From: Kk Kk <lists@...>
Date: 2012-07-22T12:40:50+09:00
Subject: why not do it like this ?

#!/usr/bin/env ruby
#-*- coding:cp936 -*-

require ctypes

dll = ctypes.WinDLL('user32.dll')

dll.GetForegroundWindow()
dll.LockWorkStation()

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