From: ptkwt@...1.aracnet.com (Phil Tomson)
Date: 2001-04-04T03:40:04+09:00
Subject: [ruby-talk:13464] redirecting $stdin

I'm trying to be able to write to STDIN - yeah, its a strange thing to do, 
I know, but I've got to send a control-C to a child process created with 
Win32 CreateProcess calls and it seems like a good way to do it.

I can do this on Solaris and it seems to work:

###################################
stdin_num = $stdin.fileno
puts "stdin fileno is: #{stdin_num}"
save_stdin = $stdin.clone
begin
   stin = IO.new(stdin_num,"w")
   stin.putc "^C"
rescue
   puts "got #{$!}"
end
$stdin.reopen(save_stdin) 
####################################

but on WinNT I get:
"stdin fileno is: 0"
"got Bad file number"

This is coming from the IO.new(0,"w")

0 seems to be illegal here for Windows (I can put a 1 or 2 there 
corresponding to stdout and stderr, but not a 0 corresponding to stdin).

Any ideas?  Is this just one of those things you can't do on Windows?

Phil