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Index › Programming Questions & Help › Programs › Updating the screen from event handler
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Updating the screen from event handler (Read 307 times)
Ilu
Updating the screen from event handler
Aug 26th, 2008, 10:31am  
Hi,

I use processing to create an interactive graphical representation of data stored in a database.

loading the datasets sometimes needs a little time and I would like to show the user something like a progress bar while the data is retrieved.

The updates to the data happens in mousePressed() and there seems to be no calls to draw() in that time.

Is there a way to update the screen from mousePressed() without doing all the hassle of backgrounding the data retrieval into an own thread?

regards
 Ilu
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fry
Re: Updating the screen from event handler
Reply #1 - Aug 26th, 2008, 2:50pm  
Mouse and keyboard events are queued so that they run at the end of draw(), specifically to deal with the issue you cite.
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