QT: QTimeEdit小部件中“上”和“下”箭头的事件

class MyTimeEdit : public QTimeEdit
{
public:
    MyTimeEdit(QWidget *parent = nullptr) : QTimeEdit(parent) {}

protected:
    void wheelEvent(QWheelEvent *event) override
    {
        int delta = event->angleDelta().y();
        if (delta > 0)
        {
            // 向上滚动，增加时间值
            QTime time = this->time().addSecs(60);
            this->setTime(time);
        }
        else if (delta < 0)
        {
            // 向下滚动，减少时间值
            QTime time = this->time().addSecs(-60);
            this->setTime(time);
        }
        event->accept();
    }
};