[racket] Cannot minimize a window frame%

Can you provide an example? The `iconize' method of `frame%' seems to
work for me on Windows, and I'm not sure what else to try.

At Mon, 18 Jun 2012 17:39:24 -0600, Kieron Hardy wrote:
> Hi all,
> 
> I have a GUI with a couple of frame% windows, and I cannot minimize them.
> 
> Overriding on-activate and printing a message, shows that frame% attempts
> to minimize at first (i.e. on-activate is called with activate? value #f) -
> but then immediately gets re-activated (i.e. on-activate is recalled with
> active? value #t) and then any further attempts just show on-activate only
> called with active? value #t.
> 
> I probably doing something dumb but can't figure it out. Anyone have an
> idea about what might be going on?
> 
> Cheers,
> 
> Kieron.
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