Call the mdiSubWindow destroyed slot from inside its class

Prmego

I have an override QMdiSubWindow class as follow:

// Declaration
class PSubWindow : public QMdiSubWindow {
    Q_OBJECT

public:
    explicit PSubWindow(QMdiArea *parent = 0);
    ~PSubWindow();
private:
    QMdiArea *parent;
protected:
    void closeEvent(QCloseEvent *event);
protected slots:
    void on_subWindow_destroyed(QObject *window);
};

// Definition (Constructor)
PSubWindow::PSubWindow(QMdiArea *parent) : QMdiSubWindow(parent){
    this->parent = parent;
    static ushort counter = 1;
    this->setAttribute(Qt::WA_DeleteOnClose);
    this->setObjectName("subWindow" + QString::number(counter));
    this->setWindowTitle("Untitled " + QString::number(counter++));
    // this is the target connection.
    QObject::connect(this, SIGNAL(destroyed(QObject*)), this, SLOT(on_subWindow_destroyed(QObject*)));
}
void PSubWindow::on_subWindow_destroyed(QObject *window) {
    qDebug()<< "sub-window destroyed";
}
void PSubWindow::closeEvent(QCloseEvent *event) {
    //qDebug()<< "closeEvent";
}

And then, I have created an instance of subWindow in another class as follow:

QMdiSubWindow *PActions::newFile() {
    PSubWindow *newWindow = new PSubWindow(this->mdiareaContainer);
    QMdiSubWindow *subWindow = mdiareaContainer->addSubWindow(newWindow);
    newWindow->show();
    return subWindow;
}

The problem is the destroyed connection is not implemented, and it does not report any error.
is there anything wrong in my code?

SGaist

Hi,

What do you mean by not implemented ? Isn't PSubWindow::on_subWindow_destroyed the implementation of that method ?

On a side note, connecting the destroyed signal from a class to an method of the same class isn't exactly a good idea. You are basically trying to call a method from an object that has been destroyed.