Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
LogoOff()'注销计算机
End Sub |
双击重新启动按钮button3，输入code:
Private Sub Button3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button3.Click
Reboot()
End Sub |
双击关闭计算机按钮button1,输入code:
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
startTime = TimeOfDay
If Not IsDate(TextBox1.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")
Else
entTime = TimeValue(TextBox1.Text)
End If
Timer1.Enabled = True
'启动定时器
Me.WindowState = System.Windows.Forms.FormWindowState.Minimized
'最小化窗体
End Sub |
如图3
双击timer1控件如图4
输入代码：
Private Sub Timer1_Tick(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Timer1.Tick
xianzaiTime = TimeOfDay
If RadioButton1.Checked Then
If DateDiff(Microsoft.VisualBasic.DateInterval.Second, xianzaiTime, entTime) < 0 Then '用DateDiff函数判断是否到时间了
End If
End 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5
接下来需要输入代码了，双击窗体Form1
进入Public Class Form1事件
代码：
| Private Declare Function ShellExecute Lib "shell32.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6
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 Label3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Label3.Click
ShellExecute(0, "open", "http://dev.yesky.com ", CStr(0), CStr(0), 1)
End Sub
End Class |
OK全部搞定，按F5键运行如图7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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