Re: buildable interface testers error

[Kevin Ryde <user42 zip com au>]

Torsten Schoenfeld <kaffeetisch gmx de> writes:
> I think this might happen if the installed gtk+ is not recent enough
> to have GtkBuildable (it was introduced in gtk+ 2.12).  In this case,
> Gtk2 doesn't compile the Gtk2::Buildable wrappers and doesn't provide
> _ADD_INTERFACE either.

Ahh.

> So I think you'll have to do some version checking with Gtk2->CHECK_VERSION.

Is there a direct way to ask if something is an implementable interface?
I guess Gtk2::Buildable->can('_ADD_INTERFACE'), but if that's supposed
to be used.

> Or should the bindings behave differently in such a case?

The error message is fairly obscure.  But an error from
Glib::Object::Subclass is probably good.  For myself I'll want to
quietly drop Buildable when not available, but for other interfaces that
could be bad.