我正在使用this sample作爲我正在製作的程序的基礎。在大約618按鍵,方案拋出這個錯誤:程序隨機拋出錯誤(vb.net)
CallbackOnCollectedDelegate was detected
Message: A callback was made on a garbage collected delegate of type 'KeyLogger!KeyLogger.CallBackFunction+DelegateCallBack::Invoke'. This may cause application crashes, corruption and data loss. When passing delegates to unmanaged code, they must be kept alive by the managed application until it is guaranteed that they will never be called.
將引發錯誤的應用程序運行次數最多,但不是每一次,而不是在同一個按鍵計數。從錯誤消息中,我認爲這聽起來像垃圾收集器正在收集委託,我該如何防止這種情況?
我做的程序本質上是該vb.net項目的修改版本,但它並不實際存儲擊鍵。
謝謝你的幫助!內CallBack.vb
代碼:
Option Strict Off
Option Explicit On
Module CallBackFunction
'******************************************************************************************
' Sample for retrieving keystrokes by use of the "kbLog32.dll"
' (c) 2004 by Nadeem Afanah.
'******************************************************************************************
'CallBack function
Delegate Sub DelegateCallBack(ByVal msg As Integer, ByVal wParam As Integer, ByVal lParam As Integer)
Sub CallBack(ByVal msg As Integer, ByVal wParam As Integer, ByVal lParam As Integer)
'here we track only WM_CHAR and WM_KEYDOWN
If msg = WM_KEYDOWN Then
...
End If
End Sub
End Module
守則Declarations.vb:
Option Strict Off
Option Explicit On
Module Declarations
'******************************************************************************************
' Sample for retrieving keystrokes by use of the "kbLog32.dll"
' (c) 2004 by Nadeem Afanah.
'******************************************************************************************
'******************************************************************************************
'DLL declarations
Public Declare Function StartLog Lib "kbLog32" (ByVal hWnd As Integer, ByVal lpFuncAddress As DelegateCallBack) As Integer
Public Declare Sub EndLog Lib "kbLog32"()
'----------------------------------------------------------------------------------------
Declare Function SetWindowPos Lib "user32" (ByVal hWnd As Integer, ByVal hWndInsertAfter As Integer, ByVal x As Integer, ByVal y As Integer, ByVal cx As Integer, ByVal cy As Integer, ByVal wFlags As Integer) As Integer
Declare Function FindWindow Lib "user32" Alias "FindWindowA"(ByVal lpClassName As String, ByVal lpWindowName As String) As Integer
Declare Function FindWindowEx Lib "user32" Alias "FindWindowExA"(ByVal hWnd1 As Integer, ByVal hWnd2 As Integer, ByVal lpsz1 As String, ByVal lpsz2 As String) As Integer
'****************************************************************************************
' Keyboard messages
Public Const WM_KEYUP As Short = &H101s
Public Const WM_KEYDOWN As Short = &H100s
Public Const WM_CHAR As Short = &H102s
Public Const WM_SYSKEYDOWN As Short = &H104s
Public Const WM_SYSKEYUP As Short = &H105s
'SetWindowPos messages
Public Const SWP_NOSIZE As Short = &H1s
Public Const SWP_NOMOVE As Short = &H2s
Public Const HWND_TOPMOST As Short = -1
Public Const SWP_SHOWWINDOW As Short = &H40s
'******************************************************************************************
End Module
隨意改變標題aro這不是很具描述性,我爲此道歉。 – Cyclone 2010-08-23 23:59:48
我認爲需要更多信息。 *(IE:代碼)* – ChaosPandion 2010-08-24 00:00:02
看看版本,我有一個HTML鏈接,但我想HTML鏈接不再允許。我現在使用降價鏈接。 – Cyclone 2010-08-24 00:04:22