How to record mouse events on other objects?

[kagohaik]

Dear all,

Assume we have 3 buttons from an application: A, B, and C.

Now I want to record the mouse events on the buttons using another application. For example, if the user clicked button A first, then C, then B, the application should give us a report like the following:

clicked A
clicked C
clicked B

!!!NOTE: The requirement is that you cannot alter the code of the buttons because it was developed by someone else.

This problem bothered me a lot and I still cannot find a way to do it.
Could someone help me?

Thanks in advance!