这样写对不对?
QPushButton *printbutton = new QPushButton(QObject::tr("打印"));
        //actPrint = printbutton->addAction(tr("打印文档"));
        void QWebView::print(QPrinter *print)const
        //QPrintPreviewDialog *dialog = new QPrintPreviewDialog(this);
        QObject::connect(button,SIGNAL(clicked()),view,SLOT(Print()));