Here is the result of some code I've just written to use in a program I'm writing - mostly a standard file or directory selector. Unfortunately it doesn't do multiple file selection, but you may get something out of it. Enjoy!

#!/usr/local/bin/perl
use Tk;
use Tk::FileDialog;
use strict;
use warnings;

my $selected = '';

my $mw = new MainWindow;
$mw->geometry(200 . 'x' . 100 . '+0+0'); 
$mw->Entry(-textvariable => \$selected
            )->pack(-expand => 1,
                    -fill => 'x');
$mw->Button(-text => 'Browse',
        # set the last variable to 1 to only select directories
        -command => [\&selectme, $mw, 'archive.tar', 'h:', 0]
        )->pack(-expand => 1,
            -fill => 'x');
$mw->Button(-text => 'Exit',
         -command => sub {$mw->destroy}
        )->pack(-expand => 1,
            -fill => 'x');
MainLoop;

sub selectme {
    my ($mw, $startfile, $startpath, $seldir) = @_;
    my $output = undef;

    ## configuration
    my($LoadDialog) = $mw->FileDialog(-Title =>'Select ...',
            -File => $startfile,
            -Path => $startpath,
            #-Chdir => 1,
            #-Create => 1,
            #-ShowAll => 1,
            -DisableShowAll => 1,
            #-Grab => 1,
            #-Horiz => 1,
            -SelDir => $seldir,
            #-FPat => '*',
            #-Geometry => '',
            );
    $selected = $LoadDialog->Show();
    if (!defined($startfile)) {
        $selected = "No file chosen!"
    }
    return $startfile;
}
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