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GNOME拥有一组新的用于文本控件的特性。
GNOME has a new set of features for text controls.
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可以使用相同的方式更改其他控件。
Other controls can be changed in the same way.
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关闭设计模式时，单击按钮控件。
With design mode turned off, click the button control.
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每个控件都能引用模型的实例数据。
Each control can reference data from the model's instance data.
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现在，我们在页面中添加错误控件。
We will now add an error control onto the page.
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让我用一个例子帮助说明上面的控件。
Let me illustrate the above control with the help of an example.
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您可以查询或设置这些控件的当前值。
You can query or set the current value of these controls.
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对于简单的示例，使用一个按钮控件。
For the simple example, you use a button control.
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这充分展示了与控件实例交互的能力。
This demonstrates the ability to interact with the control instance.
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因此必然有编辑数据的控件。
So, of course, there are controls for editing data.
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最基本的表单控件是标记。
The most basic form control is the tag.
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检索被验证的这个控件的值。
The value of the control being validated is retrieved.
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首先，您需要知道控件拥有哪些方法。
To start, you need to know what methods this control has.
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控件应该和图30中的相似。
The control should look similar to Figure 30.
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首先，经常需要从特定控件获取属性。
First, there are properties you often need to get from certain controls.
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这些按钮并不是标准控件。
These buttons are not standard controls.
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至此，我们已经讨论了一些单独的控件。
So far, we have been talking about individual controls.
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有些提供商具有审计其控件行为的策略。
Some may have a policy of auditing their control activities.
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这些都是测试定制控件时经常需要做的。
This is something you often need to do when testing custom controls.
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图7展示了这三个控件类。
Figure 7 illustrates these three control classes.
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那么，数据源控件是什么？
So, what's a data source control?
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将焦点放到富文本控件上。
Put focus on the rich-text control.
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使用空白的SELECT控件呈现页面。
The page is rendered with an empty SELECT control.
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这些组件提供基本的控件。
These components provide basic controls.
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关联宏和控件中的事件。
Associate the macro with an event from the control.
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我们将从用于显示元数据的树控件开始介绍。
We begin with the tree control for displaying the metadata.
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阻止这种操作的惟一可用控件就是CRL。
The only control available to prevent this is the CRL.
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现在，让我们来看看如何显示控件。
Now, let's see how the control is rendered.
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对于SWT，控件是窗口小部件。
For SWT, a control is a widget.
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此页面上有一个控件——控件。
The page has one control on it, the control.
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