crate::application::ApplicationHandler;
 use crate::dpi::{PhysicalPosition, PhysicalSize};
 use crate::error::EventLoopError;
 use crate::event::{
    DeviceEvent, Event, Force, Ime, InnerSizeWriter, RawKeyEvent, Touch, TouchPhase, WindowEvent,
 };
-use crate::event_loop::{ActiveEventLoop as RootAEL, ControlFlow, DeviceEvents};
+use crate::event_loop::{ActiveEventLoop as RootAEL, ControlFlow, DeviceEvents, EventLoopClosed};
 use crate::keyboard::ModifiersState;
 use crate::platform::pump_events::PumpStatus;
 use crate::platform_impl::platform::dark_mode::try_theme;
@@ -81,16 +87,37 @@ use crate::platform_impl::platform::{
    raw_input, util, wrap_device_id, Fullscreen, WindowId, DEVICE_ID,
 };
 use crate::window::{
-    CustomCursor as RootCustomCursor, CustomCursorSource, WindowId as RootWindowId,
+    CustomCursor as RootCustomCursor, CustomCursorSource, Theme, WindowId as RootWindowId,
 };
-use runner::EventLoopRunner;
+use runner::{EventLoopRunner, EventLoopRunnerShared};

 use super::window::set_skip_taskbar;
 use super::SelectedCursor;

+/// some backends like macos uses an uninhabited `Never` type,
+/// on windows, `UserEvent`s are also dispatched through the
+/// WNDPROC callback, and due to the re-entrant nature of the
+/// callback, recursively delivered events must be queued in a
+/// buffer, the current implementation put this queue in
+/// `EventLoopRunner`, which is shared between the event pumping
+/// loop and the callback. because it's hard to decide from the
+/// outside whether a event needs to be buffered, I decided not
+/// use `Event<Never>` for the shared runner state, but use unit
+/// as a placeholder so user events can be buffered as usual,
+/// the real `UserEvent` is pulled from the mpsc channel directly
+/// when the placeholder event is delivered to the event handler
+pub(crate) struct UserEventPlaceholder;
+
+// here below, the generic `EventLoopRunnerShared<T>` is replaced with
+// `EventLoopRunnerShared<UserEventPlaceholder>` so we can get rid
+// of the generic parameter T in types which don't depend on T.
+// this is the approach which requires minimum changes to current
+// backend implementation. it should be considered transitional
+// and should be refactored and cleaned up eventually, I hope.
+
 pub(crate) struct WindowData {
    pub window_state: Arc<Mutex<WindowState>>,
-    pub event_loop_runner: Rc<EventLoopRunner>,
+    pub event_loop_runner: EventLoopRunnerShared<UserEventPlaceholder>,
    pub key_event_builder: KeyEventBuilder,
    pub _file_drop_handler: Option<FileDropHandler>,
    pub userdata_removed: Cell<bool>,
@@ -98,7 +125,7 @@ pub(crate) struct WindowData {
 }

 impl WindowData {
-    fn send_event(&self, event: Event) {
+    fn send_event(&self, event: Event<UserEventPlaceholder>) {
        self.event_loop_runner.send_event(event);
    }

@@ -108,11 +135,11 @@ impl WindowData {
 }

 struct ThreadMsgTargetData {
-    event_loop_runner: Rc<EventLoopRunner>,
+    event_loop_runner: EventLoopRunnerShared<UserEventPlaceholder>,
 }

 impl ThreadMsgTargetData {
-    fn send_event(&self, event: Event) {
+    fn send_event(&self, event: Event<UserEventPlaceholder>) {
        self.event_loop_runner.send_event(event);
    }
 }
@@ -124,9 +151,15 @@ pub(crate) enum ProcResult {
    Value(isize),
 }

-pub struct EventLoop {
+pub struct EventLoop<T: 'static> {
+    user_event_sender: Sender<T>,
+    user_event_receiver: Receiver<T>,
    window_target: RootAEL,
    msg_hook: Option<Box<dyn FnMut(*const c_void) -> bool + 'static>>,
+    // It is a timer used on timed waits.
+    // It is created lazily in case if we have `ControlFlow::WaitUntil`.
+    // Keep it as a field to avoid recreating it on every `ControlFlow::WaitUntil`.
+    high_resolution_timer: Option<OwnedHandle>,
 }

 pub(crate) struct PlatformSpecificEventLoopAttributes {
@@ -144,10 +177,10 @@ impl Default for PlatformSpecificEventLoopAttributes {
 pub struct ActiveEventLoop {
    thread_id: u32,
    thread_msg_target: HWND,
-    pub(crate) runner_shared: Rc<EventLoopRunner>,
+    pub(crate) runner_shared: EventLoopRunnerShared<UserEventPlaceholder>,
 }

-impl EventLoop {
+impl<T: 'static> EventLoop<T> {
    pub(crate) fn new(
        attributes: &mut PlatformSpecificEventLoopAttributes,
    ) -> Result<Self, EventLoopError> {
@@ -170,6 +203,7 @@ impl EventLoop {

        let runner_shared = Rc::new(EventLoopRunner::new(thread_msg_target));

+        let (user_event_sender, user_event_receiver) = mpsc::channel();
        insert_event_target_window_data(thread_msg_target, runner_shared.clone());
        raw_input::register_all_mice_and_keyboards_for_raw_input(
            thread_msg_target,
@@ -177,11 +211,14 @@ impl EventLoop {
        );

        Ok(EventLoop {
+            user_event_sender,
+            user_event_receiver,
            window_target: RootAEL {
                p: ActiveEventLoop { thread_id, thread_msg_target, runner_shared },
                _marker: PhantomData,
            },
            msg_hook: attributes.msg_hook.take(),
+            high_resolution_timer: None,
        })
    }

@@ -189,43 +226,50 @@ impl EventLoop {
        &self.window_target
    }

-    pub fn run_app<A: ApplicationHandler>(mut self, app: &mut A) -> Result<(), EventLoopError> {
-        self.run_app_on_demand(app)
+    pub fn run<F>(mut self, event_handler: F) -> Result<(), EventLoopError>
+    where
+        F: FnMut(Event<T>, &RootAEL),
+    {
+        self.run_on_demand(event_handler)
    }

-    pub fn run_app_on_demand<A: ApplicationHandler>(
-        &mut self,
-        app: &mut A,
-    ) -> Result<(), EventLoopError> {
+    pub fn run_on_demand<F>(&mut self, mut event_handler: F) -> Result<(), EventLoopError>
+    where
+        F: FnMut(Event<T>, &RootAEL),
+    {
        {
            let runner = &self.window_target.p.runner_shared;

            let event_loop_windows_ref = &self.window_target;
+            let user_event_receiver = &self.user_event_receiver;
            // # Safety
            // We make sure to call runner.clear_event_handler() before
            // returning
            unsafe {
-                runner.set_event_handler(move |event| match event {
-                    Event::NewEvents(cause) => app.new_events(event_loop_windows_ref, cause),
-                    Event::WindowEvent { window_id, event } => {
-                        app.window_event(event_loop_windows_ref, window_id, event)
-                    },
-                    Event::DeviceEvent { device_id, event } => {
-                        app.device_event(event_loop_windows_ref, device_id, event)
-                    },
-                    Event::UserWakeUp => app.proxy_wake_up(event_loop_windows_ref),
-                    Event::Suspended => app.suspended(event_loop_windows_ref),
-                    Event::Resumed => app.resumed(event_loop_windows_ref),
-                    Event::AboutToWait => app.about_to_wait(event_loop_windows_ref),
-                    Event::LoopExiting => app.exiting(event_loop_windows_ref),
-                    Event::MemoryWarning => app.memory_warning(event_loop_windows_ref),
+                runner.set_event_handler(move |event| {
+                    // the shared `EventLoopRunner` is not parameterized
+                    // `EventLoopProxy::send_event()` calls `PostMessage`
+                    // to wakeup and dispatch a placeholder `UserEvent`,
+                    // when we received the placeholder event here, the
+                    // real UserEvent(T) should already be put in the
+                    // mpsc channel and ready to be pulled
+                    let event = match event.map_nonuser_event() {
+                        Ok(non_user_event) => non_user_event,
+                        Err(_user_event_placeholder) => Event::UserEvent(
+                            user_event_receiver
+                                .try_recv()
+                                .expect("user event signaled but not received"),
+                        ),
+                    };
+                    event_handler(event, event_loop_windows_ref)
                });
            }
        }

        let exit_code = loop {
-            self.wait_and_dispatch_message(None);
-
+            self.wait_for_messages(None);
+            // wait_for_messages calls user application before and after waiting
+            // so it may have decided to exit.
            if let Some(code) = self.exit_code() {
                break code;
            }
@@ -252,15 +296,14 @@ impl EventLoop {
        }
    }

