Re: Template Widgets inside another GtkBuilder file

[Victor Aurélio Santos <victoraur santos gmail com>]

So the really question becomes, how to get `g_type_ensure` generated
in output code when subclassing Widgets in Vala ?

2015-10-05 17:54 GMT-03:00 Victor Aurélio Santos <victoraur santos gmail com>:
> Emmanuele,
>
> > In order to do that, you should use `g_type_ensure()` inside the
> instance initialization function of the parent's widget class
>
> Since using Vala, from what I can see in case of using [GtkTemplate]
> the g_type_ensure is generated, but when just subclassing a GtkWidget
> it doesn't exists in the generated .c, am I right ?
>
> And what I can do to g_type_ensure be present in generated .c in the
> second case ?
>
> Thanks.
>
> 2015-10-04 10:40 GMT-03:00 Emmanuele Bassi <ebassi gmail com>:
> > Hi;
> >
> > On 3 October 2015 at 02:14, Victor Aurélio Santos
> > <victoraur santos gmail com> wrote:
> > > How can I do that ?
> > > Just build all together results in this warning:
> > >
> > > > (ajami:3475): Gtk-CRITICAL **: Error building template class 'AjamiMainWindow' for an instance of type 
> > > > 'AjamiMainWindow': Invalid object type 'HVMeter' on line 2
> > >
> > > I've asked on SO[1] and got only one answer.
> > >
> > > I stick at "_get_type" workaround/hack but I didn't like it and I
> > > can't do the same thing in Vala (I've not found how to do the same
> > > thing).
> > >
> > > More details can be found on SO question.
> > >
> > > So, what I really want to know is what is the best option to
> > > accomplish this in Vala and in C too.
> > >
> > > [1]: http://stackoverflow.com/questions/24235937/custom-gtk-widget-with-template-ui
> >
> > If you have an internal, private widget that you use as a child in a
> > template, you'll need to ensure that the type system knows about the
> > child widget's type before initializing the template that references
> > it.
> >
> > In order to do that, you should use `g_type_ensure()` inside the
> > instance initialization function of the parent's widget class, right
> > before calling `gtk_widget_init_template()`; for instance:
> >
> >   g_type_ensure (hv_meter_get_type ());
> >
> > This is also what GTK+ itself does:
> > https://git.gnome.org/browse/gtk+/tree/gtk/gtkfilechooserwidget.c#n8598
> >
> > Ciao,
> >  Emmanuele.
> >
> > --
> > https://www.bassi.io
> > [ ] ebassi [ gmail com]
>
>
>
> --
> Victor Aurélio Santos



-- 
Victor Aurélio Santos