+ GObjectClass *object_class = G_OBJECT_CLASS (dc);
+
+ /* This signal is never emitted. It is just to satisfy the interface. */
+ signals [CHANGED] =
+ g_signal_new ("changed",
+ G_TYPE_FROM_CLASS (object_class),
+ G_SIGNAL_RUN_FIRST,
+ 0,
+ NULL, NULL,
+ g_cclosure_marshal_VOID__VOID,
+ G_TYPE_NONE,
+ 0);