GLUTOVERLAYDISPLAYFUNC

Section: C Library Functions (3)
Updated: LOCAL
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NAME

glutOverlayDisplayFunc - Defines the display hook for an overlay.

LIBRARY

OpenGLUT - windowcallback

SYNOPSIS

In openglut.h Ft void Fn glutOverlayDisplayFunc void( *callback )( void )

PARAMETERS

Bf Em
callback Ef
Client hook for overlay redisplay.

DESCRIPTION

Bf Sy
callback Ef
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 Bf Em
both Ef
the Bf Li
current window Ef
and the Bf Li
layer Ef
.

BUGS

OpenGLUT does not implement layers at this time.