IltmmTVTuner::SetChannel Example for C

IltmmTVTuner* pTuner; 
HRESULT hr = IltmmCapture__get_TVTuner(m_capture, &pTuner); 
if(SUCCEEDED(hr) && pTuner != NULL) 
{
   long channel, lVideoFrequency, lAudioFrequency; 

   hr = IltmmTVTuner__get_Channel(pTuner, &channel); 
   if(SUCCEEDED(hr)) 
{
   IltmmTVTuner_SetChannel(pTuner, channel, ltmmTUNER_SUBCHAN_DEFAULT,ltmmTUNER_SUBCHAN_DEFAULT); 
   IltmmTVTuner__get_VideoFrequency(pTuner, &lVideoFrequency); 
   IltmmTVTuner__get_AudioFrequency(pTuner, &lAudioFrequency); 
}
IltmmTVTuner_Release(pTuner);
}

L_MULTIMEDIATEX_API void IltmmTVTuner_SetChannel_Example (IltmmCapture *pCapture)
{
   IltmmTVTuner* pTuner; 

   HRESULT hr = IltmmCapture_get_TVTuner(pCapture, &pTuner); 

   if(SUCCEEDED(hr) && pTuner != NULL) 
   {
      long channel, lVideoFrequency, lAudioFrequency; 

      hr = IltmmTVTuner_get_Channel(pTuner, &channel); 

      if(SUCCEEDED(hr)) 
      {
         IltmmTVTuner_SetChannel(pTuner, channel, ltmmTUNER_SUBCHAN_DEFAULT,ltmmTUNER_SUBCHAN_DEFAULT); 
         IltmmTVTuner_get_VideoFrequency(pTuner, &lVideoFrequency); 
         IltmmTVTuner_get_AudioFrequency(pTuner, &lAudioFrequency); 
      }

      IltmmTVTuner_Release(pTuner);
   }
}