glutLayerGet man page on Darwin

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glutLayerGet(3GLUT)		     GLUT		   glutLayerGet(3GLUT)

NAME
       glutLayerGet  -	retrieves  GLUT	 state pertaining to the layers of the
       current window.

SYNTAX
       #include <GLUT/glut.h>

       int glutLayerGet(GLenum info);

ARGUMENTS
       info	 Name of device information to retrieve.

       GLUT_OVERLAY_POSSIBLE
	       Whether an overlay could be established for the current	window
	       given  the  current  initial display mode. If false, glutEstab‐
	       lishOverlay will fail with a fatal error if called.

       GLUT_LAYER_IN_USE
	       Either GLUT_NORMAL or GLUT_OVERLAY  depending  on  whether  the
	       normal plane or overlay is the layer in use.

       GLUT_HAS_OVERLAY
	       If the current window has an overlay established.

       GLUT_TRANSPARENT_INDEX
	       The  transparent color index of the overlay of the current win‐
	       dow; negative one is returned if no overlay is in use.

       GLUT_NORMAL_DAMAGED
	       True if the normal plane of the current window has damaged  (by
	       window  system  activity)  since	 the last display callback was
	       triggered. Calling glutPostRedisplay will not set this true.

       GLUT_OVERLAY_DAMAGED
	       True if the overlay plane of the current window has damaged (by
	       window  system  activity)  since	 the last display callback was
	       triggered. Calling glutPostRedisplay  or	 glutPostOverlayRedis‐
	       play  will  not	set  this true. Negative one is returned if no
	       overlay is in use.

DESCRIPTION
       glutLayerGet retrieves GLUT layer information for  the  current	window
       represented  by	integers.  The	info parameter determines what type of
       layer information to return.

SEE ALSO
       glutEstablishOverlay, glutUseOverlay, glutCreateWindow, glutSetColor

AUTHOR
       Mark J. Kilgard (mjk@nvidia.com)

GLUT				      3.7		   glutLayerGet(3GLUT)
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