ruby-****@sourc*****
ruby-****@sourc*****
2009年 2月 13日 (金) 08:49:40 JST
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REMOTE_ADDR = 74.15.84.244
REMOTE_HOST =
URL = http://ruby-gnome2.sourceforge.jp/hiki.cgi?tut-gtk2-treev-trees
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@@ -5,17 +5,15 @@
== Using Gtk::TreeStore
-There is one type of built-in tree tree model called Gtk::TreeStore which provides the same functionality as Gtk::ListStore, except the data can be organized into a multilayered tree. Just like Gtk::ListStore, the Gtk::TreeStore object is a tree model for use with a Gtk::TreeView widget. It implements the Gtk::TreeModel interface, and inherits all of its methods. It also implements the Gtk::TreeSortable interface so you can sort the list using the view. Finally, it also implements the tree drag and drop interfaces.
+There is one more type of built-in tree model called Gtk::TreeStore which provides the same functionality as Gtk::ListStore, except the data can be organized into a multilayered tree. Just like Gtk::ListStore, the Gtk::TreeStore object is a tree model for use with a Gtk::TreeView widget. It implements the Gtk::TreeModel interface, and inherits all of its methods. It also implements the Gtk::TreeSortable interface so you can sort the list using the view. Finally, it also implements the tree drag and drop interfaces.
{{image_right("treev-trees-ok.png")}}
-Our example program "treestore.rb" is a revised version of the "Grocery List" program from the previous session, splitting the products into two categories: "Cleaning Supplies" and "Food", which both have children of their own. The quantity of each category is set initially to zero, because it is calculated during the run-time.
+Our example program "treestore.rb" is a revised version of the "Grocery List" program from the previous session, splitting the products into two categories: "Cleaning Supplies" and "Food", which both have children of their own. The quantity of each category is set initially to zero, because it is calculated during the run-time. {{image_left("dialog-warning.png")}} Note, there are two logical columns under the header ((*Buy*)). The left logical column represent parent column with a small expander triangle at the edge, slightly shifted to the right is the row of children.
{{br}}
-{{image_right("dialog-warning.png")}}
:Caution:
- As of Ruby 1.8.6 and Ruby-GNOME2 rel.: 2-0.17.0-rc1, there seems to be a problem with Gtk::TreeStore. This implementation does not display parent and its children. The image on the right side hand side above shows what this program should display (you can see the the C GTK+ program version that works correctly by clicking the following link ((<C GTK+ program that works|tut-gtk2-treev-trees-cgtk-01>)), and the image below on the left shows what the problematic Ruby implementation does.
-
+ As of Ruby 1.8.6 and Ruby-GNOME2 rel.: 2-0.17.0-rc1, there seems to be a problem with Gtk::TreeStore. This implementation does not correctly display parent column and the expander {{image_right("dialog-warning.png")}}. The image on the right side hand side above shows what this program should display (you can see the the C GTK+ program version that works correctly by clicking the following link ((<C GTK+ program that works|tut-gtk2-treev-trees-cgtk-01>)), and the image below on the left shows what the problematic Ruby implementation does.
{{br}}
{{image_left("treev-trees-nok.png")}}