Graphs and diagrams

Doxygen has built-in support to generate inheritance diagrams for C++ classes.

Doxygen can use the "dot" tool from graphviz 1.5 to generate more advanced diagrams and graphs. Graphviz is an "open-sourced", cross-platform graph drawing toolkit from AT&T and Lucent Bell Labs and can be found at

If you have the "dot" tool available in the path, you can set HAVE_DOT to YES in the configuration file to let doxygen use it.

Doxygen uses the "dot" tool to generate the following graphs:

The elements in the class diagrams in HTML and RTF have the following meaning: The elements in the class diagram in have the following meaning: The elements in the graphs generated by the dot tool have the following meaning: Here are a couple of header files that together show the various diagrams that doxygen can generate:


#ifndef _DIAGRAMS_A_H
#define _DIAGRAMS_A_H
class A { public: A *m_self; };

#ifndef _DIAGRAMS_B_H
#define _DIAGRAMS_B_H
class A;
class B { public: A *m_a; };

#ifndef _DIAGRAMS_C_H
#define _DIAGRAMS_C_H
#include "diagrams_c.h"
class D;
class C : public A { public: D *m_d; };

#ifndef _DIAGRAM_D_H
#define _DIAGRAM_D_H
#include "diagrams_a.h"
#include "diagrams_b.h"
class C;
class D : virtual protected  A, private B { public: C m_c; };

#ifndef _DIAGRAM_E_H
#define _DIAGRAM_E_H
#include "diagrams_d.h"
class E : public D {};

Click here for the corresponding HTML documentation that is generated by doxygen
(EXTRACT_ALL = YES is used here).

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Generated on Wed Mar 5 09:19:29 2003 for Doxygen manual by doxygen1.2.18