F. H. Saad
11th July 2011, 16:49
How can I make the QwtKnob object display a logarithmic scale from 10 to 1000 with the following markers on the scale 10, 30, 100, 300 and 1000?
So far this is what I have:
QwtLog10ScaleEngine *engine = new QwtLog10ScaleEngine;
ui->d_knob->setScaleEngine( engine );
ui->d_knob->setRange(10.0, 1000.0 );
And that results in the QwtKnob displayed with the markers 10, 100 and 1000 only.
Thanks in advance,
So far this is what I have:
QwtLog10ScaleEngine *engine = new QwtLog10ScaleEngine;
ui->d_knob->setScaleEngine( engine );
ui->d_knob->setRange(10.0, 1000.0 );
And that results in the QwtKnob displayed with the markers 10, 100 and 1000 only.
Thanks in advance,