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C/C++ code:
typedef VOID (__stdcall *DL_AUTOCALLBACK )( DWORD dw1, DWORD dw2, LPVOID lpContext );

int Set( IN HANDLE hCamera, IN BOOL bAE,
IN BYTE btTarget, IN DL_AUTOCALLBACK pfCallback, IN LPVOID lpContext );


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VB code:

Public Declare Function Set _'ÉùÃ÷
Lib "XX.dll" (ByVal hCamera As Long, ByVal bAE As Boolean, ByVal btTarget As Byte, _
ByVal pfCallback As Long, ByVal lpContext As Long) As Integer
Public Function AECallback(ByVal dw1 As Long,ByVal dw2 As Long, ByRef lpContext As Long)'Ò»µ½Õâ¾Í»á³ö´í
Dim val As Integer
¡­¡­¡­¡­
AECallback = 0
End Function
Set m_hDevice, True, 180, AddressOf XX.AECallback, MainForm.hWnd'ÕâÊÇÎҵĵ÷ÓÃ

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DWORD Ϊunsigned longÀàÐÍ
LPVOID Ϊvoid*
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