DMXQueryVersion (3)
Leading comments
Copyright 2004 Red Hat Inc., Durham, North Carolina. All Rights Reserved. Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation on the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the followin...
NAME
DMXQueryVersion - determine DMX extension versionSYNOPSIS
#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 informational purposes and will encode the date of the last protocol revision (e.g., 20040604).
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.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).