-#define GTK_DRAWING_AREA(obj) (GTK_CHECK_CAST ((obj), GTK_TYPE_DRAWING_AREA, GtkDrawingArea))
-#define GTK_DRAWING_AREA_CLASS(klass) (GTK_CHECK_CLASS_CAST ((klass), GTK_TYPE_DRAWING_AREA, GtkDrawingAreaClass))
-#define GTK_IS_DRAWING_AREA(obj) (GTK_CHECK_TYPE ((obj), GTK_TYPE_DRAWING_AREA))
-#define GTK_IS_DRAWING_AREA_CLASS(klass) (GTK_CHECK_CLASS_TYPE ((klass), GTK_TYPE_DRAWING_AREA))
-#define GTK_DRAWING_AREA_GET_CLASS(obj) (GTK_CHECK_GET_CLASS ((obj), GTK_TYPE_DRAWING_AREA, GtkDrawingAreaClass))
+#define GTK_DRAWING_AREA(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GTK_TYPE_DRAWING_AREA, GtkDrawingArea))
+#define GTK_DRAWING_AREA_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GTK_TYPE_DRAWING_AREA, GtkDrawingAreaClass))
+#define GTK_IS_DRAWING_AREA(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GTK_TYPE_DRAWING_AREA))
+#define GTK_IS_DRAWING_AREA_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GTK_TYPE_DRAWING_AREA))
+#define GTK_DRAWING_AREA_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GTK_TYPE_DRAWING_AREA, GtkDrawingAreaClass))