Archived:Additional JAD attribute for changing Canvas updating feature (Known Issue)
A MIDlet can have the device's background image on its background as well. This can be done by using the JAD attribute Nokia-UI-Enhancement and give the value CanvasHasBackground to it. This affects only Canvas that is not in full screen mode but not full-screen Canvas, GameCanvas, or CustomItems.
Add the line Nokia-UI-Enhancement: CanvasHasBackground to the MIDlet's JAD file to take the device's background image to use in the MIDlet.