Hi,
I'm new with QWT but I'm very enthousiastic with this framework. I'm already able to plot a lot of curves having a lot of points. But now I'd like to be able to drag (shift using the mouse) a selected curve. I'm able to do that in the QwtPlot but I have to replot() all curves with mouse move Event which is a bit slow when a lot of curves are displayed.
Reading this QwtWidgetOverlay Example, I'm able draw lines smoothly while a lot of curves are displayed.
So I wonder if it's possible to plot/draw curve inside the overlay/QPainter which could avoid a huge replot();
Thanks in advance
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