Symbian
Symbian OS Library

FAQ-1087 Does Symbian's javax.microedition.lcdui.Canvas implement double buffering?

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Classification: Java Category: J2ME MIDP
Created: 07/12/2004 Modified: 07/12/2004
Number: FAQ-1087
Platform: Symbian OS v7.0, Symbian OS v7.0s, Symbian OS v8.0

Question:
Does Symbian's javax.microedition.lcdui.Canvas implement double buffering?

Answer:
Yes, javax.microedition.lcdui.Canvas is rendered with double buffering on Symbian OS. Therefore the isDoubleBuffered method of Canvas returns true.

    Note as a consequence developers should not implement their own double buffering via createImage, drawImage etc as this will incur an additional overhead.