求关机、重启、注销代码
如题

------解决方案--------------------
重启使用WMI，网上代码很多。
估计注销也可以使用WMI。
关机使用调用API的类如下：
using System;
using System.Runtime.InteropServices ;

namespace OffComputer
{
/// <summary>
/// Offcomputer 的摘要说明。
/// 关闭计算机
/// </summary>
public class Offcomputer
{
[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;
public Offcomputer()
{
//
// TODO: 在此处添加构造函数逻辑
//
}
public static void ShutDown(int i) //i=0 ShutDown i=1 Reboot
{
if (i == 0)
{
DoExitWin(EWX_SHUTDOWN + EWX_FORCE);
}
else if (i == 1)
{
DoExitWin(EWX_REBOOT + EWX_FORCE);
}

}
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);
}

}
}


------解决方案--------------------
// AutoShutDownDlg.cpp : 实现文件
//

#include "stdafx.h "
#include "AutoShutDown.h "
#include "AutoShutDownDlg.h "

#ifdef _DEBUG
#define new DEBUG_NEW
#endif

#define WM_TRAYMESSAGE WM_USER+10000;


// 用于应用程序“关于”菜单项的 CAboutDlg 对话框