You can use threads. For example: 
use strict;
use warnings;
use Win32::Process;
use Win32;
use threads;

my $ProcessObj;
Win32::Process::Create($ProcessObj,
                            "C:\\windows\\system32\\calc.exe",
                            "",
                            0,
                            NORMAL_PRIORITY_CLASS,
                            ".")|| die ErrorReport();

print "process created\n";
$| = 1;
sub ErrorReport{
    print Win32::FormatMessage( Win32::GetLastError() );
}

sub wait_proc {
  $ProcessObj->Wait(INFINITE);
  print "process finished\n";
}
my $thr = threads->create('wait_proc');


print "waiting for input\n";
$_ = <>;
print "input is $_\n";

$thr->join;

[download]
Depending on what you're doing in the main thread, the child thread could notify it (e.g. via Windows message or socket).

In reply to Re: child process termination on Windows by ReturnOfThelonious
in thread child process termination on Windows by morgon

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