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diff --git a/src/datavisualization/engine/q3dwindow.h b/src/datavisualization/engine/q3dwindow.h
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+++ b/src/datavisualization/engine/q3dwindow.h
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+/****************************************************************************
+**
+** Copyright (C) 2013 Digia Plc
+** All rights reserved.
+** For any questions to Digia, please use contact form at http://qt.digia.com
+**
+** This file is part of the QtDataVisualization module.
+**
+** Licensees holding valid Qt Enterprise licenses may use this file in
+** accordance with the Qt Enterprise License Agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and Digia.
+**
+** If you have questions regarding the use of this file, please use
+** contact form at http://qt.digia.com
+**
+****************************************************************************/
+
+#ifndef Q3DWINDOW_H
+#define Q3DWINDOW_H
+
+#include <QtDataVisualization/qdatavisualizationenums.h>
+
+#include <QWindow>
+#include <QOpenGLFunctions>
+
+class QPainter;
+
+QT_DATAVISUALIZATION_BEGIN_NAMESPACE
+
+class Q3DWindowPrivate;
+
+class QT_DATAVISUALIZATION_EXPORT Q3DWindow : public QWindow, protected QOpenGLFunctions
+{
+    Q_OBJECT
+
+public:
+    explicit Q3DWindow(QWindow *parent = 0);
+    ~Q3DWindow();
+
+protected slots:
+    void renderLater();
+    void renderNow();
+
+protected:
+    virtual void render();
+
+    bool event(QEvent *event);
+    void exposeEvent(QExposeEvent *event);
+
+private:
+    QScopedPointer<Q3DWindowPrivate> d_ptr;
+
+    friend class Q3DBars;
+    friend class Q3DScatter;
+    friend class Q3DSurface;
+};
+
+QT_DATAVISUALIZATION_END_NAMESPACE
+
+#endif