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Make NtUserSetFocus accept NULL window.

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svn path=/trunk/; revision=25410
This commit is contained in:
Timo Kreuzer 2007-01-10 04:23:33 +00:00
parent 78749a977a
commit d8160f0676
1 changed files with 34 additions and 17 deletions
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51
reactos/subsystems/win32/win32k/ntuser/focus.c
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@ -304,27 +304,37 @@ co_IntSetActiveWindow(PWINDOW_OBJECT Window OPTIONAL)
static
HWND FASTCALL
co_IntSetFocusWindow(PWINDOW_OBJECT Window)
co_IntSetFocusWindow(PWINDOW_OBJECT Window OPTIONAL)
{
HWND hWndPrev = 0;
PUSER_MESSAGE_QUEUE ThreadQueue;
ASSERT_REFS_CO(Window);
if (Window)
ASSERT_REFS_CO(Window);
ThreadQueue = (PUSER_MESSAGE_QUEUE)PsGetCurrentThreadWin32Thread()->MessageQueue;
ASSERT(ThreadQueue != 0);
hWndPrev = ThreadQueue->FocusWindow;
if (hWndPrev == Window->hSelf)
if (Window != 0)
{
return hWndPrev;
if (hWndPrev == Window->hSelf)
{
return hWndPrev;
}
ThreadQueue->FocusWindow = Window->hSelf;
co_IntSendKillFocusMessages(hWndPrev, Window->hSelf);
co_IntSendSetFocusMessages(hWndPrev, Window->hSelf);
}
else
{
ThreadQueue->FocusWindow = 0;
co_IntSendKillFocusMessages(hWndPrev, 0);
}
ThreadQueue->FocusWindow = Window->hSelf;
co_IntSendKillFocusMessages(hWndPrev, Window->hSelf);
co_IntSendSetFocusMessages(hWndPrev, Window->hSelf);
return hWndPrev;
}
@ -562,16 +572,23 @@ NtUserSetFocus(HWND hWnd)
DPRINT("Enter NtUserSetFocus(%x)\n", hWnd);
UserEnterExclusive();
if (!(Window = UserGetWindowObject(hWnd)))
if (hWnd)
{
RETURN(NULL);
}
if (!(Window = UserGetWindowObject(hWnd)))
{
RETURN(NULL);
}
UserRefObjectCo(Window, &Ref);
ret = co_UserSetFocus(Window);
UserDerefObjectCo(Window);
UserRefObjectCo(Window, &Ref);
ret = co_UserSetFocus(Window);
UserDerefObjectCo(Window);
RETURN(ret);
RETURN(ret);
}
else
{
RETURN( co_UserSetFocus(0));
}
CLEANUP:
DPRINT("Leave NtUserSetFocus, ret=%i\n",_ret_);