Arguments: pixmap x y value
Sets the value of the specified pixel of the mask texture of a pixmap
by calling contents-set on the
mask texture, and returns the new value. Does nothing and returns
nil if the pixmap has no mask texture. See
contents-setcontents-set for more information.
Note that mask-contents-ref is setf'able and it is recommended you use setf and mask-contents-ref rather than this function.
Common Graphics and IDE documentation is described in About Common Graphics and IDE documentation in cgide.htm.
The documentation is described in introduction.htm and the index is in index.htm.
Copyright (c) 1998-2000, Franz Inc. Berkeley, CA., USA. All rights reserved.
Created 2000.10.5.