InfoHasAlpha example for C++ Builder

   LEADRasterIO* pRasterIO= NULL;
   LEADRasterProcess* pRasterProc= NULL;

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

   pRasterIO->Load (LEADRasterView1->Raster, AnsiToOLESTR("v:\\images\\1.jpg"), 24, 1, 1); //load a 24-bit image
   LEADRasterView2->Raster->Bitmap = LEADRasterView1->Raster->Bitmap;
   pRasterProc->ColorRes (LEADRasterView1->Raster,
                  8,
                          (ColorResPaletteConstants)0,
                          (ColorResDitherConstants)0,
                          0); //just make it 8-bit
   //now set an alpha channel
   LEADRasterView1->Raster->BitmapAlpha = LEADRasterView2->Raster->Bitmap;

   //save and free
   pRasterIO->Save (LEADRasterView1->Raster, AnsiToOLESTR("c:\\temp\\32.png"), FILE_PNG, 32, (QFactorConstants)0, 0);
   LEADRasterView1->Raster->Bitmap = 0;
   LEADRasterView2->Raster->Bitmap = 0;

   ShowMessage("Pause");

   //re-load
   pRasterIO->GetFileInfo (LEADRasterView1->Raster, AnsiToOLESTR("c:\\temp\\32.png"), 0, 0);
   if (pRasterIO->InfoHasAlpha)
       pRasterIO->Load (LEADRasterView1->Raster, AnsiToOLESTR("c:\\temp\\32.png"), 0, 1, 1);

   LEADRasterView2->Raster->Bitmap = LEADRasterView1->Raster->BitmapAlpha;

   pRasterProc-> Release( );
   pRasterIO-> Release( );