NAME

       XkbLibraryVersion -  Determines the compatibility of a library at runtime.

SYNOPSIS

       Bool XkbLibraryVersion (int *lib_major_in_out, int *lib_minor_in_out);

ARGUMENTS

       lib_major_in_out
              Specifies and returns the major Xkb library version.

       lib_minor_in_out
              Specifies and returns the minor Xkb library version.

DESCRIPTION

       If an application is dynamically linked, both the X server and the client-side X library must contain the
       Xkb extension in order for the client to use the Xkb  extension  capabilities.  Therefore  a  dynamically
       linked application must check both the library and the server for compatibility before using Xkb function
       calls. A properly written program must check for compatibility between the version  of  the  Xkb  library
       that is dynamically loaded and the one used when the application was built. It must then check the server
       version for compatibility with the version of Xkb in the library.

       If your application is statically linked, you must still check for server  compatibility  and  may  check
       library  compatibility.  (It  is  possible  to compile against one set of header files and link against a
       different, incompatible, version of the library, although this should not normally occur.)

       Pass the symbolic value XkbMajorVersion in  lib_major_in_out  and  XkbMinorVersion  in  lib_minor_in_out.
       These arguments represent the version of the library used at compile time. The XkbLibraryVersion function
       backfills the major and minor version numbers of the library used at run  time  in  lib_major_in_out  and
       lib_minor_in_out.   If  the  versions  of  the  compile  time  and  run  time  libraries  are compatible,
       XkbLibraryVersion returns True, otherwise, it returns False.

       In addition, in order to use the Xkb extension, you must ensure that the  extension  is  present  in  the
       server  and  that  the  server  supports  the  version  of  the  extension  expected  by  the client. Use
       XkbQueryExtension to do this, as described in the next section.

RETURN VALUES

       True           The XkbLibraryVersion returns True if the versions  of  the  compile  time  and  run  time
                      libraries are compatible.

       False          The  XkbLibraryVersion  returns  False  if  the  versions of the compile time and run time
                      libraries are not compatible.

SEE ALSO

       XkbMajorVersion(3), XkbMinorVersion(3), XkbQueryExtension(3)