Hello!
I want to use this code to adjust the axis pitch, but such an error appears. Why and how can this be fixed?

QSharedPointer<QCPAxisTickerFixed> fixedTicker(new QCPAxisTickerFixed);
customPlot->xAxis->setTicker(fixedTicker);

fixedTicker->setTickStep(1.0);
fixedTicker->setScaleStrategy(QCPAxisTickerFixed::ssNone);

Error: use of undeclared identifier 'QCPAxisTickerTime'