Setting QApplications "main widget" for exec()

[jpn]

Check the System Tray Icon Example. It catches close event and hides the window instead of closing it:

void Window::closeEvent(QCloseEvent *event)
 {
     if (trayIcon->isVisible()) {
         ...
         hide();
         event->ignore();
     }
 }

void Window::closeEvent(QCloseEvent *event)
 {
     if (trayIcon->isVisible()) {
         ...
         hide();
         event->ignore();
     }
 }

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