Function fltk_sys::draw::cfl_rectf_with_rgb

pub unsafe extern "C" fn cfl_rectf_with_rgb(
    x: c_int, 
    y: c_int, 
    w: c_int, 
    h: c_int, 
    r: c_uchar, 
    g: c_uchar, 
    b: c_uchar
)