[racket] overlay two or more images

From: 김태윤 (kty1104 at gmail.com)
Date: Sat Nov 20 00:44:26 EST 2010

I am trying to overlay two or more images(not in universe)
but I can't make it as transparent
setting brush with transparent option doesn't work

original image's format is png though.
do I have to convert them into bitmap?
or is there any option or something to make it transparent?

thanks in advanced
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.racket-lang.org/users/archive/attachments/20101120/8320e237/attachment.html>

Posted on the users mailing list.