pub unsafe extern "C" fn gdk_pixbuf_composite_color_simple(
    src: *const GdkPixbuf,
    dest_width: c_int,
    dest_height: c_int,
    interp_type: GdkInterpType,
    overall_alpha: c_int,
    check_size: c_int,
    color1: u32,
    color2: u32
) -> *mut GdkPixbuf