Java: Detect when user clicks outside the window boundries

I am working on design for a screen video capture program in Java I already have what it takes to create the screenshots and save them with my previous question. Now as an added bonus I would like to know when the user clicks so I can add a vi开发者_JS百科sual indicator that makes it clear where the user clicked and that it was not just a mouseover.

Not really possible in Java, which makes sense: OS routes the mouse event only once, and to the window that's supposed to receive it, so why should you be able to grab it? You could however write some system-level code on the level of OS handling of mouse events...

check this out: Detecting a Mouse Click Anywhere on Screen with Java