关闭计算机电源

留下些什么 2004-10-09 07:06:04

Option Explicit

Private Const TOKEN_ADJUST_PRIVILEGES = &H20
Private Const TOKEN_QUERY = &H8
Private Const SE_PRIVILEGE_ENABLED = &H2
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

Private Type TOKEN_PRIVILEGES
PrivilegeCount As Long
TheLuid As LUID
Attributes As Long
End Type

'关闭系统的API
Private Declare Function ExitWindowsEx Lib "user32" (ByVal dwOptions As Long, _
ByVal dwReserved As Long) As Long
'获取当前进程的一个伪句柄
'只要当前进程需要一个进程句柄，就可以使用这个伪句柄。该句柄可以复制，但不可继承。不必调用CloseHandle函数来关闭这个句柄
Private Declare Function GetCurrentProcess Lib "kernel32" () As Long

'以下为NT/2000中和权限相关的函数
'如果函数执行成功，返回非零。
Private Declare Function OpenProcessToken Lib "advapi32" (ByVal ProcessHandle As Long, _
ByVal DesiredAccess As Long, _
TokenHandle As Long) As Long
'查看权限的函数
Private Declare Function LookupPrivilegeValue Lib "advapi32" Alias "LookupPrivilegeValueA" _
(ByVal lpSystemName As String, _
ByVal lpName As String, lpLuid As LUID) As Long
'设置权限的函数
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

Sub ExitSystem()

Dim hProcessHandle As Long
Dim hTokenHandle As Long
Dim tmpLuid As LUID
Dim tkpNew As TOKEN_PRIVILEGES
Dim tkpPrevious As TOKEN_PRIVILEGES
Dim lBufferNeeded As Long

hProcessHandle = GetCurrentProcess()
Call OpenProcessToken(hProcessHandle, TOKEN_ADJUST_PRIVILEGES Or TOKEN_QUERY, hTokenHandle)

Call LookupPrivilegeValue("", "SeShutdownPrivilege", tmpLuid)

tkpNew.PrivilegeCount = 1
tkpNew.TheLuid = tmpLuid
tkpNew.Attributes = SE_PRIVILEGE_ENABLED

lBufferNeeded = 0
Call AdjustTokenPrivileges(hTokenHandle, False, tkpNew, Len(tkpPrevious), tkpPrevious, lBufferNeeded)

Call ExitWindowsEx(EWX_SHUTDOWN, &O0)

End Sub

这段程序在XP下只能关机，还要手工关掉电源！

用什么方法可以直接关闭电源呢？？？？？？

...全文