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<table width="100%" cellpadding=5 cellspacing=0 border=0 class="navtopbg"><tr><td><font size="1"><p class="navtitle"><a href="8.html" class="navtitle">Web Development</a> &gt; <a href="0672319942.html" class="navtitle">Python Developer's Handbook</a> &gt; <a href="206.html" class="navtitle">15. Tkinter</a> &gt; <span class="nonavtitle">Introduction to Tcl/Tk</span></p></font></td><td align="right" valign="top" nowrap><font size="1"><a href="main.asp?list" class="safnavoff">See All Titles</a></font></td></tr></table>
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				<h3>




Introduction to Tcl/Tk</h3>
				<p>Tk is a popular and endorsed toolkit developed by <a NAME="idx1073748320"></a>John Ousterhout that can handle windows, GUI events, and user interactions. This toolkit is provided as an extension for Tcl. That is why part of Tkinter is an interface to Tcl. Without these routines, the management of a GUI environment would require an application with many lines of code.</p>

				<p>The toolkit was originally developed at the University of California, Berkeley, to be a supplement to Tcl (a language also developed by Ousterhout). After his transition to Sun Microsystems, he started a firm called Scriptics (currently known as Ajuba) just to take care of the Tk and Tcl development projects.<a NAME="idx1073748321"></a>
					<a naME="idx1073748322"></A>
					<A name="idx1073748323"></a>
					<a name="idx1073748324"></a>
				</p>

				<p>Nowadays, many languages use Tk, including Scheme, Perl, and Python. Tkinter is Python's interface to the Tk GUI toolkit. By the way, Tcl is the behind the scenes language that Tkinter uses to communicate with the Tk toolkit. Those who already know Tcl/Tk will have a nice time learning and using Python/Tkinter because both pairs have a bit of familiarity.</p>

				<p>Both Tcl and Tk are open source products and their ongoing development is part of a collaboration effort between engineers at <a name="idx1073748325"></A>Scriptics and other users in the Tcl user community. Scriptics hosts the <a nAme="idx1073748326"></a>
					<A name="idx1073748327"></A>
					<i>CVS (Concurrent Versions System)</i>repository for the source code, and everyone else is welcome to submit source code changes and patches.</p>

				<P>At this time, the latest stable version of Tcl/Tk is version 8.3. Among other things, this version is shipped with a Tcl/Tk Web browser plug-in that provides an alternative to Java programming for client-side Web applications. The plug-in provides a secure environment to run downloaded Tcl programs, in a way similar to Java applets.</P>

				<P>If you are using a supported platform, the chances of easily finding a precompiled binary for your machine are extremely high. Tcl and Tk are highly portable, which allows them to run on many platforms, including Win32, Linux, IRIX, AIX, Solaris, BSD, Macintosh, and others. Therefore, it turns out to be very easy to implement Tkinter on all these platforms. For more information, check out</P>

				<blocKQUOte>
<p>
						<p>Tcl/Tk Documentation</P>

						<P><A TargeT="_blank" HREf="http://dev.scriptics.com/doc/">http://dev.scriptics.com/doc/</a></p>

					</p>
<p>
						<p>Ajuba</p>

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