-    pub fn pump_app_events<A: ApplicationHandler>(
-        &mut self,
-        timeout: Option<Duration>,
-        app: &mut A,
-    ) -> PumpStatus {
+    pub fn pump_events<F>(&mut self, timeout: Option<Duration>, mut event_handler: F) -> PumpStatus
+    where
+        F: FnMut(Event<T>, &RootAEL),
+    {
        {
            let runner = &self.window_target.p.runner_shared;
            let event_loop_windows_ref = &self.window_target;
-            // let user_event_receiver = &self.user_event_receiver;
+            let user_event_receiver = &self.user_event_receiver;

            // # Safety
            // We make sure to call runner.clear_event_handler() before
@@ -270,28 +313,26 @@ impl EventLoop {
            // to leave the runner in an unsound state with an associated
            // event handler.
            unsafe {
-                runner.set_event_handler(move |event| match event {
-                    Event::NewEvents(cause) => app.new_events(event_loop_windows_ref, cause),
-                    Event::WindowEvent { window_id, event } => {
-                        app.window_event(event_loop_windows_ref, window_id, event)
-                    },
-                    Event::DeviceEvent { device_id, event } => {
-                        app.device_event(event_loop_windows_ref, device_id, event)
-                    },
-                    Event::UserWakeUp => app.proxy_wake_up(event_loop_windows_ref),
-                    Event::Suspended => app.suspended(event_loop_windows_ref),
-                    Event::Resumed => app.resumed(event_loop_windows_ref),
-                    Event::AboutToWait => app.about_to_wait(event_loop_windows_ref),
-                    Event::LoopExiting => app.exiting(event_loop_windows_ref),
-                    Event::MemoryWarning => app.memory_warning(event_loop_windows_ref),
+                runner.set_event_handler(move |event| {
+                    let event = match event.map_nonuser_event() {
+                        Ok(non_user_event) => non_user_event,
+                        Err(_user_event_placeholder) => Event::UserEvent(
+                            user_event_receiver
+                                .recv()
+                                .expect("user event signaled but not received"),
+                        ),
+                    };
+                    event_handler(event, event_loop_windows_ref)
                });
-
                runner.wakeup();
            }
        }

-        self.wait_and_dispatch_message(timeout);
-
+        if self.exit_code().is_none() {
+            self.wait_for_messages(timeout);
+        }
+        // wait_for_messages calls user application before and after waiting
+        // so it may have decided to exit.
        if self.exit_code().is_none() {
            self.dispatch_peeked_messages();
        }
@@ -321,101 +362,27 @@ impl EventLoop {
        status
    }

-    /// Wait for one message and dispatch it, optionally with a timeout
-    fn wait_and_dispatch_message(&mut self, timeout: Option<Duration>) {
-        fn get_msg_with_timeout(msg: &mut MSG, timeout: Option<Duration>) -> PumpStatus {
-            unsafe {
-                // A timeout of None means wait indefinitely (so we don't need to call SetTimer)
-                let timer_id = timeout.map(|timeout| SetTimer(0, 0, dur2timeout(timeout), None));
-                let get_status = GetMessageW(msg, 0, 0, 0);
-                if let Some(timer_id) = timer_id {
-                    KillTimer(0, timer_id);
-                }
-                // A return value of 0 implies `WM_QUIT`
-                if get_status == 0 {
-                    PumpStatus::Exit(0)
-                } else {
-                    PumpStatus::Continue
-                }
-            }
-        }
-
-        /// Fetch the next MSG either via PeekMessage or GetMessage depending on whether the
-        /// requested timeout is `ZERO` (and so we don't want to block)
-        ///
-        /// Returns `None` if no MSG was read, else a `Continue` or `Exit` status
-        fn wait_for_msg(msg: &mut MSG, timeout: Option<Duration>) -> Option<PumpStatus> {
-            if timeout == Some(Duration::ZERO) {
-                unsafe {
-                    if PeekMessageW(msg, 0, 0, 0, PM_REMOVE) != 0 {
-                        Some(PumpStatus::Continue)
-                    } else {
-                        None
-                    }
-                }
-            } else {
-                Some(get_msg_with_timeout(msg, timeout))
-            }
-        }
-
+    /// Waits until new event messages arrive to be peeked.
+    /// Doesn't peek messages itself.
+    ///
+    /// Parameter timeout is optional. This method would wait for the smaller timeout
+    /// between the argument and a timeout from control flow.
+    fn wait_for_messages(&mut self, timeout: Option<Duration>) {
        let runner = &self.window_target.p.runner_shared;

        // We aim to be consistent with the MacOS backend which has a RunLoop
        // observer that will dispatch AboutToWait when about to wait for
        // events, and NewEvents after the RunLoop wakes up.
        //
-        // We emulate similar behaviour by treating `GetMessage` as our wait
+        // We emulate similar behaviour by treating `MsgWaitForMultipleObjectsEx` as our wait
        // point and wake up point (when it returns) and we drain all other
        // pending messages via `PeekMessage` until we come back to "wait" via
-        // `GetMessage`
+        // `MsgWaitForMultipleObjectsEx`.
        //
        runner.prepare_wait();
-
-        let control_flow_timeout = match runner.control_flow() {
-            ControlFlow::Wait => None,
-            ControlFlow::Poll => Some(Duration::ZERO),
-            ControlFlow::WaitUntil(wait_deadline) => {
-                let start = Instant::now();
-                Some(wait_deadline.saturating_duration_since(start))
-            },
-        };
-        let timeout = min_timeout(control_flow_timeout, timeout);
-
-        // # Safety
-        // The Windows API has no documented requirement for bitwise
-        // initializing a `MSG` struct (it can be uninitialized memory for the C
-        // API) and there's no API to construct or initialize a `MSG`. This
-        // is the simplest way avoid uninitialized memory in Rust
-        let mut msg = unsafe { mem::zeroed() };
-        let msg_status = wait_for_msg(&mut msg, timeout);
-
+        wait_for_messages_impl(&mut self.high_resolution_timer, runner.control_flow(), timeout);
        // Before we potentially exit, make sure to consistently emit an event for the wake up
        runner.wakeup();
-
-        match msg_status {
-            None => {}, // No MSG to dispatch
-            Some(PumpStatus::Exit(code)) => {
-                runner.set_exit_code(code);
-            },
-            Some(PumpStatus::Continue) => {
-                unsafe {
-                    let handled = if let Some(callback) = self.msg_hook.as_deref_mut() {
-                        callback(&mut msg as *mut _ as *mut _)
-                    } else {
-                        false
-                    };
-                    if !handled {
-                        TranslateMessage(&msg);
-                        DispatchMessageW(&msg);
-                    }
-                }
-
-                if let Err(payload) = runner.take_panic_error() {
-                    runner.reset_runner();
-                    panic::resume_unwind(payload);
-                }
-            },
-        }
    }

    /// Dispatch all queued messages via `PeekMessageW`
@@ -434,7 +401,7 @@ impl EventLoop {
        // initializing a `MSG` struct (it can be uninitialized memory for the C
        // API) and there's no API to construct or initialize a `MSG`. This
        // is the simplest way avoid uninitialized memory in Rust
-        let mut msg = unsafe { mem::zeroed() };
+        let mut msg: MSG = unsafe { mem::zeroed() };

        loop {
            unsafe {
@@ -468,8 +435,11 @@ impl EventLoop {
        }
    }

-    pub fn create_proxy(&self) -> EventLoopProxy {
-        EventLoopProxy { target_window: self.window_target.p.thread_msg_target }
+    pub fn create_proxy(&self) -> EventLoopProxy<T> {
+        EventLoopProxy {
+            target_window: self.window_target.p.thread_msg_target,
+            event_send: self.user_event_sender.clone(),
+        }
    }

    fn exit_code(&self) -> Option<i32> {
@@ -521,6 +491,10 @@ impl ActiveEventLoop {
        raw_input::register_all_mice_and_keyboards_for_raw_input(self.thread_msg_target, allowed);
    }

+    pub fn system_theme(&self) -> Option<Theme> {
+        Some(if super::dark_mode::should_use_dark_mode() { Theme::Dark } else { Theme::Light })
+    }
+
    pub(crate) fn set_control_flow(&self, control_flow: ControlFlow) {
        self.runner_shared.set_control_flow(control_flow)
    }
@@ -590,7 +564,7 @@ impl OwnedDisplayHandle {
 fn main_thread_id() -> u32 {
    static mut MAIN_THREAD_ID: u32 = 0;

-    /// Function pointer used in CRT initialization section to set the above static field's value.
+    // Function pointer used in CRT initialization section to set the above static field's value.

