Hello,
I am beginner in qt and i would like it know if i can rotate a QwtSymbol. My code is as follows:

QwtSymbol *statesym1 = new QwtSymbol();
statesym1->setStyle(QwtSymbol::Rect);
statesym1->setPen(QColor(Qt::black));
statesym1->setBrush(Qt::black);
statesym1->setSize(30,15);

QwtPlotMarker * marker = new QwtPlotMarker;
marker->setSymbol(statesym1);
marker->setXValue(2);
marker->setYValue(3);
marker->attach(this);

I am using Qwt 6.1.1 and qt4.8.6