rem: t_properties->startlevel = gtk_spin_button_get_value_as_int (GTK_SPIN_BUTTON (data)); gnibbles_properties_set_start_level (t_properties->startlevel);
add: level = gtk_spin_button_get_value_as_int (GTK_SPIN_BUTTON (data)); gnibbles_properties_set_start_level (level);
context: start_level_cb (GtkWidget *widget, gpointer data){	if (!pref_dialog)		return;	end_game (1);	t_properties->startlevel = gtk_spin_button_get_value_as_int		(GTK_SPIN_BUTTON (data));	gnibbles_properties_set_start_level (t_properties->startlevel);}