gdk_pixbuf_new_subpixbuf (GdkPixbuf *src_pixbuf,
                          int        src_x,
                          int        src_y,
                          int        width,
                          int        height)
{
        guchar *pixels;
        GdkPixbuf *sub;

        g_return_val_if_fail (GDK_IS_PIXBUF (src_pixbuf), NULL);
        g_return_val_if_fail (src_x >= 0 && src_x + width <= src_pixbuf->width, NULL);
        g_return_val_if_fail (src_y >= 0 && src_y + height <= src_pixbuf->height, NULL);

        pixels = (gdk_pixbuf_get_pixels (src_pixbuf)
                  + src_y * src_pixbuf->rowstride
                  + src_x * src_pixbuf->n_channels);

        sub = gdk_pixbuf_new_from_data (pixels,
                                        src_pixbuf->colorspace,
                                        src_pixbuf->has_alpha,
                                        src_pixbuf->bits_per_sample,
                                        width, height,
                                        src_pixbuf->rowstride,
                                        NULL, NULL);

        /* Keep a reference to src_pixbuf */
        g_object_ref (src_pixbuf);
  
        g_object_set_qdata_full (G_OBJECT (sub),
                                 g_quark_from_static_string ("gdk-pixbuf-subpixbuf-src"),
                                 src_pixbuf,
                                 (GDestroyNotify) g_object_unref);

        return sub;
}
gdk_pixbuf_new_subpixbuf (GdkPixbuf *src_pixbuf,
                          int        src_x,
                          int        src_y,
                          int        width,
                          int        height)
{
        guchar *pixels;
        GdkPixbuf *sub;

        g_return_val_if_fail (GDK_IS_PIXBUF (src_pixbuf), NULL);
        g_return_val_if_fail (src_x >= 0 && src_x + width <= src_pixbuf->width, NULL);
        g_return_val_if_fail (src_y >= 0 && src_y + height <= src_pixbuf->height, NULL);

        pixels = (gdk_pixbuf_get_pixels (src_pixbuf)
                  + src_y * src_pixbuf->rowstride
                  + src_x * src_pixbuf->n_channels);

        sub = gdk_pixbuf_new_from_data (pixels,
                                        src_pixbuf->colorspace,
                                        src_pixbuf->has_alpha,
                                        src_pixbuf->bits_per_sample,
                                        width, height,
                                        src_pixbuf->rowstride,
                                        NULL, NULL);

         
        g_object_ref (src_pixbuf);
  
        g_object_set_qdata_full (G_OBJECT (sub),
                                 g_quark_from_static_string ("gdk-pixbuf-subpixbuf-src"),
                                 src_pixbuf,
                                 (GDestroyNotify) g_object_unref);

        return sub;
}