如何使用vb 监控电脑活动记录

Imports System
Imports System.io
Module Module1
 private Declare Sub Sleep Lib "kernel32" Alias "Sleep" (ByVal dwMilliseconds As Long)
 'Win32 Api
 Private Declare Function GetForegroundWindow Lib "user32" () As Long
 Private Declare Function GetWindowText Lib "user32" Alias "GetWindowTextA" (ByVal hwnd As Long, ByVal lpString As String, ByVal cch As Long) As Long
 
 Sub Main()
	 
  Dim bt As Boolean = True
	 ' 保存标题文本
  Dim stext As String
	 ' 保存上一个窗口句柄
	 Dim hwnd As Long
	 ' 保存当前窗口句柄
	 Dim curHwnd As Long
	 ' 书写流写入日志文件
	 Dim sw As StreamWriter
	 ' 日志文件保存路径
	 Dim path As String = "c:\log.txt"
	 
	 ' 如果存在日志文件则跳过，否则创建一个日志文件
	 If Not File.Exists(path) Then
		 File.Create(path)
	 End If
	 
	 sleep(3000)
	 
	 ' 这里是个死循环 
	 While bt
	 
	  stext = Space(255)
		 ' 获取当前窗口句柄
		 hwnd = GetForegroundWindow
		 
		 ' 如果当前是新窗口则写入新窗口标题
		 If hwnd <> curHwnd Then 
		  curHwnd = hwnd
				' 获取窗口标题
				GetWindowText(hwnd,stext,255)
				
				sw = System.IO.File.AppendText(path)
				
				' 写入新窗口标题,格式 yyyy年mm月dd日 hh:hh:ss + 标题
				Using sw
					sw.WriteLine(String.Format("{0:F}", DateTime.Now) +" "+ stext) 
					sw.Flush() 
				End Using
				
		
		 End If
sleep(2000)
		 
  End While
	 
 End Sub
End Module

Dim ws 
set ws = WScript.createObject("WScript.shell") 
ws.Run "C:\listener.exe", 0, TRUE