IltmmTVTuner::get_SignalPresent Example for C++

IltmmTVTuner* pTuner; 
HRESULT hr = m_capture->get_TVTuner (&pTuner); 
if(SUCCEEDED(hr) && pTuner != NULL) 
{
      long lSignalPresent; 
      pTuner->get_SignalPresent (&lSignalPresent); 
      pTuner->Release();
}