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'\" Copyright (c) 1993-1998  Lucent Technologies, Inc.

'\"

'\" See the file "license.terms" for information on usage and redistribution

'\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.

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'\" RCS: $Id: itkvars.n,v 1.1.1.1 2002-01-16 10:24:47 markom Exp $

'\"

.so man.macros

.TH itkvars n 3.0 itk "[incr\ Tk]"

.BS

'\" Note:  do not modify the .SH NAME line immediately below!

.SH NAME

itkvars \- variables used by [incr\ Tk]

.BE

.SH DESCRIPTION

.PP

The following global variables are created and managed automatically

by the \fB[incr\ Tk]\fR library.  Except where noted below, these

variables should normally be treated as read-only by application-specific

code and by users.

.TP

\fBitk::library\fR

When an interpreter is created, \fB[incr\ Tk]\fR initializes this

variable to hold the name of a directory containing the system library

of \fB[incr\ Tk]\fR scripts.  The initial value of \fBitk::library\fR

is set from the ITK_LIBRARY environment variable if it exists,

or from a compiled-in value otherwise.

.sp

When \fB[incr\ Tk]\fR is added to an interpreter, it executes

the script "\fCinit.itk\fR" in this directory.  This script,

in turn, looks for other script files with the name "\fCinit.\fIxxx\fR".

Mega-widget libraries will be automatically initialized if they

install a script named "\fCinit.\fIxxx\fR" in this directory,

where "\fIxxx\fR" is the name of the mega-widget library.

For example, the \fB[incr\ Widgets]\fR library installs

the script "\fCinit.iwidgets\fR" in this directory.

This script establishes the "iwidgets" namespace, and sets

up autoloading for all \fB[incr\ Widgets]\fR commands.

.SH KEYWORDS

itcl, itk, variables