using System.Runtime.InteropServices;

//注销、关机、重启

    class shutdown

    {

        [StructLayout(LayoutKind.Sequential, Pack = )]

        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 DoFlag, 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 DoFlag)

        {

            bool ok;

            TokPriv1Luid tp;

            IntPtr hproc = GetCurrentProcess();

            IntPtr htok = IntPtr.Zero;

            ok = OpenProcessToken(hproc, TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, ref htok);

            tp.Count = ;

            tp.Luid = ;

            tp.Attr = SE_PRIVILEGE_ENABLED;

            ok = LookupPrivilegeValue(null, SE_SHUTDOWN_NAME, ref tp.Luid);

            ok = AdjustTokenPrivileges(htok, false, ref tp, , IntPtr.Zero, IntPtr.Zero);

            ok = ExitWindowsEx(DoFlag, );

        }

        public void Reboot()//重启

        {

            DoExitWin(EWX_FORCE | EWX_REBOOT);

        }

        public void PowerOff()//关机

        {

            DoExitWin(EWX_FORCE | EWX_POWEROFF);

        }

        public void LogOff()//注销

        {

            DoExitWin(EWX_FORCE | EWX_LOGOFF);

        }

    }

[DllImport("user32.dll", CharSet = CharSet.Auto, SetLastError = true)]

        static extern IntPtr SendMessage(IntPtr hWnd, uint Msg, uint wParam, uint lParam);

        const uint WM_APPCOMMAND = 0x319;

        const uint APPCOMMAND_VOLUME_UP = 0x0a;

        const uint APPCOMMAND_VOLUME_DOWN = 0x09;

        const uint APPCOMMAND_VOLUME_MUTE = 0x08;

 public void volumeUp() {//音量加

            SendMessage(this.Handle, WM_APPCOMMAND, 0x30292, APPCOMMAND_VOLUME_UP * 0x10000);

        }

        public void volumeDown()

        {//音量减

            SendMessage(this.Handle, WM_APPCOMMAND, 0x30292, APPCOMMAND_VOLUME_DOWN * 0x10000);

        }

        public void volumeMuet()

        {//静音或取消

            SendMessage(this.Handle, WM_APPCOMMAND, 0x200eb0, APPCOMMAND_VOLUME_MUTE * 0x10000);

        }

using CoreAudioApi;

using System.Runtime.InteropServices;

namespace LHProgectClient

{

    class volumeControl

    {

        //实例化CoreAudioApi里的类

        MMDeviceEnumerator devEnum = new MMDeviceEnumerator();

        MMDevice defaultDevice = null;

        //初始化

        public volumeControl()

        {

            defaultDevice = devEnum.GetDefaultAudioEndpoint(EDataFlow.eRender, ERole.eMultimedia);

        }

        //是否静音

        public bool MUTE

        {

            get { return defaultDevice.AudioEndpointVolume.Mute; }

            set { defaultDevice.AudioEndpointVolume.Mute = value; }

        }

        //音量加

        public void volumeUp()

        {

            defaultDevice.AudioEndpointVolume.VolumeStepUp();

        }

        //音量减

        public void volumeDown()

        {

            defaultDevice.AudioEndpointVolume.VolumeStepDown();

        }

        //静音、取消

        public void volumeMute()

        {

            defaultDevice.AudioEndpointVolume.Mute = !defaultDevice.AudioEndpointVolume.Mute;

        }

    }

}