menu detection

[Mark_Clayton]

Is there a way to detect that a user has tapped the
menu button?  I have an app that updates the screen
every 5 seconds.  I need to be able to detect when the
menu is displayed to disable the updating.  Otherwise
the call to redraw the screen corrupts the displayed
menu.  I didn't see an appropriate event (besides the
penDown event).  Any suggestions?

Much Thanks,
Mark Clayton