C#代码关闭Windows XP

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  usingSystem;
  usingSystem.Runtime.InteropServices;
  classshoutdown
  {
  [StructLayout(LayoutKind.Sequential, Pack = 1)]
  internalstructTokPriv1Luid
  {
  publicintCount;
  publiclongLuid;
  publicintAttr;
  }
  [DllImport("kernel32.dll", ExactSpelling = true)]
  internalstaticexternIntPtr GetCurrentProcess();
  [DllImport("advapi32.dll", ExactSpelling = true, SetLastError = true)]
  internalstaticexternboolOpenProcessToken(IntPtr h, intacc, refIntPtr phtok);
  [DllImport("advapi32.dll", SetLastError = true)]
  internalstaticexternboolLookupPrivilegeValue(stringhost, stringname, reflongpluid);
  [DllImport("advapi32.dll", ExactSpelling = true, SetLastError = true)]
  internalstaticexternboolAdjustTokenPrivileges(IntPtr htok, booldisall,
  refTokPriv1Luid newst, intlen, IntPtr prev, IntPtr relen);
  [DllImport("user32.dll", ExactSpelling = true, SetLastError = true)]
  internalstaticexternboolExitWindowsEx(intflg, intrea);
  internalconstintSE_PRIVILEGE_ENABLED = 0x00000002;
  internalconstintTOKEN_QUERY = 0x00000008;
  internalconstintTOKEN_ADJUST_PRIVILEGES = 0x00000020;
  internalconststringSE_SHUTDOWN_NAME = "SeShutdownPrivilege";
  internalconstintEWX_LOGOFF = 0x00000000;
  internalconstintEWX_SHUTDOWN = 0x00000001;
  internalconstintEWX_REBOOT = 0x00000002;
  internalconstintEWX_FORCE = 0x00000004;
  internalconstintEWX_POWEROFF = 0x00000008;
  internalconstintEWX_FORCEIFHUNG = 0x00000010;
  privatestaticvoidDoExitWin(intflg)
  {
  boolok;
  TokPriv1Luid tp;
  IntPtr hproc = GetCurrentProcess();
  IntPtr htok = IntPtr.Zero;
  ok = OpenProcessToken(hproc, TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, refhtok);
  tp.Count = 1;
  tp.Luid = 0;
  tp.Attr = SE_PRIVILEGE_ENABLED;
  ok = LookupPrivilegeValue(null, SE_SHUTDOWN_NAME, reftp.Luid);
  ok = AdjustTokenPrivileges(htok, false, reftp, 0, IntPtr.Zero, IntPtr.Zero);
  ok = ExitWindowsEx(flg, 0);
  }
  publicstaticvoidMain()
  {
  Console.WriteLine("正在关闭计算机……");
  // 修改 EWX_SHUTDOWN 或者 EWX_LOGOFF, EWX_REBOOT等实现不同得功能。
// 在XP下可以看到帮助信息,以得到不同得参数
// SHUTDOWN /?
DoExitWin(EWX_SHUTDOWN);
  }
  }

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http://www.chenjiliang.com/Article/View.aspx?ArticleID=439&TypeID=84
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