C++ Specific Configuration Variables

Cpp.ignoredirectives

The Cpp.ignoredirectives variable makes QDoc ignore the specified non-standard constructs, within C++ source code.

If not specified by the Cpp.ignoretokens or Cpp.ignoredirectives variables, non-standard constructs (typically macros) can result in erroneous documentation.

In qt.qdocconf:

 Cpp.ignoredirectives = Q_DECLARE_INTERFACE \
                        Q_DECLARE_OPERATORS_FOR_FLAGS \
                        Q_DECLARE_PRIVATE \
                        Q_DECLARE_PUBLIC \
                        Q_DISABLE_COPY \
                        Q_DUMMY_COMPARISON_OPERATOR \
                        Q_ENUMS \
                        Q_FLAGS \
                        Q_INTERFACES \
                        __attribute__

makes sure that when processing the code below, for example, QDoc will simply ignore the 'Q_ENUMS' and 'Q_FLAGS' expressions:

     class Q_CORE_EXPORT Qt {
         Q_OBJECT
         Q_ENUMS(Orientation TextFormat BackgroundMode
                 DateFormat ScrollBarPolicy FocusPolicy
                 ContextMenuPolicy CaseSensitivity
                 LayoutDirection ArrowType)
         Q_ENUMS(ToolButtonStyle)
         Q_FLAGS(Alignment)
         Q_FLAGS(Orientations)
         Q_FLAGS(DockWidgetAreas)

       public:
         ...
     };

The Q_OBJECT macro, however, is an exception: QDoc recognizes this particular non-standard construct, so there is no need specifying it using the Cpp.ignoredirectives variable.

Regarding the Q_CORE_EXPORT macro; see the documentation of the Cpp.ignoretokens variable.

See also Cpp.ignoretokens.

 Cpp.ignoretokens = QAXFACTORY_EXPORT \
                    QM_EXPORT_CANVAS \
                    ...
                    Q_COMPAT_EXPORT \
                    Q_CORE_EXPORT \
                    Q_EXPLICIT \
                    Q_EXPORT \
                    ...
                    Q_XML_EXPORT

     class Q_CORE_EXPORT Qt {
         Q_OBJECT
         Q_ENUMS(Orientation TextFormat BackgroundMode
                 DateFormat ScrollBarPolicy FocusPolicy
                 ContextMenuPolicy CaseSensitivity
                 LayoutDirection ArrowType)
         Q_ENUMS(ToolButtonStyle)
         Q_FLAGS(Alignment)
         Q_FLAGS(Orientations)
         Q_FLAGS(DockWidgetAreas)
       public:
         ...
     };