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diff --git a/demos/callout/view.h b/demos/callout/view.h
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+/****************************************************************************
+**
+** Copyright (C) 2012 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 Qt Commercial Charts Add-on.
+**
+** $QT_BEGIN_LICENSE$
+** Licensees holding valid Qt Commercial licenses may use this file in
+** accordance with the Qt Commercial 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
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef VIEW_H
+#define VIEW_H
+#include <QGraphicsView>
+#include <QChartGlobal>
+
+QTCOMMERCIALCHART_BEGIN_NAMESPACE
+class QChart;
+QTCOMMERCIALCHART_END_NAMESPACE
+
+class QGraphicsScene;
+class QResizeEvent;
+class Callout;
+class QMouseEvent;
+
+QTCOMMERCIALCHART_USE_NAMESPACE
+
+class View: public QGraphicsView
+{
+    Q_OBJECT
+
+public:
+    View(QWidget *parent = 0);
+
+protected:
+    void resizeEvent(QResizeEvent *event);
+    void mouseMoveEvent(QMouseEvent *event);
+
+public slots:
+    void keepCallout();
+    void tooltip(QPointF point, bool state);
+
+private:
+    QGraphicsSimpleTextItem *m_coordX;
+    QGraphicsSimpleTextItem *m_coordY;
+    QChart *m_chart;
+    Callout *m_tooltip;
+};
+
+#endif