}
protected:
- virtual QwtText trackerText( const QwtDoublePoint& p ) const
+ using QwtPlotZoomer::trackerText;
+ virtual QwtText trackerText( const QwtDoublePoint& p ) const
{
QwtText t(QString("%1 %2, %3 dB").
arg(p.x(), 0, 'f', GetFrequencyPrecision()).