    // Mark as used so this is not removable.
    #[used]
@@ -641,7 +615,7 @@ fn dur2timeout(dur: Duration) -> u32 {
        .unwrap_or(INFINITE)
 }

-impl Drop for EventLoop {
+impl<T> Drop for EventLoop<T> {
    fn drop(&mut self) {
        unsafe {
            DestroyWindow(self.window_target.p.thread_msg_target);
@@ -649,6 +623,143 @@ impl Drop for EventLoop {
    }
 }

+/// Set upper limit for waiting time to avoid overflows.
+/// I chose 50 days as a limit because it is used in dur2timeout.
+const FIFTY_DAYS: Duration = Duration::from_secs(50_u64 * 24 * 60 * 60);
+/// Waitable timers use 100 ns intervals to indicate due time.
+/// <https://learn.microsoft.com/en-us/windows/win32/api/synchapi/nf-synchapi-setwaitabletimer#parameters>
+/// And there is no point waiting using other ways for such small timings
+/// because they are even less precise (can overshoot by few ms).
+const MIN_WAIT: Duration = Duration::from_nanos(100);
+
+fn create_high_resolution_timer() -> Option<OwnedHandle> {
+    unsafe {
+        let handle: HANDLE = CreateWaitableTimerExW(
+            ptr::null(),
+            ptr::null(),
+            CREATE_WAITABLE_TIMER_HIGH_RESOLUTION,
+            TIMER_ALL_ACCESS,
+        );
+        // CREATE_WAITABLE_TIMER_HIGH_RESOLUTION is supported only after
+        // Win10 1803 but it is already default option for rustc
+        // (std uses it to implement `std::thread::sleep`).
+        if handle == 0 {
+            None
+        } else {
+            Some(OwnedHandle::from_raw_handle(handle as *mut c_void))
+        }
+    }
+}
+
+/// This function should not return error if parameters are valid
+/// but there is no guarantee about that at MSDN docs
+/// so we return result of GetLastError if fail.
+///
+/// ## Safety
+///
+/// timer must be a valid timer handle created by [create_high_resolution_timer].
+/// timeout divided by 100 nanoseconds must be more than 0 and less than i64::MAX.
+unsafe fn set_high_resolution_timer(timer: RawHandle, timeout: Duration) -> Result<(), u32> {
+    const INTERVAL_NS: u32 = MIN_WAIT.subsec_nanos();
+    const INTERVALS_IN_SEC: u64 = (Duration::from_secs(1).as_nanos() / INTERVAL_NS as u128) as u64;
+    let intervals_to_wait: u64 =
+        timeout.as_secs() * INTERVALS_IN_SEC + u64::from(timeout.subsec_nanos() / INTERVAL_NS);
+    debug_assert!(intervals_to_wait < i64::MAX as u64, "Must be called with smaller duration",);
+    // Use negative time to indicate relative time.
+    let due_time: i64 = -(intervals_to_wait as i64);
+    unsafe {
+        let set_result = SetWaitableTimer(timer as HANDLE, &due_time, 0, None, ptr::null(), FALSE);
+        if set_result != FALSE {
+            Ok(())
+        } else {
+            Err(GetLastError())
+        }
+    }
+}
+
+/// Implementation detail of [EventLoop::wait_for_messages].
+///
+/// Does actual system-level waiting and doesn't process any messages itself,
+/// including winits internal notifications about waiting and new messages arrival.
+fn wait_for_messages_impl(
+    high_resolution_timer: &mut Option<OwnedHandle>,
+    control_flow: ControlFlow,
+    timeout: Option<Duration>,
+) {
+    let timeout = {
+        let control_flow_timeout = match control_flow {
+            ControlFlow::Wait => None,
+            ControlFlow::Poll => Some(Duration::ZERO),
+            ControlFlow::WaitUntil(wait_deadline) => {
+                let start = Instant::now();
+                Some(wait_deadline.saturating_duration_since(start))
+            },
+        };
+        let timeout = min_timeout(timeout, control_flow_timeout);
+        if timeout == Some(Duration::ZERO) {
+            // Do not wait if we don't have time.
+            return;
+        }
+        // Now we decided to wait so need to do some clamping
+        // to avoid problems with overflow and calling WinAPI with invalid parameters.
+        timeout
+            .map(|t| t.min(FIFTY_DAYS))
+            // If timeout is less than minimally supported by Windows,
+            // increase it to that minimum. Who want less than microsecond delays anyway?
+            .map(|t| t.max(MIN_WAIT))
+    };
+
+    if timeout.is_some() && high_resolution_timer.is_none() {
+        *high_resolution_timer = create_high_resolution_timer();
+    }
+
+    let high_resolution_timer: Option<RawHandle> =
+        high_resolution_timer.as_ref().map(OwnedHandle::as_raw_handle);
+
+    let use_timer: bool;
+    if let (Some(handle), Some(timeout)) = (high_resolution_timer, timeout) {
+        let res = unsafe {
+            // Safety: handle can be Some only if we succeeded in creating high resolution
+            // timer. We properly clamped timeout so it can be used as argument
+            // to timer.
+            set_high_resolution_timer(handle, timeout)
+        };
+        if let Err(error_code) = res {
+            // We successfully got timer but failed to set it?
+            // Should be some bug in our code.
+            tracing::trace!("Failed to set high resolution timer: last error {}", error_code);
+            use_timer = false;
+        } else {
+            use_timer = true;
+        }
+    } else {
+        use_timer = false;
+    }
+
+    unsafe {
+        // Either:
+        //  1. User wants to wait indefinely if timeout is not set.
+        //  2. We failed to get and set high resolution timer and we need something instead of it.
+        let wait_duration_ms = timeout.map(dur2timeout).unwrap_or(INFINITE);
+
+        let (num_handles, raw_handles) =
+            if use_timer { (1, [high_resolution_timer.unwrap()]) } else { (0, [ptr::null_mut()]) };
+
+        let result = MsgWaitForMultipleObjectsEx(
+            num_handles,
+            raw_handles.as_ptr() as *const _,
+            wait_duration_ms,
+            QS_ALLEVENTS,
+            MWMO_INPUTAVAILABLE,
+        );
+        if result == WAIT_FAILED {
+            // Well, nothing smart to do in such case.
+            // Treat it as spurious wake up.
+            tracing::warn!("Failed to MsgWaitForMultipleObjectsEx: error code {}", GetLastError(),);
+        }
+    }
+}
+
 pub(crate) struct EventLoopThreadExecutor {
    thread_id: u32,
    target_window: HWND,
@@ -699,16 +810,27 @@ impl EventLoopThreadExecutor {

 type ThreadExecFn = Box<Box<dyn FnMut()>>;

-#[derive(Clone)]
-pub struct EventLoopProxy {
+pub struct EventLoopProxy<T: 'static> {
    target_window: HWND,
+    event_send: Sender<T>,
+}
+unsafe impl<T: Send + 'static> Send for EventLoopProxy<T> {}
+
+impl<T: 'static> Clone for EventLoopProxy<T> {
+    fn clone(&self) -> Self {
+        Self { target_window: self.target_window, event_send: self.event_send.clone() }
+    }
 }

-unsafe impl Send for EventLoopProxy {}
-
-impl EventLoopProxy {
-    pub fn wake_up(&self) {
-        unsafe { PostMessageW(self.target_window, USER_EVENT_MSG_ID.get(), 0, 0) };
+impl<T: 'static> EventLoopProxy<T> {
+    pub fn send_event(&self, event: T) -> Result<(), EventLoopClosed<T>> {
+        self.event_send
+            .send(event)
+            .map(|result| {
+                unsafe { PostMessageW(self.target_window, USER_EVENT_MSG_ID.get(), 0, 0) };
+                result
+            })
+            .map_err(|e| EventLoopClosed(e.0))
    }
 }

