Re: [Vala] GLib.Menu subclass

[Ondrej Tuma <konference webjet cz>]

V Wed, 29 Jun 2016 07:39:13 +0000
Luc Chante <luc chante 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 <konference 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 <mcbig zeropage cz>
www: http://ipv6.mcbig.cz   jabber: mcbig jabber cz   twitter: mcbig_cz

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