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| /*! |
| \example hellogl2 |
| \title Hello GL2 Example |
| \ingroup examples-widgets-opengl |
| |
| \brief The Hello GL2 example demonstrates the basic use of the OpenGL-related classes |
| provided with Qt. |
| |
| \image hellogl2-example.png |
| |
| Qt provides the QOpenGLWidget class to enable OpenGL graphics to be rendered |
| within a standard application user interface. By subclassing this class, and |
| providing reimplementations of event handler functions, 3D scenes can be |
| displayed on widgets that can be placed in layouts, connected to other |
| objects using signals and slots, and manipulated like any other widget. |
| */ |