Team Eiffel

The Windows Eiffel Library (part of EiffelStudio) is migrating to Unicode. Here's a summary of the migration strategy:

• Starting from the 5.7.0826 development release, WEL has switched from being ASCII based to Unicode.
• All WEL routines that used to have an argument of STRING have been changed to STRING_GENERAL, which is a common ancestor to STRING and STRING_32 (the Unicode version of STRING).
• All WEL queries whose return type was STRING now return a STRING_32.
• For the 5.7 release, STRING_32 will convert to STRING.
• In the 5.8 release, this conversion will be made obsolete and in 5.9 it will be gone.
• This gives users some time to migrate their code.
• The migration strategy page at the EiffelStudio wiki gives more details, and describes handling for cases where STRING was used as an actual generic parameter

Although I'm not currently running Windows, back in the day I did use WEL and found it to be the most solid Eiffel Windows library that I had encountered.