My previous suggestion may not have worked out: IUP - GUI for LUA. Here are some more.

murgaLua - new and currently being developed

wxLua - cross-platform, popular, lot's of resources. Even includes DLLs to be used as a Lua Module.

LuaWin - favorite option, impliments Win32 GUI API, seems to be untouched for awhile, I emailed the developer and I am currently waiting a response.

Any Thoughts?

From the LuaWin developer:

"Hi,

the currently online version of luawin will not be developed future.
I have done a complete rewrite using C/Invoke [1] and all the gluecode
to the API is now done in Lua modules, whch makes development easier and
faster.
The new Version has allmost the full functionality of the old luawin and
I'm planing to put a beta version online in a view weeks after I
resolved some small quirks I have with compilation and after writing at
least a bit of an Documentation. ;-)

BR,
Michael

[1]http://www.nongnu.org/cinvoke/index.html"

Thank you for information.
I remember these were out for some reason. Anyway I'll check again.

BTW. IUP worked little with km, plaese check luamacro topic.
Thank you.

I do recall that IUP worked, but I thought there were issues with threading and what not. Also, IUP is already 3 months behind on an update, I'll wait to see what LuaWin can come out with.

From the IUP website on 4/15/07:

"IUP 3.0 is already under development but will be released only about two months after 2.6."

2.6 was released on 4/15/07, which was the first update since 3/31/06.