> if you use a PDF, it has the resolution independence, but will look fuzzy at 
> non-native resolutions


But if a PDF contains only vector graphics elements it has no native resolution 
so it should scale to any size reasonably well.  Just don't put any bitmaps in 
there.

Here's a simple example:

http://img819.imageshack.us/img819/8696/screenshot20100627at094.png

This was created as a vector graphic and scaled at display time.  As you can 
see, it looks pretty good.   Perhaps not as sharp as a pixel-perfect bitmap but 
good enough for me.  The image is just the green bit (space was at a premium!). 
 And in fact it's not as good as it could be because it goes via an 
intermediate bitmap for cross-platform reasons.  Using the PDF direct might 
look a bit better still.

Regards,

Paul Sanders.
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