实现自动向其它进程的窗口发消息，模拟手动操作的功能，并且实现windows 2000操作系统的自动登陆，登陆后立刻锁定工作站。代码演示了注册表的使用，user32库中锁定工作站Lockworkstation函数的使用等。-automatic process to other reports from the window, simulating the operation of manual functions, windows 2000 and achieve operating system's automatic landing, the landing immediately after locking workstations. Code demonstration of the use of the registry, user32 library Lockworkstation lock function workstation use.