Emacs provides a Lisp function called `mouse-position', which returns
the window (in Emacs parlance, a frame) the mouse is currently under, if
it was created by Emacs.
Implementing this function correctly on Haiku requires a way to find the
window underneath the mouse pointer, but I don't see how to get that
information.
It would be nice if a function to obtain that window was added to the
interface kit. Perhaps it would be named BApplication::GetWindowAtPoint
(BPoint), and return the BWindow underneath a given point (or the mouse
pointer location) if it was created by the calling application, or NULL
if it was not.
Thanks in advance.
