You try something like this ...

#!/usr/bin/perl -w

use strict;

use Tk;
use Tk qw(exit);
use Tk::DialogBox;


my $FILE1 = "Please select a file";
my $FILE2 = "Please select a file";

my $top = MainWindow->new();

my $thebutton = $top->Button( 
    -relief => "groove", 
    -text => "Click Me ", 
    -command => \&thebuttonCallback)->pack();

sub selectFile1Callback  {
    my $userSelectedFile = $top->getOpenFile(
        -defaultextension => ".ctl",
        -filetypes    => 
            [
                ['Control Files', '.ctl'],
                ['All Files', '*']
            ],
        -initialdir    =>    "C:\\TEMP",
        -initialfile    =>    "Junk.txt",
        -title        =>     "Select file 1"
    );
    if ($userSelectedFile) {
        $FILE1 = $userSelectedFile;
    }
}

sub selectFile2Callback  {
    my $userSelectedFile = $top->getOpenFile(
        -defaultextension => ".ctl",
        -filetypes    => 
            [
                ['Control Files', '.ctl'],
                ['All Files', '*']
            ],
        -initialdir    =>    "C:\\TEMP",
        -initialfile    =>    "Junk.txt",
        -title        =>     "Select file 2"
    );
    if ($userSelectedFile) {
        $FILE2 = $userSelectedFile;
    }
}

[download]

There is a lot of room for improvement.
You only need one selectFileCalback.
Hope that helps

--
Its like a dog that can sing and dance.
It's remarkable because it can do it.
Not that it can do it well.

In reply to Re: Multiple file selection in Tk dialogbox by rbc
in thread Multiple file selection in Tk dialogbox by Pavel

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.