Sketchup.read_default Does appear to be limited, it won't read any Windows settings, nor SketchUp settings.

Hi, has anyone tried this on Mac OSX (10.6)? For SWIG I did the standard: ./configure, make, make install. but when i try to CMake your examples above i get this: swig error : Unrecognized option -initname swig error : Unrecognized option Example for -initname "Example" in CMakeList.txt also if i remove that it doesn't get better. I tried SWIG versions 2.0.0 and 1.3.40 with no luck, and I have ruby 1.8.7 (so should be no problems here...). Please help, Thank you.

Depends what you intend. If you mean when an OSX user swap between model windows - then no, there is no such observer. But there is an observer that informs you when the user opens or makes a new model: http://code.google.com/apis/sketchup/docs/ourdoc/appobserver.html

Works great, thanks so much! I guarantee I would not have gotten that on my own. (PS I went with option 2 because the user can still move them on their own.) Thanks a lot, Dan