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diff --git a/examples/graphicsview/diagramscene/mainwindow.h b/examples/graphicsview/diagramscene/mainwindow.h
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+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the examples of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain
+** additional rights. These rights are described in the Nokia Qt LGPL
+** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef MAINWINDOW_H
+#define MAINWINDOW_H
+
+#include <QMainWindow>
+
+#include "diagramitem.h"
+
+class DiagramScene;
+
+QT_BEGIN_NAMESPACE
+class QAction;
+class QToolBox;
+class QSpinBox;
+class QComboBox;
+class QFontComboBox;
+class QButtonGroup;
+class QLineEdit;
+class QGraphicsTextItem;
+class QFont;
+class QToolButton;
+class QAbstractButton;
+class QGraphicsView;
+QT_END_NAMESPACE
+
+//! [0]
+class MainWindow : public QMainWindow
+{
+    Q_OBJECT
+
+public:
+   MainWindow();
+
+private slots:
+    void backgroundButtonGroupClicked(QAbstractButton *button);
+    void buttonGroupClicked(int id);
+    void deleteItem();
+    void pointerGroupClicked(int id);
+    void bringToFront();
+    void sendToBack();
+    void itemInserted(DiagramItem *item);
+    void textInserted(QGraphicsTextItem *item);
+    void currentFontChanged(const QFont &font);
+    void fontSizeChanged(const QString &size);
+    void sceneScaleChanged(const QString &scale);
+    void textColorChanged();
+    void itemColorChanged();
+    void lineColorChanged();
+    void textButtonTriggered();
+    void fillButtonTriggered();
+    void lineButtonTriggered();
+    void handleFontChange();
+    void itemSelected(QGraphicsItem *item);
+    void about();
+
+private:
+    void createToolBox();
+    void createActions();
+    void createMenus();
+    void createToolbars();
+    QWidget *createBackgroundCellWidget(const QString &text,
+                                        const QString &image);
+    QWidget *createCellWidget(const QString &text,
+                              DiagramItem::DiagramType type);
+    QMenu *createColorMenu(const char *slot, QColor defaultColor);
+    QIcon createColorToolButtonIcon(const QString &image, QColor color);
+    QIcon createColorIcon(QColor color);
+
+    DiagramScene *scene;
+    QGraphicsView *view;
+
+    QAction *exitAction;
+    QAction *addAction;
+    QAction *deleteAction;
+
+    QAction *toFrontAction;
+    QAction *sendBackAction;
+    QAction *aboutAction;
+
+    QMenu *fileMenu;
+    QMenu *itemMenu;
+    QMenu *aboutMenu;
+
+    QToolBar *textToolBar;
+    QToolBar *editToolBar;
+    QToolBar *colorToolBar;
+    QToolBar *pointerToolbar;
+
+    QComboBox *sceneScaleCombo;
+    QComboBox *itemColorCombo;
+    QComboBox *textColorCombo;
+    QComboBox *fontSizeCombo;
+    QFontComboBox *fontCombo;
+
+    QToolBox *toolBox;
+    QButtonGroup *buttonGroup;
+    QButtonGroup *pointerTypeGroup;
+    QButtonGroup *backgroundButtonGroup;
+    QToolButton *fontColorToolButton;
+    QToolButton *fillColorToolButton;
+    QToolButton *lineColorToolButton;
+    QAction *boldAction;
+    QAction *underlineAction;
+    QAction *italicAction;
+    QAction *textAction;
+    QAction *fillAction;
+    QAction *lineAction;
+};
+//! [0]
+
+#endif