[racket] racket/gui: reacting to close window event?

I think you want the on-close and can-close? methods of the frame%.

Robby

On Thu, May 26, 2011 at 4:47 AM, Marijn <hkBst at gentoo.org> wrote:
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> Hi,
>
> I would like to call some code when a user clicks the X in the upper
> left/right corner (close window button) or presses Alt-F4, but I didn't
> find anything about it in the docs. Any help?
>
> Thanks,
>
> Marijn
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