Re: [Vala] Problems with virtual extern methods.

[Jürg Billeter <j bitron ch>]

On Mon, 2009-06-01 at 05:23 -0400, Yu Feng wrote:
> Think about implementing the GtkBuildable interface(the interface
> itself) with VALA.
>
> If the interface definition is written in VALA to take the advantages of
> Vala, several of the accessor functions have to be supplied in C because
> they selectively chain down to derived implementations based on whether
> the instance is a GtkBuildable or not. Manually looking up the vtable is
> too much for VALA.

Can you point me to the code where GtkBuildable functions accept
instances not implementing GtkBuildable? From a quick glance at the
code, all the virtual method wrappers appear to contain

        g_return_if_fail (GTK_IS_BUILDABLE (buildable));

Jürg