Interesting solution Richard, thanks for showing how you solved your display issue.
Taifun's explanation of how to save a canvas as an image is here:
http://puravidaapps.com/snippets.php#2canvassave.
You asked about if background is a canvas then that canvas can be saved as image. Yes. and put that as abackground image to canvas 2. It works, the image replaces whatever was there. The first cod block with Button 8 does that. More exciting is saving two images as sprites, then you can do this:


...a simple animation. What the screen shows is three Canvas controls. The bottom one is a Canvas with two sprites..the button allows movement of the cloud image over the android.
Regards,
Steve