gp-port is a symbol (not evaluated).
x
,
y
,
width
,
height
are each integers or
nil
.
to-x
,
to-y
,
to-width
,
to-height
,
from-x
,
from-y
,
from-width
,
from-height
are each integers or
nil
.
background is a graphics ports color specifier.
gp-drawing-func is a function that takes one argument, a gp-port .
pixmap is a graphics port pixmap.
image is a graphics ports BMP image.
Common Lisp Interface Manager 2.0 User's Guide - 7 Aug 2017