I can confirm the behavior, which is visible under both *SL and Racket and all
methods for creating executable.
For a workaround, use this for now:
#lang racket/gui
(require 2htdp/universe 2htdp/image)
(define (render ws) ws)
(define (halt ws) #t)
(big-bang (rectangle 600 400 'solid 'gold)
(to-draw render)
(stop-when halt render))
(yield (make-semaphore))
-- Matthias
On Aug 4, 2014, at 11:39 AM, Kevin Forchione <[email protected]> wrote:
> When you run big-bang in Dr Racket and the stop-when evaluates true the
> window remains open to display the final image (when specified) and must be
> manually closed by the user. However, running the racket executable created
> for distribution closes the window and returns you to terminal as soon as
> stop-when is returns true, thus bringing the execution to a jarring halt
> without adequately displaying the final image (it’s hard to tell whether it
> displays because the action is so quick). This appears to be the case for
> both Windows and Mac installers. Is this a bug or how the process is designed
> to work?
>
> Below is a link to some very basic racket code and a mac installer to
> demonstrate the effect:
>
> https://dl.dropboxusercontent.com/u/4859392/test5.rkt
>
> https://dl.dropboxusercontent.com/u/4859392/test5.dmg
>
> If this is how it’s designed to work, then stop-when, for executable
> distribution is probably not a desired handler for what I’m intending, as I
> seldom want the window to close automatically when big-bang terminates, but
> would prefer the user to close the window manually. I can probably achieve
> this with some finagling of the world state, but the two different behaviors
> between Dr Racket and distribution was surprising.
>
> —Kevin
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