Python-xcbgen generates the X protocol C language bindings from XML descriptions.

The XCB library provides an interface to the X Window System protocol, designed to replace the Xlib interface. XCB provides several advantages over Xlib:

* Size: small library and lower memory footprint
* Latency hiding: batch several requests and wait for the replies later
* Direct protocol access: one-to-one mapping between interface and protocol
* Thread support: access XCB from multiple threads, with no explicit locking
* Easy creation of new extensions: automatically generates interface from
machine-parsable protocol descriptions