CEGUI (Crazy Eddie's GUI) Forums

Hi!

While reading the code, I see that the unsuscribe method is private, so I would like to know which is the right way to unsuscribe an event without destroying the sender or receiver.

Thanks!

When you subscribe to an event you get returned a CEGUI::Event::Connection object. This can be used to disconnect / unsubscribe by calling the disconnect() method. There's also a CEGUI::Event::ScopedConnection class that will auto-disconnect when the ScopedConnection object goes out of scope.

HTH

CE.

Thanks for the quick reply!

This is the scenario:

I want to have a handle function that will subscribe to all the event of one type of gui element. Let´s say it is a PushButton for simplicity and the EventClicked event.

So if I suscribe all the instances of pushbutton with this unique function I need to keep a copy of each connection object in order to unsuscribe them?

Is there a way to avoid having that reference?, like requesting it or something?

Thanks!

Yeah, you pretty much need to track those Connection objects The internals of it are that each subscription to an event creates a new internal 'subscriber' object; the only external way to control that is via the returned Connection.

Since you're obviously after something a little more advanced, you might consider sub-classing the types you're targetting and setting up something custom built via the Windows on<event> handlers (which you could code in such a way to enable quick and easy connections right across all instances of the type). If you register a factory for your subclasses and alias them to the 'normal' type (for example Taharez/Button), then whenever a widget of that type is requested, they'd actually get your sub-class.

Not sure if that's explained very well, but I hope so

CE.

ummm, interesting idea, I will think over it a little.

Ok, but why is the event unsubscribe private?

Should not be public and have a unsubscribeEvent call?

That will prevent the storing of the connection object, no?

The unsubscribe method is an implementation method, I'm not entirely sure if it works the way you want it to

Have you tried making it public and running a few tests to see if it works okay? If it does, let me know, and I'll run a few tests of my own and will consider promoting the method into the public interface.

CE.

Nope, I was asking in order to get the designer view before getting my hand dirty.

I will give it a a try and tell you how it goes.