You are lucky I happened by..... here is an oldie by grandfather. Searching google and groups.google is your best bet for Tk questions, as most have been answered before. Then ask here, if no previous answer was found. 
#!/usr/bin/perl
use strict;
use warnings;
use Tk;
use Tk::DialogBox;
use Tk::JComboBox;

# example by grandfather of perlmonks.org
# shows how to make the textvariable ref update
# see other example
my $main = MainWindow->new (-title => "Test JComboBox");
EditPlayers ($main);

sub EditPlayers {
    my ($main, $sel) = @_;
    my @ids = qw(Fred Joe Bob);
    my $dlg = $main->DialogBox (-title => "Member Information", -butto
+ns => ["OK", "Cancel"]);
    my $id = $sel || (@ids && $ids[0]) || '';
    my $IDText = $dlg->add (
        'JComboBox',
        -mode => 'readonly',
        -selectcommand => [\&changeEditPlayer, \$id],
        -validate => 'match',
        -textvariable => \$id,
        );
    
    $IDText->form (-left => '%0', -right => '%100', -top => '%0');
    $IDText->configure (-options => \@ids);

    #$IDText->setSelected ($id); # dosn't work
    $IDText->setSelected ($sel || (@ids && $ids[0]) || ''); #works

    return if $dlg->Show (-global) ne 'OK';
}


sub changeEditPlayer {
    my ($id, $widget, $index, $value, $name) = @_;

    return 1 if ! defined $name;
    print "$name\n";
}

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I'm not really a human, but I play one on earth.
Old Perl Programmer Haiku

In reply to Re: how to get selected value of jbrowseEntrycombo box by zentara
in thread how to get selected value of jbrowseEntrycombo box by Anonymous Monk

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