hi, this is Nasir Mehmood. I am a software engineer and have more than 20 years of development experience in embedded systems, database design, web design, graphics, and mobile applications. i have extensive knowledge of working with assembly, c, c++,vc++ .net,Objective C,C#, Swift, java and vb .net. I have gone through the details of your requirement. Almost all CAD software are build using C/C++ so creating any utility for existing CAD application is easy with vc++ .net and the required SDK. i have worked with numerous projecct for creating DLL, plugin and utilities for different CAD and Adobe applicaiton, so I offer you my expertise for your solution. if you are interested in working with me then feel free to contact me for further details. thanks