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++ // Copyright (C) 2017 The Qt Company Ltd.
++ // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only
++
++ #include <QtQml>
++ #include <QtQuick/QQuickWindow>
++ #include <QtGui/QGuiApplication>
++
++ int main(int argc, char *argv[])
++ {
++ QGuiApplication app(argc, argv);
++ QQmlApplicationEngine engine(QUrl("qrc:///sensor_explorer.qml"));
++ QObject *topLevel = engine.rootObjects().value(0);
++ QQuickWindow *window = qobject_cast<QQuickWindow *>(topLevel);
++ if (!window) {
++ qWarning("Error: Your root item has to be a Window.");
++ return -1;
++ }
++ window->show();
++ return app.exec();
++ }