list_model = new ListStore(5,       typeof(int),            // ID
                                                typeof(string),         // Task name
                                                typeof(string),         // Notes
                                                typeof(string),         // Date due
                                                typeof(bool)        // Done - Toggle
            );
            set_model(list_model);

            var column = new Gtk.TreeViewColumn();

            // Done toggle column
            var toggle = new CellRendererToggle();
            toggle.toggled.connect((toggle, path) => {
                var tree_path = new TreePath.from_string(path);
                TreeIter iter;
                list_model.get_iter (out iter, tree_path);
                list_model.set (iter, Columns.TOGGLE, !toggle.active);
            });
            column.pack_start (toggle, false);
            column.add_attribute (toggle, "active", Columns.TOGGLE);
            insert_column(column, 0);

            // Task name cloumn
            insert_column_with_attributes(-1, "Task", new CellRendererText(), "text", 1, null);

            // Expander column
            column = new Gtk.TreeViewColumn();
            column.set_expand(true);
            insert_column(column, 2);

            // Date column
            insert_column_with_attributes(-1, "Date", new CellRendererText(), "text", 3, null);

            // Remove column
            column = new Gtk.TreeViewColumn();
            var remove_pixbuf = new CellRendererPixbuf();
            /*Add
            remove_pixbuf.clicked.connect((path) => {
                //Delete row from backend -> refresh model
            }
            */
            remove_pixbuf.stock_id = "gtk-close";
            column.pack_start (remove_pixbuf, false);
            insert_column(column, 4);
        }