如何在QChart中用鼠标移动序列？

QChart *chart = new QChart();
QChartView *chartView = new QChartView(chart);

QLineSeries *series = new QLineSeries();
series->append(0, 0);
series->append(1, 1);
series->append(2, 2);
// 添加更多数据点...

chart->addSeries(series);

chartView->setMouseTracking(true);

void MyChartView::mouseMoveEvent(QMouseEvent *event)
{
    QPointF point = chartView->mapToValue(event->pos());
    series->replace(0, point.x(), point.y());
}

layout->addWidget(chartView);