From: CC on
To MATLAB trainers,
Regarding training course ML04 (MATLAB for building GUI 2009R3) ML04 calculator example. Why is it the callback field of the "Help\About Calculator ML04 Ctrl-G" shows blank but the callback will work? That is, it still display "Isn't this funnnnnnnn!". I thought one has to put in the appropriate callback string via the property inspector for it to work.
Some hints would be helpful.

Thanks,
CC