Record the errors encountered when writing opengl code using vs:
error: the following is a new check for glut 3.0; Update your code.
after checking for a long time, it is found that this may be the reason why the portal
does not write the callback function of the window
write the callback function yourself
display is the calling function written by yourself, for example:
glutDisplayFunc(DrawOval);//Draw callback function, glut mechanism, it will be executed when it feels the need to redraw
drawOval here is the function I wrote to draw an ellipse
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