From 7163d097d0551bd6793e1e5b8e2dec07f8ecc1f7 Mon Sep 17 00:00:00 2001
From: Gregor Schneider <grschneider@gmail.com>
Date: Sat, 1 Aug 2009 11:26:40 +0000
Subject: [PATCH] - 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.

svn path=/trunk/; revision=42321
---
 reactos/dll/win32/user32/windows/defwnd.c | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/reactos/dll/win32/user32/windows/defwnd.c b/reactos/dll/win32/user32/windows/defwnd.c
index e4b7c8a3d32..e09867135e9 100644
--- a/reactos/dll/win32/user32/windows/defwnd.c
+++ b/reactos/dll/win32/user32/windows/defwnd.c
@@ -1245,7 +1245,14 @@ User32DefWindowProc(HWND hWnd,
 
         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);
         }