我正在尝试以编程方式关闭 Windows:
Function ExitWindows() As Integer
Declare Function GetCurrentProcess Lib "Kernel32" () As Integer
Declare Function OpenProcessToken Lib "AdvApi32" (handle As Integer, access As Integer, ByRef tHandle As Integer) As Boolean
Declare Function LookupPrivilegeValueW Lib "AdvApi32" (sysName As Ptr, privName As WString, Luid As Ptr) As Boolean
Declare Function AdjustTokenPrivileges Lib "AdvApi32" (tHandle As Integer, disableAllPrivs As Boolean, newState As Ptr, buffLength As Integer, prevPrivs As Ptr, ByRef retLen As Integer) As Boolean
Declare Function ExitWindowsEx Lib "User32" (flags As Integer, reason As Integer) As Boolean
Declare Function GetLastError Lib "Kernel32" () As Integer
Const SE_PRIVILEGE_ENABLED = &h00000002
Const TOKEN_QUERY = &h00000008
Const TOKEN_ADJUST_PRIVILEGES = &h00000020
Const SE_SHUTDOWN_NAME = "SeShutdownPrivilege"
Const EWX_SHUTDOWN = &h00000001
Dim pHandle As Integer = GetCurrentProcess() //a handle to the current process
Dim tHandle As Integer //a handle to the token
If OpenProcessToken(pHandle, TOKEN_ADJUST_PRIVILEGES Or TOKEN_QUERY, tHandle) Then
Dim mb As New MemoryBlock(8)
mb.UInt32Value(0) = 1
mb.Int32Value(4) = SE_PRIVILEGE_ENABLED
Dim pt As Ptr
If LookupPrivilegeValueW(Nil, "SeShutdownPrivilege", mb) Then
Dim z As Integer
If AdjustTokenPrivileges(tHandle, False, mb, mb.Size, pt, z) Then
If Not ExitWindowsEx(EWX_SHUTDOWN, 0) Then
Return GetLastError() //Returns 1314
End If
Else
Return GetLastError()
End If
Else
Return GetLastError()
End If
Else
Return GetLastError()
End If
End Function
每个函数调用都会成功,但 ExitWindowsEx 除外,即使以管理员身份运行,它也总是会失败并显示错误代码 1314(未保留特权)。重新启动有同样的问题,但注销工作。
我在这里做错了什么?