fltk_sys::draw

Function Fl_clip_box

Source 
pub unsafe extern "C" fn Fl_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