Graph Legend

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

Consider the following example:

  /*! Invisible class because of truncation */
  class Invisible { };
  
  /*! Truncated class, inheritance relation is hidden */
  class Truncated : public Invisible { };
  
  /* Class not documented with doxygen comments */
  class Undocumented { };
  
  /*! Class that is inherited using public inheritance */
  class PublicBase : public Truncated { };
  
  /*! A template class */
  template<class T> class Templ { };
  
  /*! Class that is inherited using protected inheritance */
  class ProtectedBase { };
  
  /*! Class that is inherited using private inheritance */
  class PrivateBase { };
  
  /*! Class that is used by the Inherited class */
  class Used { };
  
  /*! Super class that inherits a number of other classes */
  class Inherited : public PublicBase,
   protected ProtectedBase,
   private PrivateBase,
   public Undocumented,
   public Templ<int>
  {
   private:
   Used *m_usedClass;
  };

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.