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CallWindowProc returns 0 if lpPrevWndFunc is NULL

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svn path=/trunk/; revision=28285
This commit is contained in:
Thomas Bluemel 2007-08-11 11:55:17 +00:00
parent e6980dd58b
commit 6dc469edbb
1 changed files with 8 additions and 3 deletions
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11
reactos/dll/win32/user32/windows/message.c
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@ -1235,9 +1235,11 @@ CallWindowProcA(WNDPROC lpPrevWndFunc,
{ {
WNDPROC_INFO wpInfo; WNDPROC_INFO wpInfo;
/* FIXME - can the first parameter be NULL? */
if (lpPrevWndFunc == NULL) if (lpPrevWndFunc == NULL)
lpPrevWndFunc = (WNDPROC)NtUserGetWindowLong(hWnd, GWLP_WNDPROC, TRUE); {
WARN("CallWindowProcA: lpPrevWndFunc == NULL!\n");
return 0;
}
if (!IsCallProcHandle(lpPrevWndFunc)) if (!IsCallProcHandle(lpPrevWndFunc))
return IntCallWindowProcA(TRUE, lpPrevWndFunc, hWnd, Msg, wParam, lParam); return IntCallWindowProcA(TRUE, lpPrevWndFunc, hWnd, Msg, wParam, lParam);
@ -1270,7 +1272,10 @@ CallWindowProcW(WNDPROC lpPrevWndFunc,
/* FIXME - can the first parameter be NULL? */ /* FIXME - can the first parameter be NULL? */
if (lpPrevWndFunc == NULL) if (lpPrevWndFunc == NULL)
lpPrevWndFunc = (WNDPROC)NtUserGetWindowLong(hWnd, GWLP_WNDPROC, FALSE); {
WARN("CallWindowProcA: lpPrevWndFunc == NULL!\n");
return 0;
}
if (!IsCallProcHandle(lpPrevWndFunc)) if (!IsCallProcHandle(lpPrevWndFunc))
return IntCallWindowProcW(FALSE, lpPrevWndFunc, hWnd, Msg, wParam, lParam); return IntCallWindowProcW(FALSE, lpPrevWndFunc, hWnd, Msg, wParam, lParam);