设置鼠标滚动事件

bool SubTitlePushButton::event(QEvent *event)
{
/*    if (event->type() == QEvent::Paint)
    {
        QPaintEvent *e = static_cast<QPaintEvent*>(event);
        paintEvent(e);
        return true;
    }
    else 
*/
     if (event->type() == QEvent::Wheel)
    {
        QWheelEvent *e = static_cast<QWheelEvent*>(event);
        wheelEvent(e);
        return true;
    }
    QPushButton::event(event);

    return true;
}