BoxedApp SDK is a DLL that provides a set of functions for emulating a file system and a system registry for an application. Using these functions, you can create virtual files, fake registry entries, keys and values. Add virtual files and your application will "think" that such files really exist. No temporary files are created. You create a virtual DLL file and then load it. Embed any files, DLLs, ActiveX and OCX into your application.