以前写过C++的，这个是我用VB仿造的，呵呵
Option Explicit
Private Const ANYSIZE_ARRAY = 1
Private Const SE_PRIVILEGE_ENABLED = &H2
Private Const TOKEN_ADJUST_PRIVILEGES = &H20
Private Const TOKEN_QUERY = &H8Private Type LUID
    LowPart As Long
    HighPart As Long
End TypePrivate Type LUID_AND_ATTRIBUTES
    pLuid As LUID
    Attributes As Long
End TypePrivate Type TOKEN_PRIVILEGES
    PrivilegeCount As Long
    Privileges(ANYSIZE_ARRAY) As LUID_AND_ATTRIBUTES
End TypePrivate 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
Private Declare Function SetSystemPowerState Lib "kernel32" (ByVal fSuspend As Long, ByVal fForce As Long) As LongPublic Function LetPcDormancy() As Boolean
    On Error GoTo Z
    Dim hToken As Long
    Dim mLUID As LUID
    Dim mPriv As TOKEN_PRIVILEGES
    Dim mNewPriv As TOKEN_PRIVILEGES
    If OpenProcessToken(GetCurrentProcess(), TOKEN_ADJUST_PRIVILEGES + TOKEN_QUERY, hToken) = 0 Then
       LetPcDormancy = False
       Exit Function
    End If
    If LookupPrivilegeValue("", "SeShutdownPrivilege", mLUID) = 0 Then
       LetPcDormancy = False
       Exit Function
    End If
    mPriv.PrivilegeCount = 1
    mPriv.Privileges(0).Attributes = SE_PRIVILEGE_ENABLED
    mPriv.Privileges(0).pLuid = mLUID
    AdjustTokenPrivileges hToken, False, mPriv, 4 + (12 * mPriv.PrivilegeCount), mNewPriv, 4 + (12 * mNewPriv.PrivilegeCount)
    SetSystemPowerState False, True
    LetPcDormancy = True
    Exit Function
Z:
End Function