XkbLibraryVersion(3)						   XKB FUNCTIONS					      XkbLibraryVersion(3)

NAME

       XkbLibraryVersion -  Determines the compatibility of a library at runtime.

SYNOPSIS

       Bool XkbLibraryVersion ( lib_major_in_out, lib_minor_in_out )
	     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 possi-
       ble 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, XkbLi-
       braryVersion 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)

X Version 11							   libX11 1.2.1 					      XkbLibraryVersion(3)