From what I can tell, it comes from ensuring that DrRacket shares the htdp/image (or whatever) namespace with the running program so the structs are the same and DrRacket's default renderer is detecting it. I'm not sure how to replicate it though. (I tried for a bit so I could make #lang frtime work.)
Jay On Thu, Aug 26, 2010 at 11:55 AM, Shriram Krishnamurthi <s...@cs.brown.edu> wrote: > What is the #lang magic that makes > >> (get-image-from-web "http://racket-lang.org/logo.png") > (instantiate (class ...) ...) > > show the image rather than just its constructor? > > Shriram > _________________________________________________ > For list-related administrative tasks: > http://lists.racket-lang.org/listinfo/dev > -- Jay McCarthy <j...@cs.byu.edu> Assistant Professor / Brigham Young University http://teammccarthy.org/jay "The glory of God is Intelligence" - D&C 93 _________________________________________________ For list-related administrative tasks: http://lists.racket-lang.org/listinfo/dev