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++ // Copyright (C) 2023 The Qt Company Ltd.
++ // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
++
++ #include "bargraph.h"
++ #include "scattergraph.h"
++ #include "surfacegraph.h"
++
++ #include <QtWidgets/qapplication.h>
++ #include <QtWidgets/qmessagebox.h>
++ #include <QtWidgets/qwidget.h>
++ #include <QtWidgets/qtabwidget.h>
++ #include <QtGui/qscreen.h>
++
++ using namespace Qt::StringLiterals;
++
++ int main(int argc, char **argv)
++ {
++ qputenv("QSG_RHI_BACKEND", "opengl");
++
++ QApplication app(argc, argv);
++
++ // Create a tab widget for creating own tabs for Q3DBars, Q3DScatter, and Q3DSurface
++ QTabWidget tabWidget;
++ tabWidget.setWindowTitle(u"Graph Gallery"_s);
++
++ const QSize screenSize = tabWidget.screen()->size();
++ const QSize minimumGraphSize{screenSize.width() / 2, qRound(screenSize.height() / 1.75)};
++
++ // Create bar graph
++ BarGraph bars;
++ // Create scatter graph
++ ScatterGraph scatter;
++ // Create surface graph
++ SurfaceGraph surface;
++
++ if (!bars.initialize(minimumGraphSize, screenSize)
++ || !scatter.initialize(minimumGraphSize, screenSize)
++ || !surface.initialize(minimumGraphSize, screenSize)) {
++ QMessageBox::warning(nullptr, u"Graph Gallery"_s, u"Couldn't initialize the OpenGL context."_s);
++ return -1;
++ }
++
++ // Add bars widget
++ tabWidget.addTab(bars.barsWidget(), u"Bar Graph"_s);
++ // Add scatter widget
++ tabWidget.addTab(scatter.scatterWidget(), u"Scatter Graph"_s);
++ // Add surface widget
++ tabWidget.addTab(surface.surfaceWidget(), u"Surface Graph"_s);
++
++ tabWidget.show();
++ return app.exec();
++ }