PreferredLoadFormat Example for C++ Builder

   LEADRasterIO* pRasterIO= NULL;

   CoCreateInstance(CLSID_LEADRasterIO, NULL, CLSCTX_ALL, IID_ILEADRasterIO, (void**)&pRasterIO);
   pRasterIO->PreferredLoadFormat = FILE_CMP;
   //....... load a file

   pRasterIO-> Release( );