Mark platform extension enums as #[non_exhaustive]

OS-defined sets and error enums in the platform crates can now gain
variants without a breaking change.

winit-appkit/src/lib.rs

@@ -334,6 +334,7 @@ impl WindowExtMacOS for dyn Window + '_ {
 /// Corresponds to `NSApplicationActivationPolicy`.
 #[derive(Debug, Default, Clone, Copy, PartialEq, Eq, Hash)]
 #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
+#[non_exhaustive]
 pub enum ActivationPolicy {
     /// Corresponds to `NSApplicationActivationPolicyRegular`.
     #[default]

winit-common/src/xkb/mod.rs

@@ -41,6 +41,7 @@ pub fn reset_dead_keys() {
 }
 
 #[derive(Debug)]
+#[non_exhaustive]
 pub enum Error {
     /// libxkbcommon is not available
     XKBNotFound,

winit-uikit/src/lib.rs

@@ -418,6 +418,7 @@ impl MonitorHandleExtIOS for MonitorHandle {
 /// Valid orientations for a particular [`Window`].
 #[derive(Default, Debug, Clone, Copy, PartialEq, Eq, Hash)]
 #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
+#[non_exhaustive]
 pub enum ValidOrientations {
     /// Excludes `PortraitUpsideDown` on iphone
     #[default]
@@ -448,6 +449,7 @@ bitflags::bitflags! {
 
 #[derive(Clone, Copy, Debug, Default, PartialEq, Eq, Hash)]
 #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
+#[non_exhaustive]
 pub enum StatusBarStyle {
     #[default]
     Default,

winit-web/src/lib.rs

@@ -417,6 +417,7 @@ impl ActiveEventLoopExtWeb for dyn ActiveEventLoop + '_ {
 /// Strategy used for [`ControlFlow::Poll`][crate::event_loop::ControlFlow::Poll].
 #[derive(Clone, Copy, Debug, Default, Eq, Hash, PartialEq)]
 #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
+#[non_exhaustive]
 pub enum PollStrategy {
     /// Uses [`Window.requestIdleCallback()`] to queue the next event loop. If not available
     /// this will fallback to [`setTimeout()`].
@@ -444,6 +445,7 @@ pub enum PollStrategy {
 /// Strategy used for [`ControlFlow::WaitUntil`][crate::event_loop::ControlFlow::WaitUntil].
 #[derive(Clone, Copy, Debug, Default, Eq, Hash, PartialEq)]
 #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
+#[non_exhaustive]
 pub enum WaitUntilStrategy {
     /// Uses the [Prioritized Task Scheduling API] to queue the next event loop. If not available
     /// this will fallback to [`setTimeout()`].
@@ -478,6 +480,7 @@ impl Future for CustomCursorFuture {
 
 #[derive(Clone, Debug, Eq, Hash, PartialEq)]
 #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
+#[non_exhaustive]
 pub enum CustomCursorError {
     Blob,
     Decode(String),
@@ -507,6 +510,7 @@ impl Future for MonitorPermissionFuture {
 }
 
 #[derive(Clone, Copy, Debug, Eq, Hash, PartialEq)]
+#[non_exhaustive]
 pub enum MonitorPermissionError {
     /// User has explicitly denied permission to query detailed monitor information.
     Denied,
@@ -664,6 +668,7 @@ impl Future for OrientationLockFuture {
 }
 
 #[derive(Clone, Copy, Debug, Eq, Hash, PartialEq)]
+#[non_exhaustive]
 pub enum OrientationLockError {
     Unsupported,
     Busy,

winit-win32/src/lib.rs

@@ -54,6 +54,7 @@ pub type HMONITOR = *mut c_void;
 /// [`DWM_SYSTEMBACKDROP_TYPE docs`]: https://learn.microsoft.com/en-us/windows/win32/api/dwmapi/ne-dwmapi-dwm_systembackdrop_type
 #[derive(Debug, Default, Clone, Copy, PartialEq, Eq, Hash)]
 #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
+#[non_exhaustive]
 pub enum BackdropType {
     /// Corresponds to `DWMSBT_AUTO`.
     ///
@@ -113,6 +114,7 @@ impl Default for Color {
 #[repr(i32)]
 #[derive(Debug, Default, Clone, Copy, PartialEq, Eq, Hash)]
 #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
+#[non_exhaustive]
 pub enum CornerPreference {
     /// Corresponds to `DWMWCP_DEFAULT`.
     ///

winit-x11/src/dnd.rs

@@ -22,6 +22,7 @@ pub enum DndState {
 }
 
 #[derive(Debug)]
+#[non_exhaustive]
 pub enum UriListParseError {
     EmptyData,
     InvalidUtf8(#[allow(dead_code)] Utf8Error),

winit-x11/src/lib.rs

@@ -32,6 +32,7 @@ pub use dnd::{Selection, SelectionReader, SelectionType, UriListParseError};
 /// [`_NET_WM_WINDOW_TYPE`](https://specifications.freedesktop.org/wm-spec/wm-spec-1.5.html).
 #[derive(Debug, Default, Copy, Clone, PartialEq, Eq, Hash)]
 #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
+#[non_exhaustive]
 pub enum WindowType {
     /// A desktop feature. This can include a single window containing desktop icons with the same
     /// dimensions as the screen, allowing the desktop environment to have full control of the