IltmmConvert::get_SourceVideoType Example for C

LPTSTR OLE2T(LPCOLESTR lpw)
{
   static TCHAR lpt[512];

   if(!lpw)
      return NULL;

   lpt[0] = _T('\0');

   WideCharToMultiByte(CP_ACP, 0, lpw, -1, lpt, 512, NULL, NULL);
   return lpt;
}

void IltmmConvert_get_SourceVideoType_Example (IltmmConvert* pConvert)
{
   char szVideoType[256];
   BSTR bstr;

   IltmmConvert_get_SourceVideoType(pConvert, &bstr);

   strcpy(szVideoType, "Source video type GUID is ");

   strcat(szVideoType, OLE2T(bstr));

   MessageBox(NULL, szVideoType, NULL, MB_OK);

   SysFreeString(bstr);
}