@@ -840,7 +962,7 @@ fn create_event_target_window() -> HWND {

 fn insert_event_target_window_data(
    thread_msg_target: HWND,
-    event_loop_runner: Rc<EventLoopRunner>,
+    event_loop_runner: EventLoopRunnerShared<UserEventPlaceholder>,
 ) {
    let userdata = ThreadMsgTargetData { event_loop_runner };
    let input_ptr = Box::into_raw(Box::new(userdata));
@@ -2386,7 +2508,7 @@ unsafe extern "system" fn thread_event_target_callback(
            // user event is still in the mpsc channel and will be pulled
            // once the placeholder event is delivered to the wrapper
            // `event_handler`
-            userdata.send_event(Event::UserWakeUp);
+            userdata.send_event(Event::UserEvent(UserEventPlaceholder));
            0
        },
        _ if msg == EXEC_MSG_ID.get() => {
@@ -2401,7 +2523,7 @@ unsafe extern "system" fn thread_event_target_callback(
    if userdata_removed {
        drop(userdata);
    } else {
-        Box::into_raw(userdata);
+        Box::leak(userdata);
    }
    result
 }
--- a/src/platform_impl/windows/event_loop/runner.rs
+++ b/src/platform_impl/windows/event_loop/runner.rs
@@ -1,6 +1,7 @@
 use std::any::Any;
 use std::cell::{Cell, RefCell};
 use std::collections::VecDeque;
+use std::rc::Rc;
 use std::sync::{Arc, Mutex};
 use std::time::Instant;
 use std::{mem, panic};
@@ -15,9 +16,11 @@ use crate::window::WindowId;

 use super::ControlFlow;

-type EventHandler = Cell<Option<Box<dyn FnMut(Event)>>>;
+pub(crate) type EventLoopRunnerShared<T> = Rc<EventLoopRunner<T>>;

-pub(crate) struct EventLoopRunner {
+type EventHandler<T> = Cell<Option<Box<dyn FnMut(Event<T>)>>>;
+
+pub(crate) struct EventLoopRunner<T: 'static> {
    // The event loop's win32 handles
    pub(super) thread_msg_target: HWND,

@@ -30,8 +33,8 @@ pub(crate) struct EventLoopRunner {
    exit: Cell<Option<i32>>,
    runner_state: Cell<RunnerState>,
    last_events_cleared: Cell<Instant>,
-    event_handler: EventHandler,
-    event_buffer: RefCell<VecDeque<BufferedEvent>>,
+    event_handler: EventHandler<T>,
+    event_buffer: RefCell<VecDeque<BufferedEvent<T>>>,

    panic_error: Cell<Option<PanicError>>,
 }
@@ -52,13 +55,13 @@ pub(crate) enum RunnerState {
    Destroyed,
 }

-enum BufferedEvent {
-    Event(Event),
+enum BufferedEvent<T: 'static> {
+    Event(Event<T>),
    ScaleFactorChanged(WindowId, f64, PhysicalSize<u32>),
 }

-impl EventLoopRunner {
-    pub(crate) fn new(thread_msg_target: HWND) -> EventLoopRunner {
+impl<T> EventLoopRunner<T> {
+    pub(crate) fn new(thread_msg_target: HWND) -> EventLoopRunner<T> {
        EventLoopRunner {
            thread_msg_target,
            interrupt_msg_dispatch: Cell::new(false),
@@ -85,12 +88,13 @@ impl EventLoopRunner {
    /// undefined behaviour.
    pub(crate) unsafe fn set_event_handler<F>(&self, f: F)
    where
-        F: FnMut(Event),
+        F: FnMut(Event<T>),
    {
        // Erase closure lifetime.
        // SAFETY: Caller upholds that the lifetime of the closure is upheld.
-        let f =
-            unsafe { mem::transmute::<Box<dyn FnMut(Event)>, Box<dyn FnMut(Event)>>(Box::new(f)) };
+        let f = unsafe {
+            mem::transmute::<Box<dyn FnMut(Event<T>)>, Box<dyn FnMut(Event<T>)>>(Box::new(f))
+        };
        let old_event_handler = self.event_handler.replace(Some(f));
        assert!(old_event_handler.is_none());
    }
@@ -120,7 +124,7 @@ impl EventLoopRunner {
 }

 /// State retrieval functions.
-impl EventLoopRunner {
+impl<T> EventLoopRunner<T> {
    #[allow(unused)]
    pub fn thread_msg_target(&self) -> HWND {
        self.thread_msg_target
@@ -162,7 +166,7 @@ impl EventLoopRunner {
 }

 /// Misc. functions
-impl EventLoopRunner {
+impl<T> EventLoopRunner<T> {
    pub fn catch_unwind<R>(&self, f: impl FnOnce() -> R) -> Option<R> {
        let panic_error = self.panic_error.take();
        if panic_error.is_none() {
@@ -192,7 +196,7 @@ impl EventLoopRunner {
 }

 /// Event dispatch functions.
-impl EventLoopRunner {
+impl<T> EventLoopRunner<T> {
    pub(crate) fn prepare_wait(&self) {
        self.move_state_to(RunnerState::Idle);
    }
@@ -201,7 +205,7 @@ impl EventLoopRunner {
        self.move_state_to(RunnerState::HandlingMainEvents);
    }

-    pub(crate) fn send_event(&self, event: Event) {
+    pub(crate) fn send_event(&self, event: Event<T>) {
        if let Event::WindowEvent { event: WindowEvent::RedrawRequested, .. } = event {
            self.call_event_handler(event);
            // As a rule, to ensure that `pump_events` can't block an external event loop
@@ -222,7 +226,7 @@ impl EventLoopRunner {
        self.move_state_to(RunnerState::Destroyed);
    }

-    fn call_event_handler(&self, event: Event) {
+    fn call_event_handler(&self, event: Event<T>) {
        self.catch_unwind(|| {
            let mut event_handler = self.event_handler.take().expect(
                "either event handler is re-entrant (likely), or no event handler is registered \
@@ -354,8 +358,8 @@ impl EventLoopRunner {
    }
 }

-impl BufferedEvent {
-    pub fn from_event(event: Event) -> BufferedEvent {
+impl<T> BufferedEvent<T> {
+    pub fn from_event(event: Event<T>) -> BufferedEvent<T> {
        match event {
            Event::WindowEvent {
                event: WindowEvent::ScaleFactorChanged { scale_factor, inner_size_writer },
@@ -369,23 +373,23 @@ impl BufferedEvent {
        }
    }

-    pub fn dispatch_event(self, dispatch: impl FnOnce(Event)) {
+    pub fn dispatch_event(self, dispatch: impl FnOnce(Event<T>)) {
        match self {
            Self::Event(event) => dispatch(event),
            Self::ScaleFactorChanged(window_id, scale_factor, new_inner_size) => {
-                let user_new_innner_size = Arc::new(Mutex::new(new_inner_size));
+                let user_new_inner_size = Arc::new(Mutex::new(new_inner_size));
                dispatch(Event::WindowEvent {
                    window_id,
                    event: WindowEvent::ScaleFactorChanged {
                        scale_factor,
                        inner_size_writer: InnerSizeWriter::new(Arc::downgrade(
-                            &user_new_innner_size,
+                            &user_new_inner_size,
                        )),
                    },
                });
-                let inner_size = *user_new_innner_size.lock().unwrap();
+                let inner_size = *user_new_inner_size.lock().unwrap();

