What's wrong with my actions???

[fullmetalcoder]

If the is no event loop running in that thread, queued connections won't work.

Isn't that an equivalent of adding Qt:irectConnection to connect statements?

Well, I expected my slots to be called directly but I think I now understand why they were not even if it looks strange... My nodes have been created in a given (now defunct) thread and some of their methods are called from the GUI thread. In this case created objects will be attached to the GUI thread (or am I missing something??) and it will cause Queued Connections by default which won't work properly...

[jacek]

My nodes have been created in a given (now defunct) thread and some of their methods are called from the GUI thread.

Maybe it will be enough if you simply move those objects to the GUI thread using QObject::moveToThread()?

[fullmetalcoder]

Maybe it will be enough if you simply move those objects to the GUI thread using QObject::moveToThread()?

I thought about that already but did not find any convininent way to do it in my code... Anyway I'm done now.