The way the rackunit tool does it (to make the rackunit gui
DrRacket-aware) is to attach a module into the user namespace on every
execution by overriding the 'reset-console' method of
drracket:rep:text%. See rackunit/tool.rkt for the code.
Then you can have a module/teachpack that just requires the attached module.
Ryan
On 09/10/2010 01:21 PM, John Clements wrote:
Seems like a FAQ, but:
I want to associate a single "sound player" with a drscheme process. When
student code runs, it needs to send messages to that sound player. I want to make sure
there's only one running at a time.
The first thing that pops into my head is some kind of "shared-require" form,
but I don't see such a thing.
The second thing that pops into my head is a tool; I understand how I can set
up a tool so that it gets run only once at startup, and creates a value that
gets associated with every DrRacket frame. Unfortunately, I can't figure out
the second part of the equation: how does a user program then connect to the
DrRacket frame to get the value? I don't want to make the user click some extra
button every time they run their program, and I *really* don't want to mess
around with language levels and manipulating the user's source code.
Basically, I just want a process-level global value. I must be missing
something really obvious, here.
Thanks,
John
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