Indeed, it should have a more meaningful error. Don't forget to file a bug report!
I have seen this behaviour with some other classes and I suspect it will become more and more common as GLib/GTK/Clutter move towards preferring composition over inheritance (and in certain cases enforcing it). Does Vala need a "final" or "sealed" keyword for Classes? Chris 2016-06-29 1:58 GMT-07:00 Ondrej Tuma <konfere...@webjet.cz>: > V Wed, 29 Jun 2016 07:39:13 +0000 > Luc Chante <luc.cha...@gmail.com> napsáno: > > > Hi, > > > > https://developer.gnome.org/gio/stable/GMenu.html#GMenu.other_details > > > > I'm not sure that GLib.Menu made to be overridable. > > In python PyObject is possible. But if could not be, that should not be > in Vala, so the error should be from Vala not from C compiler. > > > You could decorate it : extend MenuModel, with a private property > > which is a Menu, and override every methods of MenuModel by calling > > the private property. > > > > private GLib.Menu internal_men; > > > > public override int get_n_items() { > > return this.internal_menu.get_n_items(); > > } > > > > Le mer. 29 juin 2016 à 08:44, Ondrej Tuma <konfere...@webjet.cz> a > > écrit : > > > > > Hi all, > > > > > > I try to create GLib.Menu subclass, but it fails. Here is code: > > > > > > public class MyMenu : Menu { > > > public MyMenu(){ > > > append ("Item label", "app.my-action"); > > > } > > > } > > > > > > And here is error: > > > > > > /home/mcbig/tmp-dev/vala/gmenu.vala.c:39:8: error: field > > > ‘parent_instance’ has incomplete type > > > GMenu parent_instance; > > > ^ > > > /home/mcbig/tmp-dev/vala/gmenu.vala.c:44:2: error: unknown type name > > > ‘GMenuClass’ > > > GMenuClass parent_class; > > > ^ > > > error: cc exited with status 256 > > > > > > Yes, there is not GMenuClass in gio/gio.h. I'm not sure if this > > > problem is in gio/gio.h or gio-2.0.vapi. I got this error on debian > > > Jessie (valac-0.26). > > > What I see, glibmm define it's GMenuClass in it's giomm/menu.h. > > -- > Ondřej Tůma <mc...@zeropage.cz> > www: http://ipv6.mcbig.cz jabber: mc...@jabber.cz twitter: mcbig_cz > > _______________________________________________ > vala-list mailing list > vala-list@gnome.org > https://mail.gnome.org/mailman/listinfo/vala-list > > -- Chris Daley Pacific Northwest e: chebiza...@gmail.com w: http://chrisdaley.biz m: +1-971-703-9251 s: chebizarro tw: chebizarro tz: PDT _______________________________________________ vala-list mailing list vala-list@gnome.org https://mail.gnome.org/mailman/listinfo/vala-list
