QwtPlotMarker & Autoscale #Qt

Question

I have a "problem" with Qwt. When I set a QwtPlotMarker, the autoscale functions of the X & Y axis are bound to my QwtPlotCurve only. Is there a way to take in consideration my markers without plotting another curve for my lines ?

I want to set 2 horizontal lines (HLine) in order to show the limits where the curve should be in.

Thanks.

Have a nice day

Answer 1

marker->setItemAttribute( QwtPlotItem::AutoScale, true );