Hi guys!

I've got the following situation:

Somewhere in my GUI I start a lengthy computation in my BackgroundImageItem which inherits from QThread:

Qt Code: 
  1. BackgroundImageItem* back = new BackgroundImageItem(filename);
  2. // let the worker thread work:
  3. back->start();
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to inform the user that the application is working, I have written the following simple self-updating Progressbar:

Qt Code: 
  1. class ThreadedProgressBar : public QThread, public QProgressBar
  2. {
  3. public:
  4. 	ThreadedProgressBar(QWidget * parent)
  5. 	: QProgressBar(parent)
  6. 	{
  7. 		this->setGeometry(
  8. 				(parent->width() - 300)/2,
  9. 				(parent->height()-30)/2,
  10. 				300, 30);
  11. 		this->setTerminationEnabled(true);
  12. 		this->start();
  13. 	};
  14. 	void run()
  15. 	{
  16. 		while(true)
  17. 		{
  18. 			this->setValue((this->value()+20)%100);
  19. 			this->update();
  20. 			this->msleep(100);
  21. 		}
  22. 	};
  23. 	virtual ~ThreadedProgressBar();
  24. };
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What I did then to show this ThreadedProgressbar was:

Qt Code: 
  1. BackgroundImageItem* back = new BackgroundImageItem(filename);
  2. // let the worker thread work:
  3. back->start();
  4. //start the progressBar,
  5. //note: this->parentWidget() is the main widget of my app
  6. ThreadedProgressBar * pbar = new ThreadedProgressBar(this->parentWidget());
  7. // Join the gui thread with the worker thread
  8. back->wait();
  9. // a thread must be terminated before being deleted
  10. pbar->terminate();
  11. //clean up
  12. delete pbar;
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BUT THE PROGRESS BAR DOES NOT SHOW UP !!!!

I'm sure I just did a small mistake!

Thanks for zour help in advance,
best regards,
Olli