PreLoadFilters Example for C++ 4.0 and later

This example shows how to preload filters.

// preload the BMP, PCX, FAX, and TIFF filters,
    // and allow 1 filter to be cached, while always
    // keeping 3 loaded.
    m_Lead1.PreLoadFilters(3, 1, "BMP,PCX,FAX,TIF");