Wow, I must have had to fix six things, but now the awesome lighting panel runs identically under ACL and LW on win32. And a problem I had even under ACL with nested windows is gone. Life is good. :) Stepping out for a well-earned pint, but I plan to upload before retiring so Europe has the best possible code to work from. kenny -- http://tilton-technology.com Why Lisp? http://alu.cliki.net/RtL%20Highlight%20Film Your Project Here! http://alu.cliki.net/Industry%20Application