Now the deadline is over as it's the 1st of August even in GMT-12. So there is no reason to hide the source code anymore.

Here you go:
http://www.brogames.de/LBGUI/LBGUI.zip
(~687KB)

This is the contest release. It's much smaller than the first two downloads as this doesn't include an exe anymore. I put the other downloads down, as especially in the first demo I gave you there were some small bugs, which are now fixed.

Credits would be nice.