Hello, I am a beginner in PyQt. My first task is to build a QGraphicsView and apply a QGLWidget to control its viewport.
The problem is that I want to update the buffers externally, which is to say, setAutoBufferSwap(False) ahead. And each time when the view is changed, the buffer is swapped under my own control. I have tried many different ways, but none worked. Timer and EventLoops are not desired, since I want to control the time precisely, not affected by other events, such as mouse or keyboard. I guess the painter to the QGLWidget is destructed before the swapBuffers() is called. But I don't know where it occurs and how to set it externally. Any help or suggestion will be appreciated. Thanks ahead.
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