winex11: Avoid erasing the window when changing the pixel format.

diff --git a/dlls/winex11.drv/window.c b/dlls/winex11.drv/window.c
index e8535bc2af053e0bf8009c92e77ebbf875d669fd..26f037a59029a0790b9368133c5fa872a6cc1bd7 100644 (file)
--- a/dlls/winex11.drv/window.c
+++ b/dlls/winex11.drv/window.c
@@ -527,7 +527,7 @@ done:
     /* force DCE invalidation */
     SetWindowPos( hwnd, 0, 0, 0, 0, 0,
                   SWP_NOACTIVATE | SWP_NOZORDER | SWP_NOSIZE | SWP_NOMOVE |
-                  SWP_NOREDRAW | SWP_NOSENDCHANGING | SWP_STATECHANGED);
+                  SWP_NOREDRAW | SWP_DEFERERASE | SWP_NOSENDCHANGING | SWP_STATECHANGED);
     return TRUE;
 }