Re: Callbacks and widgets

[Gonzalo Aguilar Delgado <gad aguilardelgado com>]

Hi, stefan.

This looks also good but it's a pain to have to instanciate every
widget. But for some special widgets may be a great solution...

Thank you for your reply.


> hi,
> Gonzalo Aguilar Delgado wrote:
> > Yep, I know about some of them:
> >
> >     1.- Passing a data structure
> >     2.- Using global variables (not good threading support)
> >     3.- Passing window to gpointer and searching.
>          4.- Use GObjects for you UI
>
> In my apps I don't directly insert e.g. a gtk_hbox, but derive a class from it 
> (e.g. MyOptionGroup) and this class has aditional datafields. The callback gets 
> the pointer to the instance of the MyOptionGroup as user_data.
>
> Stefan
>
> > But the point is. 
> >
> > What is the best way? Is there any other way to do that? Because
> > structure option looks more suitable for different data to be passed not
> > just widgets...
> >
> > I tried to set the widgets as user-data of the widget to be triggered.
> > But it seems not to work.
> >
> > I will look anyway in the older mailing list.
> >
> > Thank you.
> >
> >
> >
> > > On Tue, Mar 28, 2006 at 09:38:20AM +0200, Gonzalo Aguilar Delgado wrote:
> > >
> > > > Because receiver callback is getting only the receiver widget,
> > >
> > > In addition, the callback gets an arbitrary pointer passed
> > > as user_data to g_signal_connect().  A pointer can be used
> > > to pass anything.
> > >
> > > This is a very frequently asked question, search the
> > > archives for discussion...
> > >
> > > Yeti
> > >
> > >
> > > --
> > > That's enough.
> > > _______________________________________________
> > > gtk-app-devel-list mailing list
> > > gtk-app-devel-list gnome org
> > > http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
-- 
Gonzalo Aguilar Delgado - Ingeniero en InformÃtica
        [ Seguridad & Medios de pago ]