[C++] How can i add a headerfile?

I hav code an IRC-Client, and now i whould like to add it to my Project to use it in an actor. But how can i do this? When i add it in the main directory, my “.h” and “.cpp” File, and inlcude my “.h” file in my actor, i have these error by compiling
fatal error C1083: Datei (Include) kann nicht ge?ffnet werden: “IRC_Client.h”: No such file or directory
Sry, I’m german XD

Hello, a quick google search produced this forum thread that I think might help.

The two things that stood out for me where that you have to make sure it’s in the same folder as your other source files and regenerate your visual studio project from the Unreal Editor.

Sorry, but that don’t helps me

I think, you must know my code…
IRC_Client.h: http://pastebin.com/3a2z6Ax6
IRC_Client.cpp: http://pastebin.com/eXDpL2mU