UINT Win32ThreadProcedure(PVOID pvParam) {
         CoInitializeEx(0, COINIT_APARTMENTTHREADED);
        Win32Thread *thread = static_cast (pvParam);
         for (int i=0;i<150;i  ) {
              /////////// 這一行沒加就正常也, 加了後有時後會 deadlock
              dx_tuner->SetChannel(i 1); <<< 呼叫 DirectShow IAMTuner
              if (IsKill()) break;
         }
        thread->deadEvent.SetEvent();
        CoUninitialize();
        return 0;
}    BOOL Win32Thread::IsKill() {
  BOOL b = WaitForSingleObject(killEvent, 0) == WAIT_OBJECT_0;
  return b;
}    BOOL Win32Thread::IsDead() {
  BOOL b = WaitForSingleObject(deadEvent, 0) == WAIT_OBJECT_0;
  return b;
}    BOOL Win32Thread::Start() {
  killEvent.ResetEvent();
  deadEvent.ResetEvent();
  winThread = ::AfxBeginThread(
    Win32ThreadProcedure, (LPVOID) this, 
    THREAD_PRIORITY_NORMAL, 0, 0, NULL
  );
  if (winThread) return TRUE;
  else return FALSE;
}    BOOL Win32Thread::Stop() {
  if (!IsDead() && winThread != NULL) {
    killEvent.SetEvent(); <<< 設定要求 Thread 停止
    while (!IsDead()) { <<< 等待 Thread  停止 ( deadlock )
      Sleep(500);
      //WaitForSingleObject(deadEvent, INFINITE);
    }
    winThread = NULL;
    return TRUE;
  }
  return FALSE;
}
Win32Thread::~Win32Thread() { }