Function x11nas::xlib::XESetBeforeFlush

pub unsafe extern "C" fn XESetBeforeFlush(
    _3: *mut Display, 
    _2: c_int, 
    _1: Option<unsafe extern "C" fn(_: *mut Display, _: *mut XExtCodes, _: *const c_char, _: c_long)>
) -> Option<unsafe extern "C" fn(_: *mut Display, _: *mut XExtCodes, _: *const c_char, _: c_long)>