Cross platform global hotkey application that I could package with my application?

So, I have cross platform application that I made, I need to fire it off on a global key command, which the sdk I am using is not able to do. I was wondering if there is any existing app that I could package with my app to act as the global hotkey manager for my application (license that would allow that). The problem开发者_如何学JAVA is the cross-platform side of it. I have found many apps, but I have found ones for Windows, OS X or Linux/Gnome individually. Is there anything that is all of these in one?