glutOverlayDisplayFunc man page on RedHat

glutOverlayDisplayFunc man page on RedHat

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UNTITLED			     LOCAL			      UNTITLED

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)

				     Epoch

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