IgnoreFilters example for C++ 5.0 and later

This example shows how to ignore filters so that they are not loaded.

'Declare as a member of your Window Class
   ILEADRasterIO *pRasterIO=NULL;
   CoCreateInstance(CLSID_LEADRasterIO, NULL,
                    CLSCTX_ALL, IID_ILEADRasterIO,
                    (void**)&pRasterIO);

    // First, make sure PreLoaded Filters does not
    // contain CMP, and that 0 filters can be cached
    pRasterIO->PreLoadFilters(3, 0, "BMP,FAX,TIF");

    // now, ignore cmp filter (never load cmp files)
    pRasterIO->IgnoreFilters("CMP");