It's called COM and it work. Yes, it need to be registrated so you will need a setup to install them correctly.

Look the DEFINE CLASS command in the help file (specially the OLEPUBLIC clause). You can also take a look at Automation Servers.

>Has anyone created and used a VFP DLL in a VFP application?
>
>I'm considering doing this in order to reduce the VFP exe size. I figure that the stuff in the DLL will be code that has been around for years and does not change. I'm hoping that the VFP exe can call the functions in the DLL.
>
>Will this work or am I dreaming?
>Does the DLL need registering?
>
>I can't find anything in the VFP help that show how to use a VFP DLL from VFP.