where QMdiSubWindow destructor should be called

[tkoomzaaskz]

Hi! I'm developing a standard MDI application and I don't know where should I call a MDI child window destructor.

Right now, I'm not calling it anywhere. My child window destructor prints some output do std::cout (some test output). When I close a child window I can see nothing in the Qt Creator console. But when I close the whole application (the QMainWindow), all console outputs are printed (terminating main window terminates all children).

I guess I should call the child destructor manually somewhere, but don't know where (maybe should use connect function anyhow)? Thanks for any help.

[tkoomzaaskz]

I found a way to destroy the window when the close ("X") button is clicked:

ChildWindow *child = new ChildWindow(ui->mdiArea);
child->setAttribute(Qt::WA_DeleteOnClose);
childWindows.append(child);
child->show();

ChildWindow *child = new ChildWindow(ui->mdiArea);
child->setAttribute(Qt::WA_DeleteOnClose);
childWindows.append(child);
child->show();

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The second line does the job. The solution is based on http://doc.qt.io/qt-4.8/qmdiarea.html#addSubWindow