+ *model = gtk_tree_model_filter_get_model (parent_model);
+
+ gtk_tree_model_filter_convert_iter_to_child_iter (parent_model,
+ iter,
+ &parent_iter);
+ }
+ else if (GTK_IS_TREE_MODEL_SORT (*model))
+ {
+ GtkTreeModelSort *parent_model = GTK_TREE_MODEL_SORT (*model);