I intend to fill the area on curve between two lines(in my case horizontal). I believe for only one baseline, the requisite methods are QwtPlotCurve::setBrush() and QwtPlotCurve::setBaseline(). But how do I set two baselines?
I think the problem in this thread Fill-area-above-baseline-and-below-the-curve is very similar. However from Qwt6 I see QwtPlotCurve::fillCurve() method as virtual. Can anyone suggest how to go ahead and add more than one baselines?