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Hmmm, should I open up a dedicated thread for refreshing the main information panel?

 
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I've got a main information panel displaying all the sales related figures.
I wonder is it a good idea to open up a separate thread to refresh
this panel every now and again. Or a timer is enough?
Thanks
Jack
 
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Isn't it possible to give your model listeners that get fired when the sales figures change?
 
Jacky Luk
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How would I define such an UpdateEvent and Listener?
Thanks
Jack
 
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