vb点虐 2008拦截关机或注销消息

在SystemEvents类中 可以 用户试图注销或关闭系统时发生。 (当用户试图注销或关闭系统时发生。当用户试图注销或关闭系统时发生。) 这个 事件处理函数中 可以找到如下方法

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Private Shared WM_QUERYENDSESSION As Integer = H11

Private Shared systemShutdown As Boolean = False

Protected Overrides Sub WndProc(ByRef m As System.Windows.Forms.Message)

If m.Msg = WM_QUERYENDSESSION Then

'MessageBox.Show("queryendsession: this is a logoff, shutdown, or reboot")

systemShutdown = True

End If

' If this is WM_QUERYENDSESSION, the closing event should be raised in the base WndProc.

MyBase.WndProc(m)

End Sub 'WndProc

Private Sub Form1_Closing(ByVal sender As System.Object, ByVal e As System.ComponentModel.CancelEventArgs) Handles MyBase.Closing

If (systemShutdown) Then

' Reset the variable because the user might cancel the shutdown.

systemShutdown = False

If (System.Windows.Forms.DialogResult.Yes = _

MessageBox.Show("My application", "Do you want to save your work before logging off?", MessageBoxButtons.YesNo)) Then

e.Cancel = True

Else

e.Cancel = False

End If

End If

End Sub

怎样用vbs命令禁止关机

代码如下，复制到记事本保存，然后修改文件名后缀为.reg，然后双击运行

（或者复制到记事本另存为文件类型选“所有文件”，文件名填“xx.reg”）

Windows Registry Editor Version 5.00

[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer]

"noclose"=dword:01

[HKEY_CURRENT_USER\Software\Policies\Microsoft\Windows\System]

"DisableCMD"=dword:02

[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\System]

"DisableTaskMgr"=dword:01

[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer]  

"NoViewContextMenu"=dword:01

"NoTrayContextMenu"=dword:01

"NoChangeStartMenu"=dword:01

代码解释：

第一段是固定声明，下面空一行

第二段是禁关机重启

第三段是禁cmd

第四段是禁任务管理器

第五段是禁右键

如果要彻底封杀的话，还应该禁止注册表和组策略以及vbs等，附禁止代码列表：

如何在编的VB.NET程序使用时关闭电脑

有两种方法，第一种是调用shutdown.exe

shell("shutdown.exe路径

-s

-t

0")

'-t是延迟时间，0表示立刻关机

另一种就是使用API了，好像是ExitWindow，你可以去搜索一下其用法。

小技巧：VB.NET实现关机和重新启动

Private Declare Function ExitWindowsEx Lib user (ByVal uFlags As Integer ByVal dwReserved As Integer) As IntegerConst EWX_FORCE As Short = Const EWX_LOGOFF As Short = Const EWX_REBOOT As Short = Const EWX_SHUTDOWN As Short = Dim retval As Integer 定义Esc按键Const VK_ESCAPE As Short = H BsPrivate Sub Command _Click(ByVal eventSender As System Object ByVal eventArgs As System EventArgs) Handles Command ClickIf Option Checked Then 注销当前用户retval = ExitWindowsEx(EWX_FORCE )ElseIf Option Checked Then 关闭计算机retval = ExitWindowsEx(EWX_SHUTDOWN )ElseIf Option Checked Then 重新启动retval = ExitWindowsEx(EWX_REBOOT )End IfEnd SubPrivate Sub Command _Click(ByVal eventSender As System Object ByVal eventArgs As System EventArgs) Handles Command ClickMe Close()End Sub 按Esc键时 结束应用程序Private Sub Form _KeyPress(ByVal eventSender As System Object ByVal eventArgs As System Windows Forms KeyPressEventArgs) Handles MyBase KeyPressDim KeyAscii As Short = Asc(eventArgs KeyChar)If KeyAscii = VK_ESCAPE ThenMe Close()End IfIf KeyAscii = TheneventArgs Handled = TrueEnd IfEnd Sub本实例通过使用ExitWindowEx()API函数来达到关机和重新启动的目的 在ExitWindowEx()函数中 参数uFlags指定要进行何种操作 在表 中列出了参数uFlags的值及其说明 表 　参数uFlags的值及说明 lishixinzhi/Article/program/net/201311/13585

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