学会一个函数就可以简单实现了,GetAsyncKeyState 下面有个小例子,自己看看再修改一下就可以了,这个函数在窗体没有焦点的时候也起作用,用一个Timer控件配合就可以了! 'In a module Public Const DT_CENTER = &H1 Public Const DT_WORDBREAK = &H10 Type RECT Left As Long Top As Long Right As Long Bottom As Long End Type Declare Function DrawTextEx Lib "user32" Alias "DrawTextExA" (ByVal hDC As Long, ByVal lpsz As String, ByVal n As Long, lpRect As RECT, ByVal un As Long, ByVal lpDrawTextParams As Any) As Long Declare Function SetTimer Lib "user32" (ByVal hwnd As Long, ByVal nIDEvent As Long, ByVal uElapse As Long, ByVal lpTimerFunc As Long) As Long Declare Function KillTimer Lib "user32" (ByVal hwnd As Long, ByVal nIDEvent As Long) As Long Declare Function GetAsyncKeyState Lib "user32" (ByVal vKey As Long) As Integer Declare Function SetRect Lib "user32" (lpRect As RECT, ByVal X1 As Long, ByVal Y1 As Long, ByVal X2 As Long, ByVal Y2 As Long) As Long Global Cnt As Long, sSave As String, sOld As String, Ret As String Dim Tel As Long Function GetPressedKey() As String For Cnt = 32 To 128 'Get the keystate of a specified key If GetAsyncKeyState(Cnt) <> 0 Then GetPressedKey = Chr$(Cnt) Exit For End If Next Cnt End Function Sub TimerProc(ByVal hwnd As Long, ByVal nIDEvent As Long, ByVal uElapse As Long, ByVal lpTimerFunc As Long) Ret = GetPressedKey If Ret <> sOld Then sOld = Ret sSave = sSave + sOld End If End Sub'In a form Private Sub Form_Load() 'KPD-Team 1999 'URL: http://www.allapi.net/ 'E-Mail: [email protected] Me.Caption = "Key Spy" 'Create an API-timer SetTimer Me.hwnd, 0, 1, AddressOf TimerProc End Sub Private Sub Form_Paint() Dim R As RECT Const mStr = "Start this project, go to another application, type something, switch back to this application and unload the form. If you unload the form, a messagebox with all the typed keys will be shown." 'Clear the form Me.Cls 'API uses pixels Me.ScaleMode = vbPixels 'Set the rectangle's values SetRect R, 0, 0, Me.ScaleWidth, Me.ScaleHeight 'Draw the text on the form DrawTextEx Me.hDC, mStr, Len(mStr), R, DT_WORDBREAK Or DT_CENTER, ByVal 0& End Sub Private Sub Form_Resize() Form_Paint End Sub Private Sub Form_Unload(Cancel As Integer) 'Kill our API-timer KillTimer Me.hwnd, 0 'Show all the typed keys MsgBox sSave End Sub
这样 的东西多了,自己找。
'In a module
Public Const DT_CENTER = &H1
Public Const DT_WORDBREAK = &H10
Type RECT
Left As Long
Top As Long
Right As Long
Bottom As Long
End Type
Declare Function DrawTextEx Lib "user32" Alias "DrawTextExA" (ByVal hDC As Long, ByVal lpsz As String, ByVal n As Long, lpRect As RECT, ByVal un As Long, ByVal lpDrawTextParams As Any) As Long
Declare Function SetTimer Lib "user32" (ByVal hwnd As Long, ByVal nIDEvent As Long, ByVal uElapse As Long, ByVal lpTimerFunc As Long) As Long
Declare Function KillTimer Lib "user32" (ByVal hwnd As Long, ByVal nIDEvent As Long) As Long
Declare Function GetAsyncKeyState Lib "user32" (ByVal vKey As Long) As Integer
Declare Function SetRect Lib "user32" (lpRect As RECT, ByVal X1 As Long, ByVal Y1 As Long, ByVal X2 As Long, ByVal Y2 As Long) As Long
Global Cnt As Long, sSave As String, sOld As String, Ret As String
Dim Tel As Long
Function GetPressedKey() As String
For Cnt = 32 To 128
'Get the keystate of a specified key
If GetAsyncKeyState(Cnt) <> 0 Then
GetPressedKey = Chr$(Cnt)
Exit For
End If
Next Cnt
End Function
Sub TimerProc(ByVal hwnd As Long, ByVal nIDEvent As Long, ByVal uElapse As Long, ByVal lpTimerFunc As Long)
Ret = GetPressedKey
If Ret <> sOld Then
sOld = Ret
sSave = sSave + sOld
End If
End Sub'In a form
Private Sub Form_Load()
'KPD-Team 1999
'URL: http://www.allapi.net/
'E-Mail: [email protected]
Me.Caption = "Key Spy"
'Create an API-timer
SetTimer Me.hwnd, 0, 1, AddressOf TimerProc
End Sub
Private Sub Form_Paint()
Dim R As RECT
Const mStr = "Start this project, go to another application, type something, switch back to this application and unload the form. If you unload the form, a messagebox with all the typed keys will be shown."
'Clear the form
Me.Cls
'API uses pixels
Me.ScaleMode = vbPixels
'Set the rectangle's values
SetRect R, 0, 0, Me.ScaleWidth, Me.ScaleHeight
'Draw the text on the form
DrawTextEx Me.hDC, mStr, Len(mStr), R, DT_WORDBREAK Or DT_CENTER, ByVal 0&
End Sub
Private Sub Form_Resize()
Form_Paint
End Sub
Private Sub Form_Unload(Cancel As Integer)
'Kill our API-timer
KillTimer Me.hwnd, 0
'Show all the typed keys
MsgBox sSave
End Sub