如何避免鼠标事件被QGraphicsView吃掉

void MyGraphicsView::mousePressEvent(QMouseEvent *event)
{
    QGraphicsView::mousePressEvent(event);
    // 处理自己的鼠标按下事件
}

myGraphicsView->setInteractive(true);

class OverlayWidget : public QWidget
{
protected:
    void mousePressEvent(QMouseEvent *event) override
    {
        // 处理鼠标按下事件
        QGraphicsView *view = qobject_cast<QGraphicsView *>(parent());
        if (view)
        {
            QMouseEvent mappedEvent(event->type(), view->mapFromGlobal(event->globalPos()), event->button(), event->buttons(), event->modifiers());
            QApplication::sendEvent(view->scene(), &mappedEvent);
        }
    }
};

OverlayWidget *overlay = new OverlayWidget(myGraphicsView);
overlay->setAttribute(Qt::WA_TransparentForMouseEvents);
myGraphicsView->setViewport(overlay);