With picker->setDisplayMode(QwtPicker::AlwaysOn) the positions is always displayed.
If you want to see that the QwtPlotPicker::moved() signal is emitted - even when the mouse is not pressed - there are many different ways to do it. Probably the most easiest one is to overload QwtPlotPicker::widgetMouseMoveEvent this way:
Qt Code:
{ emit moved(invTransform(me->pos)); }To copy to clipboard, switch view to plain text mode
HTH,
Uwe
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