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++ // Copyright (C) 2016 The Qt Company Ltd.
++ // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
++
++ #ifndef MAINWINDOW_H
++ #define MAINWINDOW_H
++
++ #include <QMainWindow>
++
++ QT_BEGIN_NAMESPACE
++ class QTreeView; // forward declarations
++ class QStandardItemModel;
++ class QStandardItem;
++ QT_END_NAMESPACE
++
++
++ class MainWindow : public QMainWindow
++ {
++ Q_OBJECT
++ public:
++ explicit MainWindow(QWidget *parent = nullptr);
++
++ private:
++ QList<QStandardItem *> prepareRow(const QString &first,
++ const QString &second,
++ const QString &third) const;
++
++ QTreeView *treeView;
++ QStandardItemModel *standardModel;
++ };
++
++ #endif // MAINWINDOW_H