Using AddressOf to call function in VC++ DLL from VB
Posted on 2006-06-21
Been given a third party DLL written in Visual C++
This DLL have a method to enable a client to give the address of a callback method.
A DLL's background thread calls the client's callback when some events occur.
I am given the following details, not sure what to make of it since i do not know VC++ :-
int openDevice(int typ, CALLBACKBCOM cbf, void* param=NULL)
where the parameters
cbf specifies the user callback procedure with definition: typedef void (CALLBACKCOM)(int nStatus, int nTracks)
How can i write a VB program to get data making use of the operator AddressOf? I am not familiar with VB's CallBack although i have gone through some samples on this site.
Some sample code would be appreciated.