În data de Jo, 07-05-2009 la 20:18 +0000, Jan Hudec a scris:
> Adi Roiban <a...@...> writes:
> > În data de Mi, 06-05-2009 la 17:48 +0000, Jan Hudec a scris:
[snip]
> > For example in the case of MenuItem, we have the "activated" signal and
> > there is not way to pass userdata when connecting the signal.
> > The method called for the "activate" signal will only receive a pointer
> > to the MenuItem... and I can not pass userdata.
> False!
>
> You can always specify a user data for g_signal_connect(). Vala uses
> that pointer to pass in the *invocant* of the handler. So all you have to do
> is create an object describing the action to take and connect it's instance
> method (*not* static) to the activated signal of the menu item.
Thank you very much for you explanations!
I don't know how to connect userdata. Can you point me to some
documentation?
Reading the Vala wiki pages I know I can use this syntax:
menuItem.activated += (sender) => {doSomething(sender)};
Where should I fit the userdata?
> Alternatively, you can simply attach data to the MenuItem using the
> Glib::Object method set_data (and corresponding get_data to read them).
I didn't knew about this nice feature of GObject. Thanks!
> > Maybe this is a problem with GTK bindings for Vala.
>
> I see the only problem in that it might not be immediately obvious
> where the data argument of g_signal_connect has gone and how to use it.
You are right, in this case the problem is between the chair and
keyboard :D
Cheers!
--
Adi Roiban
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