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

        /****************************************************************************
        **
        ** Copyright (C) 2005-2005 Trolltech AS. All rights reserved.
        **
        ** This file is part of the documentation 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.
        **
        ****************************************************************************/

        #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