Embedded GUI Code

I am on a search for an embedded GUI / Windowing / 2-D system. I would
like the source code (in ANSI-C) included in addition to basic drawing
mechanisms (circle, dot, line, rectangle). This needs to be usable on
an embedded system and easily portable. I've looked at uc/GUI from
Micrium and C/PEG from Swell Software. They both look sufficient,
possibly an overkill, but I am wondering what else is out there. Does
anyone have recommendations on other similar projects or opinions on
the two?

Thank you,
--Keith Prickett

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