A couple of Everything IPC projects with source code:
Clarion language module:
http://www.voidtools.com/Clarion_Everything.zip
Clarion help:
http://www.voidtools.com/Everything/wiki/Clarion
Command line interface:
http://www.voidtools.com/es-src.zip
IPC help:
http://www.voidtools.com/Everything/wiki/IPC