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Check for passed invalid window handle in DefMDIChildProc*.

This commit is contained in:
Marcus Meissner 1999-12-12 19:39:37 +00:00 committed by Alexandre Julliard
parent 7377a16297
commit e6c6390c21
1 changed files with 10 additions and 3 deletions
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13
windows/mdi.c
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@ -1483,8 +1483,11 @@ LRESULT WINAPI DefMDIChildProc16( HWND16 hwnd, UINT16 message,
WND *clientWnd,*tmpWnd = 0;
LRESULT retvalue;
clientWnd = WIN_FindWndPtr(GetParent16(hwnd));
tmpWnd = WIN_FindWndPtr(hwnd);
if (!tmpWnd) return 0;
clientWnd = WIN_FindWndPtr(tmpWnd->parent->hwndSelf);
ci = (MDICLIENTINFO *) clientWnd->wExtra;
WIN_ReleaseWndPtr(tmpWnd);
switch (message)
{
@ -1666,6 +1669,7 @@ LRESULT WINAPI DefMDIChildProcA( HWND hwnd, UINT message,
LRESULT retvalue;
tmpWnd = WIN_FindWndPtr(hwnd);
if (!tmpWnd) return 0;
clientWnd = WIN_FindWndPtr(tmpWnd->parent->hwndSelf);
ci = (MDICLIENTINFO *) clientWnd->wExtra;
WIN_ReleaseWndPtr(tmpWnd);
@ -1731,11 +1735,14 @@ LRESULT WINAPI DefMDIChildProcW( HWND hwnd, UINT message,
WPARAM wParam, LPARAM lParam )
{
MDICLIENTINFO *ci;
WND *clientWnd;
WND *clientWnd,*tmpWnd;
LRESULT retvalue;
clientWnd = WIN_FindWndPtr(GetParent16(hwnd));
tmpWnd = WIN_FindWndPtr(hwnd);
if (!tmpWnd) return 0;
clientWnd = WIN_FindWndPtr(tmpWnd->parent->hwndSelf);
ci = (MDICLIENTINFO *) clientWnd->wExtra;
WIN_ReleaseWndPtr(tmpWnd);
switch (message)
{