Multiple curves with both dots and lines

[Patrik]

Hi, I need to do something like this


Basically I need to do two things:

1) Plot one or more curves

2) Draw a symbol at each sample and the line connecting two samples

I think the first can be done by attaching two QwtPlotCurve objects to the same QwtPlot. For the second I've tried this

QwtPlotCurve::CurveStyle style = (QwtPlotCurve::CurveStyle)(QwtPlotCurve::Lines|QwtPlotCurve::Dots);

QwtPlotCurve::CurveStyle style = (QwtPlotCurve::CurveStyle)(QwtPlotCurve::Lines|QwtPlotCurve::Dots);

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but it does not work. Any ideas?