Crashes if close MainWindow

[JacobNovitsky]

Having a loop, open MainWindow window, if close window with x button getting programm crashed

qtc.process_stub: Inferior error: QProcess::Crashed "Process crashed"
Press <RETURN> to close this window...

How to safe open and close main window?

MainWindow::MainWindow(QWidget *parent)
    : QMainWindow(parent)
    , ui(new Ui::MainWindow)
{
    ui->setupUi(this);
}

MainWindow::~MainWindow()
{
    delete ui;
}


void MainWindow::on_pushButton_clicked()
{


    secDialog = new SecDialog (this);
    secDialog -> show();

}

[JacobNovitsky]

@Christian-Ehrlicher it was problem in destructor, solved
thanks :)

[johngod]

Not sure if this will work, but:

MainWindow::~MainWindow()
{
    secDialog -> hide();
    delete secDialog;
    delete ui;
}

[Pl45m4]

@johngod

Not needed since MainWindow is parent of secDialog.

[JacobNovitsky]

@johngod does not help

how to get to main loop? exit MainWindow maturely

[Christian Ehrlicher]

If it crashes use a debugger to see where exactly it crashes. Then show us the code and we can say maybe more.

[JacobNovitsky]

@Christian-Ehrlicher it was problem in destructor, solved
thanks :)

[CompSciDude]

Crashes on exit are common if you do not have the parent-child hierarchy set up correctly.