GetLayerMaskBitmap example for C++ 5.0 and later

   ILEADRasterIO *pRasterIO=NULL; 
   CoCreateInstance(CLSID_LEADRasterIO, NULL, CLSCTX_ALL, IID_ILEADRasterIO, (void**)&pRasterIO); 

   ILEADRaster *pRaster2=NULL; 
   CoCreateInstance(CLSID_LEADRaster, NULL, CLSCTX_ALL, IID_ILEADRaster, (void**)&pRaster2); 

   pRasterIO->GetLayerMaskBitmap(m_RasterView1.GetRaster (), pRaster2, 1); 
   if(pRaster2->Bitmap == 0) 
      AfxMessageBox(TEXT("No Layer Mask Bitmap"));

   pRaster2->Release();
   pRasterIO->Release();