[help] How to start/stop updating widget members using QButton?

[high_flyer]

However, I need to delegate this process to separated threads/process/events

Why is that?

I am not quite sure I follow on what you are trying to do:
you have a buttong with which you want to start a new thread?
And you want to update your QTextEdit from that thread?

If this is the case, you can just start/stop the thread in the slot connected to the button.
And you can connect a signal from the thread to the QTextEdit::setText() slot.

[rayglide]

Thanks for the reply and sorry I've just read it now.

Yes, thanks now I know that actually slot is running on separate thread from main gui thread. Previously I think that if I go indefinite loop in the slot connected to button signal then the gui will stuck. Anyway I used QTimer for my purpose, so I can change the interval of the update whenever I want.

Thanks.