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diff --git a/examples/gui/openglwindow/openglwindow.h b/examples/gui/openglwindow/openglwindow.h
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+++ b/examples/gui/openglwindow/openglwindow.h
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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 documentation of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:BSD$
+** You may use this file under the terms of the BSD license as follows:
+**
+** "Redistribution and use in source and binary forms, with or without
+** modification, are permitted provided that the following conditions are
+** met:
+**   * Redistributions of source code must retain the above copyright
+**     notice, this list of conditions and the following disclaimer.
+**   * Redistributions in binary form must reproduce the above copyright
+**     notice, this list of conditions and the following disclaimer in
+**     the documentation and/or other materials provided with the
+**     distribution.
+**   * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor
+**     the names of its contributors may be used to endorse or promote
+**     products derived from this software without specific prior written
+**     permission.
+**
+** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <QtGui/QWindow>
+#include <QtGui/QOpenGLFunctions>
+
+QT_BEGIN_NAMESPACE
+class QPainter;
+class QOpenGLContext;
+class QOpenGLPaintDevice;
+QT_END_NAMESPACE
+
+//! [1]
+class OpenGLWindow : public QWindow, protected QOpenGLFunctions
+{
+    Q_OBJECT
+public:
+    explicit OpenGLWindow(QWindow *parent = 0);
+    ~OpenGLWindow();
+
+    virtual void render(QPainter *painter);
+    virtual void render();
+
+    virtual void initialize();
+
+    void setAnimating(bool animating);
+
+public slots:
+    void renderLater();
+    void renderNow();
+
+protected:
+    bool event(QEvent *event);
+
+    void exposeEvent(QExposeEvent *event);
+    void resizeEvent(QResizeEvent *event);
+
+private:
+    bool m_update_pending;
+    bool m_animating;
+
+    QOpenGLContext *m_context;
+    QOpenGLPaintDevice *m_device;
+};
+//! [1]
+