DMXQueryVersion - determine DMX extension version
Bool DMXQueryVersion(Display *dpy,
returns version information about the DMX protocol
Any incompatible changes to the protocol will be indicated by a change in
. Small, upward-compatible changes will be indicated by a
change in minor_version
. In general, patch_version
informational purposes and will encode the date of the last protocol revision
If the DMX protocol extension is available, major_version
, and patch_version
will be set, and True
will be returned. Otherwise, False
will be returned.
At the time of this writing, the DMX protocol is at version 2.2.
Version 2.2 was the final development version, and code supporting this version
was submitted to upstream X server repositories in the summer of 2004.
Version 1.5 was the last of the 1.x series, which was used for development
before screen and input addition and removal were supported. Version 2.0 and
2.1 were development versions that partially supported screen and input
addition and removal.
Since we do not expect development versions to be widely used, we recommend that
any software that uses the DMX protocol extension to support only versions 2.2
and above (although they should detect earlier versions and either reduce
functionality or fail gracefully).