Alexandre Julliard : user32: Always update the visible region for cross-process DCEs.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: e7f30014c307cf69f9c4e7c472ee38338e0b2638
URL:    http://source.winehq.org/git/wine.git/?a=commit;h=e7f30014c307cf69f9c4e7c472ee38338e0b2638

Author: Alexandre Julliard <julliard at winehq.org>
Date:   Mon Jul 24 17:04:35 2017 +0200

user32: Always update the visible region for cross-process DCEs.

Signed-off-by: Alexandre Julliard <julliard at winehq.org>

---

 dlls/user32/painting.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/dlls/user32/painting.c b/dlls/user32/painting.c
index 2130473..6cc9a7e 100644
--- a/dlls/user32/painting.c
+++ b/dlls/user32/painting.c
@@ -1111,6 +1111,9 @@ HDC WINAPI GetDCEx( HWND hwnd, HRGN hrgnClip, DWORD flags )
     dce->hwnd = hwnd;
     dce->flags = (dce->flags & ~user_flags) | (flags & user_flags);
 
+    /* cross-process invalidation is not supported yet, so always update the vis rgn */
+    if (!WIN_IsCurrentProcess( hwnd )) bUpdateVisRgn = TRUE;
+
     if (SetHookFlags( dce->hdc, DCHF_VALIDATEVISRGN )) bUpdateVisRgn = TRUE;  /* DC was dirty */
 
     if (bUpdateVisRgn) update_visible_region( dce );