The RunOpenGL function is owned by 4 classes inherited from a same parent class. Some RunOpenGL functions have Qt drawing codes, some have only OpenGL codes.
The RunOpenGL is a virtual function, some classes need qt drawing codes.
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Re: Why the drawing cannot be shown when using paintGL() in the QGLWidget?
The RunOpenGL function is owned by 4 classes inherited from a same parent class. Some RunOpenGL functions have Qt drawing codes, some have only OpenGL codes.
The RunOpenGL is a virtual function, some classes need qt drawing codes.
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