public void TestNotificationCallBack() { int hr = 0; hr = tuner.RegisterNotificationCallBack(this, AMTunerEventType.Changed); Debug.Assert(hr == -2147467263, "IAMTVTuner.TestRegisterNotificationCallBack"); hr = tuner.UnRegisterNotificationCallBack(this); Debug.Assert(hr == -2147467263, "IAMTVTuner.UnRegisterNotificationCallBack"); }