怎么在WIN2000中自动关机

[apollo]

我在WIN98中调用EXITWINDOWEX能关机，但是在WIN2000中程序不能关机，怎么在WIN2000中自动关机啊

[griefforyou]

定时关机
Option Explicit

Dim mDattime As Date

Private Declare Function ExitWindowsEx Lib "user32" (ByVal uFlags As Long, ByVal dwReserved As Long) As Long

Private Declare Function AdjustTokenPrivileges Lib "advapi32.dll" (ByVal TokenHandle As Long, ByVal DisableAllPrivileges As Long, NewState As TOKEN_PRIVILEGES, ByVal BufferLength As Long, PreviousState As Long, ReturnLength As Long) As Long
Private Declare Function GetTokenInformation Lib "advapi32.dll" (ByVal TokenHandle As Long, ByVal TokenInformationClass As Long, TokenInformation As Any, ByVal TokenInformationLength As Long, ReturnLength As Long) As Long
Private Declare Function LookupPrivilegeValue Lib "advapi32.dll" Alias "LookupPrivilegeValueA" (ByVal lpSystemName As String, ByVal lpName As String, ByRef lpLuid As LARGE_INTEGER) As Long

Private Declare Function OpenProcessToken Lib "advapi32.dll" (ByVal ProcessHandle As Long, ByVal DesiredAccess As Long, TokenHandle As Long) As Long
Private Declare Function GetCurrentProcessId Lib "kernel32" () As Long
Private Declare Function GetCurrentProcess Lib "kernel32" () As Long
Private Declare Function OpenProcess Lib "kernel32" (ByVal dwDesiredAccess As Long, ByVal bInheritHandle As Long, ByVal dwProcessId As Long) As Long
Private Declare Function CloseHandle Lib "kernel32" (ByVal hObject As Long) As Long

Private Const EWX_LOGOFF = 0 '注销当前用户
Private Const EWX_POWEROFF = 8 '关闭系统并关闭电源
Private Const EWX_SHUTDOWN = 1 '关闭系统使之能安全关闭电源
Private Const EWX_REBOOT = 2 '关闭系统并重启
Private Const EWX_FORCE = 4 '应用程序强制关闭
Private Const EWX_FORCEIFHUNG = 16 '如果应用程序已挂起，强制关闭

Private Const SE_PRIVILEGE_ENABLED = &H2
Private Const SE_PRIVILEGE_ENABLED_BY_DEFAULT = &H1
Private Const SE_PRIVILEGE_USED_FOR_ACCESS = &H80000000

Private Const TOKEN_ADJUST_PRIVILEGES = &H20
Private Const TOKEN_QUERY_SOURCE = &H10
Private Const TOKEN_QUERY = &H8

Private Const ANYSIZE_ARRAY = 1

Private Const SE_SHUTDOWN_NAME = "SeShutdownPrivilege"

Private Const PROCESS_SET_INFORMATION = &H200
Private Const PROCESS_QUERY_INFORMATION = &H400

Private Type LARGE_INTEGER
lowpart As Long
highpart As Long
End Type

Private Type LUID
lowpart As Long
highpart As Long
End Type
Private Type LUID_AND_ATTRIBUTES
pLuid As LUID
Attributes As Long
End Type
Private Type TOKEN_PRIVILEGES
PrivilegeCount As Long
Privileges(0) As LUID_AND_ATTRIBUTES
End Type

Private Sub Command1_Click()
mDattime = CDate(txtHour.Text & ":" & txtMinute.Text)
Timer1.Interval = 1000
Form1.WindowState = 1
End Sub
Private Sub Shutdown()

Dim lAPIReturn As Long

Dim tTOKPRI As TOKEN_PRIVILEGES
Dim tLUID As LUID
Dim tLarInt As LARGE_INTEGER
Dim lRequired As Long
Dim hTokHan As Long
Dim hProcess As Long



If LookupPrivilegeValue(vbNullString, SE_SHUTDOWN_NAME, tLarInt) = 0 Then
MsgBox "Get LUID error!", vbOKOnly, "Error"
Exit Sub
End If

tLUID.highpart = tLarInt.highpart
tLUID.lowpart = tLarInt.lowpart

tTOKPRI.PrivilegeCount = 1
tTOKPRI.Privileges(0).Attributes = SE_PRIVILEGE_ENABLED
tTOKPRI.Privileges(0).pLuid = tLUID

hProcess = GetCurrentProcess()
lAPIReturn = OpenProcessToken(hProcess, TOKEN_ADJUST_PRIVILEGES + TOKEN_QUERY, hTokHan)
lAPIReturn = AdjustTokenPrivileges(hTokHan, 0, tTOKPRI, Len(tTOKPRI), 0, 0)
' lAPIReturn = ExitWindowsEx(EWX_LOGOFF, 0)
' lAPIReturn = ExitWindowsEx(EWX_SHUTDOWN, 0)
lAPIReturn = ExitWindowsEx(EWX_POWEROFF, 0)
' lAPIReturn = ExitWindowsEx(EWX_REBOOT, 0)
' lAPIReturn = ExitWindowsEx(EWX_FORCE, 0)
' lAPIReturn = ExitWindowsEx(EWX_FORCEIFHUNG, 0)
If lAPIReturn = 0 Then
MsgBox "Function calling error!", vbOKOnly, "错误"
End If

lAPIReturn = CloseHandle(hTokHan)

End Sub

Private Sub Form_Load()

Timer1.Enabled = True

End Sub

Private Sub Timer1_Timer()
If Format(Time, "hh:mm:ss") = mDattime Then
' If Minute(Time) = 0 Then
Shutdown
End If
End Sub