Sorry it is taking me so long to look into this. One piece of (not so
useful to you who want an actual solution!) information is that you've
pointed out a security hole in DrRacket that I thought I'd closed, but
apparently have only partly closed. If you run the program below, then
DrRacket itself will exit and that's not supposed to be able to
happen. (The worst a program should be able to do is kill itself, not
kill the whole IDE.)
Fixing this makes both of these ways of printing just as slow as each
other, however. The basic issue is that DrRacket has to "sanitize" the
values that come across and that process involves copying the bitmaps
in your example and there are a lot of them. Since they are all the
same bitmap, however, maybe there's a way to shortcircuit that.
Robby
#lang racket
(require racket/gui/base)
(define s%
(class snip%
(super-new)
(define/override (copy) (new s%))
(define/override (draw . args)
(queue-callback
(λ () '(exit))))))
(new s%)
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