-#define GTK_IM_MULTICONTEXT(obj) (GTK_CHECK_CAST ((obj), GTK_TYPE_IM_MULTICONTEXT, GtkIMMulticontext))
-#define GTK_IM_MULTICONTEXT_CLASS(klass) (GTK_CHECK_CLASS_CAST ((klass), GTK_TYPE_IM_MULTICONTEXT, GtkIMMulticontextClass))
-#define GTK_IS_IM_MULTICONTEXT(obj) (GTK_CHECK_TYPE ((obj), GTK_TYPE_IM_MULTICONTEXT))
-#define GTK_IS_IM_MULTICONTEXT_CLASS(klass) (GTK_CHECK_CLASS_TYPE ((klass), GTK_TYPE_IM_MULTICONTEXT))
-#define GTK_IM_MULTICONTEXT_GET_CLASS(obj) (GTK_CHECK_GET_CLASS ((obj), GTK_TYPE_IM_MULTICONTEXT, GtkIMMulticontextClass))
+#define GTK_IM_MULTICONTEXT(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GTK_TYPE_IM_MULTICONTEXT, GtkIMMulticontext))
+#define GTK_IM_MULTICONTEXT_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GTK_TYPE_IM_MULTICONTEXT, GtkIMMulticontextClass))
+#define GTK_IS_IM_MULTICONTEXT(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GTK_TYPE_IM_MULTICONTEXT))
+#define GTK_IS_IM_MULTICONTEXT_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GTK_TYPE_IM_MULTICONTEXT))
+#define GTK_IM_MULTICONTEXT_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GTK_TYPE_IM_MULTICONTEXT, GtkIMMulticontextClass))