pub unsafe extern "C" fn XESetErrorString(
_3: *mut _XDisplay,
_2: i32,
_1: Option<unsafe extern "C" fn(*mut _XDisplay, i32, *mut XExtCodes, *mut i8, i32) -> *mut i8>
) -> Option<unsafe extern "C" fn(*mut _XDisplay, i32, *mut XExtCodes, *mut i8, i32) -> *mut i8>