What is the recommended way to create custom scale labels for QKnob? What I am trying to achieve is something like this: 1 0.5 0.2 0.1 50 20 10 5 2 1 0.5 etc. I gather I need to overload QwtRoundScaleDraw and QwtRoundScaleDraw::label() but I am sure where to define the custom scale.
