From ee44d885a4629a29d3fedf567df25332e2614cea Mon Sep 17 00:00:00 2001
From: Alexandre Julliard <julliard@winehq.org>
Date: Thu, 3 May 2001 18:35:33 +0000
Subject: [PATCH] Make sure we recompute the visible region in DC hook.

---
 windows/dce.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/windows/dce.c b/windows/dce.c
index 4c697d710c..400231ad08 100644
--- a/windows/dce.c
+++ b/windows/dce.c
@@ -671,7 +671,12 @@ BOOL16 WINAPI DCHook16( HDC16 hDC, WORD code, DWORD data, LPARAM lParam )
 	    * means that we have to recompute the visible region.
 	    */
            if( dce->DCXflags & DCX_DCEBUSY )
+           {
+               /* Dirty bit has been cleared by caller, set it again so that
+                * pGetDC recomputes the visible region. */
+               SetHookFlags16( dce->hDC, DCHF_INVALIDATEVISRGN );
                USER_Driver.pGetDC( dce->hwndCurrent, dce->hDC, dce->hClipRgn, dce->DCXflags );
+           }
            else /* non-fatal but shouldn't happen */
 	     WARN("DC is not in use!\n");
 	   break;