QAction *orderAct = new QAction(QIcon(":/image/space.png"),tr("下单"), this);
orderAct->setShortcut(Qt::Key_Space);
connect(orderAct, SIGNAL(triggered()),this, SLOT(prepareToDeliverData()));
this->addAction(orderAct);
没有使用QMenu
也没有setFixedWidth方法可用
>_<