How to chain dialogs

[seneca]

I now have the main program working mostly as axeljaeger has suggested, with an additional connection to make the program quit after the last window is closed:

int main(int argc, char *argv[])
{
    QApplication app(argc, argv);
    ALoginView loginView;
    AMainView mainView;
    loginView.show();
    app.connect(&loginView, SIGNAL(accepted()), &mainView, SLOT(show()));
    app.connect(&app, SIGNAL(lastWindowClosed()), &app, SLOT(quit()));
    return app.exec();
}

int main(int argc, char *argv[])
{
    QApplication app(argc, argv);
    ALoginView loginView;
    AMainView mainView;
    loginView.show();
    app.connect(&loginView, SIGNAL(accepted()), &mainView, SLOT(show()));
    app.connect(&app, SIGNAL(lastWindowClosed()), &app, SLOT(quit()));
    return app.exec();
}

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It works as expected as long as the login dialog is closed by clicking on the login button. However if I hit the enter key in a textedit instead, the main window is displayed very short, but then the program immediately terminates.

Any ideas what could be the reason? Do I need to quit the program in a different way, or is quitting not necessary at all (such as in axeljaeger's example)?