Boolean option to close a QT C++ GUI form?

Question

Qt

Here in the dialogue is easier. There for example
DIalog dg;
if (dg.exec())
{
...
}
And how to find out if the window is closed in a simple mainwindow?

Answer 1

Every widget has a close() slot that returns true if the widget is successfully closed.
Qt has excellent documentation qt-project.org/doc/qt-4.8/qwidget.html#close.
First, look there, then in Google, then write a question. It's so simple)
And Qt, not QT.

Answer 2

Catch void MainWindow::closeEvent(QCloseEvent *event), set your status variable as needed.