InfoHasAlpha example for C++ 5.0 and later

   ILEADRasterIO *pRasterIO=NULL;
   ILEADRasterProcess *pRasterProc = NULL;

   CoCreateInstance(CLSID_LEADRasterIO, NULL, CLSCTX_ALL,
                    IID_ILEADRasterIO, (void**)&pRasterIO);
   CoCreateInstance(CLSID_LEADRasterProcess, NULL, CLSCTX_ALL,
                    IID_ILEADRasterProcess, (void**)&pRasterProc);

   //load a 24-bit image
   pRasterIO->Load(m_LEADRasterView1.GetRaster(),
                   "c:\\temp\\1.jpg", 24, 1, 1);

m_LEADRasterView2.GetRaster().SetBitmap(m_LEADRasterView1.GetRaster().GetBitmap());
   //just make it 8-bit
   pRasterProc->ColorRes(m_LEADRasterView1.GetRaster(), 8,
                         (ColorResPaletteConstants)0,
                         (ColorResDitherConstants)0, 0);
   //now set an alpha channel

m_LEADRasterView1.GetRaster().SetBitmapAlpha(m_LEADRasterView2.GetRaster().GetBitmap());

   //save and free
   pRasterIO->Save(m_LEADRasterView1.GetRaster(),
                   "c:\\temp\\32.png", FILE_PNG, 32,
                   (QFactorConstants)0, 0);
   m_LEADRasterView1.GetRaster().SetBitmap(0);
   m_LEADRasterView2.GetRaster().SetBitmap(0);

   AfxMessageBox(TEXT("Pause"));

   //re-load
   pRasterIO->GetFileInfo(m_LEADRasterView1.GetRaster(),
                          "c:\\temp\\32.png", 0, 0);
   if(pRasterIO->GetInfoHasAlpha())
      pRasterIO->Load(m_LEADRasterView1.GetRaster(),
                      "c:\\temp\\32.png", 0, 1, 1);

m_LEADRasterView2.GetRaster().SetBitmap(m_LEADRasterView1.GetRaster().GetBitmapAlpha());
   pRasterIO->Release();
   pRasterProc->Release();