[linux-audio-dev] Re: a bit off topic: GUI-lib-programming (how does it usually work?)

[Loki Davison]

On 3/6/06, Julien Claassen <julien at c-lab.de> wrote:
> Hi!
>   I know, this may be a bit off topic. But I've a dificulty:
>   I'm currently programming a textbase "GUI"-lib. I want the programming API
> to be similar to on of a real GUI-lib (gtk, you name them).
>   Now I'm wondering, there are menus. Menus have menuitems and if you click
> on
> one, something should happen. How is this "something should happen" part
> usually done?

It's done by registering a call back. In current gtk versions this is
done by having actions and they have a label and are associated with a
particular function. Using the python bindings
http://www.pygtk.org/pygtk2tutorial/sec-UIManager.html explains the
general idea for menus. There is an example there. All buttons etc in
gtk work the same i.e with call backs being registered.

Loki