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diff --git a/src/gui/painting/qbackingstore.h b/src/gui/painting/qbackingstore.h
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+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** 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.
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QBACKINGSTORE_H
+#define QBACKINGSTORE_H
+
+#include <QtCore/qrect.h>
+
+#include <QtGui/qwindow.h>
+#include <QtGui/qregion.h>
+
+QT_BEGIN_NAMESPACE
+
+class QRegion;
+class QRect;
+class QPoint;
+class QImage;
+class QBackingStorePrivate;
+class QPlatformBackingStore;
+
+class Q_GUI_EXPORT QBackingStore
+{
+public:
+    QBackingStore(QWindow *window);
+    ~QBackingStore();
+
+    QWindow *window() const;
+
+    QPaintDevice *paintDevice();
+
+    // 'window' can be a child window, in which case 'region' is in child window coordinates and
+    // offset is the (child) window's offset in relation to the window surface.
+    void flush(const QRegion &region, QWindow *window = 0, const QPoint &offset = QPoint());
+
+    void resize(const QSize &size);
+    QSize size() const;
+
+    bool scroll(const QRegion &area, int dx, int dy);
+
+    void beginPaint(const QRegion &);
+    void endPaint();
+
+    void setStaticContents(const QRegion &region);
+    QRegion staticContents() const;
+    bool hasStaticContents() const;
+
+    QPlatformBackingStore *handle() const;
+
+private:
+    QScopedPointer<QBackingStorePrivate> d_ptr;
+};
+
+QT_END_NAMESPACE
+
+#endif // QBACKINGSTORE_H