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diff --git a/examples/widgets/graphicsview/boxes/gltrianglemesh.h b/examples/widgets/graphicsview/boxes/gltrianglemesh.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 demonstration applications 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 GLTRIANGLEMESH_H
+#define GLTRIANGLEMESH_H
+
+//#include <GL/glew.h>
+#include "glextensions.h"
+
+#include <QtWidgets>
+#include <QtOpenGL>
+
+#include "glbuffers.h"
+
+template<class TVertex, class TIndex>
+class GLTriangleMesh
+{
+public:
+    GLTriangleMesh(int vertexCount, int indexCount) : m_vb(vertexCount), m_ib(indexCount)
+    {
+    }
+
+    virtual ~GLTriangleMesh()
+    {
+    }
+
+    virtual void draw()
+    {
+        if (failed())
+            return;
+
+        int type = GL_UNSIGNED_INT;
+        if (sizeof(TIndex) == sizeof(char)) type = GL_UNSIGNED_BYTE;
+        if (sizeof(TIndex) == sizeof(short)) type = GL_UNSIGNED_SHORT;
+
+        m_vb.bind();
+        m_ib.bind();
+        glDrawElements(GL_TRIANGLES, m_ib.length(), type, BUFFER_OFFSET(0));
+        m_vb.unbind();
+        m_ib.unbind();
+    }
+
+    bool failed()
+    {
+        return m_vb.failed() || m_ib.failed();
+    }
+protected:
+    GLVertexBuffer<TVertex> m_vb;
+    GLIndexBuffer<TIndex> m_ib;
+};
+
+
+#endif