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

     /****************************************************************************
     **
     ** Copyright (C) 2005-2007 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
     **
     ** If you are unsure which license is appropriate for your use, please
     ** review the following information:
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     **
     ** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
     ** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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     ****************************************************************************/

     #ifndef GLWIDGET_H
     #define GLWIDGET_H

     #include <QGLWidget>

     class GLWidget : public QGLWidget
     {
         Q_OBJECT

     public:
         GLWidget(QWidget *parent = 0, QGLWidget *shareWidget = 0);
         ~GLWidget();

         QSize minimumSizeHint() const;
         QSize sizeHint() const;
         void rotateBy(int xAngle, int yAngle, int zAngle);
         void setClearColor(const QColor &color);

     signals:
         void clicked();

     protected:
         void initializeGL();
         void paintGL();
         void resizeGL(int width, int height);
         void mousePressEvent(QMouseEvent *event);
         void mouseMoveEvent(QMouseEvent *event);
         void mouseReleaseEvent(QMouseEvent *event);

     private:
         GLuint makeObject();

         QColor clearColor;
         QPoint lastPos;
         int xRot;
         int yRot;
         int zRot;

         static GLuint sharedObject;
         static int refCount;
     };

     #endif