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C interface to the X Window System protocol, which replaces the traditional Xlib interface.
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C 48.4%
Python 42.2%
M4 4%
Makefile 3.5%
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Peter Harris 0ed48e7c4e Don't insert padding between lists in requests 
Lists of types that have the same padding as each other should not have
any padding automatically inserted by libxcb.

Fixes xcb_randr_set_crtc_gamma when "size" is an odd number.

Requires us to loop over all the fields, not just the param fields, so
that we can generate code for <pad align> (which was previously missing,
but went unnoticed because libxcb was always behaving as if a <pad
align="4" /> was present between each list).

Incidentally reduces the number of unnecessary pad entries in the
xcb_parts lists (eg. between lists when the first is a list of CARD32).

Signed-off-by: Peter Harris <pharris2@rocketsoftware.com>
 		2024-08-15 10:11:00 -04:00
doc Improve tutorial example 2022-09-28 22:39:32 +00:00
m4 config: issue an error if DRI3 is requested, but sendfds is not available 2014-08-06 13:26:08 +02:00
man Escape \n to display properly in xcb-requests man page 2015-04-29 23:23:05 -07:00
src Don't insert padding between lists in requests 2024-08-15 10:11:00 -04:00
tests tests: fix -Werror=discarded-qualifiers errors in check_public.c 2024-03-02 11:47:47 -08:00
tools Match only XCB-namespaced XID generators when converting to xcb_generate_id. 2006-10-15 12:34:30 -07:00
.autom4te.cfg Use build-aux as autom4te cache directory 2013-08-15 00:35:07 +02:00
.gitignore gitignore: add files generated by make check 2020-11-18 23:06:32 -05:00
.gitlab-ci.yml gitlab CI: use latest xcbproto from git to build against 2023-08-20 11:36:40 -07:00
COPYING Fix the year in COPYING. 2006-04-27 17:32:20 -07:00
Makefile.am Build DOUBLE-BUFFER extension. 2022-06-02 13:27:48 -04:00
NEWS Release libxcb 1.14 2020-02-22 12:20:08 -08:00
README.md Update README for gitlab migration 2019-02-16 13:41:28 -08:00
autogen.sh autogen: add default patch prefix 2022-07-24 14:26:03 -07:00
check-pc-requires Move internal/private dependencies to Requires.private 2014-10-03 23:53:54 +02:00
configure.ac libxcb 1.17.0 2024-04-15 14:53:31 +00:00
xcb-composite.pc.in Move internal/private dependencies to Requires.private 2014-10-03 23:53:54 +02:00
xcb-damage.pc.in Move internal/private dependencies to Requires.private 2014-10-03 23:53:54 +02:00
xcb-dbe.pc.in Build DOUBLE-BUFFER extension. 2022-06-02 13:27:48 -04:00
xcb-dpms.pc.in Move internal/private dependencies to Requires.private 2014-10-03 23:53:54 +02:00
xcb-dri2.pc.in Move internal/private dependencies to Requires.private 2014-10-03 23:53:54 +02:00
xcb-dri3.pc.in Move internal/private dependencies to Requires.private 2014-10-03 23:53:54 +02:00
xcb-ge.pc.in optionally build the GE extension 2017-03-11 10:51:33 +01:00
xcb-glx.pc.in Move internal/private dependencies to Requires.private 2014-10-03 23:53:54 +02:00
xcb-present.pc.in Add xcb-dri3 dependency to xcb-present.pc.in 2024-03-20 07:06:12 -07:00
xcb-randr.pc.in Move internal/private dependencies to Requires.private 2014-10-03 23:53:54 +02:00
xcb-record.pc.in Move internal/private dependencies to Requires.private 2014-10-03 23:53:54 +02:00
xcb-render.pc.in Move internal/private dependencies to Requires.private 2014-10-03 23:53:54 +02:00
xcb-res.pc.in Move internal/private dependencies to Requires.private 2014-10-03 23:53:54 +02:00
xcb-screensaver.pc.in Move internal/private dependencies to Requires.private 2014-10-03 23:53:54 +02:00
xcb-shape.pc.in Move internal/private dependencies to Requires.private 2014-10-03 23:53:54 +02:00
xcb-shm.pc.in Move internal/private dependencies to Requires.private 2014-10-03 23:53:54 +02:00
xcb-sync.pc.in Move internal/private dependencies to Requires.private 2014-10-03 23:53:54 +02:00
xcb-xevie.pc.in Move internal/private dependencies to Requires.private 2014-10-03 23:53:54 +02:00
xcb-xf86dri.pc.in Move internal/private dependencies to Requires.private 2014-10-03 23:53:54 +02:00
xcb-xfixes.pc.in Move internal/private dependencies to Requires.private 2014-10-03 23:53:54 +02:00
xcb-xinerama.pc.in Move internal/private dependencies to Requires.private 2014-10-03 23:53:54 +02:00
xcb-xinput.pc.in Move internal/private dependencies to Requires.private 2014-10-03 23:53:54 +02:00
xcb-xkb.pc.in Move internal/private dependencies to Requires.private 2014-10-03 23:53:54 +02:00
xcb-xprint.pc.in Move internal/private dependencies to Requires.private 2014-10-03 23:53:54 +02:00
xcb-xselinux.pc.in Move internal/private dependencies to Requires.private 2014-10-03 23:53:54 +02:00
xcb-xtest.pc.in Move internal/private dependencies to Requires.private 2014-10-03 23:53:54 +02:00
xcb-xv.pc.in Move internal/private dependencies to Requires.private 2014-10-03 23:53:54 +02:00
xcb-xvmc.pc.in Move internal/private dependencies to Requires.private 2014-10-03 23:53:54 +02:00
xcb.pc.in Store xcbproto version libxcb was compiled with 2009-05-25 12:20:23 +02:00

README.md

About libxcb

libxcb provides an interface to the X Window System protocol, which replaces the traditional Xlib interface. It has several advantages over Xlib, including:

  • size: small, simple library, and lower memory footprint
  • latency hiding: batch several requests and wait for the replies later
  • direct protocol access: interface and protocol correspond exactly
  • proven thread support: transparently access XCB from multiple threads
  • easy extension implementation: interfaces auto-generated from XML-XCB

Xlib also uses XCB as a transport layer, allowing software to make requests and receive responses with both, which eases porting to XCB. However, client programs, libraries, and toolkits will gain the most benefit from a native XCB port.

More information about xcb is available from our website:

https://xcb.freedesktop.org/

Please report any issues you find to the freedesktop.org bug tracker at:

https://gitlab.freedesktop.org/xorg/lib/libxcb/issues

Discussion about XCB occurs on the XCB mailing list:

https://lists.freedesktop.org/mailman/listinfo/xcb

You can obtain the latest development versions of XCB using GIT from the libxcb code repository at:

https://gitlab.freedesktop.org/xorg/lib/libxcb

For anonymous checkouts, use:

git clone https://gitlab.freedesktop.org/xorg/lib/libxcb.git

For developers, use:

git clone git@gitlab.freedesktop.org:xorg/lib/libxcb.git