pub unsafe extern "C" fn gdk_pixbuf_scale(
    src: *const GdkPixbuf,
    dest: *mut GdkPixbuf,
    dest_x: c_int,
    dest_y: c_int,
    dest_width: c_int,
    dest_height: c_int,
    offset_x: c_double,
    offset_y: c_double,
    scale_x: c_double,
    scale_y: c_double,
    interp_type: GdkInterpType
)