OCX32's vs DLLS

I've found some VC source code which is for a project used to make some OCX controls for VB projects.

I'd like to be call the functions that are in the OCX files, but from a non VB program. (like loading a DLL)

Is it difficult (or even possible) to create a DLL from the OCX source code?

You can make an OCX control. .dll's are run in-process of an exe
Look up "Creating a Multithreaded Test Application" which lists how to create both.