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diff --git a/src/corelib/kernel/qsharedmemory.h b/src/corelib/kernel/qsharedmemory.h
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+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the QtCore 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 either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** 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 1.0, 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.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QSHAREDMEMORY_H
+#define QSHAREDMEMORY_H
+
+#include <QtCore/qobject.h>
+
+QT_BEGIN_HEADER
+
+QT_BEGIN_NAMESPACE
+
+QT_MODULE(Core)
+
+#ifndef QT_NO_SHAREDMEMORY
+
+class QSharedMemoryPrivate;
+
+class Q_CORE_EXPORT QSharedMemory : public QObject
+{
+    Q_OBJECT
+    Q_DECLARE_PRIVATE(QSharedMemory)
+
+public:
+    enum AccessMode
+    {
+        ReadOnly,
+        ReadWrite
+    };
+
+    enum SharedMemoryError
+    {
+        NoError,
+        PermissionDenied,
+        InvalidSize,
+        KeyError,
+        AlreadyExists,
+        NotFound,
+        LockError,
+        OutOfResources,
+        UnknownError
+    };
+
+    QSharedMemory(QObject *parent = 0);
+    QSharedMemory(const QString &key, QObject *parent = 0);
+    ~QSharedMemory();
+
+    void setKey(const QString &key);
+    QString key() const;
+
+    bool create(int size, AccessMode mode = ReadWrite);
+    int size() const;
+
+    bool attach(AccessMode mode = ReadWrite);
+    bool isAttached() const;
+    bool detach();
+
+    void *data();
+    const void* constData() const;
+    const void *data() const;
+
+#ifndef QT_NO_SYSTEMSEMAPHORE
+    bool lock();
+    bool unlock();
+#endif
+
+    SharedMemoryError error() const;
+    QString errorString() const;
+
+private:
+    Q_DISABLE_COPY(QSharedMemory)
+};
+
+#endif // QT_NO_SHAREDMEMORY
+
+QT_END_NAMESPACE
+
+QT_END_HEADER
+
+#endif // QSHAREDMEMORY_H
+