关机程序实现不了(新手请教)
Imports System.Runtime.InteropServicesImports Microsoft.VisualBasic
Public Class Form1
'调用系统参数
Friend Shared Function GetCurrentProcess() As IntPtr
End Function
Friend Shared Function OpenProcessToken(ByVal h As IntPtr, ByVal acc As Integer, ByRef phtok As IntPtr) As Boolean
End Function
Friend Shared Function LookupPrivilegeValue(ByVal host As String, ByVal name As String, ByRef pluid As Long) As Boolean
End Function
Friend Shared Function AdjustTokenPrivileges(ByVal htok As IntPtr, ByVal disall As Boolean, ByRef newst As TokPriv1Luid, ByVal len As Integer, ByVal prev As IntPtr, ByVal relen As IntPtr) As Boolean
End Function
Friend Shared Function ExitWindowsEx(ByVal 易做图 As Integer, ByVal rea As Integer) As Boolean
End Function
Friend Const SE_PRIVILEGE_ENABLED As Integer = &H2
Friend Const TOKEN_QUERY As Integer = &H8
Friend Const TOKEN_ADJUST_PRIVILEGES As Integer = &H20
Friend Const SE_SHUTDOWN_NAME As String = "SeShutdownPrivilege"
Friend Const EWX_LOGOFF As Integer = &H0 '注销计算机
Friend Const EWX_SHUTDOWN As Integer = &H1 '关闭计算机
Friend Const EWX_REBOOT As Integer = &H2 '重新启动计算机
Friend Const EWX_FORCE As Integer = &H4 '关闭所有进程,注销计算机
Friend Const EWX_POWEROFF As Integer = &H8
Friend Const EWX_FORCEIFHUNG As Integer = &H10
'引用参数
Friend Structure TokPriv1Luid
Public Count As Integer
Public Luid As Long
Public Attr As Integer
End Structure
Private Shared Sub DoExitWin(ByVal 易做图 As Integer)
Dim xc As Boolean '判断语句
Dim tp As TokPriv1Luid
Dim hproc As IntPtr = GetCurrentProcess()
'调用进程值
Dim htok As IntPtr = IntPtr.Zero
xc = OpenProcessToken(hproc, TOKEN_ADJUST_PRIVILEGES Or TOKEN_QUERY, htok)
tp.Count = 1
tp.Luid = 0
tp.Attr = SE_PRIVILEGE_ENABLED
xc = LookupPrivilegeValue(Nothing, SE_SHUTDOWN_NAME, tp.Luid)
xc = AdjustTokenPrivileges(htok, False, tp, 0, IntPtr.Zero, IntPtr.Zero)
xc = ExitWindowsEx(易做图, 0)
End Sub
Public Shared Sub PowerOff()
DoExitWin((EWX_FORCE Or EWX_POWEROFF)) '关闭计算机
End Sub
Private Sub Button1_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles Button1.Click
PowerOff() '关闭计算机
End Sub
End Class
为什么上面这段关机程序实现不了啊,是怎么回事呢,请大家帮忙指点下,谢谢了啊 --------------------编程问答-------------------- 你说的实现不了,是什么问题? --------------------编程问答-------------------- 谢谢楼上回复,就是我运行程序后,不能关机啊,不知道错在哪里啊?请指点啊,谢了 --------------------编程问答-------------------- 晕倒,要发代码,提示我回复内容过长!
我发到博客了,你去看看我的实现:
http://www.cnblogs.com/ajiefj/archive/2010/05/11/1732384.html --------------------编程问答-------------------- 调用方法:
--------------------编程问答-------------------- 谢谢楼上回复,你那个Namespace程序在哪里加啊,请指教啊,谢了 --------------------编程问答-------------------- 大家帮忙看看我的程序是怎么回事呢,万分感谢 --------------------编程问答-------------------- http://topic.csdn.net/t/20060224/12/4574978.html
Private Sub sBtn_Restart_Click(ByVal sender As Object, ByVal e As System.EventArgs)
WindowsController.ExitWindows(SystemManager.RestartOptions.Reboot, False)
End Sub
Private Sub sBtn_HideBar_Click(ByVal sender As Object, ByVal e As System.EventArgs)
'Hide the Task Pane
ShowWindow(FindWindow("Shell_TrayWnd", Nothing), 0)
End Sub
Private Sub sBtn_ShowBar_Click(ByVal sender As Object, ByVal e As System.EventArgs)
'Show Task Pane
ShowWindow(FindWindow("Shell_TrayWnd", Nothing), 5)
End Sub
Private Sub sBtn_ClosePc_Click(ByVal sender As Object, ByVal e As System.EventArgs)
WindowsController.ExitWindows(SystemManager.RestartOptions.ShutDown, False)
End Sub
OpenProcessToken等之类的函数调用后要判断返回值,确认调用是否成功?
不判断不是好习惯
Imports System--------------------编程问答-------------------- shutdown -s -t 1 --------------------编程问答-------------------- -,-这个..是C#的代码么...我咋看不懂 .... --------------------编程问答-------------------- 我以前用C#做过,开始也碰到过问题
Imports System.Text
Imports System.Diagnostics
Imports System.Runtime.InteropServices
Public Class ExitWindwos
Public Enum RestartOptions
LogOff = 0
PowerOff = 8
Reboot = 2
ShutDown = 1
Suspend = -1
Hibernate = -2
'EWX_FORCE = 4
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
Private Declare Function LoadLibrary Lib "kernel32" Alias "LoadLibraryA" (ByVal lpLibFileName As String) As IntPtr
Private Declare Function FreeLibrary Lib "kernel32" (ByVal hLibModule As IntPtr) As Integer
Private Declare Function GetProcAddress Lib "kernel32" (ByVal hModule As IntPtr, ByVal lpProcName As String) As IntPtr
Private Declare Function SetSuspendState Lib "Powrprof" (ByVal Hibernate As Integer, ByVal ForceCritical As Integer, ByVal DisableWakeEvent As Integer) As Integer
Private Declare Function OpenProcessToken Lib "advapi32.dll" (ByVal ProcessHandle As IntPtr, ByVal DesiredAccess As Integer, ByRef TokenHandle As IntPtr) As Integer
Private Declare Function LookupPrivilegeValue Lib "advapi32.dll" Alias "LookupPrivilegeValueA" (ByVal lpSystemName As String, ByVal lpName As String, ByRef lpLuid As LUID) As Integer
Private 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
Private Declare Function ExitWindowsEx Lib "user32" (ByVal uFlags As Integer, ByVal dwReserved As Integer) As Integer
Private 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
Private 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
Private 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
Private 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
Private 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
Private 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
Private 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
Public Sub LogOff() '注销
ExitWindows(RestartOptions.Reboot, False)
End Sub
Public Sub PowerOff() '关闭电源
ExitWindows(RestartOptions.PowerOff, False)
End Sub
Public Sub Reboot() '重启计算机
ExitWindows(RestartOptions.Reboot, False)
End Sub
Public Sub ShutDown() '关闭系统
ExitWindows(RestartOptions.ShutDown, False)
End Sub
Public Sub Suspend() '待机
ExitWindows(RestartOptions.Suspend, False)
End Sub
Public Sub Hibernate() '休眠
ExitWindows(RestartOptions.Hibernate, False)
End Sub
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
执行后屏幕就一闪,接着什么事也没发生
这是进程优先级不够所造成的
补充:.NET技术 , C#