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GLUTOVERLAYDISPLAYFUNC(3) Library Functions Manual (local) GLUTOVERLAYDISPLAYFUNC(3)

NAME

glutOverlayDisplayFuncDefines 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 glutDisplayFunc(), 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)