QProgressBar.setValue causes a stackoverflow

class MainWnd : public QWidget
{
	int m_Max;
	int m_Value;
	int m_TimerId;

	QProgressBar* m_pProgressBar;

public:
	MainWnd()
		:m_pProgressBar(NULL)
		,m_Max( 10)
		,m_Value( 0)
	{
		m_pProgressBar = new QProgressBar( this);
		m_pProgressBar->setRange( 0, m_Max-1);
		m_TimerId = startTimer( 100);
		m_pProgressBar->setFixedWidth( this->width());
	}

protected:

	virtual void timerEvent ( QTimerEvent * event ){
		if(event->timerId() == m_TimerId){
			if( m_Value < m_Max){
				++m_Value;
				m_pProgressBar->setValue( m_Value);
			}else{
				close();
			}
		}
		QObject::timerEvent( event);
	}
};

int main(int argc, char *argv[])
{
	QApplication app(argc, argv);
	MainWnd mWnd;
	mWnd.show();
	app.exec();
}