TAB and Enter key in Tkinter

[Scott Holmes]

I've noticed that widgets in a Pmw toplevel are navigated by tab key.  I 
find I can tab between the entry fields and the buttons but hitting the 
enter key after moving to a button does not activate the button.  If 
possible, how do I configure buttons to accept and enter key event?
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Scott Holmes                   http://sholmes.ws
                                http://pages.sbcglobal.net/scottholmes
                                scottholmes at sbcglobal.net

   Independent Programmer/Analyst                  Passport 4GL
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