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Protect BeginPaint and EndPaint from lps being NULL.

This commit is contained in:
Dmitry Timoshkov 2003-04-30 00:50:43 +00:00 committed by Alexandre Julliard
parent 0485fc19b6
commit befff55609
1 changed files with 4 additions and 0 deletions
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4
dlls/user/painting.c
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@ -159,6 +159,8 @@ HDC WINAPI BeginPaint( HWND hwnd, PAINTSTRUCT *lps )
HWND full_handle; HWND full_handle;
WND *wndPtr; WND *wndPtr;
if (!lps) return 0;
if (!(full_handle = WIN_IsCurrentThread( hwnd ))) if (!(full_handle = WIN_IsCurrentThread( hwnd )))
{ {
if (IsWindow(hwnd)) if (IsWindow(hwnd))
@ -239,6 +241,8 @@ HDC WINAPI BeginPaint( HWND hwnd, PAINTSTRUCT *lps )
*/ */
BOOL WINAPI EndPaint( HWND hwnd, const PAINTSTRUCT *lps ) BOOL WINAPI EndPaint( HWND hwnd, const PAINTSTRUCT *lps )
{ {
if (!lps) return FALSE;
ReleaseDC( hwnd, lps->hdc ); ReleaseDC( hwnd, lps->hdc );
ShowCaret( hwnd ); ShowCaret( hwnd );
return TRUE; return TRUE;