EXtend functionality of QListWidget by making a plugin and use it in designer?

[wysota]

Here is onehttp://www.qtforum.org/thread.php?th...ght=Q+PROPERTY), that is asking exactly what i am asking.

It's not exactly what you are asking. The poster there can't add any properties, and you can't see the ones which are already there.

So i am starting to think it is not possible.

I assure you it's possible.

I think that it is only possible to edit the properties of the base class QWidget even though the documentation vaguely suggests that it is supposed to be possible to make the properties editable in designer by declaring Q_PROPERTY() in the class declaration.
SO if someone can prove me wrong i will jump with joy.

Of course it's possible to add new properties and to see existing ones.

Here you go, you may base your widget on the code attached.