Hi snotnose,

Here's something to get you started ...

use strict; use warnings; use Tk; my $mac_addr = ""; my $mw = new MainWindow(-title => 'Enter a MAC address'); my $fr = $mw->Frame()->pack(-expand => 1, -fill => 'both'); my $lb = $fr->Label(-text => "Enter MAC address ")->pack(-side => 'lef +t'); my $en = $fr->Entry(-textvar => \$mac_addr)->pack(-side => 'left'); my $bt = $fr->Button(-text => 'Validate', -background => 'green'); $bt->configure(-command => sub { validate() }); $bt->pack(-side => 'left'); MainLoop; sub validate { my $valid = '[0-9a-f]' x 2; if ($mac_addr =~ /($valid:){5}$valid/i) { print "Address '$mac_addr' is VALID\n"; } else { print "Address '$mac_addr' is INVALID\n"; } }

Does that help you?


s''(q.S:$/9=(T1';s;(..)(..);$..=substr+crypt($1,$2),2,3;eg;print$..$/

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

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":



  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.