[racket] overlay two or more images

From: Robby Findler (robby at eecs.northwestern.edu)
Date: Sat Nov 20 08:15:10 EST 2010

In the as yet unreleased version you should use make-bitmap to make
the bitmap and probably everything will just work.

If you're stuck with the release, then you want to make the bitmap%
with the 'png/mask probably and then when you call draw-bitmap you
have to supply the mask bitmap as an explicit argument.


On Fri, Nov 19, 2010 at 11:44 PM, 김태윤 <kty1104 at gmail.com> wrote:
> hello
> 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
> _________________________________________________
>  For list-related administrative tasks:
>  http://lists.racket-lang.org/listinfo/users

Posted on the users mailing list.