How to get TK widget option to accept variable reference? I need to use this in more than one place and it's not an option to store the button in the hashref as this hashref will be updated by other clients.

use Tk;
$mw = MainWindow->new();
my $system = {};
$system->{blink}->[0] = "disabled";

#works but does not update as value in hashref changes
my $but = $mw->Button(-text=>"Blink Unit", -state=>$system->{blink}->[
+0])->pack();

#does not work as state will not accept variable reference
#my $but = $mw->Button(-text=>"Blink Unit", -state=>\$system->{blink}-
+>[0])->pack();

=pod
*$but->{'Configure'}->{'-state'} = \$system->{blink}->[0]; #overwrite 
+the location of the value??
=cut

[download]

In reply to Tk Button state tied to variable by glenn

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.