glwindow.h Example File

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 #ifndef GLWINDOW_H
 #define GLWINDOW_H

 #include <GLES/gl.h>

 #include <QOpenGLContext>
 #include <QWindow>
 #include <QTime>

 class GLWindow : public QWindow {
     Q_OBJECT
 public:
     GLWindow();
     ~GLWindow();

 protected slots:
     void paintGL();
     void initializeGL();

 private:
     qreal   m_fAngle;
     qreal   m_fScale;
     QOpenGLContext *m_context;
     void paintQtLogo();
     void createGeometry();
     void quad(qreal x1, qreal y1, qreal x2, qreal y2, qreal x3, qreal y3, qreal x4, qreal y4);
     void extrude(qreal x1, qreal y1, qreal x2, qreal y2);
     QList<qreal> vertices;
     QList<qreal> normals;
     GLfloat *createdVertices;
     GLfloat *createdNormals;
     int m_vertexNumber;
     bool qtLogo;
     int frames;
     QTime time;
 };

 #endif