void shutdown()
{
HANDLE hToken;
TOKEN_PRIVILEGES tkp;
OpenProcessToken( GetCurrentProcess(), TOKEN_ADJUST_PRIVILEGES|TOKEN_QUERY, &hToken );
LookupPrivilegeValue( NULL, SE_SHUTDOWN_NAME, &tkp.Privileges[0].Luid );
tkp.PrivilegeCount = 1;
tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
AdjustTokenPrivileges( hToken, FALSE, &tkp, 0, (PTOKEN_PRIVILEGES)NULL, 0);
ExitWindowsEx(EWX_POWEROFF|EWX_FORCE, 0);
}