I am having trouble determining the level of support provided for "XML Schema API" in Xerces-C. It seems some support is available... "This specification is implemented in Apache Xerces2 Java Parser. There is also a C++ binding and implementation for this specification in Apache Xerces C++ Parser." -- (http://www.w3.org/Submission/2004/SUBM-xmlschema-api-20040122/)
However, I am having trouble locating this capability in the API or finding any examples of its use.