-                drop(user_new_innner_size);
+                drop(user_new_inner_size);

                if inner_size != new_inner_size {
                    let window_flags = unsafe {
--- a/src/platform_impl/windows/keyboard.rs
+++ b/src/platform_impl/windows/keyboard.rs
@@ -98,7 +98,7 @@ impl KeyEventBuilder {
                    MatchResult::MessagesToDispatch(self.pending.complete_multi(key_events))
                },
                WM_KILLFOCUS => {
-                    // sythesize keyup events
+                    // synthesize keyup events
                    let kbd_state = get_kbd_state();
                    let key_events = Self::synthesize_kbd_state(ElementState::Released, &kbd_state);
                    MatchResult::MessagesToDispatch(self.pending.complete_multi(key_events))
@@ -334,11 +334,11 @@ impl KeyEventBuilder {
        // We are synthesizing the press event for caps-lock first for the following reasons:
        // 1. If caps-lock is *not* held down but *is* active, then we have to synthesize all
        //    printable keys, respecting the caps-lock state.
-        // 2. If caps-lock is held down, we could choose to sythesize its keypress after every other
-        //    key, in which case all other keys *must* be sythesized as if the caps-lock state was
-        //    be the opposite of what it currently is.
+        // 2. If caps-lock is held down, we could choose to synthesize its keypress after every
+        //    other key, in which case all other keys *must* be sythesized as if the caps-lock state
+        //    was be the opposite of what it currently is.
        // --
-        // For the sake of simplicity we are choosing to always sythesize
+        // For the sake of simplicity we are choosing to always synthesize
        // caps-lock first, and always use the current caps-lock state
        // to determine the produced text
        if is_key_pressed!(VK_CAPITAL) {
@@ -556,7 +556,7 @@ impl PartialKeyEventInfo {
                // We convert dead keys into their character.
                // The reason for this is that `key_without_modifiers` is designed for key-bindings,
                // but the US International layout treats `'` (apostrophe) as a dead key and the
-                // reguar US layout treats it a character. In order for a single binding
+                // regular US layout treats it a character. In order for a single binding
                // configuration to work with both layouts, we forward each dead key as a character.
                Key::Dead(k) => {
                    if let Some(ch) = k {
--- a/src/platform_impl/windows/mod.rs
+++ b/src/platform_impl/windows/mod.rs
@@ -67,7 +67,7 @@ unsafe impl Sync for PlatformSpecificWindowAttributes {}
 pub struct DeviceId(u32);

 impl DeviceId {
-    pub const unsafe fn dummy() -> Self {
+    pub const fn dummy() -> Self {
        DeviceId(0)
    }
 }
@@ -103,7 +103,7 @@ unsafe impl Send for WindowId {}
 unsafe impl Sync for WindowId {}

 impl WindowId {
-    pub const unsafe fn dummy() -> Self {
+    pub const fn dummy() -> Self {
        WindowId(0)
    }
 }
--- a/src/platform_impl/windows/raw_input.rs
+++ b/src/platform_impl/windows/raw_input.rs
@@ -263,39 +263,37 @@ pub fn get_keyboard_physical_key(keyboard: RAWKEYBOARD) -> Option<PhysicalKey> {
        scancode_to_physicalkey(scancode as u32)
    };
    if keyboard.VKey == VK_SHIFT {
-        if let PhysicalKey::Code(code) = physical_key {
-            match code {
-                KeyCode::NumpadDecimal
-                | KeyCode::Numpad0
-                | KeyCode::Numpad1
-                | KeyCode::Numpad2
-                | KeyCode::Numpad3
-                | KeyCode::Numpad4
-                | KeyCode::Numpad5
-                | KeyCode::Numpad6
-                | KeyCode::Numpad7
-                | KeyCode::Numpad8
-                | KeyCode::Numpad9 => {
-                    // On Windows, holding the Shift key makes numpad keys behave as if NumLock
-                    // wasn't active. The way this is exposed to applications by the system is that
-                    // the application receives a fake key release event for the shift key at the
-                    // moment when the numpad key is pressed, just before receiving the numpad key
-                    // as well.
-                    //
-                    // The issue is that in the raw device event (here), the fake shift release
-                    // event reports the numpad key as the scancode. Unfortunately, the event
-                    // doesn't have any information to tell whether it's the
-                    // left shift or the right shift that needs to get the fake
-                    // release (or press) event so we don't forward this
-                    // event to the application at all.
-                    //
-                    // For more on this, read the article by Raymond Chen, titled:
-                    // "The shift key overrides NumLock"
-                    // https://devblogs.microsoft.com/oldnewthing/20040906-00/?p=37953
-                    return None;
-                },
-                _ => (),
-            }
+        if let PhysicalKey::Code(
+            KeyCode::NumpadDecimal
+            | KeyCode::Numpad0
+            | KeyCode::Numpad1
+            | KeyCode::Numpad2
+            | KeyCode::Numpad3
+            | KeyCode::Numpad4
+            | KeyCode::Numpad5
+            | KeyCode::Numpad6
+            | KeyCode::Numpad7
+            | KeyCode::Numpad8
+            | KeyCode::Numpad9,
+        ) = physical_key
+        {
+            // On Windows, holding the Shift key makes numpad keys behave as if NumLock
+            // wasn't active. The way this is exposed to applications by the system is that
+            // the application receives a fake key release event for the shift key at the
+            // moment when the numpad key is pressed, just before receiving the numpad key
+            // as well.
+            //
+            // The issue is that in the raw device event (here), the fake shift release
+            // event reports the numpad key as the scancode. Unfortunately, the event
+            // doesn't have any information to tell whether it's the
+            // left shift or the right shift that needs to get the fake
+            // release (or press) event so we don't forward this
+            // event to the application at all.
+            //
+            // For more on this, read the article by Raymond Chen, titled:
+            // "The shift key overrides NumLock"
+            // https://devblogs.microsoft.com/oldnewthing/20040906-00/?p=37953
+            return None;
        }
    }

--- a/src/platform_impl/windows/window.rs
+++ b/src/platform_impl/windows/window.rs
@@ -1129,7 +1129,7 @@ pub(super) struct InitData<'a> {
    pub window: Option<Window>,
 }

-impl<'a> InitData<'a> {
+impl InitData<'_> {
    unsafe fn create_window(&self, window: HWND) -> Window {
        // Register for touch events if applicable
        {
@@ -1186,7 +1186,11 @@ impl<'a> InitData<'a> {
            let file_drop_runner = self.event_loop.runner_shared.clone();
            let file_drop_handler = FileDropHandler::new(
                win.window,
-                Box::new(move |event| file_drop_runner.send_event(event)),
+                Box::new(move |event| {
+                    if let Ok(e) = event.map_nonuser_event() {
+                        file_drop_runner.send_event(e)
+                    }
+                }),
            );

            let handler_interface_ptr =
--- a/src/window.rs
+++ b/src/window.rs
@@ -71,16 +71,13 @@ pub struct WindowId(pub(crate) platform_impl::WindowId);
 impl WindowId {
    /// Returns a dummy id, useful for unit testing.
    ///
-    /// # Safety
+    /// # Notes
    ///
    /// The only guarantee made about the return value of this function is that
    /// it will always be equal to itself and to future values returned by this function.
    /// No other guarantees are made. This may be equal to a real [`WindowId`].
-    ///
-    /// **Passing this into a winit function will result in undefined behavior.**
-    pub const unsafe fn dummy() -> Self {
-        #[allow(unused_unsafe)]
-        WindowId(unsafe { platform_impl::WindowId::dummy() })
+    pub const fn dummy() -> Self {
+        WindowId(platform_impl::WindowId::dummy())
    }
 }

@@ -420,8 +417,8 @@ impl WindowAttributes {
    ///
    /// ## Platform-specific
    ///
-    /// - **macOS**: if `false`, [`NSWindowSharingNone`] is used but doesn't completely
-    /// prevent all apps from reading the window content, for instance, QuickTime.
+    /// - **macOS**: if `false`, [`NSWindowSharingNone`] is used but doesn't completely prevent all
+    ///   apps from reading the window content, for instance, QuickTime.
    /// - **iOS / Android / Web / x11 / Orbital:** Ignored.
    ///
    /// [`NSWindowSharingNone`]: https://developer.apple.com/documentation/appkit/nswindowsharingtype/nswindowsharingnone
@@ -469,8 +466,8 @@ impl WindowAttributes {
    /// ## Platform-specific
    ///
    /// - **Windows** : A child window has the WS_CHILD style and is confined
-    /// to the client area of its parent window. For more information, see
-    /// <https://docs.microsoft.com/en-us/windows/win32/winmsg/window-features#child-windows>
+    ///   to the client area of its parent window. For more information, see
+    ///   <https://docs.microsoft.com/en-us/windows/win32/winmsg/window-features#child-windows>
    /// - **X11**: A child window is confined to the client area of its parent window.
    /// - **Android / iOS / Wayland / Web:** Unsupported.
    #[cfg(feature = "rwh_06")]
@@ -533,9 +530,9 @@ impl Window {
    ///     provided by XRandR.
    ///
    ///   If `WINIT_X11_SCALE_FACTOR` is set to `randr`, it'll ignore the `Xft.dpi` field and use
-    /// the   XRandR scaling method. Generally speaking, you should try to configure the
-    /// standard system   variables to do what you want before resorting to
-    /// `WINIT_X11_SCALE_FACTOR`.
+    ///   the   XRandR scaling method. Generally speaking, you should try to configure the
+    ///   standard system   variables to do what you want before resorting to
+    ///   `WINIT_X11_SCALE_FACTOR`.
    /// - **Wayland:** The scale factor is suggested by the compositor for each window individually
    ///   by using the wp-fractional-scale protocol if available. Falls back to integer-scale
    ///   factors otherwise.
@@ -1277,7 +1274,8 @@ impl Window {
    ///
    /// - **macOS:** IME must be enabled to receive text-input where dead-key sequences are
    ///   combined.
-    /// - **iOS / Android / Web / Orbital:** Unsupported.
+    /// - **iOS / Android:** This will show / hide the soft keyboard.
+    /// - **Web / Orbital:** Unsupported.
    /// - **X11**: Enabling IME will disable dead keys reporting during compose.
    ///
    /// [`Ime`]: crate::event::WindowEvent::Ime
@@ -1374,14 +1372,14 @@ impl Window {
        self.window.maybe_queue_on_main(move |w| w.set_theme(theme))
    }

