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diff --git a/src/plugins/qt7/qcvdisplaylink.h b/src/plugins/qt7/qcvdisplaylink.h
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+/****************************************************************************
+**
+** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the Qt Mobility Components.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** 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 Technology Preview License Agreement accompanying
+** this package.
+**
+** 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 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QCVDISPLAYLINK_H
+#define QCVDISPLAYLINK_H
+
+#include <QtCore/qobject.h>
+#include <QtCore/qmutex.h>
+
+#include <qmobilityglobal.h>
+
+#include <QuartzCore/CVDisplayLink.h>
+
+QT_BEGIN_NAMESPACE
+
+class QCvDisplayLink : public QObject
+{
+Q_OBJECT
+public:
+    QCvDisplayLink(QObject *parent = 0);
+    virtual ~QCvDisplayLink();
+
+    bool isValid();
+    bool isActive() const;
+
+public slots:
+    void start();
+    void stop();
+
+signals:
+    void tick(const CVTimeStamp &ts);
+
+public:
+    void displayLinkEvent(const CVTimeStamp *);
+
+protected:
+    virtual bool event(QEvent *);
+    
+private:
+    CVDisplayLinkRef m_displayLink;
+    QMutex m_displayLinkMutex;
+    bool m_pendingDisplayLinkEvent;
+    bool m_isActive;
+    CVTimeStamp m_frameTimeStamp;
+};
+
+QT_END_NAMESPACE
+
+#endif
+