Re: defmethod with multiple parameters

I made a mistake in my first post. I didn't notice that your call to
(set-background IMAGE)
worked correctly. Anyway, I think creating an optional argument will
still solve your problem. Something like this:

(defmethod combine (x y &optional (z 255))
(list x y z))
(combine 1 2 3) --> (1 2 3)
(combine 1 2) --> (1 2 255)

I don't know how to specify both a default value and a type
specification, though. Another possibility is to use (z integer),
accept the default value of z=nil, and add (if (null z) (setf z 255))
to the beginning of the method.

Good luck.

.

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