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diff --git a/src/gui/kernel/qplatformscreenpageflipper.cpp b/src/gui/kernel/qplatformscreenpageflipper.cpp
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+++ b/src/gui/kernel/qplatformscreenpageflipper.cpp
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+/****************************************************************************
+**
+** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/
+**
+** This file is part of the QtGui module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** GNU Lesser General Public License Usage
+** 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.
+**
+** 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.
+**
+** Other Usage
+** Alternatively, this file may be used in accordance with the terms and
+** conditions contained in a signed written agreement between you and Nokia.
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qplatformscreenpageflipper.h"
+
+QT_BEGIN_NAMESPACE
+
+/*!
+    \class QPlatformScreenBuffer
+    \since 5.0
+    \internal
+    \preliminary
+    \ingroup qpa
+
+    \brief The QPlatformScreenBuffer class provides an abstraction for screen buffers.
+ */
+QPlatformScreenBuffer::QPlatformScreenBuffer()
+    : m_destroyed(false)
+    , m_ready(true)
+{
+
+}
+
+QPlatformScreenBuffer::~QPlatformScreenBuffer()
+{
+
+}
+
+bool QPlatformScreenBuffer::isDestroyed() const
+{
+    return m_destroyed;
+}
+
+bool QPlatformScreenBuffer::isReady() const
+{
+    return m_ready;
+}
+
+void QPlatformScreenBuffer::aboutToBeDisplayed()
+{
+}
+
+void QPlatformScreenBuffer::displayed()
+{
+}
+
+
+/*!
+    \class QPlatformScreenPageFlipper
+    \since 5.0
+    \internal
+    \preliminary
+    \ingroup qpa
+
+    \brief The QPlatformScreenPageFlipper class provides an abstraction for flipping the screen
+    page.
+ */
+
+QPlatformScreenPageFlipper::QPlatformScreenPageFlipper(QObject *parent)
+    :QObject(parent)
+{
+
+}
+
+QT_END_NAMESPACE
+