Extending DLL's / Creating them
Hello,
I am looking to either extend some current DLL's or to simply create my own from scratch. Firstly is it possible/allowed to extend other peoples Plugins? Secondly how would one go about making (or extending) a plugin. I dont know what these plugin's are written in nor any kind of format that they should follow or use, so I basically know nothing about them, but I'm pretty certain that for my project I am going to need to get involved with this kind of thing.
Thanks in advance for any help anyone can offer!
Hayden Devlin