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关于嵌入式编程的tcl语法的资料

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<td width="90%"><font size="4" face="Verdana, Arial, Helvetica"><b>Tk 小部件</b></font></td><td width="200" align="right"><font size="1" face="Verdana, Arial, Helvetica"><nobr>   第 2 页（共7 页）</nobr></font></td>
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<p>在创建 Tk 小部件时，几乎很少使用命令。一半以上都是按钮或文本小部件的变体，如下面的列表所示。其中几项在下一屏中演示。</p>
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<ul>
<li>
								
<b>button</b> — 有二十多种配置选项（从 <i>anchor</i> 和 <i>font</i> 到 <i>padx</i> 和 <i>relief</i>）的简单小部件。</li>
<li>
								
<b>canvas</b> —  画布是一种小部件，不仅可以包含其它小部件，而且包含各种类型的结构化图形，包括圆、线和多边形。</li>
<li>
								
<b>checkbutton</b> — 创建复选框样式的按钮小部件，它链接到一个变量。</li>
<li>
								
<b>entry</b> — 构建单行文本输入框。</li>
<li>
								
<b>frame</b> — 框架是主要用作容器或定位架的小部件。</li>
<li>
								
<b>label</b> — 创建标签对象。</li>
<li>
								
<b>listbox</b> — 创建文本字符串列表框。在定义小部件之后，添加各项。</li>
<li>
								
<b>menu</b> — 单个多面小部件，包含多种菜单样式的各种项。</li>
<li>
								
<b>menubutton</b> — 为下拉菜单实现提供可单击的顶级界面。</li>
<li>
								
<b>message</b> — 创建包括版本调整和字自动换行特性的文本显示窗口小部件。</li>
<li>
								
<b>radiobutton</b> — 创建单选按钮，它可以是与指定变量相关的一个集合之一。</li>
<li>
								
<b>scale</b> — 为在指定范围和分辨率内选择值而创建滑动块。</li>
<li>
								
<b>scrollbar</b> — 为在相关小部件中更改部分内容（通常是文本或图）而生成小部件。</li>
<li>
								
<b>text</b> — 创建显示一个或多个文本行并允许编辑该文本的小部件。</li>
<li>
								
<b>toplevel</b> — 创建新的顶级（在 X 桌面上）窗口。</li>
</ul>
					
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