QDialogBu​​ttonBox按鈕好吧，不要在連接之後再打

Question

我有一個mainWindow類，當雙擊QTabBar時調用函數mainWIndow::ShowDialogBox()。該對話框出現，但它沒有連接按鈕。我在ShowDialogBox中有連接調用。它給了我一個紅色下劃線上連接話說

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

這是我的代碼

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()); 
    } 

    } 

我已經加入的信號和插槽mainWindow.h作爲

private slots: 
    void accept(); 

signals: 

    void accepted(); 

我不得不花費數小時在這但沒有運氣。我是Qt新手。

Answer 1

線：

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

應該是：

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

由於第三參數必須是一個存儲器地址（指針）。