a_dialog_info_msg ( VIK_GTK_WINDOW_FROM_WIDGET(vlp), _("Aggregate Layers have no settable properties.") );
VikLayer *layer = VIK_LAYER( vik_treeview_item_get_pointer ( vlp->vt, &iter ) );
if (vik_layer_properties ( layer, vlp->vvp ))
a_dialog_info_msg ( VIK_GTK_WINDOW_FROM_WIDGET(vlp), _("Aggregate Layers have no settable properties.") );
VikLayer *layer = VIK_LAYER( vik_treeview_item_get_pointer ( vlp->vt, &iter ) );
if (vik_layer_properties ( layer, vlp->vvp ))