输入下面的命令，生成一个文档：
doxygen <config-file>
Doxygen将在输入目录下生成一个html，rtf，latex，man目录，分别对应于HTML，RTF， ，Unix-Man文件格式。
缺省的输出目录是doxygen的目录。使用OUTPUT_DIRECTORY，HTML_OUTPUT, RTF_OUTPUT，LATEX_OUTPUT和MAN_OUTPUT可以进行修改。如果输出目录不存在，doxygen会创建出来。
生成的html文档需要一个支持CSS的浏览器。
The generated documentation must first be compiled by a compiler (I use teTeX distribution version 0.9 that contains version 3.14159). To simplify the process of compiling the generated documentation, doxygen writes a Makefile into the latex directory. By typing make in the latex directory the dvi file refman.dvi will be generated (provided that you have a make tool called make of course). This file can then be viewed using xdvi or converted into a PostScript file refman.ps by typing make ps (this requires dvips). To put 2 pages on one physical page use make ps_2on1 instead. The resulting PostScript file can be send to a PostScript printer. If you do not have a PostScript printer, you can try to use ghostscript to convert PostScript into something your printer understands. Conversion to PDF is also possible if you have installed the ghostscript interpreter; just type make pdf (or make pdf_2on1). To get the best results for PDF output you should set the PDF_HYPERLINKS tag to YES.
文档必须首先经过 编译器（我手头上的是teTeX version 0.9其中包括 version 3.14159）。
Although documenting the source is presented as step 3, in a new project this should of course be step 1. Here I assume you already have some code and you want doxygen to generate a nice document describing the API and maybe the internals as well.
如果配置文件中EXTRACT_ALL设置为NO（缺省值），doxygen就只为documented members，files，classes和namespaces生成文档。那么应该如何为这些元素添加注释呢？对于members，classes和namespaces有两个基本选项：
1. 在member，class或namespace之前添加special注释。对于file，class和namespace members也直接可以在该member后添加注释。参考Special documentation blocks一章。
2. 在其他地方（另一个文件或位置）放置一个特殊的文档块并在此文档块中放置一个structural command。一个structural command in链接到、一个文档块到一个特定的可以documented（例如一个member，class，namespace或file）。具体参考Documentation at other places一章。
文件只能只能使用第二种选项，因为没有办法将一个注释块放在文件前。当然，file member（functions，variable，typedefs，defines）不需要一个显式的structural command；只要在其前后放置一个特殊的注释就OK了。
特殊注释块中的文本被写入到HTML或 之前，会作个parse。
在parse的过程中有以下几步：
· 执行文档中的Special Commands
· If a line starts with some whitespace followed by one or more asterisks (*) and then optionally more whitespace, then all whitespace and asterisks are removed.
· 空白行被认为是段的分隔符。无需再使用一个new-paragraph命令。
· 出现在文本中的单词，如果和documented类相匹配，就生成一个到documented类的链接。
· Links to members are created when certain patterns are found in the text.参见Automatic link generation以获取有关自动创建链接。
· HTML tags that are in the documentation are interpreted and converted to equivalents for the output. See section HTML Commands for an overview of all supported HTML tags.
