C # code closes Windows XP

Using System;


using System.Runtime.InteropServices;


　


class shoutdown{


[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);


　}


public static void Main ()


　　　{


Console.WriteLine ("Shutting down the computer ...");


//Modify Ewx_shutdown or Ewx_logoff, ewx_reboot and so on to achieve different functions.


//Under XP you can see the help information to get the different parameters


//SHUTDOWN/?


Doexitwin (Ewx_shutdown);


　　　}


}