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++ // Copyright (C) 2022 The Qt Company Ltd.
++ // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
++
++ #include "mainwindow.h"
++ #include <QApplication>
++ #include <QMenuBar>
++ #include "glwidget.h"
++
++ MainWindow::MainWindow()
++ {
++ GLWidget *glwidget = new GLWidget(qRgb(20, 20, 50));
++ setCentralWidget(glwidget);
++
++ QMenu *screenShotMenu = menuBar()->addMenu("&Screenshot");
++ screenShotMenu->addAction("Left buffer", this, [glwidget](){
++ glwidget->saveImage(QOpenGLWidget::LeftBuffer);
++ });
++
++ screenShotMenu->addAction("Right buffer", this, [glwidget](){
++ glwidget->saveImage(QOpenGLWidget::RightBuffer);
++ });
++
++ QMenu *helpMenu = menuBar()->addMenu("&Help");
++ helpMenu->addAction("About Qt", qApp, &QApplication::aboutQt);
++ }