Did you tried my example that I give in parallel post?? Do you receive same screenshot as mine? (to run, you need save my code as file, run 'wish' on it, and you should see mine screenshot)
I saved the sample code to tksample.tk and simply ran "wish tksample.tk".
On Solaris 8, this didn't work for me. It displayed the 6 lines between the quotes verbatim without any translation. Did I overlook something?
Regarding the widget demos that had the Unicode text demo, they were run on each OS using the respective Activeperl 5.8.4 for each OS. There shouldn't be any Solaris/Linux incompatibility problems running widget.