윈도우 최상위 윈도우로 끌어 올리기

if(::GetForegroundWindow() != GetSafeHwnd()) {
 HWND hActiveWnd = ::GetForegroundWindow();
 if(hActiveWnd != NULL) {
  DWORD ThreadID = GetWindowThreadProcessId(hActiveWnd, NULL);
  DWORD CurrentThreadID = GetCurrentThreadId();
  if(CurrentThreadID != ThreadID) {
   if(AttachThreadInput(CurrentThreadID, ThreadID, TRUE)) {
    ::BringWindowToTop(GetSafeHwnd());
    AttachThreadInput(CurrentThreadID, ThreadID, FALSE);
   }
  }
 }
}