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Protect CallWindowProcA/W from NULL pointers.

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This commit is contained in:
Dmitry Timoshkov 2003-08-05 19:17:19 +00:00 committed by Alexandre Julliard
parent f910024057
commit d9e798074e
1 changed files with 10 additions and 4 deletions
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14
windows/winproc.c
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@ -2867,9 +2867,12 @@ LRESULT WINAPI CallWindowProcA(
WPARAM wParam, /* [in] message dependent parameter */
LPARAM lParam /* [in] message dependent parameter */
) {
WINDOWPROC *proc = WINPROC_GetPtr( func );
WINDOWPROC *proc;
if (!proc) return WINPROC_CallWndProc( func, hwnd, msg, wParam, lParam );
if (!func) return 0;
if (!(proc = WINPROC_GetPtr( func )))
return WINPROC_CallWndProc( func, hwnd, msg, wParam, lParam );
#if testing
func = WINPROC_GetProc( (WNDPROC)proc, WIN_PROC_32A );
@ -2903,9 +2906,12 @@ LRESULT WINAPI CallWindowProcA(
LRESULT WINAPI CallWindowProcW( WNDPROC func, HWND hwnd, UINT msg,
WPARAM wParam, LPARAM lParam )
{
WINDOWPROC *proc = WINPROC_GetPtr( func );
WINDOWPROC *proc;
if (!proc) return WINPROC_CallWndProc( func, hwnd, msg, wParam, lParam );
if (!func) return 0;
if (!(proc = WINPROC_GetPtr( (WNDPROC)func )))
return WINPROC_CallWndProc( func, hwnd, msg, wParam, lParam );
#if testing
func = WINPROC_GetProc( (WNDPROC)proc, WIN_PROC_32W );