Function fltk_sys::draw::cfl_clip_box

pub unsafe extern "C" fn cfl_clip_box(
    x: c_int, 
    y: c_int, 
    w: c_int, 
    h: c_int, 
    X: *mut c_int, 
    Y: *mut c_int, 
    W: *mut c_int, 
    H: *mut c_int
) -> c_int