Ruby Capture Key Presses - getc doesn't work

Problem: (doesn't work)

while true
   ch = getc #return immediately the key I just pressed (enter, a, down arrow)
   puts ch
 end

In an almost religious pursuit of ways of capturing keypresses in ruby (for windows) I found a few different technologies that help.

Solution 1 (curses): works! except arrow keys

require 'curses'

#stdscr.keypad(true) # would be great if this was implemented for windows
while true
  ch = Curses.getch
  puts ch
end

* keypad(true) isn't implemented on windows

Solution 2: Using win32 api

require 'Win32API'

  $win32_console_kbhit = Win32API.new("msvcrt", "_kbhit", [], 'I')
  $win32_console_cputs = Win32API.new("msvcrt", "_cputs", ['P'], 'I')
  $win32_console_getch = Win32API.new("msvcrt", "_getch", [], 'I')

  def console_input_ready?
    $win32_console_kbhit.call != 0
  end

  def console_input
    $win32_console_getch.call
  end

  def console_output( str )
    $win32_console_cputs.call( str )
  end

  while true
    if console_input_ready? then
        ch = console_input
        puts "ch: #{ch.chr}"    
    end
  end

And this works for arrow keys so I am happy