rotating a custom made symbol for QwtPlotCurve

[babu198649]

hi
i have created a customized symbol by subclassing the QwtSymbol class and reimplementing the function,

class feather : public QwtSymbol
{
public:
	void draw(QPainter *painter, const QRect &r) const
	{
		//shape of symbol( |___ )
		QwtPainter::drawLine(painter, r.bottomLeft(), r.topLeft());
		QwtPainter::drawLine(painter, r.bottomLeft(), r.bottomRight());
	}
}

class feather : public QwtSymbol
{
public:
	void draw(QPainter *painter, const QRect &r) const
	{
		//shape of symbol( |___ )
		QwtPainter::drawLine(painter, r.bottomLeft(), r.topLeft());
		QwtPainter::drawLine(painter, r.bottomLeft(), r.bottomRight());
	}
}

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i want to rotate the symbols at some angle. but,i can not use the painter argument for doing this because its co-ordinates are not the co-ordinates of r(argument QRect).

how can i do this.