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# glwidget.h Example File
opengl/2dpainting/glwidget.h

     /****************************************************************************
     **
     ** Copyright (C) 2006-$THISYEAR$ $TROLLTECH$. All rights reserved.
     **
     ** This file is part of the $MODULE$ of the Qt Toolkit.
     **
     ** $TROLLTECH_DUAL_LICENSE$
     **
     ** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
     ** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
     **
     ****************************************************************************/

     #ifndef GLWIDGET_H
     #define GLWIDGET_H

     #include <QGLWidget>

     class Helper;
     class QPaintEvent;
     class QWidget;

     class GLWidget : public QGLWidget
     {
         Q_OBJECT

     public:
         GLWidget(Helper *helper, QWidget *parent);

     public slots:
         void animate();

     protected:
         void paintEvent(QPaintEvent *event);

     private:
         Helper *helper;
         int elapsed;
     };

     #endif