'Declaraciones de API, tipos de datos y constantes necesarias

'Este code lo pones en el formulario

' Las funciones del API

Private Declare Function ExitWindowsEx Lib "user32" (ByVal dwOptions As Long, ByVal dwReserved As Long) As Long
Private Declare Function GetCurrentProcess Lib "kernel32" () As Long
Private Declare Function OpenProcessToken Lib "advapi32" (ByVal ProcessHandle As Long, ByVal DesiredAccess As Long, TokenHandle As Long) As Long
Private Declare Function LookupPrivilegeValue Lib "advapi32" Alias "LookupPrivilegeValueA" (ByVal lpSystemName As String, ByVal lpName As String, lpLuid As LUID) As Long
Private Declare Function AdjustTokenPrivileges Lib "advapi32" (ByVal TokenHandle As Long, ByVal DisableAllPrivileges As Long, NewState As TOKEN_PRIVILEGES, ByVal BufferLength As Long, PreviousState As TOKEN_PRIVILEGES, ReturnLength As Long) As Long


' Las constantes
      Private Const EWX_LOGOFF As Long = 0
      Private Const EWX_SHUTDOWN As Long = 1
      Private Const EWX_FORCE As Long = 4
      Private Const EWX_REBOOT = 2

Private Type LUID
         UsedPart As Long
         IgnoredForNowHigh32BitPart As Long
      End Type
                                        ' El tipo de datos para obtener privilegio
      Private Type TOKEN_PRIVILEGES
         PrivilegeCount As Long
         TheLuid As LUID
         Attributes As Long
      End Type

Private Sub AdjustToken()
         Const TOKEN_ADJUST_PRIVILEGES = &H20
         Const TOKEN_QUERY = &H8
         Const SE_PRIVILEGE_ENABLED = &H2
         Dim hdlProcessHandle As Long
         Dim hdlTokenHandle As Long
         Dim tmpLuid As LUID
         Dim tkp As TOKEN_PRIVILEGES
         Dim tkpNewButIgnored As TOKEN_PRIVILEGES
         Dim lBufferNeeded As Long

         hdlProcessHandle = GetCurrentProcess()
         OpenProcessToken hdlProcessHandle, (TOKEN_ADJUST_PRIVILEGES Or TOKEN_QUERY), hdlTokenHandle

         LookupPrivilegeValue "", "SeShutdownPrivilege", tmpLuid
         
         tkp.PrivilegeCount = 1    ' Conseguir 1 permiso
         tkp.TheLuid = tmpLuid
         tkp.Attributes = SE_PRIVILEGE_ENABLED
         AdjustTokenPrivileges hdlTokenHandle, False, tkp, Len(tkpNewButIgnored), tkpNewButIgnored, lBufferNeeded
      End Sub