整理出来的一个windows关机、锁定、重启、注销 API调用

using System.Runtime.InteropServices;

namespace HookDemo
{
    class WindowsExit
    {
        [StructLayout(LayoutKind.Sequential, Pack = 1)]
        private struct TokPriv1Luid
        {
            public int Count;
            public long Luid;
            public int Attr;
        }
        [DllImport("kernel32.dll", ExactSpelling = true)]
        private static extern IntPtr GetCurrentProcess();

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

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

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

        [DllImport("user32.dll", ExactSpelling = true, SetLastError = true)]
        private static extern bool ExitWindowsEx(int DoFlag, int rea);
        [DllImport("user32.dll")]
        public static extern void LockWorkStation();

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

        private static bool DoExitWin(int DoFlag)
        {
            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(DoFlag, 0);
            return ok;
        }

        /// <summary>
        /// 锁定计算机
        /// </summary>
        public static void Lock()
        {
            LockWorkStation();
        }

        /**/
        /// <summary>
        /// 重新启动
        /// </summary>
        public static bool Reboot()
        {
            return DoExitWin(EWX_FORCE | EWX_REBOOT);
        }

        /**/
        /// <summary>
        /// 关机
        /// </summary>
        public static bool PowerOff()
        {
            return DoExitWin(EWX_FORCE | EWX_POWEROFF);
        }

        /**/
        /// <summary>
        /// 注销
        /// </summary>
        public static bool LogOff()
        {
            return DoExitWin(EWX_FORCE | EWX_LOGOFF);
        }
    }
}