Hi jinnicky,

Another alternative which seems to work is to change -variable to -textvar: 


#!/usr/bin/perl -w

use strict;
use warnings;
use feature qw{ say };
use Tk;
use Tk::Optionbox;

my $default_vsel = "Amazon";

my @options = (
    'option1',
    'option2',
    $default_vsel,
    'option4',
);

my $mw           = Tk::MainWindow->new(-title => 'Tk::Optionbox exampl
+e');
my $vsel         = $default_vsel;
my $variableFont = 'Arial';
my $newTop       = $mw->Frame->pack(-expand => 1, -fill => 'x');

my $selectVendor = $newTop->Optionbox(
                     -command  => \&select_vendor,
                     -textvar  => \$vsel,
                     -font     => $variableFont,
                     -options  => [@options],
                     -rows     => 15,
                   )->pack(-side=>'left');

Tk->MainLoop;


sub select_vendor {
    my $vendor = shift;
    say "Vendor is '$vendor'";
}

[download]
say  substr+lc crypt(qw $i3 SI$),4,5

In reply to Re: Tk::Optionbox default by golux
in thread Tk::Optionbox default [Solved] by jinnicky

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.