XineramaQueryVersion(3X11)

     NAME
          XineramaQueryVersion - return the version numbers of the
          Xinerama extension

     SYNTAX
          #include <X11/extensions/Xinerama.h>

          Status XineramaQueryVersion(
            Display *dpy,
            int     *major_version,
            int     *minor_version
          );

     ARGUMENTS
          dpy  Specifies the connection to the X server.

          major
               Returns major version number of the Xinerama extension
               supported by the X server.

          minor
               Returns minor version number of the Xinerama extension
               supported by the X server.

     DESCRIPTION
          XineramaQueryVersion returns the major and minor version
          number of the Xinerama extension implemented by the server
          associated with connection dpy.

          XineramaQueryVersion returns True if the version of the
          Xinerama library and Xinerama server are compatible, False
          otherwise.  major_version and minor_version are not updated
          when False is returned.

     DIAGNOSTICS
          BadImplementation
               The X client library uses an older version of the
               Xinerama protocol that is not supported by the X
               server.

     BUGS
          In order to conform to Xorg's proposal of a Xinerama
          standard, there is a protocol incompatibility between the
          Xinerama versions 1.0 (IRIX 6.5.10) and 1.1 (IRIX 6.5.11)
          and the Xinerama versions 1.2 and later (IRIX 6.5.12 and
          later).  XineramaQueryVersion traps this protocol
          incompatibility in version 1.2 and later.

          The following message is printed to STDOUT:
            "Xinerama server version X.x uses non-standard protocol"
          if the protocols used by the X client library and X server
          are not compatible (i.e. the Xinerama library is version 1.2
          or later and the Xinerama server is version 1.0 or 1.1).
          XineramaQueryVersion will accompany this error with a return
          value of False.

          The following message is written to the SYSLOG of the X
          server machine:
            "Xinerama client library version Y.y uses non-standard
            protocol"
          if the protocols used by the X client library and X server
          are not compatible (i.e. the Xinerama server is version 1.2
          or later and the Xinerama library is version 1.0 or 1.1).
          The X server will throw a BadImplementation error, and
          XineramaQueryVersion will return False.

          A workaround for this protocol incompatibility is to use a
          client and server that both support the same Xinerama
          version.

     SEE ALSO
          Xinerama(3X11), XineramaQueryExtension(3X11).