Data model for list data.
The GtkListStore object is a list model for use with a
GtkTreeView widget. It can be used
to store any number of tabular data.
you have to determine how many columns the store
will have, and what type
they shall be able to contain.
After that, you will fill the model with data by using
the set() ,
After you have done that, you can use the list store object
as data source for a GtkTreeView by
using the set_model()
Create a new list store with a number of columns.