Re: Converting a Glib::ValueBase to a derived type

[José Alburquerque <jaalburquerque cox net>]

Murray Cumming wrote:
> On Tue, 2008-01-29 at 23:48 -0500, José Alburquerque wrote:
>   
> > I'm wondering, would anyone know how to convert a Glib::ValueBase to one 
> > of its derived types (such as Glib::Value<int>) assuming the derived 
> > type has been returned from a function as the base class 
> > Glib::ValueBase?
> >     
>
> Don't do that
> ( Glib::ValueBase get_something() )
>
> Do this:
>   void get_something(Glib::ValueBase& value);
>
> Then it's up to the caller to pass the correct type, and it's up to the
> get_something() to complain at runtime if it's not the correct type.
>
> See, for instance, Gtk::TreeModel.
>
>
>   
I see; it works better returning value in reference.  Thanks.

-Jose