Ok, so I have this DLL that was written in VB that I need to use in a C++ Windows Service.<BR><BR>From what I have looked up, I need three things.<BR><BR>- A header file<BR>- the .lib file<BR>- the ...

This will re-register the concerned DLL file using the Windows OS tool regsvr32.exe. The Regsvr32 tool is a command-line utility that can be used for registering, and un-registering OLE controls as ...

You probably need to declare area() as PASCAL calling convention and with the EXPORT macro so that it is, indeed, exported from your DLL. You'll also have to defeat C++ "name-mangling", so define it ...