-#define GTK_BIN(obj) (GTK_CHECK_CAST ((obj), GTK_TYPE_BIN, GtkBin))
-#define GTK_BIN_CLASS(klass) (GTK_CHECK_CLASS_CAST ((klass), GTK_TYPE_BIN, GtkBinClass))
-#define GTK_IS_BIN(obj) (GTK_CHECK_TYPE ((obj), GTK_TYPE_BIN))
-#define GTK_IS_BIN_CLASS(klass) (GTK_CHECK_CLASS_TYPE ((klass), GTK_TYPE_BIN))
+#define GTK_BIN(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GTK_TYPE_BIN, GtkBin))
+#define GTK_BIN_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GTK_TYPE_BIN, GtkBinClass))
+#define GTK_IS_BIN(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GTK_TYPE_BIN))
+#define GTK_IS_BIN_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GTK_TYPE_BIN))
+#define GTK_BIN_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GTK_TYPE_BIN, GtkBinClass))