在QChartView中找不到缩放图形的鼠标滚轮滚动事件

MyChartView::MyChartView(QWidget *parent) : QChartView(parent)
{
    setRenderHint(QPainter::Antialiasing);
    setDragMode(QGraphicsView::RubberBandDrag);
    setRubberBand(QChartView::RectangleRubberBand);
    setMouseTracking(true);
    setInteractive(true);
}

void MyChartView::wheelEvent(QWheelEvent *event)
{
    if (event->modifiers() & Qt::ControlModifier) {
        // 获取当前的图表
        QChart *chart = this->chart();
        if (chart) {
            // 获取当前的缩放比例
            qreal factor = chart->plotArea().width() / chart->plotArea().height();
            if (event->delta() > 0) {
                // 放大图表
                chart->zoomIn(factor);
            } else {
                // 缩小图表
                chart->zoomOut(factor);
            }
        }
        event->accept();
    } else {
        // 非Ctrl键按下时，执行默认的滚轮事件
        QChartView::wheelEvent(event);
    }
}

MyChartView *chartView = new MyChartView();
chartView->setChart(chart);