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Is there a restriction about where to use repaint() ?  RSS feed

 
Sergio Campos J.
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Is there a restriction about where to use repaint()

I mean, should it be called only from inside Keypressed method
or I can use it from a method of my own?

I have a midlet in which repaint() seems to work only inside Keypressed method.
But I'm trying to control all the program flow from a method called Main.

Thanks for any help...
 
Mohamed Sanaulla
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repaint() method has to be called by using the corresponding JPanel/which ever class which provides that method. or from within the class which overrides the class having repaint() method.

Sergio CamposJ wrote: I have a midlet in which repaint() seems to work only inside Keypressed method.


Midlet- mobile application?
 
Sergio Campos J.
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Mohamed Sanaulla wrote:Midlet- mobile application?


Yes, I'm using a Canvas.
 
Mohamed Sanaulla
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Sergio CamposJ wrote:
Mohamed Sanaulla wrote:Midlet- mobile application?


Yes, I'm using a Canvas.


I dont know how it behaves in a Canvas. May be this is related to Java ME?
 
Rob Spoor
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It is, so I'll move it to our Java ME forum.

In Swing / AWT, there are only two restrictions on calling repaint():
1) do it from the Event Dispatcher Thread.
2) make sure you don't get into an infinite repaint loop (e.g. by calling repaint while you're already painting).
 
It is sorta covered in the JavaRanch Style Guide.
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