#define GTK_TREE_MODEL_FILTER_CLASS(vtable) (G_TYPE_CHECK_CLASS_CAST ((vtable), GTK_TYPE_TREE_MODEL_FILTER, GtkTreeModelFilterClass))
#define GTK_IS_TREE_MODEL_FILTER(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GTK_TYPE_TREE_MODEL_FILTER))
#define GTK_IS_TREE_MODEL_FILTER_CLASS(vtable) (G_TYPE_CHECK_CLASS_TYPE ((vtable), GTK_TYPE_TREE_MODEL_FILTER))
-#define GTK_TREE_MODEL_FILTER_GET_CLASS(inst) (G_TYPE_INSTANCE_GET_CLASS ((obj), GTK_TYPE_TREE_MODEL_FILTER, GtkTreeModelFilterClass))
+#define GTK_TREE_MODEL_FILTER_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GTK_TYPE_TREE_MODEL_FILTER, GtkTreeModelFilterClass))
typedef gboolean (* GtkTreeModelFilterVisibleFunc) (GtkTreeModel *model,
GtkTreeIter *iter,