From 93211a27ddf1f9f5c182b97628ba03e871584ae5 Mon Sep 17 00:00:00 2001 From: Andreas Reich Date: Mon, 18 May 2026 17:36:56 +0200 Subject: [PATCH] Always enable windows undecorated shadows (#8169) --- crates/egui-winit/src/lib.rs | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) diff --git a/crates/egui-winit/src/lib.rs b/crates/egui-winit/src/lib.rs index bbb22f0ab..331c1f526 100644 --- a/crates/egui-winit/src/lib.rs +++ b/crates/egui-winit/src/lib.rs @@ -1680,7 +1680,14 @@ fn process_viewport_command( ViewportCommand::Fullscreen(v) => { window.set_fullscreen(v.then_some(winit::window::Fullscreen::Borderless(None))); } - ViewportCommand::Decorations(v) => window.set_decorations(v), + ViewportCommand::Decorations(v) => { + window.set_decorations(v); + #[cfg(target_os = "windows")] + { + use winit::platform::windows::WindowExtWindows as _; + window.set_undecorated_shadow(!v); + } + } ViewportCommand::WindowLevel(l) => window.set_window_level(match l { egui::viewport::WindowLevel::AlwaysOnBottom => WindowLevel::AlwaysOnBottom, egui::viewport::WindowLevel::AlwaysOnTop => WindowLevel::AlwaysOnTop, @@ -1960,6 +1967,7 @@ pub fn create_winit_window_attributes( if let Some(show) = _taskbar { window_attributes = window_attributes.with_skip_taskbar(!show); } + window_attributes = window_attributes.with_undecorated_shadow(!decorations.unwrap_or(true)); } #[cfg(target_os = "macos")]