-#define GTK_ARROW(obj) (GTK_CHECK_CAST ((obj), GTK_TYPE_ARROW, GtkArrow))
-#define GTK_ARROW_CLASS(klass) (GTK_CHECK_CLASS_CAST ((klass), GTK_TYPE_ARROW, GtkArrowClass))
-#define GTK_IS_ARROW(obj) (GTK_CHECK_TYPE ((obj), GTK_TYPE_ARROW))
-#define GTK_IS_ARROW_CLASS(klass) (GTK_CHECK_CLASS_TYPE ((klass), GTK_TYPE_ARROW))
-
+#define GTK_ARROW(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GTK_TYPE_ARROW, GtkArrow))
+#define GTK_ARROW_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GTK_TYPE_ARROW, GtkArrowClass))
+#define GTK_IS_ARROW(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GTK_TYPE_ARROW))
+#define GTK_IS_ARROW_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GTK_TYPE_ARROW))
+#define GTK_ARROW_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GTK_TYPE_ARROW, GtkArrowClass))