ImageEffects Example for C++ 5.0 and later

ILEADRasterTwain_U * pRasterTwain;

HRESULT hr = ::CoCreateInstance(CLSID_LEADRasterTwain_U, NULL, CLSCTX_ALL, IID_ILEADRasterTwain_U, (void **)&pRasterTwain);
if (FAILED(hr) || !pRasterTwain)
{
  ::MessageBox (NULL, _TEXT("Failed to create a Raster Twain Object"), _TEXT("Error"), MB_OK);
  return;
}

pRasterTwain->InitSession((long)GetSafeHwnd()); 
pRasterTwain->SelectSource();
pRasterTwain->EnableMethodErrors = FALSE;
pRasterTwain->GetProperties();
pRasterTwain->ImageEffects->PixelFlavor = L_TWPF_VANILLA;
pRasterTwain->ImageEffects->ColorScheme = L_TWPT_BW;
pRasterTwain->ImageEffects->HighLight = 50;
pRasterTwain->ImageEffects->Shadow = 50;
pRasterTwain->ImageEffects->Brightness = 500;
pRasterTwain->ImageEffects->Contrast = 100;

char buf[256];
memset(buf, 0, strlen(buf));
wsprintf(buf, TEXT("Current used Halftone = %d"), pRasterTwain->ImageEffects->HalfTone);
::MessageBox(NULL, buf, "Halftone", MB_OK);

pRasterTwain->SetProperties();
pRasterTwain->EndSession();