stk/Demos/Html-Demos/compo-en.html

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1998-04-30 07:04:33 -04:00
<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML//EN">
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<title>Composite Widgets</title>
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<script language="STk">
(lambda (parent url)
(let ((dir (dirname (expand-file-name
((with-module URL url:filename) url)))))
(chdir dir)))
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<h1><img src="Images/STk-tiny.gif">Composite Widgets</h1>
<font size=+4>
A composite widget is made by assembling several widgets (simple
or even composite widgets):
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<pre>
(define le (make &lt;Labeled-entry&gt; :value 50 :title "Valeur:"))
</pre>
<font size=+4>
defines <tt>le</tt> as an instance of the <tt>&lt;Labeled-entry&gt;</tt>
class. This object, on a screen, gives:
<p>
<center>
<IMG SRC="Images/compo-all.gif"><P>
</center>
<pre>
</pre>
In fact, this widget is composed if three Tk basic widgets: a
<i>frame</i>, a <i>label</i> an an <i>entry</i>:
<pre>
</pre>
<center>
<IMG SRC=Images/frame.gif> + <IMG SRC=Images/label.gif> + <IMG SRC=Images/entry.gif><P>
</center>
<pre>
</pre>
<ul>
<li> A demonstration of some composite widgets can be launched from here with:
<ul>
<li> the non-installed version of STk
(<a expr=(system "test-stk -f stklos-widgets.stklos&")><tt>test-stk</tt></a>)
<li> the installed version of STk
(<a expr=(system "stk -f stklos-widgets.stklos &")><tt>stk</tt></a>)<p>
</ul>
<li> The complete <a href="Lentry.stklos">code</a> of the <tt>&lt;Labeled-entry&gt;</tt> class is approximatively 60 lines.
</ul>
</font>
<hr>
<A HREF="main-fr.html"><img src="Images/backward.gif" align=middle> Retour</A>
<hr>
<address><a href="mailto:eg@unice.fr">Erick Gallesio</a></address>
<!-- Created: Tue Mar 10 18:42:29 CET 1998 -->
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Last modified: Mon Apr 13 12:08:18 CEST 1998
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