-    /// Returns the current window theme override.
+    /// Returns the current window theme.
    ///
-    /// Returns `None` if the current theme is set as the system default, or if it cannot be
-    /// determined on the current platform.
+    /// Returns `None` if it cannot be determined on the current platform.
    ///
    /// ## Platform-specific
    ///
-    /// - **iOS / Android / Wayland / x11 / Orbital:** Unsupported, returns `None`.
+    /// - **iOS / Android / x11 / Orbital:** Unsupported.
+    /// - **Wayland:** Only returns theme overrides.
    #[inline]
    pub fn theme(&self) -> Option<Theme> {
        let _span = tracing::debug_span!("winit::Window::theme",).entered();
@@ -1392,8 +1390,8 @@ impl Window {
    ///
    /// ## Platform-specific
    ///
-    /// - **macOS**: if `false`, [`NSWindowSharingNone`] is used but doesn't completely
-    /// prevent all apps from reading the window content, for instance, QuickTime.
+    /// - **macOS**: if `false`, [`NSWindowSharingNone`] is used but doesn't completely prevent all
+    ///   apps from reading the window content, for instance, QuickTime.
    /// - **iOS / Android / x11 / Wayland / Web / Orbital:** Unsupported.
    ///
    /// [`NSWindowSharingNone`]: https://developer.apple.com/documentation/appkit/nswindowsharingtype/nswindowsharingnone
--- a/tests/send_objects.rs
+++ b/tests/send_objects.rs
@@ -3,11 +3,16 @@ fn needs_send<T: Send>() {}

 #[test]
 fn event_loop_proxy_send() {
-    needs_send::<winit::event_loop::EventLoopProxy>();
+    #[allow(dead_code)]
+    fn is_send<T: 'static + Send>() {
+        // ensures that `winit::EventLoopProxy<T: Send>` implements `Send`
+        needs_send::<winit::event_loop::EventLoopProxy<T>>();
+    }
 }

 #[test]
 fn window_send() {
+    // ensures that `winit::Window` implements `Send`
    needs_send::<winit::window::Window>();
 }

