uTools-Manuals/docs/java/javax/swing/InternalFrameFocusTraversalPolicy.html

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     javax.swing 
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<h2 class="title" title="Class InternalFrameFocusTraversalPolicy">Class InternalFrameFocusTraversalPolicy</h2>
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        已知直接子类：
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<span><a href="../../javax/swing/SortingFocusTraversalPolicy.html" title="javax.swing中的类">SortingFocusTraversalPolicy</a></span>
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<hr/> <br/> <pre>public abstract class <span class="typeNameLabel">InternalFrameFocusTraversalPolicy</span>
extends <a href="../../java/awt/FocusTraversalPolicy.html" title="class in java.awt">FocusTraversalPolicy</a></pre>
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<span>FocusTraversalPolicy可以选择提供一种用于确定JInternalFrame初始组件的算法。</span>
<span>初始组件是首次选择JInternalFrame时首先接收焦点。</span>
<span>默认情况下，这与JInternalFrame的默认组件焦点相同。</span>
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<span class="simpleTagLabel">从以下版本开始：</span>
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         1.4 
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<th class="colOne" scope="col">Constructor and Description</th>
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<td class="colOne"><code><span class="memberNameLink"><a href="../../javax/swing/InternalFrameFocusTraversalPolicy.html#InternalFrameFocusTraversalPolicy--">InternalFrameFocusTraversalPolicy</a></span>()</code> </td>
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<td class="colFirst"><code><a href="../../java/awt/Component.html" title="class in java.awt">Component</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../javax/swing/InternalFrameFocusTraversalPolicy.html#getInitialComponent-javax.swing.JInternalFrame-">getInitialComponent</a></span>(<a href="../../javax/swing/JInternalFrame.html" title="class in javax.swing">JInternalFrame</a> frame)</code>
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              返回当第一次选择JInternalFrame时应该接收焦点的组件。 
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<!-- --> </a> <h3>Methods inherited from class java.awt.<a href="../../java/awt/FocusTraversalPolicy.html" title="class in java.awt">FocusTraversalPolicy</a></h3> <code><a href="../../java/awt/FocusTraversalPolicy.html#getComponentAfter-java.awt.Container-java.awt.Component-">getComponentAfter</a>, <a href="../../java/awt/FocusTraversalPolicy.html#getComponentBefore-java.awt.Container-java.awt.Component-">getComponentBefore</a>, <a href="../../java/awt/FocusTraversalPolicy.html#getDefaultComponent-java.awt.Container-">getDefaultComponent</a>, <a href="../../java/awt/FocusTraversalPolicy.html#getFirstComponent-java.awt.Container-">getFirstComponent</a>, <a href="../../java/awt/FocusTraversalPolicy.html#getInitialComponent-java.awt.Window-">getInitialComponent</a>, <a href="../../java/awt/FocusTraversalPolicy.html#getLastComponent-java.awt.Container-">getLastComponent</a></code></li>
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<li class="blockList"> <h4>InternalFrameFocusTraversalPolicy</h4> <pre>public InternalFrameFocusTraversalPolicy()</pre> </li>
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<li class="blockList"> <h4>getInitialComponent</h4> <pre>public <a href="../../java/awt/Component.html" title="class in java.awt">Component</a> getInitialComponent(<a href="../../javax/swing/JInternalFrame.html" title="class in javax.swing">JInternalFrame</a> frame)</pre>
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<span>返回当第一次选择JInternalFrame时应该接收焦点的组件。</span>
<span>一旦通过调用<code>setSelected(true)</code>选择了<code>setSelected(true)</code> ，初始组件将不再被使用。</span>
<span>相反，如果JInternalFrame丢失并随后重新获得选择，或者使其成为隐形或不可显示，并随后显示和显示，则JInternalFrame最近关注的组件将成为焦点所有者。</span>
<span>此方法的默认实现将返回JInternalFrame的默认组件以进行对焦。</span>
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<span class="paramLabel">参数</span>
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<code>frame</code> - 要返回其初始组件的JInternalFrame 
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<span class="returnLabel">结果</span>
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             当第一次选择帧时应该接收焦点的组件，如果没有找到合适的组件，则为null 
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<span class="throwsLabel">异常</span>
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<code><a href="../../java/lang/IllegalArgumentException.html" title="class in java.lang">IllegalArgumentException</a></code> - 如果窗口为空 
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<span class="seeLabel">另请参见：</span>
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<a href="../../javax/swing/JInternalFrame.html#getMostRecentFocusOwner--"><code>JInternalFrame.getMostRecentFocusOwner()</code></a>
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