The X protocol C-language Binding (XCB) is a replacement for Xlib featuring a small footprint, latency hiding, direct access to the protocol, improved threading support, and extensibility.
September 2015: libxcb 1.11.1 was released. This fixes some thread-related issues and adds 64-bit versions of some APIs.
October 2012: New releases of the XCB packages have been published, including autogenerated man pages for XCB API's - see the linked announcements for full details of what's changed in each one:
- You can obtain released versions of XCB from http://xcb.freedesktop.org/dist.
- Follow the instructions from the developer's guide to build, except that you can use released versions of the dependencies, and you don't need git, automake, autoconf, or libtool.
- If you wish to work on XCB, please read the developer's guide.
- Mailing list: Discussion of XCB and Xlib/XCB is through the XCB mailing list.
- IRC: XCB developers also hang out on IRC, and have occasional meetings.
- Of course, there's still a lot to do .
- The XCB API is documented. There is also a tutorial and some random notes.
- People wanting to implement higher level applications can use xcb-util.
- XCB is built atop an XML description of the X core protocol and common extension protocols called XML/XCB. This protocol can be used in other interesting ways. Documentation of the X Window System protocol is also available at X.org's website, and can be used in combination with XCB documentation as XCB functions largely reflect the protocol.
- To aid in porting applications, you can configure Xlib to use XCB for the transport layer. We call this Xlib/XCB.
- There is automatically-generated documentation for the XCB protocol bindings.
- The Windows (32 bit) port of XCB will be merged into the main code base soon. You can read more on that here.