-{
- GtkWidget *drawing_area = gtk_drawing_area_new ();
-
- g_signal_connect (G_OBJECT (drawing_area), "expose_event",
- G_CALLBACK (expose_event_callback), NULL);
-}
-
-
-gboolean
-expose_event_callback (GtkWidget *widget, GdkEventExpose *event, gpointer data)