QDialogBu​​ttonBox按钮连接后无法正常工作

Question

我有一个mainWindow类，当双击QTabBar时调用函数mainWIndow::ShowDialogBox()。对话框显示，但不是连接按钮。我在ShowDialogBox中进行了连接调用。它给了我一个关于连接的红色下划线

 no instance of overloaded function "MainWindow::connect" matches the argument list"

这是我的代码

bool MainWindow::eventFilter(QObject *object, QEvent *event)
 {
    if (object == mTabWidget->getTabBar() && event->type() == QEvent::MouseButtonDblClick) 
    {
        qDebug()<<"dblclk";

    ShowDialogBox();

    }

    return QObject::eventFilter(object, event);
}

//Show dialog box when double clicked on QTabBar
void MainWindow::ShowDialogBox(){

    QDialog dialog;
    QVBoxLayout layout(&dialog);
    QLineEdit editLine;
    layout.addWidget(&editLine);

     QDialogButtonBox *dialogButton = new QDialogButtonBox(QDialogButtonBox::Ok );
     connect(dialogButton, SIGNAL(accepted()), dialog, SLOT(accept())); //this 'connect' is underlined
     layout.addWidget(dialogButton);
     dialog.setLayout(&layout);


    if(dialog.exec() == QDialog::Accepted)
    {
        mTabWidget->setTabText(0, editLine.text());
    }

  }

我已将mainWindow.h中的信号和插槽添加为

private slots:
    void accept();

signals:

    void accepted();

我花了好几个小时但没有运气。我是Qt的新手。

Answer 1

行：

connect(dialogButton, SIGNAL(accepted()), dialog, SLOT(accept()));

应该是：

connect(dialogButton, SIGNAL(accepted()), &dialog, SLOT(accept()));

因为第三个参数必须是内存地址（指针）。