Rémi Bernon : winex11: Forcefully unmap the clipping window when it loses focus.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: b831dbfc3bae2775dda3603c8c42f9ecbc94f2ea
URL:    https://gitlab.winehq.org/wine/wine/-/commit/b831dbfc3bae2775dda3603c8c42f9e...

Author: Rémi Bernon 
Date:   Fri Oct 13 13:34:32 2023 +0200

winex11: Forcefully unmap the clipping window when it loses focus.

Fixes cursor not being released when alt-tabbing out of an unresponsive
foreground window.

---

dlls/winex11.drv/event.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/dlls/winex11.drv/event.c b/dlls/winex11.drv/event.c
index c3c8d9a4070..053c0e2ff47 100644
--- a/dlls/winex11.drv/event.c
+++ b/dlls/winex11.drv/event.c
@@ -843,7 +843,13 @@ static BOOL X11DRV_FocusOut( HWND hwnd, XEvent *xev )

if (event->detail == NotifyPointer)
     {
-        if (!hwnd && event->window == x11drv_thread_data()->clip_window) NtUserClipCursor( NULL );
+        if (!hwnd && event->window == x11drv_thread_data()->clip_window)
+        {
+            NtUserClipCursor( NULL );
+            /* NtUserClipCursor will ask the foreground window to ungrab the cursor, but
+             * it might not be responsive, so unmap the clipping window ourselves too */
+            XUnmapWindow( event->display, event->window );
+        }
         return TRUE;
     }
     if (!hwnd) return FALSE;