GaussianFilter example for Visual C++ 5 and later

   ILEADRasterProcess *pRasterProc=NULL;
   CoCreateInstance(CLSID_LEADRasterProcess, NULL, CLSCTX_ALL, IID_ILEADRasterProcess, (void**)&pRasterProc);
   pRasterProc->GaussianFilter (m_RasterView.GetRaster (), 20);
   pRasterProc->Release();