centos man page for glutoverlaydisplayfunc

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NAME
     glutOverlayDisplayFunc -- Defines the display hook for an overlay.

LIBRARY
     OpenGLUT - windowcallback

SYNOPSIS
     #include <openglut.h>

     void
     glutOverlayDisplayFunc(void( *callback )( void ));

PARAMETERS
      callback	   Client hook for overlay redisplay.

DESCRIPTION
      callback	is invoked by OpenGLUT to refresh an overlay, if OpenGLUT thinks that this is necessary.  Generally, very similar to glutDisplay-
     Func(), save that:

      - The redisplay is triggered differently.
      - OpenGLUT sets the layer for you.
      - You do not need to have, and can deregister, this callback.

     This callback is bound to	both  the  current window   and the  layer  .

BUGS
     OpenGLUT does not implement layers at this time.

SEE ALSO
     glutDisplayFunc(3) glutPostOverlayRedisplay(3) glutEstablishOverlay(3) glutUseLayer(3)

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