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# glwidget.h Example File
opengl/pbuffers/glwidget.h

     /****************************************************************************
     **
     ** Copyright (C) 2005-2006 Trolltech ASA. All rights reserved.
     **
     ** This file is part of the example classes of the Qt Toolkit.
     **
     ** This file may be used under the terms of the GNU General Public
     ** License version 2.0 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 GNU
     ** General Public Licensing requirements will be met:
     ** http://www.trolltech.com/products/qt/opensource.html
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     ** If you are unsure which license is appropriate for your use, please
     ** review the following information:
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     ** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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     #include <QtOpenGL>

     class GLWidget : public QGLWidget
     {
     public:
         GLWidget(QWidget *parent);
         ~GLWidget();
         void initializeGL();
         void resizeGL(int w, int h);
         void paintGL();
         void timerEvent(QTimerEvent *) { update(); }
         void mousePressEvent(QMouseEvent *) { killTimer(timerId); }
         void mouseReleaseEvent(QMouseEvent *) { timerId = startTimer(20); }

         void drawCube(int i, GLfloat z, GLfloat ri, GLfloat jmp, GLfloat amp);
         void initCommon();
         void initPbuffer();

     private:
         GLfloat rot[3], xOffs[3], yOffs[3], xInc[3];
         GLuint pbufferList;
         GLuint dynamicTexture;
         GLuint cubeTexture;
         int timerId;

         QGLPixelBuffer *pbuffer;
     };