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<H2><A NAME="SECTION0018210000000000000000">
16.2.1 Using Tix</A>
</H2>

<P>
<dl><dt><table cellpadding="0" cellspacing="0"><tr valign="baseline">
  <td><nobr><b><span class="typelabel">class</span>&nbsp;<tt id='l2h-4843' xml:id='l2h-4843' class="class">Tix</tt></b>(</nobr></td>
  <td><var>screenName</var><big>[</big><var>, baseName</var><big>[</big><var>, className</var><big>]</big><var></var><big>]</big><var></var>)</td></tr></table></dt>
<dd>
    Toplevel widget of Tix which represents mostly the main window
    of an application. It has an associated Tcl interpreter.

<P>
Classes in the <tt class="module"><a href="module-Tix.html">Tix</a></tt> module subclasses the classes in the
<tt class="module"><a href="module-Tkinter.html">Tkinter</a></tt> module. The former imports the latter, so to use
<tt class="module"><a href="module-Tix.html">Tix</a></tt> with Tkinter, all you need to do is to import one
module. In general, you can just import <tt class="module"><a href="module-Tix.html">Tix</a></tt>, and replace
the toplevel call to <tt class="class">Tkinter.Tk</tt> with <tt class="class">Tix.Tk</tt>:
<div class="verbatim"><pre>
import Tix
from Tkconstants import *
root = Tix.Tk()
</pre></div>
</dl>

<P>
To use <tt class="module"><a href="module-Tix.html">Tix</a></tt>, you must have the <tt class="module"><a href="module-Tix.html">Tix</a></tt> widgets installed,
usually alongside your installation of the Tk widgets.
To test your installation, try the following:
<div class="verbatim"><pre>
import Tix
root = Tix.Tk()
root.tk.eval('package require Tix')
</pre></div>

<P>
If this fails, you have a Tk installation problem which must be
resolved before proceeding. Use the environment variable <a class="envvar" id='l2h-4844' xml:id='l2h-4844'>TIX_LIBRARY</a>
to point to the installed <tt class="module"><a href="module-Tix.html">Tix</a></tt> library directory, and
make sure you have the dynamic object library (<span class="file">tix8183.dll</span> or
<span class="file">libtix8183.so</span>) in  the same directory that contains your Tk
dynamic object library (<span class="file">tk8183.dll</span> or <span class="file">libtk8183.so</span>). The
directory with the dynamic object library should also have a file
called <span class="file">pkgIndex.tcl</span> (case sensitive), which contains the line:

<P>
<div class="verbatim"><pre>
package ifneeded Tix 8.1 [list load "[file join $dir tix8183.dll]" Tix]
</pre></div>
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<span class="release-info">Release 2.4.2, documentation updated on 28 September 2005.</span>
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