Win32::Process::Create() - how to capture process output?

Here is the progression of events... (1) I have an open logfile,  (2) I start a process using Win32::Process::Create,  (3) I "Wait" midway through process execution time, then  (4) print other stuff to the logfile.

I need to collect and print the output started at step 2 to the logfile.  I don't mind using a temporary file for storage...but prefer to capture data in memory.  How do I do either of these?  I'm thinking simple redirection to a file in the Process::Create( ) call won't work...but have not tried it.

sub call_it
{
  # ...
  $proc = execute_child($profile);
  proc->Wait (60 * 1000) # wait 1 minute
  print_file_sizes($profile); // prints some other data to the open logfile
  # ...
}
sub execute_child
{
  # ...
  Win32::Process::Create ($ProcessObj2, $proc_fname, "$PROC_NAME -int $interval -samples 3",
    0, NORMAL_PRIORITY_CLASS, "." );  
    # $PROC_NAME runs for 2 minutes - output normally goes to stdout ... its a command line process.
    # I would like to capture this output somehow...?
  # ...
  return $ProcessObj2;
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