tkvars(3)	      User Contributed Perl Documentation	     tkvars(3)

NAME
       tkvars - Variables used or set by Tk

DESCRIPTION
       The following perl variables are either set or used by Tk at various
       times in its execution. (For a list of variables used by perl see perl‐
       var.)

       $Tk::library
	   This variable holds the file name for a directory containing the
	   modules related to Tk.  These modules include an initialization
	   file that is normally processed whenever a Tk application starts
	   up, plus other files containing procedures that implement default
	   behaviors for widgets.  The initial value of $Tk::library is set
	   when Tk is added to an interpreter;	this is done by searching
	   searching for a directory named Tk in the directory where the file
	   Tk.pm, or the first directory Tk in @INC.

	   The TK_LIBRARY environment variable used by Tcl/Tk is not supported
	   by perl/Tk.	Please use @INC to change where modules are searched.

	   Note: This is Tcl remnant. With perl it makes more sense to use
	   @INC and %INC).

       $Tk::patchLevel
	   Contains a decimal integer giving the current patch level for Tk.
	   The patch level is incremented for each new release or patch, and
	   it uniquely identifies an official version of Tk.

	   Note: this is Tcl remnant. With perl it makes more sense to use
	   $Tk::VERSION described below.

       $Tk::strictMotif
	   This variable is set to zero by default.  If an application sets it
	   to one, then Tk attempts to adhere as closely as possible to Motif
	   look-and-feel standards.  For example, active elements such as but‐
	   tons and scrollbar sliders will not change color when the pointer
	   passes over them.

       $Tk::VERSION
	   The variable holds the current version number of the perl/Tk
	   release in the form major.minor.  Major and minor are integers.

	   The major version number shows on which Tcl/Tk release perl/Tk is
	   based.  E.g., 402 means based on Tcls Tk 4.2.  (Patchlevel of Tcls
	   Tk are not incorporated because perl/Tk tended  to be ``ahead'' of
	   them on some fixes and behind on others.  The first digest of the
	   major version number increases in any Tk release that includes
	   changes that are not backward compatible (i.e. whenever existing
	   perl/Tk applications and scripts may have to change to work with
	   the new release).

	   The minor version depends on perl/Tk only. It uses the 'even'='sta‐
	   ble', 'odd'='experimental' scheme that linux uses:

	    .0xx  - inherently 'alpha'
	    .1xx  - experimental 'beta'
	    .2xx  - stable
	    .3xx  - experimental
	    .4xx  - stable
	    ...

	   The minor version number increases with each new release of Tk,
	   except that it resets to zero whenever the major version number
	   changes.

       $Tk::version
	   The variable holds the current version number of the Tk library in
	   the form major.minor.  Major and minor are integers.	 The major
	   version number increases in any Tk release that includes changes
	   that are not backward compatible (i.e. whenever existing Tk appli‐
	   cations and scripts may have to change to work with the new
	   release).  The minor version number increases with each new release
	   of Tk, except that it resets to zero whenever the major version
	   number changes.

	   Note: this is Tcl remnant.  With perl it makes more sense to use
	   $Tk::VERSION described above.

KEYWORDS
       variables, version

perl v5.8.8			  2004-02-28			     tkvars(3)

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