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glwidget.h Example File
^{opengl/framebufferobject/glwidget.h}

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 ** Copyright (C) 2005-2007 Trolltech ASA. All rights reserved.
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 ** This file is part of the example classes of the Qt Toolkit.
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 #include <QtOpenGL>
 #include <QImage>
 #include <QTimeLine>
 #include <QSvgRenderer>

 class GLWidget : public QGLWidget
 {
     Q_OBJECT

 public:
     GLWidget(QWidget *parent);
     ~GLWidget();

     void saveGLState();
     void restoreGLState();

     void paintEvent(QPaintEvent *);
     void mousePressEvent(QMouseEvent *);
     void mouseDoubleClickEvent(QMouseEvent *);
     void mouseMoveEvent(QMouseEvent *);
     void timerEvent(QTimerEvent *);
     void wheelEvent(QWheelEvent *);

 public slots:
     void animate(qreal);
     void animFinished();
     void draw();

 private:
     QPoint anchor;
     float scale;
     float rot_x, rot_y, rot_z;
     GLuint tile_list;
     GLfloat *wave;

     QImage logo;
     QTimeLine *anim;
     QSvgRenderer *svg_renderer;
     QGLFramebufferObject *fbo;
 };