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| 4 | <title>Chapter 19. Bringing Together a BoostBook Document</title> |
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| 25 | <div class="chapter" lang="en"> |
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| 26 | <div class="titlepage"><div><div><h2 class="title"> |
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| 27 | <a name="boostbook.together"></a>Chapter 19. Bringing Together a BoostBook Document</h2></div></div></div> |
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| 28 | <div class="toc"> |
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| 29 | <p><b>Table of Contents</b></p> |
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| 30 | <dl><dt><span class="section"><a href="together.html#boostbook.linking">Linking in BoostBook</a></span></dt></dl> |
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| 31 | </div> |
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| 32 | <div class="section" lang="en"> |
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| 33 | <div class="titlepage"><div><div><h2 class="title" style="clear: both"> |
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| 34 | <a name="boostbook.linking"></a>Linking in BoostBook</h2></div></div></div> |
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| 35 | <p>How one links to another element in BoostBook depends |
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| 36 | greatly on the nature of the element linked and how the link |
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| 37 | should appear. There are three general linking elements: |
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| 38 | <xref>, <link>, and <ulink>. Additionally, there |
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| 39 | are linking elements for referencing specific types of entities, |
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| 40 | such as classes (<classname>), functions |
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| 41 | (<functionname>), or libraries (<libraryname>).</p> |
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| 42 | <p>The <xref> element references elements that have an |
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| 43 | <code class="computeroutput">id</code> attribute and a title. The actual link text is |
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| 44 | composed from title and type of the element referenced. To link to |
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| 45 | a particular ID, create an <xref> element with the |
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| 46 | <code class="computeroutput">linkend</code> attribute set to the ID of the intended |
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| 47 | target. For instance, this section's ID is |
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| 48 | <code class="computeroutput">boostbook.linking</code>, so we create a reference it to |
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| 49 | with <code class="computeroutput"><xref linkend="boostbook.linking"/></code>, which |
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| 50 | will look like this in the text: <a href="together.html#boostbook.linking" title="Linking in BoostBook">the section called “Linking in BoostBook”</a>.</p> |
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| 51 | <p>The <link> element references an ID in the same way as |
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| 52 | <xref>, except that <link> does not generate any text |
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| 53 | for the link, so text must be supplied within the element. For |
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| 54 | instance, we can again link to this chapter but this time specify |
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| 55 | our own text with <code class="computeroutput"><link |
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| 56 | linkend="boostbook.linking">like this</link></code>. This |
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| 57 | markup will result in a link to this chapter that looks <a href="together.html#boostbook.linking" title="Linking in BoostBook">like this</a>.</p> |
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| 58 | <p>The <ulink> element references a URL that is outside |
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| 59 | of the DocBook document. The <code class="computeroutput">url</code> attribute contains |
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| 60 | the URL to link to, and the element data provides the link |
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| 61 | text.For instance, we can link to the the Boost web site with |
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| 62 | <code class="computeroutput"><ulink |
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| 63 | url="http://www.boost.org">Boost</ulink>,</code> which |
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| 64 | appears in the document like this: <a href="http://www.boost.org" target="_top">Boost</a>.</p> |
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| 65 | <p>The <classname>, <functionname>, |
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| 66 | <methodname>, and <libraryname> link to classes, |
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| 67 | functions, methods, and libraries, respectively. The text of each |
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| 68 | element gives both the name of the element to link to and the link |
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| 69 | text. For instance, we can link to the Function library with |
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| 70 | <code class="computeroutput"><libraryname>Function</libraryname></code>, |
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| 71 | which results in the following: |
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| 72 | <a href="../function.html" title="Chapter 4. Boost.Function">Function</a>. In cases where the displayed |
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| 73 | text is different from the actual name, the <code class="computeroutput">alt</code> |
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| 74 | attribute can be specified. For instance, the following XML |
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| 75 | element references the <code class="computeroutput"><a href="../boost/function.html" title="Class template function">boost::function</a></code> |
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| 76 | class template but displays the text <code class="computeroutput"><a href="../boost/function.html" title="Class template function">function</a></code>: <code class="computeroutput"><classname |
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| 77 | alt="boost::function">function</classname></code>.</p> |
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| 78 | </div> |
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| 79 | </div> |
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| 80 | <table width="100%"><tr> |
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| 81 | <td align="left"></td> |
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| 82 | <td align="right"><small>Copyright © 2003-2005 Douglas Gregor</small></td> |
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| 83 | </tr></table> |
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