DMXQueryVersion - determine DMX extension version
Contents
Description
DMXQueryVersion() returns version information about the DMX protocol extension.
Any incompatible changes to the protocol will be indicated by a change in major_version. Small, upward-
compatible changes will be indicated by a change in minor_version. In general, patch_version is for
informational purposes and will encode the date of the last protocol revision (e.g., 20040604).
Name
DMXQueryVersion - determine DMX extension version
Notes
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).
Return Value
If the DMX protocol extension is available, major_version, minor_version, and patch_version will be set,
and True will be returned. Otherwise, False will be returned.
See Also
DMXQueryExtension(3), DMX(3), Xdmx(1)
X Version 11 libdmx 1.1.4 DMXQueryVersion(3)
Synopsis
#include<X11/extensions/dmxext.h>BoolDMXQueryVersion(Display*dpy,int*major_version,int*minor_version,int*patch_version);
