IltmfConvert::SaveStillBitmap Example for C++

#define MAKE_MEDIA_PATH(pFileName) (TEXT("C:\\LEADTOOLS\\Media\\")TEXT(pFileName))
// This function would be called before start the conversion process
void BeforeConversion(IltmfConvert *pConvert)
{
   long lWnd = 0; 
   ltmfSizeMode lSizeMode; 
   long lLimit, lVideoH, lVideoW, lWndLeft, lWndTop, lWndW, lWndH; 
   VARIANT_BOOL vb; 
   BSTR bstrLog; 
   pConvert->get_VideoWindowHandle(&lWnd); 
   if (lWnd) 
   {
      // get video dimensions
      pConvert->get_VideoWidth(&lVideoW); 
      pConvert->get_VideoHeight(&lVideoH);
      // get window size and pos
      pConvert->get_VideoWindowWidth(&lWndW); 
      pConvert->get_VideoWindowHeight(&lWndH);  
      pConvert->get_VideoWindowLeft(&lWndLeft); 
      pConvert->get_VideoWindowTop(&lWndTop); 
      
      // set the desired video window size mode
      pConvert->get_VideoWindowSizeMode(&lSizeMode); 
      if (lSizeMode != ltmfFit && lVideoW > lWndW && lVideoH > lWndH) 
         pConvert->put_VideoWindowSizeMode(ltmfFit); 
      else if (lVideoW < lWndW && lVideoH < lWndH) 
         pConvert->put_VideoWindowSizeMode(ltmfStretch); 
   }
   // get full screen mode
   pConvert->get_FullScreenMode(&vb); 
   if (vb == VARIANT_TRUE) 
   {
      // Just to show how to use put_FullScreenMode
      pConvert->ToggleFullScreenMode();
      // Use put_FullScreenMode(VARIANT_FALSE) to turn off the full screen mode
      pConvert->put_FullScreenMode(VARIANT_FALSE); 
   }
} 
// This function would be called to save a snapshot from the running conversion to a file
void TakeSnapShots(IltmfConvert *pConvert)
{
   static int i = 0; 
   WCHAR szFileName[100]; 
   wsprintf(szFileName, MAKE_MEDIA_PATH("SnapShot%d.cmp"), i++);
   USES_CONVERSION; 
   BSTR bstFileName = SysAllocString(szFileName); 
   pConvert->SaveStillBitmap(bstFileName, ltmfConvert_StillFormat_CMP, 2, 0, -1); 
}