QwtKnob with only one possible value

[achard.ju]

Hi everyone !

I have some trouble on setting up a knob with only one value possible.

My knob represent some enumerate and let user choose a value.
An enumerate can be composed of only one field value.

In this case i can't manage to display my knob with a scale from 0 to 0.

Is this a bug (fixed?) or is it a normal behavior?

thanks a lot for your time.

[achard.ju]

Nobodies?

I've tried this in an empty project, same behavior.
Seems we can't do this with QwtKnob

[Uwe]

A scale with a range of 0 is somehow useless, but nevertheless you could try:

QwtScaleDiv sd( 0.0, 0.0 );
sd.setTicks( QwtScaleDiv::MajorTick, QList<double>() << 0.0 );
knob->setScale( sd );

QwtScaleDiv sd( 0.0, 0.0 );
sd.setTicks( QwtScaleDiv::MajorTick, QList<double>() << 0.0 );
knob->setScale( sd );

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Uwe