I'm working on a messenging tool. The messaging window is part of a whole application. I need the window to go to the front when there are some messages coming. I'am using this code :
if( m_hwnd == NULL || !::IsWindow(m_hwnd) )
return E_UNEXPECTED;
if(::IsIconic(m_hwnd))
{
::ShowWindowAsync( m_hwnd, SW_RESTORE );
}
::SetWindowPos(m_hwnd, HWND_TOP, 0, 0, 0, 0, SWP_ASYNCWINDOWPOS | SWP_NOMOVE | SWP_NOSIZE | SWP_SHOWWINDOW);
::SetForegroundWindow(m_hwnd);
if( pvbProcessed != NULL )
*pvbProcessed = VARIANT_TRUE;
return S_OK;
I even tried to do a TOPMOST but still in some cases it does not work. I also Tried a ::BringToFront().
Anyone can help or give an explanation on why it doen not work ? Is it a known microsoft limitation.
The system restricts which processes can set the foreground window. A process can set the foreground window only if one of the following conditions is true:
- The process is the foreground process.
- The process was started by the foreground process.
- The process received the last input event.
- There is no foreground process.
- The foreground process is being debugged.
- The foreground is not locked (see LockSetForegroundWindow).
- The foreground lock time-out has expired (see SPI_GETFOREGROUNDLOCKTIMEOUT in SystemParametersInfo).
- No menus are active.
See the SetForegroundWindow()
docs for more details.