QwtPlotCurve color for connecting lines

I'm trying to draw various styles for a QwtPlotCurve, and the only color I get is black. I can make the symbols whatever color I choose, but the symbol color isn't changing the connecting lines.

Code:

---

... // m_graphics is a QwtPlotCurve*
 
	int curve_style = get_curve_style();
	int symbol_style = get_symbol_style();
	int pen_style = get_pen_style();
	QColor c = get_color();
 
	m_graphics->setStyle(static_cast<QwtPlotCurve::CurveStyle>(curve_style));
	m_graphics->setPaintAttribute(QwtPlotCurve::PaintFiltered);
 
	QwtSymbol symbol;
	QPen p;
	QBrush b;
	b.setStyle(Qt::SolidPattern);
	b.setColor(c);
 
	p.setStyle(static_cast<Qt::PenStyle>(pen_style));
	p.setColor(c);
 
	symbol.setBrush(b);
	symbol.setPen(p);
	symbol.setSize(QSize(5,5));
	symbol.setStyle(static_cast<QwtSymbol::Style>(symbol_style));
 
	m_graphics->setSymbol(symbol);

---

m_graphics is later used by calling setRawData() and then draw(int, int). I'm using Qwt 5.2.1.

Why doesn't the color "c" get used for the lines connecting the symbols?

Thanks,
Tom

Use QwtPlotCurve::setPen(), see: http://qwt.sourceforge.net/class_qwt...9d1e485d2d0c4d

Uwe