Il codice seguente permette di spegnere il computer,
effettuare il reboot, il logoff e altre operazioni analoghe su 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(\"Sto per spegnere il computer...\");
//Modificare EWX_SHUTDOWN con EWX_LOGOFF, EWX_REBOOT, ecc, ecc...
DoExitWin(EWX_SHUTDOWN);
}
}