|  | Graph Legend updated Sun Nov 5 2023 by Robert van Engelen |

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Graph Legend

This page explains how to interpret the graphs that are generated by doxygen.

Consider the following example:

1 /*! Invisible class because of truncation */
2 class Invisible { };
3
4 /*! Truncated class, inheritance relation is hidden */
5 class Truncated : public Invisible { };
6
7 /* Class not documented with doxygen comments */
8 class Undocumented { };
9
10 /*! Class that is inherited using public inheritance */
11 class PublicBase : public Truncated { };
12
13 /*! A template class */
14 template<class T> class Templ { };
15
16 /*! Class that is inherited using protected inheritance */
17 class ProtectedBase { };
18
19 /*! Class that is inherited using private inheritance */
20 class PrivateBase { };
21
22 /*! Class that is used by the Inherited class */
23 class Used { };
24
25 /*! Super class that inherits a number of other classes */
26 class Inherited : public PublicBase,
27 protected ProtectedBase,
28 private PrivateBase,
29 public Undocumented,
30 public Templ<int>
31 {
32 private:
33 Used *m_usedClass;
34 };

This will result in the following graph:

The boxes in the above graph have the following meaning:

- A filled gray box represents the struct or class for which the graph is generated.
- A box with a black border denotes a documented struct or class.
- A box with a gray border denotes an undocumented struct or class.
- 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.

The arrows have the following meaning:

- A dark blue arrow is used to visualize a public inheritance relation between two classes.
- A dark green arrow is used for protected inheritance.
- A dark red arrow is used for private inheritance.
- A purple dashed arrow is used if a class is contained or used by another class. The arrow is labeled with the variable(s) through which the pointed class or struct is accessible.
- A yellow dashed arrow denotes a relation between a template instance and the template class it was instantiated from. The arrow is labeled with the template parameters of the instance.