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++ // Copyright (C) 2017 The Qt Company Ltd.
++ // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
++
++ #include <QApplication>
++ #include <QCommandLineParser>
++ #include <QCommandLineOption>
++
++ #include "mainwindow.h"
++
++ int main(int argc, char **argv)
++ {
++ QApplication app(argc, argv);
++
++ // this example and QQuickWidget are only functional when rendering with OpenGL
++ QQuickWindow::setGraphicsApi(QSGRendererInterface::OpenGL);
++
++ QCoreApplication::setApplicationName("Qt QQuickView/QQuickWidget Comparison Example");
++ QCoreApplication::setOrganizationName("QtProject");
++ QCoreApplication::setApplicationVersion(QT_VERSION_STR);
++ QCommandLineParser parser;
++ parser.setApplicationDescription(QCoreApplication::applicationName());
++ parser.addHelpOption();
++ parser.addVersionOption();
++ QCommandLineOption noRenderAlphaOption("no-render-alpha", "Do not render Alpha");
++ parser.addOption(noRenderAlphaOption);
++ QCommandLineOption transparentOption("transparent", "Transparent window");
++ parser.addOption(transparentOption);
++
++ parser.process(app);
++
++ const bool transparency = parser.isSet(transparentOption);
++ MainWindow widgetWindow(transparency, parser.isSet(noRenderAlphaOption));
++ if (transparency) {
++ widgetWindow.setAttribute(Qt::WA_TranslucentBackground);
++ widgetWindow.setAttribute(Qt::WA_NoSystemBackground, false);
++ }
++
++ widgetWindow.resize(1024, 768);
++ widgetWindow.show();
++
++ return app.exec();
++ }