Is there any way to track mouse Entered & mouse Exited without a window in Tiger?

FROM : cai qin
DATE : Tue Feb 19 22:14:29 2008

I got a view which would be attached to the menu. And something I need to
track the mouse Entered & Exited message in that view.I find some piece of
code in documentation said that a window will manage all the tracking
rectangle.
So I wonder if I attach my view in menu item, is that mean I can't tracking
the mouse Entered & Exited message?
Is there any way to track mouse Entered & mouse Exited without a window in
Tiger?