Extend gmmproc documentation
Submitted by Johannes Schmid
Link to original bug (#350870)
Description
Some things are not documented in the "Wrapping a C library" documentation but are really often needed:
What to do
- with functions that take a Callback as argument
- with functions that take an array pointer as argument (e.g GtkActionEntry *entries)
- with functions that have a ... argument (Don't Panik)
- with GInterfaces
Some infos about type conversion would also be needed: const gchar* -> const Glib::ustring& GtkWidget* -> Gtk::Widget& ...