| Allegro CL version 8.0 This page is new in 8.0. | ||||||||||
Arguments: lamp
Returns or sets (with setf) the color of the argument
lamp when it is off. The value should be a RGB
color object (see make-rgb) or
nil.
If the value is nil, the effective off-color
will be computed automatically from the on-color and the off-color-factor properties, by multiplying the
red, green, and blue components of the on-color by the off-color-factor number. This allows changing
the overall color of the lamp periodically by changing only the
on-color, letting the off-color match it automatically.
When an RGB color, that color is used directly. The default value is
nil.
See the description of the lamp control.
Copyright (c) 1998-2008, Franz Inc. Oakland, CA., USA. All rights reserved.
Documentation for Allegro CL version 8.0. This page is new in the 8.0 release.
Created 2007.4.30.
| Allegro CL version 8.0 This page is new in 8.0. | ||||||||||