[racket] Notification when window is closed

No, this second call to Run does the equivalent of 'force quit' on the
previous program, which is what closes the old windows. Technically,
it is calling custodian-shutdown-all on a custodian that controls all
things the previous run created.

Is there some external state that isn't getting cleaned up?

Robby

On Sun, Aug 5, 2012 at 2:20 AM, Antonio Menezes Leitao
<antonio.menezes.leitao at ist.utl.pt> wrote:
> Hi,
>
> Whenever the user clicks the 'Run' button in DrRacket,
> all frames created by a previous run are closed.  Can we
> be notified about that?
>
> I tried augmenting on-close but it doesn't seem to be called
> when the 'Run' button is clicked (although it is called when
> the user clicks on the frame's close button).
>
> Any suggestions?
>
> Best regards,
> Antonio.
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