Here are two progs that works under linux, I have no way to test under windows. You should read "perldoc perlsec" for info about security and tainted data. You untaint data with regexps, remember to be careful. 
#!/usr/bin/perl -w

use strict;
use Tk;

my $mw = MainWindow->new();

my $file_name = 'Some file';

$mw->send('Foo' => $file_name);

#!/usr/bin/perl -Tw

use strict;
use Tk;

my $main_window = MainWindow->new(-title => 'My other prog');
$main_window->appname('Foo');

MainLoop;

sub Tk::Receive{
    shift;
    my $string = shift;

    if (my ($file) = $string =~ /^([^-]+)$/){
        print "Got: $file\n";
        exit 0;
    }
    else {
        print "Wrong arg Received\n";
        exit 1;
    }
}

[download]

In reply to Re^3: simple IPC needed by lidden
in thread simple IPC needed by redss

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.