QProgress bar - Busy Indicator - Strange behaviour

I'm trying to add a Progress bar as a busy indicator. However, it's behaving strange - the 'progress' only goes a quarter of the way up the bar and then restarts at the beginning. I'm using the following code:

test.cpp

Code:

---

test::test()
{
  QProgressBar *qProBar = new QProgressBar;
  qProBar->setRange(0,0);
 
  QVBoxLayout *mainLayout = new QVBoxLayout();
  mainLayout->addWidget(qProBar);
 
  setLayout(mainLayout);
}

---

test.h

Code:

---

class test : public QWidget
{
  Q_OBJECT
 
public:
  test();
  ~test();
};

---

I couldn't find any similar problems on the net, and the code is as minimal as it can get. Any ideas? Thanks in advance!

What's the point of setting the bar's range to 0 ? :confused:.

http://doc.trolltech.com/latest/qpro...r.html#details

"If minimum and maximum both are set to 0, the bar shows a busy indicator instead of a percentage of steps. This is useful, for example, when using QFtp or QNetworkAccessManager to download items when they are unable to determine the size of the item being downloaded."

Ah , now i see. Works fine for me though...indicator runs the whole path repeatedly. Do you have any problems with displaying other widgets or it only happens with QStatusBar?

Strange. I'm using Visual Studio 2010. I tried running my app under Release rather than Debug and the progress bar works as expected.
Thanks anyway.