glutuselayer(3) centos man page | unix.com

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NAME
     glutUseLayer -- Allows you to switch between normal and layer mode.

LIBRARY
     OpenGLUT - overlays

SYNOPSIS
     #include <openglut.h>

     void
     glutUseLayer(GLenum layer);

PARAMETERS
      layer	Whether to be in a layer or in the normal window.

DESCRIPTION
     By default, OpenGLUT operates in "normal" mode, with respect to layers.  If you have a layer open and wish to operate on the layer, you must
     use glutUseLayer().

      layer  can take on the following values, indicating the layer mode to use:

      -  GLUT_NORMAL
      -  GLUT_LAYER

CAVEATS
     Unimplemented.

     It is unclear what the consequences are if you are in  GLUT_OVERLAY  mode and switch to another (or the same) window via glutSetWindow().
     What if the target has a layer?  What if it doesn't?

SEE ALSO
     glutEstablishOverlay(3) glutRemoveOverlay(3) glutPostOverlayRedisplay(3) glutPostWindowOverlayRedisplay(3) glutShowOverlay(3)
     glutHideOverlay(3)

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