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++ // Copyright (C) 2023 The Qt Company Ltd.
++ // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
++
++ //! [0]
++ #include <QtDataVisualization/qutils.h>
++ //! [0]
++
++ #include <QtGui/qguiapplication.h>
++ #include <QtQuick/qquickview.h>
++ #include <QtQml/qqmlengine.h>
++
++ #ifdef QMAKE_BUILD
++ #include "datasource.h"
++ #endif
++
++ using namespace Qt::StringLiterals;
++
++ int main(int argc, char *argv[])
++ {
++ qputenv("QSG_RHI_BACKEND", "opengl");
++ QGuiApplication app(argc, argv);
++
++ #ifdef QMAKE_BUILD
++ qmlRegisterType<DataSource>("SurfaceGallery", 1, 0, "DataSource");
++ #endif
++
++ QQuickView viewer;
++
++ //! [1]
++ // Enable antialiasing in direct rendering mode
++ viewer.setFormat(qDefaultSurfaceFormat(true));
++ //! [1]
++
++ // The following are needed to make examples run without having to install the module
++ // in desktop environments.
++ #ifdef Q_OS_WIN
++ QString extraImportPath(u"%1/../../../../%2"_s);
++ #else
++ QString extraImportPath(u"%1/../../../%2"_s);
++ #endif
++ viewer.engine()->addImportPath(extraImportPath.arg(QGuiApplication::applicationDirPath(),
++ u"qml"_s));
++ QObject::connect(viewer.engine(), &QQmlEngine::quit, &viewer, &QWindow::close);
++
++ viewer.setTitle(u"Surface Graph Gallery"_s);
++
++ viewer.setSource(QUrl(u"qrc:/qml/qmlsurfacegallery/main.qml"_s));
++ viewer.setResizeMode(QQuickView::SizeRootObjectToView);
++ viewer.show();
++
++ return app.exec();
++ }