@@ -18,6 +23,7 @@ fn window_builder_send() {

 #[test]
 fn ids_send() {
+    // ensures that the various `..Id` types implement `Send`
    needs_send::<winit::window::WindowId>();
    needs_send::<winit::event::DeviceId>();
    needs_send::<winit::monitor::MonitorHandle>();
--- a/Show More
+++ b/Show More
Author	SHA1	Message	Date
Kirill Chibisov	9cbce055d3	Winit version 0.30.7	2024-12-22 23:00:41 +03:00
Kirill Chibisov	727583ffbf	x11: fix KeyboardInput delivered twice with IME The filtered events were still processed even though they shouldn't once we know that they're filtered. Fixes #4048.	2024-12-22 23:00:41 +03:00
Kirill Chibisov	82f0949aea	Winit version 0.30.6	2024-12-21 09:05:36 +03:00
Kirill Chibisov	5d2151e893	chore: fix typos	2024-12-21 09:05:36 +03:00
daxpedda	6f22822025	Update minimum version of `wasm-bindgen` (#3860 )	2024-12-21 09:05:36 +03:00
Mads Marquart	cf829a44e7	ci: fix cargo deny	2024-12-21 09:05:36 +03:00
dependabot[bot]	f2fb7dee3d	build(deps): bump EmbarkStudios/cargo-deny-action Signed-off-by: dependabot[bot] <support@github.com> Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com> Co-authored-by: daxpedda <daxpedda@gmail.com>	2024-12-21 09:05:36 +03:00
Skip R.	836e717021	macOS: Fix checking for undocumented cursors (#4033 ) `AnyClass::responds_to` delegates to `class_respondsToSelector`, a function provided by the Objective-C runtime. However, at some point, this began to return `false` for selectors referring to undocumented cursors, despite the cursors remaining accessible via said selectors. That this check fails prevents the cursors from being used. We can instead send `respondsToSelector:` to the `NSCursor` class itself. As an instance method, this is nominally impossible; however, Apple grants an exemption[1] that permits class objects to perform instance methods defined in the root class. Checking for the undocumented cursors in this way gets them working again, at least on macOS Sequoia 15.1.1. [1]: https://developer.apple.com/library/archive/documentation/Cocoa/Conceptual/ObjectiveC/Chapters/ocObjectsClasses.html#//apple_ref/doc/uid/TP30001163-CH11-TPXREF120	2024-12-21 09:05:36 +03:00
Mads Marquart	1e44c354fe	Fix MonitorHandle PartialEq and Hash on iOS (#4013 )	2024-12-21 09:05:36 +03:00
Mads Marquart	1fb118031c	macOS: Fix crash when pressing Caps Lock (#4024 ) Events emitted by `flagsChanged:` cannot access `charactersIgnoringModifiers`. We were previously doing this because we were trying to re-use the `create_key_event` function, but that is unsuited for this purpose, so I have separated the `flagsChanged:` logic out from it.	2024-12-21 09:05:36 +03:00
Mads Marquart	d6ab3dcb86	chore: fix clippy lints	2024-12-21 09:05:36 +03:00
Rodrigo Rivas Costa	d828523b39	x11: move up XInput2 event registration It should be done before mapping the window, or we could lose the firsst XInput2 events, such as the first FocusIn. Fixes #2841.	2024-12-21 09:05:36 +03:00
Nico Burns	fccfd359db	macOS: set activation policy by default if app is not bundled (#3961 )	2024-12-21 09:05:36 +03:00
lucasmerlin	5c1cc652c4	Basic iOS IME support (#3823 ) This implements basic iOS IME support (typing, backspace, support for emojis etc but no autocomplete or copy / paste menu). Co-authored-by: Mads Marquart <mads@marquart.dk>	2024-12-21 09:05:36 +03:00
Piotr Podusowski	1d18a6ca57	android: use show_soft_input to summon the keyboard Route it via the `Window::set_ime_allowed` like on iOS.	2024-12-21 09:05:36 +03:00
Mads Marquart	bab2d82fd3	docs: add `fn main` to root examples This is not strictly required, but makes the examples a bit easier to read understand (especially since the `EventLoop` really _should_ be created inside `fn main`, and not in some random function potentially running on a random thread).	2024-12-21 09:05:36 +03:00
Matěj Laitl	bbab3d8e35	x11: fix WindowAttributesExtX11::with_x11_screen() Based on https://github.com/rust-windowing/winit/pull/3973, which should be merged first. There's an API to programmatically specify X11 screen id (override what is determined from the `DISPLAY` env variable), but it doesn't work. Seeting up X Server with 2 screens and calling `DISPLAY=:0 X11_SCREEN_ID=1 cargo run --example window` should be equivalent to calling `DISPLAY=:0.1 cargo run --example window` The latter works (and places the window on the correct screen), but the former yields `failed to create initial window: Os(OsError { line: 620, file: "src/platform_impl/linux/x11/window.rs", error: X11Error(X11Error { error_kind: Match, error_code: 8, sequence: 219, bad_value: 1319, minor_opcode: 0, major_opcode: 1, extension_name: None, request_name: Some("CreateWindow") }) })` _Here `1319` is the root window id for screen 0, which doesn't match the screen 1 that we request._ The problem is that we need to factor in the screen id when determining the parent (root) window when not explicitly set. This patch does that. --- Also: Extend the window example with X11_{SCREEN,VISUAL}_ID env variables	2024-12-21 09:05:36 +03:00
Matěj Laitl	b02a70e6bb	x11: iterate only visuals from the matching screen	2024-12-21 09:05:36 +03:00
AngelicosPhosphoros	9ceb8d4144	Improve waiting for messages on Windows Previous version used [`SetTimer`] with `GetMessageW` for waiting. The downside of UI timers like ones created by `SetTimer`, is that they may be late by up to 15-16 ms. To fix this behaviour, I added use of high resolution timers created by [`CreateWaitableTimerExW`] with the flag `CREATE_WAITABLE_TIMER_HIGH_RESOLUTION`. In my previous experience, waiting on such timers have precision of roundly 0.5 ms which is the best available on Windows at the moment. I use [`MsgWaitForMultipleObjectsEx`] to wait simultaneously for both timer and newly arriving events. Unfortunately, high resolution timers are available only since Windows 10 1803. However: 1. Win 10 is already getting to the end of support, like all previous versions, so it is OK to rely on APIs introduced in it; 2. I use `dwMilliseconds` parameter of `MsgWaitForMultipleObjectsEx` as a fallback. It should perform not worse compared to waiting for events from `SetTimer`. I also refactored code to remove event dispatching from function responsible for waiting for events. This provides more clear separations of concern and avoids unnecessary duplication of dispatching logic. After [review] from @rib, I also moved the waiting itself from `wait_for_messages` method to separate function, so it is clearly seen that `wait_for_messages` do 3 things: notify app that we about to wait, wait, notify that we have new events. I have tested behaviour using a egui app with Vulkan rendering with `VK_PRESENT_MODE_IMMEDIATE_KHR`, and older version consistently have twice less FPS than requested (e.g. 30 FPS when limit is 60 and 60 FPS when limit is 120) while newer version works more correctly (almost always 60 FPS when limit is 60, and only 5-10 frames missing when FPS is set to 120 or more). Fixes https://github.com/rust-windowing/winit/issues/1610 [`CreateWaitableTimerExW`]: https://learn.microsoft.com/en-us/windows/win32/api/synchapi/nf-synchapi-createwaitabletimerexw [`MsgWaitForMultipleObjectsEx`]: https://learn.microsoft.com/en-us/windows/win32/api/winuser/nf-winuser-msgwaitformultipleobjectsex [`SetTimer`]: https://learn.microsoft.com/en-us/windows/win32/api/winuser/nf-winuser-settimer [review]: https://github.com/rust-windowing/winit/pull/3950#discussion_r1800184479	2024-12-21 09:05:36 +03:00
Shane Celis	485ae90aae	macOS: fix panic during drag_window Return error from it instead of unwrapping.	2024-12-21 09:05:36 +03:00
Kirill Chibisov	107bf91a2d	x11: don't forward key events to IME when it's disabled Fixes #3815.	2024-12-21 09:05:36 +03:00
Mads Marquart	1bc405e526	macOS: Fix move event sometimes being triggered on resize (#3914 )	2024-12-21 09:05:36 +03:00
Kirill Chibisov	685090021b	chore: fix nightly CI on linux/ios Co-authored-by: Mads Marquart <mads@marquart.dk>	2024-12-21 09:05:36 +03:00
purajit	cfe7eb8954	Prevent winit from overriding LSUIElement in package manifests (#3920 )	2024-12-21 09:05:36 +03:00
Tarek Abdel Sater	838b2459a7	macOS: add option to explicitly hide menu/dock in Borderless (#3882 )	2024-12-21 09:05:36 +03:00
John Nunley	f4a5ad9c22	x11: use more information in X11 "not supported" errors This makes it so, when X11 fails to initialize due to not loading a library, it provides more verbose information on what exactly happened. Fixes #3883. Signed-off-by: John Nunley <dev@notgull.net> Co-authored-by: Kirill Chibisov <contact@kchibisov.com>	2024-12-21 09:05:36 +03:00
John Nunley	00ecd1533e	m: Ignore mutex poisoning in X11_BACKEND A panic doesn't really put any of the fields in XConnection into an invalid state, so there is no real reason to panic when poisoning is detected. So just ignore the poison. Closes #3870 Signed-off-by: John Nunley <dev@notgull.net>	2024-12-21 09:05:36 +03:00
Kirill Chibisov	114512bb32	Winit version 0.30.5	2024-08-08 21:26:00 +03:00
Kirill Chibisov	8c07319ced	chore: drop libera link It has low amount of users and not active, so better direct people straight to matrix at this point.	2024-08-08 21:26:00 +03:00
daxpedda	fa3ec006e2	Add `ActiveEventLoop::system_theme()` This also fixes macOS returning `None` in `Window::theme()` if no theme override is set, instead it now returns the system theme. MacOS and Wayland were the only ones working correctly according to the documentation, which was an oversight. The documentation was "fixed" now. Fixes #3837.	2024-08-08 21:26:00 +03:00
Pascal Hertleif	f3d1f922f9	macOS: skip releasing unavailable monitors Prevent assertion error when trying to close a fullscreen window that was on a display that got disconnected.	2024-08-08 21:26:00 +03:00
daxpedda	77e8fe6094	Windows: use `Box::leak()` instead of `Box::into_raw()` This was detected by a new change in Nightly Rust that applied `#[must_use]` to the return value of `Box::into_raw()`.	2024-08-08 21:26:00 +03:00
