Contrast example for C++ Builder

This example increases the contrast and repaints the image.

   LEADRasterProcess* pRasterProc= NULL;

     CoCreateInstance(CLSID_LEADRasterProcess, NULL, CLSCTX_ALL, IID_ILEADRasterProcess, (void**)&pRasterProc);
   pRasterProc->Contrast (LEADRasterView1->Raster, 50);
   LEADRasterView1->ForceRepaint ();
   pRasterProc-> Release ( );