Windows: Delayed Message Boxes Fix. (#1769)

VZout · web-flow · commit 77d5d20391ca · 2020-11-24T23:05:29.000+01:00
diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -1,5 +1,6 @@
 # Unreleased
 
+- On Windows, fix bug causing message boxes to appear delayed.
 - On Android, calling `WindowEvent::Focused` now works properly instead of always returning false. 
 - On Windows, fix alt-tab behaviour by removing borderless fullscreen "always on top" flag.
 - On Windows, fix bug preventing windows with transparency enabled from having fully-opaque regions.
diff --git a/src/platform_impl/windows/event_loop.rs b/src/platform_impl/windows/event_loop.rs
@@ -1973,7 +1973,8 @@ unsafe extern "system" fn thread_event_target_callback<T: 'static>(
                 }
             }
 
-            0
+            // Default WM_PAINT behaviour. This makes sure modals and popups are shown immediatly when opening them.
+            commctrl::DefSubclassProc(window, msg, wparam, lparam)
         }
 
         winuser::WM_INPUT_DEVICE_CHANGE => {

Original file line number	Diff line number	Diff line change
`@@ -1973,7 +1973,8 @@ unsafe extern "system" fn thread_event_target_callback<T: 'static>(`
`1973`	`1973`	`}`
`1974`	`1974`	`}`
`1975`	`1975`
`1976`		`- 0`
	`1976`	`+ // Default WM_PAINT behaviour. This makes sure modals and popups are shown immediatly when opening them.`
	`1977`	`+ commctrl::DefSubclassProc(window, msg, wparam, lparam)`
`1977`	`1978`	`}`
`1978`	`1979`
`1979`	`1980`	`winuser::WM_INPUT_DEVICE_CHANGE => {`