If you Something has copied, so a text and now I'm at Minecraft, where I'm currently running, then you can indeed by a hotkey combination the copy while running just send in the chat. I think you have to install something else. But I do not know what or how I do it. I do not have it all on Windows, but on Mac OS X, so that could be different again.
I would be happy, if someone briefly explains what you have to install there and how to use it correctly.
As far as I know, this would only work with hacks and they would be banned on servers.
No, but thanks anyway
Can you write your own program for this with Autohotkey, but you need some previous knowledge regarding programming
Ok, but that's already there…