File 6256.patch of Package wine

From 720648159bb3f7cabb4be206d15555eb6950452a Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?R=C3=A9mi=20Bernon?= <rbernon@codeweavers.com>
Date: Mon, 12 Aug 2024 11:19:36 +0200
Subject: [PATCH] win32u: Don't request a host window surface for child
 windows.

Fixes: b9879d5adc1cd98a6ceb7d087c4533fdd487bedb
---
 dlls/win32u/window.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/dlls/win32u/window.c b/dlls/win32u/window.c
index 8e1ec0370ed..ce30b8b870e 100644
--- a/dlls/win32u/window.c
+++ b/dlls/win32u/window.c
@@ -1844,6 +1844,7 @@ static struct window_surface *create_window_surface( HWND hwnd, UINT swp_flags,
                                                      RECT *visible_rect, RECT *surface_rect )
 {
     BOOL shaped, needs_surface, create_opaque, is_layered;
+    HWND parent = NtUserGetAncestor( hwnd, GA_PARENT );
     struct window_surface *new_surface;
     RECT dummy;
     HRGN shape;
@@ -1853,6 +1854,7 @@ static struct window_surface *create_window_surface( HWND hwnd, UINT swp_flags,
 
     *visible_rect = *window_rect;
     if (!user_driver->pWindowPosChanging( hwnd, swp_flags, shaped, window_rect, client_rect, visible_rect )) needs_surface = FALSE;
+    else if (parent && parent != NtUserGetDesktopWindow()) needs_surface = FALSE;
     else if (swp_flags & SWP_HIDEWINDOW) needs_surface = FALSE;
     else if (swp_flags & SWP_SHOWWINDOW) needs_surface = TRUE;
     else needs_surface = !!(NtUserGetWindowLongW( hwnd, GWL_STYLE ) & WS_VISIBLE);
-- 
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