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using System;
using System.Runtime.InteropServices;
  
class shoutdown{
   [StructLayout(LayoutKind.Sequential, Pack=1)]
   internal struct TokPriv1Luid
   {
      public int Count;
      public long Luid;
      public int Attr;
   }

   [DllImport("kernel32.dll", ExactSpelling=true)]
   internal static extern IntPtr GetCurrentProcess();

   [DllImport("advapi32.dll", ExactSpelling=true, SetLastError=true)]
   internal static extern bool OpenProcessToken(IntPtr h, int acc, ref IntPtr phtok);

   [DllImport("advapi32.dll", SetLastError=true)]
   internal static extern bool LookupPrivilegeValue(string host, string name, ref long pluid);

   [DllImport("advapi32.dll", ExactSpelling=true, SetLastError=true)]
   internal static extern bool AdjustTokenPrivileges(IntPtr htok, bool disall,
ref TokPriv1Luid newst, int len, IntPtr prev, IntPtr relen);

   [DllImport("user32.dll", ExactSpelling=true, SetLastError=true)]
   internal static extern bool ExitWindowsEx(int flg, int rea);

   internal const int SE_PRIVILEGE_ENABLED = 0x00000002;
   internal const int TOKEN_QUERY = 0x00000008;
   internal const int TOKEN_ADJUST_PRIVILEGES = 0x00000020;
   internal const string SE_SHUTDOWN_NAME = "SeShutdownPrivilege";
   internal const int EWX_LOGOFF = 0x00000000;
   internal const int EWX_SHUTDOWN = 0x00000001;
   internal const int EWX_REBOOT = 0x00000002;
   internal const int EWX_FORCE = 0x00000004;
   internal const int EWX_POWEROFF = 0x00000008;
   internal const int EWX_FORCEIFHUNG = 0x00000010;

   private static void DoExitWin(int flg)
   {
      bool ok;
      TokPriv1Luid tp;
      IntPtr hproc = GetCurrentProcess();
      IntPtr htok = IntPtr.Zero;
      ok = OpenProcessToken(hproc, TOKEN_ADJUST_PRIVILEGES|TOKEN_QUERY, ref htok);
      tp.Count = 1;
      tp.Luid = 0;
      tp.Attr = SE_PRIVILEGE_ENABLED;
      ok = LookupPrivilegeValue(null, SE_SHUTDOWN_NAME, ref tp.Luid);
      ok = AdjustTokenPrivileges(htok, false, ref tp, 0, IntPtr.Zero, IntPtr.Zero);
      ok = ExitWindowsEx(flg, 0);
   }

      public static void Main()
      {
         Console.WriteLine("正在關(guān)閉計算機……");
         // 修改 EWX_SHUTDOWN 或者 EWX_LOGOFF, EWX_REBOOT等實(shí)現不同得功能。
         // 在XP下可以看到幫助信息，以得到不同得參數
         // SHUTDOWN /?
         DoExitWin(EWX_SHUTDOWN);
      }
}