how do I tell which widget has the selection

[rob <mailingLists pangolin org uk>]

I have a window which contains mostly gtkEntry widgets and a toolbar
with the usuale cut copy paste buttons. When the user clicks cut/copy i
want to cut/copy text from widget that has the selection (i.e has the
blue highlighted look) to the clipboard but I can't figure out how to
tell what (if any) widget has it.

Anyone know?

thanks rob