pub unsafe extern "C" fn gdk_pixbuf_copy_area(
    src_pixbuf: *const GdkPixbuf,
    src_x: c_int,
    src_y: c_int,
    width: c_int,
    height: c_int,
    dest_pixbuf: *mut GdkPixbuf,
    dest_x: c_int,
    dest_y: c_int
)