how can I be notified when asynchronous process is over ?

[Alexis Sukrieh <spam@sukria.net>]

Hello list :)

I'm writing a Gtk2 app which has to launch external processes. In order 
to do that I use the Glib function "g_spawn_async".

I wonder how I can be notified when it is finished. I was thinking about 
being aware of SIGCHILD but I don't know how to do that.

If someone could tell me what is the best way to do that, it would be 
great.

Thanks

Alexis.