Change the Cursor Image on Mac irrespective of which applicatoin is on Top

I want to Change the Cursor Image on Mac irrespective of which application is on Top or in focus.

Can some one direct to related source code or some hints would be helpful?

I am using Carbon, C++

Than开发者_运维问答ks Rahul

I don't think it is possible, and I think that is a good thing. The cursor image often provides information from the current application to the user, and background apps should not interfere with that communication.