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From: sokobania.01@gmail.com
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Subject: Re: easy customization? I don't think so
Date: Tue, 16 Sep 2014 08:27:39 -0700 (PDT)
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I'm not enough english fluent to totally understand what you mean...

Are you blind and asking to know if the current point is over a
button?

Something like: (get-char-property (point) 'button) should do it.