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diff --git a/examples/datavisualization/qmloscilloscope/datasource.h b/examples/datavisualization/qmloscilloscope/datasource.h
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+/****************************************************************************
+**
+** Copyright (C) 2014 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 DATASOURCE_H
+#define DATASOURCE_H
+
+#include <QtDataVisualization>
+#include <QObject>
+
+class QQuickView;
+
+using namespace QtDataVisualization;
+
+class DataSource : public QObject
+{
+    Q_OBJECT
+public:
+    explicit DataSource(QObject *parent = 0);
+    virtual ~DataSource();
+
+    //! [0]
+public slots:
+    void generateData(int cacheCount, int rowCount, int columnCount,
+                      float xMin, float xMax, float yMin, float yMax, float zMin, float zMax);
+
+    void update(QSurface3DSeries *series);
+
+    QString selectionLabel(QSurface3DSeries *series, QValue3DAxis *axisX,
+                           QValue3DAxis *axisY, QValue3DAxis *axisZ);
+    //! [0]
+private:
+    void clearData();
+
+    QVector<QSurfaceDataArray> m_data;
+    int m_index;
+    QSurfaceDataArray *m_resetArray;
+};
+
+#endif