Function zbar::zbar::zbar_image_scanner_set_config

pub unsafe extern "C" fn zbar_image_scanner_set_config(
    scanner: *mut zbar_image_scanner_t, 
    symbology: zbar_symbol_type_e, 
    config: zbar_config_e, 
    value: c_int
) -> c_int

set config for indicated symbology (0 for all) to specified value * @returns 0 for success, non-0 for failure (config does not apply to specified * symbology, or value out of range