Protect BeginPaint and EndPaint from lps being NULL.

befff556 · Dmitry Timoshkov · Alexandre Julliard · 0485fc19 · befff556
Commit befff556 authored Apr 30, 2003 by Dmitry Timoshkov Committed by Alexandre Julliard Apr 30, 2003
Hide whitespace changes
Inline Side-by-side

Showing with 4 additions and 0 deletions

painting.c dlls/user/painting.c +4 -0

No files found.
--- a/dlls/user/painting.c
+++ b/dlls/user/painting.c
@@ -159,6 +159,8 @@ HDC WINAPI BeginPaint( HWND hwnd, PAINTSTRUCT *lps )
    HWND full_handle;
    WND *wndPtr;

+    if (!lps) return 0;
+
    if (!(full_handle = WIN_IsCurrentThread( hwnd )))
    {
        if (IsWindow(hwnd))
@@ -239,6 +241,8 @@ HDC WINAPI BeginPaint( HWND hwnd, PAINTSTRUCT *lps )
 */
 BOOL WINAPI EndPaint( HWND hwnd, const PAINTSTRUCT *lps )
 {
+    if (!lps) return FALSE;
+
    ReleaseDC( hwnd, lps->hdc );
    ShowCaret( hwnd );
    return TRUE;