home/gusions/sorgentielementary/ergo/Ergo/Widgets/ErgoWindow.vala:59.3-59.38: error: overriding method `Ergo.Widgets.ErgoWindow.delete_event' is incompatible with base method `Gtk.Widget.delete_event': incompatible type of parameter 1.
		protected override bool delete_event (Gdk.EventAny event) {
		^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
/home/gusions/sorgentielementary/ergo/Ergo/Widgets/ErgoWindow.vala:59.3-59.38: error: Ergo.Widgets.ErgoWindow.delete_event: no suitable method found to override
		protected override bool delete_event (Gdk.EventAny event) {
		^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Compilation failed: 2 error(s), 0 warning(s)
make[2]: *** [Ergo/Ergo.c] Errore 1
make[1]: *** [CMakeFiles/ergo.dir/all] Errore 2
make: *** [all] Errore 2