I'm close. How do I validate my entry? I need either 1 or 2 hexadecimal characters. I've got 6 entry widgets, 1 per byte. Each treats it's contents as a string. I'm validating on focusout. So far none of my regex's has worked, the naive version was: 
-validatecommand => sub{$_[0] =~ /\x/},

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Gee, hung up on a regex. Whoodathunk? :)

I've got 1 other problem. The first entry widget doesn't have focus when it starts, I have to hit tab first. How do I fix this?

In reply to Re^4: How to enter a MAC address by snotnose
in thread How to enter a MAC address by snotnose

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