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diff --git a/src/gui/image/qimagepixmapcleanuphooks_p.h b/src/gui/image/qimagepixmapcleanuphooks_p.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.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** 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 QIMAGEPIXMAP_CLEANUPHOOKS_P_H
+#define QIMAGEPIXMAP_CLEANUPHOOKS_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include <QtGui/qpixmap.h>
+
+QT_BEGIN_NAMESPACE
+
+typedef void (*_qt_image_cleanup_hook_64)(qint64);
+typedef void (*_qt_pixmap_cleanup_hook_pmd)(QPixmapData*);
+
+
+class QImagePixmapCleanupHooks;
+
+class Q_GUI_EXPORT QImagePixmapCleanupHooks
+{
+public:
+    static QImagePixmapCleanupHooks *instance();
+
+    static void enableCleanupHooks(const QImage &image);
+    static void enableCleanupHooks(const QPixmap &pixmap);
+    static void enableCleanupHooks(QPixmapData *pixmapData);
+
+    static bool isImageCached(const QImage &image);
+    static bool isPixmapCached(const QPixmap &pixmap);
+
+    // Gets called when a pixmap data is about to be modified:
+    void addPixmapDataModificationHook(_qt_pixmap_cleanup_hook_pmd);
+
+    // Gets called when a pixmap data is about to be destroyed:
+    void addPixmapDataDestructionHook(_qt_pixmap_cleanup_hook_pmd);
+
+    // Gets called when an image is about to be modified or destroyed:
+    void addImageHook(_qt_image_cleanup_hook_64);
+
+    void removePixmapDataModificationHook(_qt_pixmap_cleanup_hook_pmd);
+    void removePixmapDataDestructionHook(_qt_pixmap_cleanup_hook_pmd);
+    void removeImageHook(_qt_image_cleanup_hook_64);
+
+    static void executePixmapDataModificationHooks(QPixmapData*);
+    static void executePixmapDataDestructionHooks(QPixmapData*);
+    static void executeImageHooks(qint64 key);
+
+private:
+    QList<_qt_image_cleanup_hook_64> imageHooks;
+    QList<_qt_pixmap_cleanup_hook_pmd> pixmapModificationHooks;
+    QList<_qt_pixmap_cleanup_hook_pmd> pixmapDestructionHooks;
+};
+
+QT_END_NAMESPACE
+
+#endif // QIMAGEPIXMAP_CLEANUPHOOKS_P_H