@kropp thanks for your reply. When would the unregistering be done? There are no c++like destructors in KN. Or did i just miss them?

uli: same approach as in function memScoped() could be used. Whenever certain scope is exited - cleanup handlers will be executed. Object lifetime-based resource accounting is usually flawed design, so we intentionally do not provide finalizers to objects.

Did you take note of the example i was commenting on? Within the proxy object there is a listener proxy that gets registered at object creation time. This needs to be unregistered at some point. Do you see a solution for that case? Or do you consider it bad design?

I would say, that unregistration shall take place once listener no longer relevant for an object (i.e. when application/dialog is destroyed)

I am not convinced yet. But thanks any way.

@uli I don't have answer right now, need to investigate and prototype first

I guess that's fine at this time