请问怎么才能在锁定计算机的状态下关机、强制关机、注销、重启、休眠、睡眠？

[huronzhu]

之前我用的是下面的，但是锁定的状态下就失效了，请问有什么别的方法吗？

Public Class WindowsController
    Public Enum RestartOptions
        LogOff = 0
        PowerOff = 8
        Reboot = 2
        ShutDown = 1
        Suspend = -1
        Hibernate = -2
    End Enum

    Public Structure LUID
        Dim LowPart As Integer
        Dim HighPart As Integer
    End Structure

    Public Structure LUID_AND_ATTRIBUTES

        Dim pLuid As LUID

        Dim Attributes As Integer
    End Structure


    Public Structure TOKEN_PRIVILEGES

        Dim PrivilegeCount As Integer

        Dim Privileges As LUID_AND_ATTRIBUTES
    End Structure

    Private Const TOKEN_ADJUST_PRIVILEGES = &H20
    Private Const TOKEN_QUERY = &H8
    Private Const SE_PRIVILEGE_ENABLED = &H2
    Private Const FORMAT_MESSAGE_FROM_SYSTEM = &H1000
    Private Const EWX_FORCE = 4
    Declare Function LoadLibrary Lib "kernel32" Alias "LoadLibraryA" (ByVal lpLibFileName As String) As IntPtr
    Declare Function FreeLibrary Lib "kernel32" (ByVal hLibModule As IntPtr) As Integer
    Declare Function GetProcAddress Lib "kernel32" (ByVal hModule As IntPtr, ByVal lpProcName As String) As IntPtr
    Declare Function SetSuspendState Lib "Powrprof" (ByVal Hibernate As Integer, ByVal ForceCritical As Integer, ByVal DisableWakeEvent As Integer) As Integer
    Declare Function OpenProcessToken Lib "advapi32.dll" (ByVal ProcessHandle As IntPtr, ByVal DesiredAccess As Integer, ByRef TokenHandle As IntPtr) As Integer
    Declare Function LookupPrivilegeValue Lib "advapi32.dll" Alias "LookupPrivilegeValueA" (ByVal lpSystemName As String, ByVal lpName As String, ByRef lpLuid As LUID) As Integer
    Declare Function AdjustTokenPrivileges Lib "advapi32.dll" (ByVal TokenHandle As IntPtr, ByVal DisableAllPrivileges As Integer, ByRef NewState As TOKEN_PRIVILEGES, ByVal BufferLength As Integer, ByRef PreviousState As TOKEN_PRIVILEGES, ByRef ReturnLength As Integer) As Integer
    Declare Function ExitWindowsEx Lib "user32" (ByVal uFlags As Integer, ByVal dwReserved As Integer) As Integer
    Declare Function FormatMessage Lib "kernel32" Alias "FormatMessageA" (ByVal dwFlags As Integer, ByVal lpSource As IntPtr, ByVal dwMessageId As Integer, ByVal dwLanguageId As Integer, ByVal lpBuffer As StringBuilder, ByVal nSize As Integer, ByVal Arguments As Integer) As Integer

    Public Sub ExitWindows(ByVal how As RestartOptions, ByVal force As Boolean)
        Select Case how
            Case RestartOptions.Suspend
                SuspendSystem(False, force)
            Case RestartOptions.Hibernate
                SuspendSystem(True, force)
            Case Else
                ExitWindows(Convert.ToInt32(how), force)
        End Select
    End Sub

    Protected Sub ExitWindows(ByVal how As Integer, ByVal force As Boolean)
        EnableToken("SeShutdownPrivilege")
        If force Then how = how Or EWX_FORCE
        If (ExitWindowsEx(how, 0) = 0) Then Throw New PrivilegeException(FormatError(Marshal.GetLastWin32Error()))
    End Sub

    Protected Sub EnableToken(ByVal privilege As String)
        If Not CheckEntryPoint("advapi32.dll", "AdjustTokenPrivileges") Then Return
        Dim tokenHandle As IntPtr = IntPtr.Zero
        Dim privilegeLUID = New LUID()
        Dim newPrivileges = New TOKEN_PRIVILEGES()
        Dim tokenPrivileges As TOKEN_PRIVILEGES
        If (OpenProcessToken(Process.GetCurrentProcess().Handle, TOKEN_ADJUST_PRIVILEGES Or TOKEN_QUERY, tokenHandle)) = 0 Then Throw New PrivilegeException(FormatError(Marshal.GetLastWin32Error()))
        If (LookupPrivilegeValue("", privilege, privilegeLUID)) = 0 Then Throw New PrivilegeException(FormatError(Marshal.GetLastWin32Error()))
        tokenPrivileges.PrivilegeCount = 1
        tokenPrivileges.Privileges.Attributes = SE_PRIVILEGE_ENABLED
        tokenPrivileges.Privileges.pLuid = privilegeLUID
        Dim Size As Integer = 4
        If (AdjustTokenPrivileges(tokenHandle, 0, tokenPrivileges, 4 + (12 * tokenPrivileges.PrivilegeCount), newPrivileges, Size)) = 0 Then Throw New PrivilegeException(FormatError(Marshal.GetLastWin32Error()))
    End Sub

    Protected Sub SuspendSystem(ByVal hibernate As Boolean, ByVal force As Boolean)
        If Not CheckEntryPoint("powrprof.dll", "SetSuspendState") Then Throw New PlatformNotSupportedException("The SetSuspendState method is not supported on this system!")
        SetSuspendState(Convert.ToInt32(IIf(hibernate, 1, 0)), Convert.ToInt32(IIf(force, 1, 0)), 0)
    End Sub

    Protected Function CheckEntryPoint(ByVal library As String, ByVal method As String) As Boolean
        Dim libPtr As IntPtr = LoadLibrary(library)
        If Not libPtr.Equals(IntPtr.Zero) Then
            If Not GetProcAddress(libPtr, method).Equals(IntPtr.Zero) Then
                FreeLibrary(libPtr)
                Return True
            End If
            FreeLibrary(libPtr)
        End If
        Return False
    End Function

    Protected Function FormatError(ByVal number As Integer) As String
        Dim Buffer = New StringBuilder(255)
        FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM, IntPtr.Zero, number, 0, Buffer, Buffer.Capacity, 0)
        Return Buffer.ToString()
    End Function
End Class

Public Class PrivilegeException
    Inherits Exception

    Public Sub New()
        MyBase.New()
    End Sub

    Public Sub New(ByVal message As String)
        MyBase.New(message)
    End Sub
End Class

[huronzhu]

各位帮帮忙啊，谢谢了

[沐NeMo]

锁定计算机的状态下，计算机是无法进行任何操作的。
其他的也等大侠来。

[robake]

直接按重启键或关机键或直接拔电源

[beijingbeerman]

锁定情况下是在不同的桌面，这个不能关闭。

[兔子-顾问]

如果用户手工进入锁定状态就没办法。但是你可以用mouse_event或是sendInput这2个api，或是SendKey方法，发送一些无效的屏幕点击或键盘输入，以阻止系统进入休眠模式，屏幕保护。

[兔子-顾问]

进入屏保后，往往默认都是过一段时间锁定计算机的。

[yvhxaypm]

牛B 有没有其他低端方法啊
在锁定状态下，我想知道如何手动快捷键操作关机状态的，当然不希望是直接按电源按钮之类，希望有高手指点一下，谢过咯！

[足球中国]

我很久之前用vb.net写的系统管理工具。菜单里有一秒关机的。你试试。怎么看代码不用我教吧。