Dispatch menu action

[d_stranz]

It sounds like you have set up your actions incorrectly, so instead of it behaving the way you want it to, it's behaving the way you've told it to.

You might find QSignalMapper useful for this problem.

[ecir.hana]

It sounds like you have set up your actions incorrectly, so instead of it behaving the way you want it to, it's behaving the way you've told it to.

Could you please tell what I am doing wrong with this setup:

mainwindow.h:

class MainWindow : public QMainWindow
{
    Q_OBJECT
 
public:
    MainWindow(QWidget *parent = 0);
    ~MainWindow();
    QLineEdit *title;
    QLineEdit *name;
    QLineEdit *surname;
};

class MainWindow : public QMainWindow
{
    Q_OBJECT
    
public:
    MainWindow(QWidget *parent = 0);
    ~MainWindow();
    QLineEdit *title;
    QLineEdit *name;
    QLineEdit *surname;
};

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mainwindow.cpp:

MainWindow::MainWindow(QWidget *parent)
    : QMainWindow(parent)
{
    QVBoxLayout *vbox = new QVBoxLayout();
    title = new QLineEdit();
    vbox->addWidget(title);
    name = new QLineEdit();
    vbox->addWidget(name);
    surname = new QLineEdit();
    vbox->addWidget(surname);
    QWidget *w = new QWidget(this);
    w->setLayout(vbox);
    this->setCentralWidget(w);
 
    QMenu *undoMenu = menuBar()->addMenu("Edit");
//    undoMenu->addAction("Undo", this, SLOT(undo()), QKeySequence::Undo); // does nothing
    undoMenu->addAction("Undo", title, SLOT(undo()), QKeySequence::Undo); // undoes only title
}

MainWindow::MainWindow(QWidget *parent)
    : QMainWindow(parent)
{
    QVBoxLayout *vbox = new QVBoxLayout();
    title = new QLineEdit();
    vbox->addWidget(title);
    name = new QLineEdit();
    vbox->addWidget(name);
    surname = new QLineEdit();
    vbox->addWidget(surname);
    QWidget *w = new QWidget(this);
    w->setLayout(vbox);
    this->setCentralWidget(w);

    QMenu *undoMenu = menuBar()->addMenu("Edit");
//    undoMenu->addAction("Undo", this, SLOT(undo()), QKeySequence::Undo); // does nothing
    undoMenu->addAction("Undo", title, SLOT(undo()), QKeySequence::Undo); // undoes only title
}

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And thanks for the QSignalMapper link, I will have a look at it...