I realise I come very late in this exchange, but just in case people are still looking for answers, I got it to work with cygwin perl on Windows XP with the following tweaks :

1/ 
  use IO::Select;
  use IO::Socket;
  use IO::Handle;
  use IPC::Open3;

[download]
2/ 
  $Pin  = new IO::Handle;       $Pin->fdopen(10, "w");
  $Pout = new IO::Handle;       $Pout->fdopen(11, "r");
  $Perr = new IO::Handle;       $Perr->fdopen(12, "r");
  $Proc = open3($Pin, $Pout, $Perr, $cmdline);

[download]
3/ 
  $select->add($Pin);
  $select->add($Pout);
  $select->add($Perr);

[download]

For $cmdline I used bash, to test things by hand (with STDIN added to my select and printing on $Pin what I get on my perl process' stdin).

It works beautifully.

In reply to Re^3: open3 and IO::Select by Anonymous Monk
in thread open3 and IO::Select by stephens2k

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.