Re: [Vala] How do I call functions which have a "ref" variable as one of their argument

[Jürg Billeter <j bitron ch>]

On Tue, 2009-04-07 at 15:19 +0200, Jaap A. Haitsma wrote:
> I've wanted to restart working on my vala branch of cheese. In the
> meantime vala has received quite some changes. Therefore it does not
> compile anymore. The main problem I have are "ref" variables. For
> example with the text_extents method of Cairo
>
>               TextExtents extents;
>               text_extents ("hello", ref extents);
>
> This does not compile because the compiler says.
> "use of possibly unassigned local variable `extents' text_extents
> ("hello", ref extents);"
>
> What should I do here or is it a bug in text_extents?

This is a bug in text_extents, it should be an `out' parameter (should
have been from the beginning). Fixed in master.

>               RawError dbus_error;
>               
>               dbus_error.init ();

> complains about the fact that dbus_error is unassigned.

That is a bad binding, improved now in master:

        // calls dbus_error_init in the generated code
        var dbus_error = RawError ();

Jürg