In general, gtkmm-style projects use Doxygen, which reads specially formatted C++ comments and generates HTML documentation. You may write these doxygen comments directly in the header files.
You might wish to reuse documentation that exists for the C library that
you are wrapping. GTK-style C libraries typically use gtk-doc or gi-docgen and therefore
have source code comments formatted for gtk-doc or gi-docgen and some extra documentation
in .sgml and .xml files. The docextract_to_xml.py script, from glibmm's
tools/defs_gen directory, can read these files and
generate an .xml file that gmmproc can use to generate
doxygen comments. gmmproc will even try to transform the
documentation to make it more appropriate for a C++ API.
./docextract_to_xml.py -s ~/checkout/gnome/gtk/gtk/ > gtk_docs.xml
Because this automatic transformation is not always appropriate, you might
want to provide hand-written text for a particular method. You can do this
by copying the XML node for the function from your
something_docs.xml file to the
something_docs_override.xml file and changing the
contents. Alternatively you can write your own documentation in the
If you copied the skeleton source tree in mm-common and substituted the
placeholder text, then you will already have suitable
Doxyfile.in files in the
directory. You probably need to modify the
With the mm-common build setup, the list
of Doxygen input files is not defined in the Doxygen configuration file, but passed
along from meson/ninja to the standard input of doxygen.