Comment 9 for bug 1630375

By digging around a bit I found out that the call used in the current code to show the menu:

popup(null, null, null, 0, Gtk.get_current_event_time());

Is now deprecated. I assume it should be:

popup_at_pointer();

However that doesn't work either (although the error is different). It seems to be calling popup_at_rect() internally but with the wrong arguments, maybe there is a way around it.

I'm not sure this is of any use, but given that I didn't know Vala even existed before today, I'm afraid I can't go much further.