installscript.js Example File

 /* Copyright (C) 2026 The Qt Company Ltd.
  *
  * SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
 */

 function Component()
 {
     var result = QMessageBox["question"]("test.quit", "Installer", "Do you want to quit the installer?<br>" +
         "This message box was created using JavaScript.", QMessageBox.Ok | QMessageBox.Cancel);
     if (result == QMessageBox.Ok) {
         installer.setValue("FinishedText", "<font color='red' size=3>The installer was quit.</font>");
         installer.setDefaultPageVisible(QInstaller.TargetDirectory, false);
         installer.setDefaultPageVisible(QInstaller.ReadyForInstallation, false);
         installer.setDefaultPageVisible(QInstaller.ComponentSelection, false);
         installer.setDefaultPageVisible(QInstaller.StartMenuSelection, false);
         installer.setDefaultPageVisible(QInstaller.PerformInstallation, false);
         installer.setDefaultPageVisible(QInstaller.LicenseCheck, false);
         gui.clickButton(buttons.NextButton);
     } else {
         installer.setValue("FinishedText",
             "<font color='green' size=3>The installer was not quit by JavaScript.</font>");
     }
 }