Re: [Vala] canberra.vapi

[Frederik <scumm_fredo gmx net>]

Michael 'Mickey' Lauer wrote:
> This binding is for libcanberra, a sound event library. 
> Seehttp://0pointer.de/lennart/projects/libcanberra/ for more information.
>
> The bindings should be relatively straightforward, the only thing I'm not 
> satisfied with is the way of creating a canberra context and  proplist: Since 
> libcanberra has no way to return a newly constructed handle, I had to bind 
> this as reference. Therefore right now you have to use it like that:
>
>             Canberra.Proplist p = null;
>             Canberra.Proplist.create( &p );
>
> (which I find a bit ugly).

Hi,

just mark them as out parameters, and the destroy() functions are free
functions:

 [Compact]
 [CCode (cname = "ca_proplist", free_function = "ca_proplist_destroy")]
 public class Proplist {
     public static int create( out Proplist p );
 //  public Error destroy();   // not needed anymore
 // ...
 }

 [Compact]
 [CCode (cname = "ca_context", free_function = "ca_context_destroy")]
 public class Context {
     public static Error create( out Context context );
 //  public Error destroy();   // not needed anymore
 // ...
 }


Usage:

 Canberra.Context c;
 Canberra.Context.create (out c);



Best Regards,

Frederik