Windows Template Library - Licensing

Licensing

While WTL is a template library and therefore code-based, the original license was similar to the one used for the Microsoft Foundation Class Library (MFC) source code, although it contained no usage or distribution restrictions. In 2004 Microsoft made the complete source code available under the Common Public License and released it through SourceForge. Since version 7.5, the library is also dual licensed under the Microsoft Public License.

Read more about this topic:  Windows Template Library