x11::xlib::XESetBeforeFlush

pub unsafe extern 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)>