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| <a href="https://www.apache.org/">Apache Software Foundation</a> > |
| <a href="https://httpd.apache.org">HTTP Server Project</a> > |
| <a href="https://httpd.apache.org/apreq/">Request Library Subproject</a> |
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| <p class="apache">Apache HTTP Server Request Library - 2.17</p> |
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| <div class="title">Graph Legend</div> </div> |
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| <p>This page explains how to interpret the graphs that are generated by doxygen.</p> |
| <p>Consider the following example: </p><div class="fragment"><div class="line"><span class="comment">/*! Invisible class because of truncation */</span></div> |
| <div class="line"><span class="keyword">class </span>Invisible { };</div> |
| <div class="line"><span class="comment"></span> </div> |
| <div class="line"><span class="comment">/*! Truncated class, inheritance relation is hidden */</span></div> |
| <div class="line"><span class="keyword">class </span>Truncated : <span class="keyword">public</span> Invisible { };</div> |
| <div class="line"> </div> |
| <div class="line"><span class="comment">/* Class not documented with doxygen comments */</span></div> |
| <div class="line"><span class="keyword">class </span>Undocumented { };</div> |
| <div class="line"><span class="comment"></span> </div> |
| <div class="line"><span class="comment">/*! Class that is inherited using public inheritance */</span></div> |
| <div class="line"><span class="keyword">class </span>PublicBase : <span class="keyword">public</span> Truncated { };</div> |
| <div class="line"><span class="comment"></span> </div> |
| <div class="line"><span class="comment">/*! A template class */</span></div> |
| <div class="line"><span class="keyword">template</span><<span class="keyword">class</span> T> <span class="keyword">class </span>Templ { };</div> |
| <div class="line"><span class="comment"></span> </div> |
| <div class="line"><span class="comment">/*! Class that is inherited using protected inheritance */</span></div> |
| <div class="line"><span class="keyword">class </span>ProtectedBase { };</div> |
| <div class="line"><span class="comment"></span> </div> |
| <div class="line"><span class="comment">/*! Class that is inherited using private inheritance */</span></div> |
| <div class="line"><span class="keyword">class </span>PrivateBase { };</div> |
| <div class="line"><span class="comment"></span> </div> |
| <div class="line"><span class="comment">/*! Class that is used by the Inherited class */</span></div> |
| <div class="line"><span class="keyword">class </span>Used { };</div> |
| <div class="line"><span class="comment"></span> </div> |
| <div class="line"><span class="comment">/*! Super class that inherits a number of other classes */</span></div> |
| <div class="line"><span class="keyword">class </span>Inherited : <span class="keyword">public</span> PublicBase,</div> |
| <div class="line"> <span class="keyword">protected</span> ProtectedBase,</div> |
| <div class="line"> <span class="keyword">private</span> PrivateBase,</div> |
| <div class="line"> <span class="keyword">public</span> Undocumented,</div> |
| <div class="line"> <span class="keyword">public</span> Templ<int></div> |
| <div class="line">{</div> |
| <div class="line"> <span class="keyword">private</span>:</div> |
| <div class="line"> Used *m_usedClass;</div> |
| <div class="line">};</div> |
| </div><!-- fragment --><p> This will result in the following graph:</p> |
| <center><img src="graph_legend.png" alt="" class="inline"/></center><p>The boxes in the above graph have the following meaning: </p> |
| <ul> |
| <li> |
| A filled gray box represents the struct or class for which the graph is generated. </li> |
| <li> |
| A box with a black border denotes a documented struct or class. </li> |
| <li> |
| A box with a gray border denotes an undocumented struct or class. </li> |
| <li> |
| A box with a red border denotes a documented struct or class forwhich not all inheritance/containment relations are shown. A graph is truncated if it does not fit within the specified boundaries. </li> |
| </ul> |
| <p>The arrows have the following meaning: </p> |
| <ul> |
| <li> |
| A dark blue arrow is used to visualize a public inheritance relation between two classes. </li> |
| <li> |
| A dark green arrow is used for protected inheritance. </li> |
| <li> |
| A dark red arrow is used for private inheritance. </li> |
| <li> |
| A purple dashed arrow is used if a class is contained or used by another class. The arrow is labelled with the variable(s) through which the pointed class or struct is accessible. </li> |
| <li> |
| A yellow dashed arrow denotes a relation between a template instance and the template class it was instantiated from. The arrow is labelled with the template parameters of the instance. </li> |
| </ul> |
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