Function cairo_sys::cairo_pattern_get_color_stop_rgba

pub unsafe extern "C" fn cairo_pattern_get_color_stop_rgba(
    pattern: *mut cairo_pattern_t, 
    index: c_int, 
    offset: *mut c_double, 
    red: *mut c_double, 
    green: *mut c_double, 
    blue: *mut c_double, 
    alpha: *mut c_double
) -> Status