Re: learning gtk - callbacks

[Russell Shaw <rjshaw netspace net au>]

greg wolski wrote:
> Hi there,
> I am trying to learn gtk and I have a hard time to understand signals.
> This comes from helloworld in tutorial
>
> g_signal_connect (G_OBJECT (window), "delete_event",
>                   G_CALLBACK (delete_event), NULL);
> g_signal_connect (G_OBJECT (window), "destroy",
>                   G_CALLBACK (destroy), NULL);
>
>
> Question:
> How does gtk know what functions it should call?
> I mean for me it basically says: call this or this.
> Is it about the arguments that are declared in callback functions?
> This is a little bit confusing because no arguments are indicated in those connections.
>
> Thanks for any help,

The best way to learn is to google for gobject. A lot of detail on
gobject is here: http://www.le-hacker.org/papers/gobject/
There's also previous posts on the gtk lists on tutorials
being written. There's also: http://www.gtk.org/tutorial/

It will take a long time to get the hang of it, but it's
much easier after you do.