/******************************************************************************

 *

 * 

 *

 * Copyright (C) 1997-2015 by Dimitri van Heesch.

 *

 * Permission to use, copy, modify, and distribute this software and its

 * documentation under the terms of the GNU General Public License is hereby 

 * granted. No representations are made about the suitability of this software 

 * for any purpose. It is provided "as is" without express or implied warranty.

 * See the GNU General Public License for more details.

 *

 * Documents produced by Doxygen are derivative works derived from the

 * input used in their production; they are not affected by this license.

 *

 */

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Introduction

Doxygen is the de facto standard tool for generating documentation from

annotated C++ sources, but it also supports other popular programming 

languages such as C, Objective-C, C#, PHP, Java, Python, IDL 

(Corba, Microsoft, and UNO/OpenOffice flavors), Fortran, VHDL, Tcl, and to some extent D.

Doxygen can help you in three ways:

 It can generate an on-line documentation browser (in HTML) and/or an 

     off-line reference manual (in \LaTeX) from a set 

     of documented source files. 

     There is also support for generating output in RTF (MS-Word), 

     PostScript, hyperlinked PDF, compressed HTML, and Unix man pages.

     The documentation is extracted directly from the sources, which

     makes it much easier to keep the documentation consistent with the

     source code.

 You can \ref extract_all "configure" doxygen to extract the code structure 

     from undocumented source files. This is very useful to quickly 

     find your way in large source distributions. 

     Doxygen can also visualize the relations between the various elements 

     by means of include dependency graphs, inheritance diagrams,

     and collaboration diagrams, which are all generated automatically.

 You can also use doxygen for creating normal documentation (as I did

     for the doxygen user manual and web-site).

Doxygen is developed under Mac OS X and Linux, but is set-up to be highly 

portable. As a result, it runs on most other Unix flavors as well. 

Furthermore, executables for Windows are available.

\n

This manual is divided into three parts, each of which is divided into several sections.

The first part forms a user manual:

Section \ref install discusses how to 

      download, compile and install

                     doxygen for your platform.

Section \ref starting tells you how to generate your first piece of 

                     documentation quickly. 

Section \ref docblocks demonstrates the various ways that code can

                 be documented.

Section \ref markdown show the Markdown formatting supported by doxygen.

Section \ref lists shows how to create lists.

Section \ref grouping shows how to group things together. 

Section \ref formulas shows how to insert formulas in the documentation.

Section \ref diagrams describes the diagrams and graphs that doxygen can generate.

Section \ref preprocessing explains how doxygen deals with macro definitions.

Section \ref autolink shows how to put links to files, classes, 

                 and members in the documentation.

Section \ref output shows how to generate the various output formats

                 supported by doxygen.

Section \ref searching shows various ways to search in the HTML documentation.

Section \ref extsearch shows how use the external search and index tools

Section \ref customize explains how you can customize the output generated

                 by doxygen.

Section \ref custcmd show how to define and use custom commands in your comments.

Section \ref external explains how to let doxygen create links to externally generated documentation.

Section \ref faq gives answers to frequently asked questions. 

Section \ref trouble tells you what to do when you have problems.

The second part forms a reference manual:

Section \ref features presents an overview of what doxygen can do.

Section \ref doxygen_usage shows how to use the \c doxygen program.

Section \ref doxywizard_usage shows how to use the \c doxywizard program. 

Section \ref config shows how to fine-tune doxygen, so it 

              generates the documentation you want.

Section \ref commands shows an overview of the special commands that can be 

              used within the documentation.

Section \ref htmlcmds shows an overview of the HTML commands that

              can be used within the documentation.

Section \ref xmlcmds shows an overview of the C# style XML commands that

              can be used within the documentation.

The third part provides information for developers:

Section \ref arch gives a global overview of how doxygen is internally

    structured.

Section \ref perlmod shows how to use the PerlMod output.

Section \ref langhowto explains how to add support for new

              output languages.

\n
Doxygen license

\addindex license

\addindex GPL

Copyright © 1997-2016 by 

Dimitri van Heesch.

Permission to use, copy, modify, and distribute this software and its

documentation under the terms of the GNU General Public License is hereby 

granted. No representations are made about the suitability of this software 

for any purpose. It is provided "as is" without express or implied warranty.

See the 

GNU General Public License

for more details.

Documents produced by doxygen are derivative works derived from the

input used in their production; they are not affected by this license.

User examples

Doxygen supports a number of \ref output "output formats" where HTML is the

most popular one. I've gathered 

some nice examples 

of real-life projects using doxygen.

These are part of a larger

list of projects 

that use doxygen.

If you know other projects, let me 

know and I'll add them. 

Future work

Although doxygen is successfully used by large number of companies and 

open source projects already, there is always room for improvement. 

You can submit enhancement requests in

the bug tracker.

Make sure the severity of the bug report is set to "enhancement".

Acknowledgments

\addindex acknowledgments

Thanks go to:

\addindex Doc++

    Malte Zöckler and Roland Wunderling, authors of DOC++.

    The first version of doxygen borrowed some code of an old version of DOC++. 

    Although I have rewritten practically all code since then, DOC++ has still 

    given me a good start in writing doxygen.

All people at Qt Software, for creating a beautiful GUI Toolkit

    (which is very useful as a Windows/Unix platform abstraction layer :-)

My brother Frank

    for rendering the logos.

Harm van der Heijden for adding HTML help support.

Wouter Slegers of 

    Your Creative Solutions 

    for registering the www.doxygen.org domain.

Parker Waechter for adding the RTF output generator.

Joerg Baumann, for adding conditional documentation blocks, 

    PDF links, and the configuration generator.

Tim Mensch for adding the todo command.

Christian Hammond for redesigning the web-site.

Ken Wong for providing the HTML tree view code.

Talin for adding support for C# style comments with XML markup.

Petr Prikryl for coordinating the internationalization support.

    All language maintainers for providing translations into many languages.

The band Porcupine Tree for 

    providing hours of great music to listen to while coding.

many, many others for suggestions, patches and bug reports.

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