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)>