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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>BLT 和 Tix</b></font></td><td width="200" align="right"><font size="1" face="Verdana, Arial, Helvetica"><nobr>   第 3 页（共5 页）</nobr></font></td>
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<p>为了对这一对特别的 GUI 和图形 Tcl/Tk 扩展同样的不公平（对它们都不公平处理），先向您介绍 <b>BLT</b>（<a href="http://tcltk.com/blt/">http://tcltk.com/blt/</a>）。BLT 是一种 Tk 扩展，它提供了一些功能以便方便地创建多元素小部件，这对于简单的 Tk 极具挑战性。BLT 命令包括 <i>table</i>、<i>graph</i>、<i>barchart</i>、<i>vector</i>、<i>spline</i>、<i>busy</i>、<i>bgexec</i>、<i>drag&amp;drop</i>、<i>htext</i>、<i>bitmap</i>、<i>winop</i>、<i>watch</i> 和 <i>bltdebug</i>。</p>
<p>接下来是 <b>Tix</b>，它表示 <b>T</b>k <b>I</b>nterface e<b>X</b>tension。Tix 的当前版本是4.0，它提供了 43 个命令，其中大多数命令要么是 Mega-widget 要么是用于构建 Mega-widget 的一些组件，还有一些实用程序。Tix 的 Web 站点 <a href="http://tix.mne.com/">http://tix.mne.com/</a> 声称&ldquo;有了 Tix，可以忘记 TK 小部件的琐碎细节并全神贯注于解决您手边的问题。&rdquo;当用这些命令（如 <i>tixDirList</i>、<i>tixFileSelectDialog</i>、<i>tixPopupMenu</i>、<i>tixScrolledWindow</i> 等等）迅速地创建实用的界面时，您会很容易看到这项声称的基础。</p>
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