get-edit-target-window in top-level-window<%>
Returns the window that most recently had the keyboard focus, either
the top-level window or one of its currently-shown children. If
neither the window nor any of its currently-shown children has even
owned the keyboard focus, #f is returned.
See also
get-focus-window and
get-edit-target-object.
(->senda-top-level-windowget-edit-target-window)window<%>object or#f