From 9be8859d92e4bbec2462e82457d014f0a0d720db Mon Sep 17 00:00:00 2001
From: xue <>
Date: Mon, 26 Dec 2005 15:54:54 +0000
Subject:

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+<com:TContent ID="body" >
+<h1>Controls</h1>
+<p>
+A control is an instance of class <code>TControl</code> or its subclass. A control is a component defined in addition with user interface. The base class <code>TControl</code> defines the parent-child relationship among controls which reflects the containment relationship among user interface elements.
+</p>
+
+<h3>Parent-Child Relationship</h3>
+<p>
+A parent control is in charge of the state transition of its child controls. The rendering result of the child controls are usually used to compose the parent control's presentation.
+</p>
+<p>
+The parent-child relationship is usually established by the framework via <a href="?page=Configurations.Templates1">templates</a>. In code, you may explicitly specify a control as a child of another using the following method,
+<pre class="source">
+$parent->Controls->add($child);
+</pre>
+where the property <code>Controls</code> refers to the child control collection of the parent.
+</p>
+
+</com:TContent>
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