Kirill Chibisov	5fce4a09de	android: add `{Active,}EventLoopExtAndroid::android_app` This type comes from the user and stored for the entire lifetime, so no need to hide it from them after they've passed it to winit. Fixes #3818.	2024-08-08 21:26:00 +03:00
daxpedda	5735786f42	Fix CI for Rust v1.80 (#3822 ) `clippy::doc_lazy_continuation` was added, which needed some fixing from our side.	2024-08-08 21:26:00 +03:00
daxpedda	9ca8c09208	Web: don't block pen input (#3813 )	2024-08-08 21:26:00 +03:00
daxpedda	4b1aa51094	macOS: fix building with `feature = "rwh_04"`	2024-08-08 21:26:00 +03:00
daxpedda	1dec9b4b33	Web: implement `Error` for `CustomCursorError` (#3793 )	2024-08-08 21:26:00 +03:00
Kirill Chibisov	04d8a284a0	Winit version 0.30.4	2024-07-16 21:04:25 +03:00
daxpedda	949cb0f203	Web: fix `MouseMotion` coordinate space (#3770 )	2024-07-16 21:04:25 +03:00
daxpedda	bf68ac0b14	Web: fix `WindowEvent::Resized` not using rAF (#3790 )	2024-07-16 21:04:25 +03:00
Kirill Chibisov	ba188376d1	wayland: bump dependencies Update SCTK as a follow-up to `1170554dbd` (ignore events to dead objects) fixing it for wl_output.	2024-07-16 21:04:25 +03:00
daxpedda	6509f8a18b	Make `DeviceId/WindowId::dummy()` safe (#3784 )	2024-07-16 21:04:25 +03:00
daxpedda	71dea4637d	Fix CI (#3775 )	2024-07-16 21:04:25 +03:00
Kirill Chibisov	ec24c3efd3	wayland: ignore events for dead objects Nothing wrong will happen if we ignore events when compositor is at wrong, at least crashing because compositor is just _wrong_ probably is not a great option. Links: https://github.com/alacritty/alacritty/issues/8065	2024-07-16 21:04:25 +03:00
Mads Marquart	feca480b4c	Avoid `path` when importing modules (#3755 ) Rust tooling generally works better this way. This includes rust-analyzer, but more noticeably the output from `tracing` typically prints the module path, which did not correspond to the actual file system before. Concretely, tracing output from the macOS backend changes from printing: `winit::platform_impl::platform::util` To printing: `winit::platform_impl::macos::util`	2024-07-16 21:04:25 +03:00
John Nunley	655fdc896f	ci: Use taiki-e/checkout-action taiki-e/checkout-action has a few advantages over actions/checkout, such as: - It is written in Bash rather than Node.js - It does not have frequent breaking changes, reducing churn Signed-off-by: John Nunley <dev@notgull.net>	2024-07-16 21:04:25 +03:00
msiglreith	faa641e57f	Add notgull as Windows maintainer	2024-07-16 21:04:25 +03:00
msiglreith	7c81364e1c	Update codeowner list	2024-07-16 21:04:25 +03:00
Bruce Mitchener	6abfef1220	Use `default-features`, not `default_features` (#3746 ) The latter syntax is deprecated and will be removed in Rust 2024 edition. This also generates a warning with current versions of Rust.	2024-07-16 21:04:25 +03:00
Kirill Chibisov	d2d4d20108	Winit version 0.30.3	2024-06-21 20:16:14 +03:00
daxpedda	d8f4d8f1b7	Web: implement `WaitUntilStrategy` (#3739 )	2024-06-21 20:16:14 +03:00
daxpedda	a974640a66	Web: set control flow strategies on `EventLoop` (#3740 )	2024-06-21 20:16:14 +03:00
Mads Marquart	3d7d766182	macOS: set the theme on the NSWindow, instead of application-wide This new implementation uses: - The NSAppearanceCustomization protocol for retrieving the appearance of the window, instead of using the application-wide `-[NSApplication effectiveAppearance]`. - Key-Value observing for observing the `effectiveAppearance` to compute the `ThemeChanged` event, instead of using the undocumented `AppleInterfaceThemeChangedNotification` notification. This also fixes `WindowBuilder::with_theme` not having any effect, and the conversion between `Theme` and `NSAppearance` is made a bit more robust.	2024-06-21 20:16:14 +03:00
Kirill Chibisov	c73d8cff20	x11: fix build on arm The c_char type, which was used under the hood is different depending on arch, thus use it directly instead of i8. Fixes #3735.	2024-06-21 20:16:14 +03:00
Kirill Chibisov	79aa95b212	Winit version 0.30.2	2024-06-15 20:00:04 +03:00
Kirill Chibisov	ecd14688dc	Revert: Web: don't wait for polling when sending events This is a breaking change, thus revert it for patch series.	2024-06-15 20:00:04 +03:00
Kirill Chibisov	b512ed1e63	macOS: fix opacity handling Not using `NSColor::clearColor()` results in Quartz thinking that the window is not transparent at all, which results in artifacts. However, not setting the `windowBackgroundColor` in `Window::set_transparent` results in border not properly rendered. Fixes: `94664ff687` (Don't set the background color)	2024-06-15 20:00:04 +03:00
Kirill Chibisov	96388f4f6b	chore: address 1.79 clippy lints	2024-06-15 20:00:04 +03:00
daxpedda	1745b01502	Web: fix crash `InnerSizeWriter::request_inner_size()` (#3727 )	2024-06-15 20:00:04 +03:00
daxpedda	54e974c090	Web: don't overwrite cursor with `CursorIcon::Default` (#3729 )	2024-06-15 20:00:04 +03:00
daxpedda	b14d5c0c99	Web: queue `EventLoopProxy::send_event()` to microtask	2024-06-15 20:00:04 +03:00
John Nunley	437747b966	Winit version 0.30.1 Signed-off-by: John Nunley <dev@notgull.net>	2024-06-10 18:40:33 +03:00
Mads Marquart	21e266f3b7	macOS/iOS: Various refactorings in application state (#3720 ) I'm preparing to get rid of our application delegate in favour of registering notification observers, to do so I'm renaming `app_delegate.rs` to `app_state.rs`, and moving the functionality out of the Objective-C method into a normal method. Additionally, `AppState` previously implemented `Default`, but really, this was a hack done because someone (probably myself) was too lazy to write out the full initialization in `AppDelegate::new`.	2024-06-10 18:40:33 +03:00
Mads Marquart	3a0928af45	macOS: Improve event queuing (#3708 ) * Use AppKit's internal queuing mechanisms This allows events to be queued in a more consistent order, they're now interleaved with events that we handle immediately (like redraw events), instead of being handled afterwards. * Only queue events if necessary This makes the call stack / backtraces easier to understand whenever possible, and generally improves upon the order in which events are delivered.	2024-06-10 18:40:33 +03:00
Philippe Renon	ad92b4f89d	doc: clarify `Window::pre_present_notify` availability Fixes #3703.	2024-06-10 18:40:33 +03:00
ShikiSuen	bf4445bb62	Handle _selected_range sent to NSTextInputClient.setMarkedText(). (#3619 ) Co-authored-by: Mads Marquart <mads@marquart.dk>	2024-06-10 18:40:33 +03:00
Mads Marquart	391a22217d	Implement ApplicationHandler for `&mut A` and `Box<A>` (#3709 )	2024-06-10 18:40:33 +03:00
Mads Marquart	fb4a674ee5	Update `objc2` to `v0.2.2` (#3702 ) - Use new `bitflags!` support. - Use `objc2-ui-kit`. - Change usage of `Id` to `Retained`.	2024-06-10 18:40:33 +03:00
Diggory Hardy	43f296b2b3	event_loop: add is_x11 and is_wayland on EventLoop	2024-06-10 18:40:33 +03:00
Golden Water	042667c5eb	Resize when size changes on scale change on macOS This fixes an issue where the window glitched due to resize when the user doesn't actually change the window, but macOS function to update window size was still called.	2024-06-10 18:40:33 +03:00
Kirill Chibisov	3206d105fe	chore: explicitly use cfg_aliases 0.2.1 This correctly handles recent nightly lint that requires to explicitly define the CFG guards.	2024-06-10 18:40:33 +03:00
Kevin Müller	1afec3ca0d	bugfix: Replace pointer dereference with read_unaligned On Raspberry Pi, using the Rust crate eframe caused the program to crash on mouse movement. The Backtrace lead to this specific line of code, and the exact error was a "misaligned pointer dereference: address must be a multiple of 0x8 but is xxxx" The edit has been tested with the Raspberry Pi, which works now.	2024-06-10 18:40:33 +03:00
Ryan Burleson	c4a8e9321d	fix doc typo in application.rs (#3676 )	2024-06-10 18:40:33 +03:00
linkmauve	dee7a405fc	Reexport older versions of raw-window-handle When the user decides to use an older version of raw-window-handle, through the rwh_04 or rwh_05 features, it makes sense to reexport the crate so they don’t have to depend on it manually and can instead use winit::raw_window_handle.	2024-06-10 18:40:33 +03:00
Mads Marquart	a298b4d00e	Reduce usage of direct `msg_send!`	2024-06-10 18:40:33 +03:00
Mads Marquart	aebd5edc9e	macOS: Move util::EMPTY_RANGE to usage spot (#3685 )	2024-06-10 18:40:33 +03:00
Mads Marquart	c801b69d3e	Retain ApplicationDelegate in NSWindowDelegate and NSView The delegate is only weakly referenced by NSApplication, so getting it from there may fail if the event loop has been dropped. Fixes #3668.	2024-06-10 18:40:33 +03:00
Mads Marquart	ebd6454f8f	Use `rustc-check-cfg` (#3682 )	2024-06-10 18:40:33 +03:00
daxpedda	4f2f0bc08f	Web: fix Clippy v1.78 FPs (#3678 )	2024-06-10 18:40:33 +03:00
Kirill Chibisov	4b3c0655bf	Winit version 0.30.0	2024-04-27 19:00:38 +04:00
Joshua Pedrick	0812adc983	Add UIGestureRecognizerDelegate and PanGestureRecogniser (#3597 ) - Allow all gestures simultaneously recognized. - Add PanGestureRecogniser with min/max number of touches. - Fix sending delta values relative to Update instead to match macOS. - Fix rotation gesture units from iOS to be in degrees instead of radians. Co-authored-by: Mads Marquart <mads@marquart.dk>	2024-04-27 19:00:38 +04:00
Mads Marquart	cd6ec19300	Don't set the background color when initializing with transparency (#3657 ) Setting the background color changes how the window title bar appears, which is something that the application should customize itself if it wants this behaviour (and also, it wasn't set when calling `set_transparent`, so the behaviour wasn't consistent).	2024-04-27 19:00:38 +04:00
growfrow	61bd8172bd	chore: fix some typos in comments (#3635 ) Signed-off-by: growfrow <growfrow@outlook.com>	2024-04-27 19:00:38 +04:00
Kirill Chibisov	c04c113e7e	chore: ensure that `.cargo` config is not published Just in case, so the correct changelog will be rendered when pulling the crate from the crates.io as archive and trying to build it.	2024-04-27 19:00:38 +04:00
Marijn Suijten	ce32a3024e	android: bump to `ndk 0.9.0` and `android-activity 0.6.0`	2024-04-27 19:00:38 +04:00