[gschneider] 42321: - Handle WM_SETREDRAW messages differently in the DefWndProc, ported from current Wine - Fixes mIRC riched component regression, no more riched20 reverts for releases needed See issue #4098 for more details.

Author: gschneider
Date: Sat Aug  1 13:26:40 2009
New Revision: 42321

URL: http://svn.reactos.org/svn/reactos?rev=42321&view=rev
Log:
- Handle WM_SETREDRAW messages differently in the DefWndProc, ported from current Wine
- Fixes mIRC riched component regression, no more riched20 reverts for releases needed
See issue #4098 for more details.

Modified:
    trunk/reactos/dll/win32/user32/windows/defwnd.c

Modified: trunk/reactos/dll/win32/user32/windows/defwnd.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/dll/win32/user32/windows/d…
==============================================================================
--- trunk/reactos/dll/win32/user32/windows/defwnd.c [iso-8859-1] (original)
+++ trunk/reactos/dll/win32/user32/windows/defwnd.c [iso-8859-1] Sat Aug  1 13:26:40 2009
@@ -1245,7 +1245,14 @@
 
         case WM_SETREDRAW:
         {
-            DefWndSetRedraw(hWnd, wParam);
+            LONG_PTR Style = GetWindowLongPtrW(hWnd, GWL_STYLE);
+            if (wParam) SetWindowLongPtr(hWnd, GWL_STYLE, Style | WS_VISIBLE);
+            else
+            {
+                RedrawWindow(hWnd, NULL, 0, RDW_ALLCHILDREN | RDW_VALIDATE);
+                Style &= ~WS_VISIBLE;
+                SetWindowLongPtr(hWnd, GWL_STYLE, Style);
+            }
             return (0);
         }