调用API本地关机

前面的例子，演示了如何通过WMI远程关机，本来以为此例也能够实现本地关机，但是试验的结果是：



悲惨的结果，只好另想其它的办法。

不要忘记世上还有API这个好东东,对于ExitWindowEx，大家不应当陌生，下面的例子就是演示了如何调用此API实现关机（摘抄至微软专家于CSDN上发表的贴子）：

[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 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 );

}

　

如果您想实现关机，重启等操作，只需拷贝上面的代码，并调用DoExitWin函数就行了。重启就使用DoExitWin(EWX_REBOOT)，关机就使用DoExitWin(EWX_SHUTDOWN)等