 <p>Adjust <a href="http://doc.trolltech.com/4.7/qwidget.html#minimumHeight-prop" rel="nofollow">QToolBar::setMinimumHeight()</a> or <a href="http://doc.trolltech.com/4.7/qwidget.html#minimumSize-prop" rel="nofollow">QToolBar::setMinimumSize()</a> to your needs.</p> <p>And don't forget to use appropriate icon sizes then.</p>