05-29-2015 06:17 AM - edited 05-29-2015 06:18 AM
Attached is an example Visual Studio ACT! plug-in which disables the ATTACH button on the DOCUMENTS tab.
I did this project for a client a few years back. It references two Impact Suite v6 DLLs You may want to install the trial of Impact Suite to get it full running. Or you can just download it and take it apart.
Hope it helps
-- Jim Durkin