关机、重启、登出、关闭电源操作

最新推荐文章于 2022-03-31 20:32:56 发布

原创最新推荐文章于 2022-03-31 20:32:56 发布 · 866 阅读

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#token #string #query #struct #system #class

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本文介绍了一个使用C#实现的系统关机、重启及登出功能的实用类库。通过调用Windows API，该类库能获取必要的权限来执行系统级操作，并提供了简洁的接口供应用程序使用。

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//ShutDown.cs
using System;
using System.Collections.Generic;
using System.Text;
using System.Runtime.InteropServices;

namespace Walter.K.Wang
{
    /// <summary>
    ///
    /// </summary>
    public class ShutDown
    {
        /// <summary>
        ///
        /// </summary>
        public enum Operat
        {
            /// <summary>
            /// 关闭计算机
            /// </summary>
            ShutDown,
            /// <summary>
            /// 登出計算機
            /// </summary>
            Logoff,
            /// <summary>
            /// 重起計算機
            /// </summary>
            Reboot,
            /// <summary>
            /// 關閉計算機
            /// </summary>
            Remind
        };
        [StructLayout(LayoutKind.Sequential, Pack = 1)]
        internal struct TokPrivlLuid
        {
            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 TokPrivlLuid 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 = 0x00000005;
        internal const int EWX_FORCEIFHUNG = 0x00000010;

        /// <summary>
        ///
        /// </summary>
        /// <param name="op"></param>
        public static void DoExitWin(Operat op)
        {
            int flg;
            switch (op)
            {
                case Operat.ShutDown:
                    flg = EWX_SHUTDOWN;
                    break;
                case Operat.Logoff:
                    flg = EWX_LOGOFF;
                    break;
                case Operat.Reboot:
                    flg = EWX_REBOOT;
                    break;
                default:
                    flg = EWX_SHUTDOWN;
                    break;
            }
            bool ok;
            TokPrivlLuid 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);
        }
    }
}

Walter.K.Wang.ShutDown.DoExitWin(Walter.K.Wang.ShutDown.Operat.ShutDown);