windows 关机代码

摘要：很多windows软件涉及到自动关机功能，本文介绍2中实现windows关机功能的方法。

1. shutdown.exe
原理就是调用shutdown关机命令命令。

优点：

实现简单。

缺点：

命令执行后会弹出一个对话框。（目前我还没有找到取消它的方法）

C#实现代码：

[csharp]
System.Diagnostics.Process boot_process = new System.Diagnostics.Process();
boot_process.StartInfo.FileName = "shutdown";
boot_process.StartInfo.Arguments = "/s /t 3";
boot_process.StartInfo.CreateNoWindow = true;
boot_process.StartInfo.UseShellExecute = false;
boot_process.Start();

    System.Diagnostics.Process boot_process = new System.Diagnostics.Process();
    boot_process.StartInfo.FileName = "shutdown";
    boot_process.StartInfo.Arguments = "/s /t 3";
    boot_process.StartInfo.CreateNoWindow = true;
    boot_process.StartInfo.UseShellExecute = false;
    boot_process.Start();

2. 调用windows底层函数ExitWindowsEx实现关机

BOOL ExitWindowsEx(
UINT uFlags, // 关闭参数
DWORD dwReserved // 系统保留，一般取0
);

下面会介绍一段C#的关机代码
其中主要的函数就是ExitWindowsEx，而其他的主要是为了获取win7系统的关机权限。

C#实现代码：
[csharp]
class Shutdown
{
    [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 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;

    public static void DoExitWin(int DoFlag)
    {
        bool res;
        TokPriv1Luid tp;
        IntPtr hproc = GetCurrentProcess();
        IntPtr htok = IntPtr.Zero;
        res = OpenProcessToken(hproc, TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, ref htok);
        tp.Count = 1;
        tp.Luid = 0;
        tp.Attr = SE_PRIVILEGE_ENABLED;
        res = LookupPrivilegeValue(null, SE_SHUTDOWN_NAME, ref tp.Luid);
        res = AdjustTokenPrivileges(htok, false, ref tp, 0, IntPtr.Zero, IntPtr.Zero);
        res = ExitWindowsEx(DoFlag, 0);
    }

    public static void Reboot()
    {
        DoExitWin(EWX_FORCE | EWX_REBOOT);
    }

    public static void PowerOff()
    {
        DoExitWin(EWX_FORCE | EWX_POWEROFF);
    }

    public static void LogOff()
    {
        DoExitWin(EWX_FORCE | EWX_LOGOFF);
    }
}

    class Shutdown
    {
        [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 DoFlag, int rea);

internal const int SE_PRIVILEGE_ENABLED = 0x00000002;
internal const int TOKE

补充：软件开发 , C# ,