QWidget::update() qeustion

[wysota]

I cannot understand I can't access GUIs in worker thread.

Well... you just can't.

I updates by using a thread which check status of other system.
If status is changed,
I set values in member variables in CUIGOCIImgStatus to update , then I call updates().

Sorry, that's forbidden.

Usually, this works well.

Yes... usually That's the key word here.