[Vala] Properly wrapping callbacks

["Michael 'Mickey' Lauer" <mickey vanille-media de>]

Hi,

I'm working on my first binding for a non-gobject library -- please see 
gsm0710_p.h.

My current vapi is also attached. I'm struggling with setting the callback 
pointers now. How should the callbacks in my .vala object be defined so that 
I can set them via e.g. 

<callback>

var ctx = new Context();
ctx.at_command = <callback>

Cheers,

Mickey.

-- 
:M:

Attachment: gsm0710_p.h
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