+/**
+ * GtkTreeModelForeachFunc:
+ * @model: the #GtkTreeModel being iterated
+ * @path: the current #GtkTreePath
+ * @iter: the current #GtkTreeIter
+ * @data: The user data passed to gtk_tree_model_foreach()
+ *
+ * Type of the callback passed to gtk_tree_model_foreach() to
+ * iterate over the rows in a tree model.
+ *
+ * Return value: %TRUE to stop iterating, %FALSE to continue
+ *
+ */
+typedef gboolean (* GtkTreeModelForeachFunc) (GtkTreeModel *model, GtkTreePath *path, GtkTreeIter *iter, gpointer data);