AddressOf in VB4

Hi

How do I refer to callback functions in Visual Basic 4.0?
I know that it's done via AddressOf in version 5, but I don't have a clue as of VB4.

Thanks

You can't in VB4 without using an external DLL (I think).

Using DLL's? I have not heard of that, but if you can, you would have to use C++ to make it as VB can only make OLE DLL's.