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diff --git a/src/opengl/qglcolormap.h b/src/opengl/qglcolormap.h
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+++ b/src/opengl/qglcolormap.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 QtOpenGL 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 QGLCOLORMAP_H
+#define QGLCOLORMAP_H
+
+#include <QtGui/qcolor.h>
+#include <QtCore/qvector.h>
+
+QT_BEGIN_HEADER
+
+QT_BEGIN_NAMESPACE
+
+QT_MODULE(OpenGL)
+
+class Q_OPENGL_EXPORT QGLColormap
+{
+public:
+    QGLColormap();
+    QGLColormap(const QGLColormap &);
+    ~QGLColormap();
+
+    QGLColormap &operator=(const QGLColormap &);
+
+    bool   isEmpty() const;
+    int    size() const;
+    void   detach();
+
+    void   setEntries(int count, const QRgb * colors, int base = 0);
+    void   setEntry(int idx, QRgb color);
+    void   setEntry(int idx, const QColor & color);
+    QRgb   entryRgb(int idx) const;
+    QColor entryColor(int idx) const;
+    int    find(QRgb color) const;
+    int    findNearest(QRgb color) const;
+
+protected:
+    Qt::HANDLE handle() { return d ? d->cmapHandle : 0; }
+    void setHandle(Qt::HANDLE ahandle) { d->cmapHandle = ahandle; }
+
+private:
+    struct QGLColormapData {
+        QBasicAtomicInt ref;
+        QVector<QRgb> *cells;
+        Qt::HANDLE cmapHandle;
+    };
+
+    QGLColormapData *d;
+    static struct QGLColormapData shared_null;
+    static void cleanup(QGLColormapData *x);
+    void detach_helper();
+
+    friend class QGLWidget;
+    friend class QGLWidgetPrivate;
+};
+
+inline void QGLColormap::detach()
+{
+    if (d->ref != 1)
+        detach_helper();
+}
+
+QT_END_NAMESPACE
+
+QT_END_HEADER
+
+#endif // QGLCOLORMAP_H