DMXQueryVersion

DMXQueryVersion(3X)					  DMXQueryVersion(3X)



NAME
       DMXQueryVersion - determine DMX extension version

SYNOPSIS
       #include <X11/extensions/dmxext.h>

       Bool DMXQueryVersion(Display *dpy,
			    int *major_version,
			    int *minor_version,
			    int *patch_version);

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 infor-
       mational	 purposes and will encode the date of the last protocol revi-
       sion (e.g., 20040604).

RETURN VALUE
       If the DMX protocol extension is available, major_version,  minor_ver-
       sion,  and patch_version will be set, and True will be returned.	 Oth-
       erwise, False will be returned.

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  devel-
       opment  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 rec-
       ommend that any software that uses the DMX protocol extension to	 sup-
       port  only versions 2.2 and above (although they should detect earlier
       versions and either reduce functionality or fail gracefully).

SEE ALSO
       DMXQueryExtension(3X), DMX(3X), Xdmx(1)



X.Org				Version 6.8.2		  DMXQueryVersion(3X)