close-button

How do I handle the event of the user pressing the ‘X’ (close) button?

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If you have a QMainWindow you can override closeEvent method. #include <QCloseEvent> void MainWindow::closeEvent (QCloseEvent *event) { QMessageBox::StandardButton resBtn = QMessageBox::question( this, APP_NAME, tr(“Are you sure?\n”), QMessageBox::Cancel | QMessageBox::No | QMessageBox::Yes, QMessageBox::Yes); if (resBtn != QMessageBox::Yes) { event->ignore(); } else { event->accept(); } } If you’re subclassing a QDialog, the closeEvent will not be called … Read more