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Asked: 2026-05-24T05:50:34+00:00

I have a QSystemTrayIcon subclass. Inside it, I have: quitAction = new QAction(tr(&Quit), m_parent);

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I have a QSystemTrayIcon subclass. Inside it, I have:

quitAction = new QAction(tr("&Quit"), m_parent);
connect(quitAction, SIGNAL(triggered()), qApp, SLOT(quit()));

CloseEvent doesn’t work here. How can I catch this quit event? I want to save data before closing.

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1 Answer

  1. Editorial Team

    You should connect your cleanup/save code to the QCoreApplication::aboutToQuit() signal.

    This signal is emitted when the application is about to quit the main event loop, e.g. when the event loop level drops to zero. This may happen either after a call to quit() from inside the application or when the users shuts down the entire desktop session.

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