IltmfPlay::get_SourceVideoType Example for C++

void GetPlayerSourceVideoType(IltmfPlay *pPlay) 
   BSTR     bstrSourceVideoType; 
   TCHAR   szSourceVideoType[MAX_PATH];  
   // try to get the source video type GUID string 
   HRESULT hr = pPlay->get_SourceVideoType(&bstrSourceVideoType); 
   // if we were successful display the guid 
   if (SUCCEEDED(hr)) 
      _stprintf(szSourceVideoType, _T("Source Video Type GUID is %ls"), bstrSourceVideoType); 
      MessageBox(NULL, szSourceVideoType, TEXT("Source Video Type"), MB_OK); 
      MessageBox(NULL, TEXT("Unable to get the source video type GUID"), TEXT("Source Video Type"), MB_OK); 
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