Need help with QToolButton

Whenever mouse points QToolButton, it draws 3D frame around itself. I checked this in documentation, by setting setAutoRaise() to false you can disable it.I tried, it didnt work.
Can some body explain how to disable it?

Thanks in advance,
Seema Rao

Sorry!! Documentation says set setAutoraise to true. But it didnt work

Err? You want it to be enabled or disabled?
Auto raise is disabled (false) by default. You can enable it by setting it to true.

Code:

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#include <QtGui>
 
int main(int argc, char *argv[])
{
	QApplication a(argc, argv);
 
	// button 1 (on the left), auto raise disabled
	QToolButton* b1 = new QToolButton;
 
	// button 2 (on the right), auto raise enabled
	QToolButton* b2 = new QToolButton;
	b2->setAutoRaise(true);
 
	QSplitter s;
	s.addWidget(b1);
	s.addWidget(b2);
	s.show();
 
	a.connect(&a, SIGNAL(lastWindowClosed()), &a, SLOT(quit()));
	return a.exec();
}

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