(Oh, and one of those modules is the place where you set current-print.) Robby
On Sat, Aug 28, 2010 at 9:18 PM, Robby Findler <ro...@eecs.northwestern.edu> wrote: > And sorry: here's a keyword: read-language. You'll want to set up your > language so that it can answer those queries. Then drracket will call > the info proc with 'configure-runtime. I could have sworn that was > documented somewhere, but I'm not finding it (I think that must be a > bug in searching or the entry got lost or something). In any case > drracket usees it like this: > > (let ([configs (get-info 'configure-runtime '())]) > (for ([config (in-list configs)]) > ((dynamic-require (vector-ref config 0) > (vector-ref config 1)) > (vector-ref config 2)))))))) > > where get-info comes from read-language. > > And yes, this is on my list to add to the guide-like docs in the tools manual. > > hth, > Robby > > On Sat, Aug 28, 2010 at 8:49 PM, Robby Findler > <ro...@eecs.northwestern.edu> wrote: >> Did you forget what I explained at PLT day? You don't seem to be >> asking questions in terms of those things, so I'm not sure whether >> what I say is getting thru at all. >> >> Robby >> >> On Sat, Aug 28, 2010 at 8:47 PM, Shriram Krishnamurthi <s...@cs.brown.edu> >> wrote: >>> ... which was my original question. But thanks. >>> >>> On Sat, Aug 28, 2010 at 9:36 PM, Robby Findler >>> <ro...@eecs.northwestern.edu> wrote: >>>> I guess you don't have the print handler set up right. >>>> >>>> On Sat, Aug 28, 2010 at 8:23 PM, Shriram Krishnamurthi <s...@cs.brown.edu> >>>> wrote: >>>>> The value I was returning is whatever kind of object is returned when >>>>> you embed an image in the Definitions window. That is, this was a >>>>> pasted, atomic image, not one created by a computation. I guess >>>>> they're not treated the same, but I'm surprised that ASL processing >>>>> the Definitions window didn't do the right conversion... >>>>> >>>>> On Thu, Aug 26, 2010 at 8:25 PM, Robby Findler >>>>> <ro...@eecs.northwestern.edu> wrote: >>>>>> At the moment there is a barn-door sized security hole in DrRacket, >>>>>> whereby it will take any snip% instance from the user's program and >>>>>> just display it in the repl. You can exploit this for Good by making >>>>>> the current-print of your language turn some values into snips (like >>>>>> images and things). 2htdp/image already does this, so that should just >>>>>> work if you return those. Its hard to tell what value Shriram's >>>>>> program was returning tho. But if it is a bitmap% object, he just has >>>>>> to do >>>>>> >>>>>> (make-object image-snip% ...the-bitmap-goes-here...) >>>>>> >>>>>> We will close this hole at some point, when we have a reasonable way >>>>>> to allow people to add new kinds of values without the security >>>>>> breach. >>>>>> >>>>>> Robby >>>>>> >>>>>> On Thu, Aug 26, 2010 at 6:17 PM, Jay McCarthy <jay.mccar...@gmail.com> >>>>>> wrote: >>>>>>> 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 >>>>>> >>>>> >>>> _________________________________________________ >>>> For list-related administrative tasks: >>>> http://lists.racket-lang.org/listinfo/dev >>> >> > _________________________________________________ For list-related administrative tasks: http://lists.racket-lang.org/listinfo/dev