Here are the classes, structs, unions and interfaces with brief descriptions:

CXQC_DynamicContext
CXQC_ErrorHandler	The ::XQC_ErrorHandler struct is designed to be populated by users for the purpose of collecting more detailed error messages from an XQC implementation
CXQC_Expression	The ::XQC_Expression struct represents a prepared query, and allows the user to execute that query any number of times
CXQC_Implementation	The ::XQC_Implementation struct provides factory functions for preparing queries
CXQC_InputStream	The ::XQC_InputStream struct is designed to be populated by users for the purpose of streaming data into an XQC implementation
CXQC_Sequence
CXQC_StaticContext	The ::XQC_StaticContext struct provides a way to specify values for the static context of the query to be prepared