#define GTK_IS_MESSAGE_DIALOG_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GTK_TYPE_MESSAGE_DIALOG))
#define GTK_MESSAGE_DIALOG_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GTK_TYPE_MESSAGE_DIALOG, GtkMessageDialogClass))
#define GTK_IS_MESSAGE_DIALOG_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GTK_TYPE_MESSAGE_DIALOG))
#define GTK_MESSAGE_DIALOG_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GTK_TYPE_MESSAGE_DIALOG, GtkMessageDialogClass))