Re: Drawing in images?

[Jason Rumney]

Stefan Monnier wrote:
> Maybe a good way to do it would be to allow stacking images (in your
> case, the bottom one could use any image library, and the top one could
> use SVG to draw the region boundary).
>   

For this use case at least, this method seems cleaner than changing the 
actual image, since the overlaid rectangle is transient.  I wonder if 
compose-character has some of the code you need already?