busy mouse cursor for application

Hi all,

how can I display the cursor as the watch for the whole application.
When I set it on the toplevel window as
self.toplevel.config(cursor="watch")
it displays the cursor almost everywhere (I believe where the cursor is "")
except for the widgets like Entry, Text that have the cursor="xterm" or anything
that has a custom cursor.

Is there a way to set the "watch" for everything and restore it later on

Vasilis