fltk_sys::draw

Function Fl_loop2

Source 
pub unsafe extern "C" fn Fl_loop2(
    x: c_int,
    y: c_int,
    x1: c_int,
    y1: c_int,
    x2: c_int,
    y2: c_int,
    x3: c_int,
    y3: c_int,
)