QDialog as a QMdiSubWindow: Weird behavior when minimizing

[Alvein]

Hello!

This short program creates a QDialog as a MDI sub window.

I've noticed that minimizing the dialog makes the QDialog::exec() event loop to finish. Which makes no sense at all.

Anybody has an idea about how to solve this?

Thank you very much!

#include <QApplication>
#include <QtWidgets>

int main(int argc,char *argv[]) {
    QApplication  app(argc,argv);
    QMainWindow   win;
    QMdiArea      mdi;
    QMdiSubWindow *sub;
    QDialog       dlg;

    win.setCentralWidget(&mdi);
    win.show();

    sub=mdi.addSubWindow(&dlg);
    sub->resize(win.size()/2);

    qDebug() << "before dlg.exec()";
    dlg.exec();
    qDebug() << "after dlg.exec()";

    win.close();
    return 0;
}

I hope I'm overlooking some small detail and that the solution is simple haha

[JonB]

@Alvein
I don't know the answer to your question. But it always surprises me why anyone would use a QDialog as anything other than what it is intended for, such as an MDI subwindow:

A dialog window is a top-level window mostly used for short-term tasks and brief communications with the user.