glutLayerGet - Man Page

Allows you to get some overlay state/option variables.

Library

OpenGLUT - overlays

#include <openglut.h>

int
glutLayerGet(GLenum eWhat);

eWhat

Enumerated parameter ID.

Returns some useful information about layers. Or, it would be useful if layers were implemented...

eWhat

may be given any of the following values:

GLUT_HAS_OVERLAY

GLUT_LAYER_IN_USE

GLUT_NORMAL_DAMAGED

0 unless the window system has told us that the normal layer is damaged (glutPostRedisplay() does not affect this).

GLUT_OVERLAY_DAMAGED

-1 if no layer in use.

GLUT_OVERLAY_POSSIBLE

GLUT_TRANSPARENT_INDEX

-1 if no layer in use.

All information relates to the

current window

and any overlay that it may have.