C#实现注销、重启和关机代码

首先要导入对命名空间

using System.Runtime.InteropServices;

的引用

[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);

}

private void button2_Click(object sender, EventArgs e)

{

//此代码实现重启功能

DoExitWin(EWX_REBOOT);

}

private void button3_Click(object sender, EventArgs e)

{

//此代码实现注销功能

DoExitWin(EWX_LOGOFF);

}

private void button1_Click_1(object sender, EventArgs e)

{

//此代码实现关机功能

DoExitWin(EWX_SHUTDOWN);

}

文章转自：http://essay.iteye.com/blog/342173