Friend Const SE_PRIVILEGE_ENABLED As Integer = H Friend Const TOKEN_QUERY As Integer = H Friend Const TOKEN_ADJUST_PRIVILEGES As Integer = H Friend Const SE_SHUTDOWN_NAME As String = SeShutdownPrivilege Friend Const EWX_LOGOFF As Integer = H 注销计算机Friend Const EWX_SHUTDOWN As Integer = H 关闭计算机Friend Const EWX_REBOOT As Integer = H 重新启动计算机Friend Const EWX_FORCE As Integer = H 关闭所有进程 注销计算机Friend Const EWX_POWEROFF As Integer = H Friend Const EWX_FORCEIFHUNG As Integer = H
_引用参数 Friend Structure TokPriv Luid Public Count As Integer Public Luid As Long Public Attr As IntegerEnd Structure
Private Shared Sub DoExitWin(ByVal flg As Integer) Dim xc As Boolean 判断语句 Dim tp As TokPriv Luid 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 =tp Luid =tp Attr = SE_PRIVILEGE_ENABLED xc = LookupPrivilegeValue(Nothing SE_SHUTDOWN_NAME tp Luid) xc = AdjustTokenPrivileges(htok False tp IntPtr Zero IntPtr Zero) xc = ExitWindowsEx(flg )End Sub
Public Shared Sub Reboot() DoExitWin((EWX_FORCE Or EWX_REBOOT)) 重新启动计算机End Sub
Public Shared Sub PowerOff() DoExitWin((EWX_FORCE Or EWX_POWEROFF)) 关闭计算机End Sub
Public Shared Sub LogoOff() DoExitWin((EWX_FORCE Or EWX_LOGOFF)) 注销计算机End Sub
Dim entTime As Object 保存输入时间Dim xianzaiTime As Object 保存实时时间Dim startTime As Object 保存开始定时时间
注销button 按钮输入code
Private Sub Button _Click(ByVal sender As System Object
ByVal e As System EventArgs) Handles Button ClickLogoOff() 注销计算机End Sub
双击重新启动按钮button 输入code
Private Sub Button _Click(ByVal sender As System Object
ByVal e As System EventArgs) Handles Button Click
Reboot()
End Sub
双击关闭计算机按钮button 输入code
Private Sub Button _Click(ByVal sender As System Object
ByVal e As System EventArgs) Handles Button Click startTime = TimeOfDay If Not IsDate(TextBox Text) Then 用IsData函数判断输入的时间格式MsgBox( 你所输入的不是时间格式 ! 错误 ) ElseentTime = TimeValue(TextBox Text) End If Timer Enabled = True启动定时器 Me WindowState = System Windows Forms FormWindowState Minimized最小化窗体
End Sub
如图
图
双击timer 控件如图
图
输入代码
Private Sub Timer _Tick(ByVal sender As System Object
ByVal e As System EventArgs) Handles Timer Tick xianzaiTime = TimeOfDay If RadioButton Checked Then
If DateDiff(Microsoft VisualBasic DateInterval Second
xianzaiTime entTime)Then 用DateDiff函数判断是否到时间了
End IfEnd If
PowerOff() 关闭计算机End Sub
好了 基本上一个定时关机程序就完成了 接下来加一个超级链接吧!当然对于高手来说可能是废话 但是对于新手来说这也是必备的 这个超级链接当然是我们最喜欢的天极网开发频道了
先创建一个Label控件吧 把它托到窗体上 将text属性设置为天极网开发频道如图
图
接下来需要输入代码了 双击窗体Form
进入Public Class Form 事件
代码
Private Declare Function ShellExecute Lib shell dll
Alias ShellExecuteA (ByVal hwngnd As Integer
ByVal lpOperation As String ByVal lpFile As String
ByVal lpParameters As String ByVal lpDirectory As String
ByVal nShowCmd As Integer) As Integer
如图
图
双击刚才添加的label属性text:(天极网开发频道)中输入以下代码
Private Sub Label _Click(ByVal sender As System Object
ByVal e As System EventArgs) Handles Label ClickShellExecute( open CStr( ) CStr( ) )
End SubEnd Class
OK!全部搞定 按F 键运行如图 所示 选择相应选项后点击(关闭计算机启动定时器按钮)就可以了 现在程序将按照你所设定的时间而启动关闭计算机选项
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