Function gdk4_x11_sys::xlib::XCheckIfEvent

pub unsafe extern "C" fn XCheckIfEvent(
    _4: *mut _XDisplay, 
    _3: *mut XEvent, 
    _2: Option<unsafe extern "C" fn(*mut _XDisplay, *mut XEvent, *mut i8) -> i32>, 
    _1: *mut i8
) -> i32