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glutLayerGet(3GLUT)                  GLUT                  glutLayerGet(3GLUT)

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

SYNTAX

       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,
               glutEstablishOverlay 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
               window; 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
               glutPostOverlayRedisplay 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)