Libxext provides an x window system client interface to several extensions to the x protocol.

the supported protocol extensions are:
- double-buffer (dbe), the double buffer extension;
- dpms, the vesa display power management system extension;
- extended-visual-information (evi), an extension for gathering extra
information about the x server's visuals;
- lbx, the low bandwidth x extension;
- mit-shm, the mit x client/server shared memory extension;
- mit-sundry-nonstandard, a miscellaneous extension by mit;
- multi-buffering, the multi-buffering and stereo display extension;
- security, the x security extension;
- shape, the non-rectangular shaped window extension;
- sync, the x synchronization extension;
- tog-cup, the open group's colormap utilization extension;
- xc-appgroup, the x consortium's application group extension;
- xc-misc, the x consortium's resource id querying extension;
- xtest, the x test extension (this is one of two client-side
implementations; the other is in the libxtst library, provided by the
libxtst6 package);
libxext also provides a small set of utility functions to aid authors of client apis for x protocol extensions.

this package contains the development headers for the library found in libxext6. non-developers likely have little use for this package.

more information about x.org can be found at:

this module can be found at git://anongit.freedesktop.org/git/xorg/lib/libxext