fix wayland

src/platform_impl/linux/wayland/window/mod.rs

@@ -621,9 +621,8 @@ impl Window {
     }
 
     #[inline]
-    pub fn set_theme(&self, _theme: Theme) {
-        #[cfg(feature = "sctk-adwaita")]
-        window.set_frame_config(theme.into());
+    pub fn set_theme(&self, theme: Theme) {
+        self.send_request(WindowRequest::Theme(theme));
     }
 
     #[inline]

src/platform_impl/linux/wayland/window/shim.rs

@@ -96,6 +96,9 @@ pub enum WindowRequest {
 
     /// Window should be closed.
     Close,
+
+    /// Change window theme.
+    Theme(Theme),
 }
 
 // The window update comming from the compositor.
@@ -537,6 +540,10 @@ pub fn handle_window_requests(winit_state: &mut WinitState) {
                     let event_sink = &mut winit_state.event_sink;
                     event_sink.push_window_event(WindowEvent::Destroyed, *window_id);
                 }
+                WindowRequest::Theme(_theme) => {
+                    #[cfg(feature = "sctk-adwaita")]
+                    window_handle.window.set_frame_config(_theme.into());
+                }
             };
         }
     }