ruby-****@sourc*****
ruby-****@sourc*****
2012年 9月 19日 (水) 10:49:08 JST
-------------------------
REMOTE_ADDR = 184.145.80.187
REMOTE_HOST =
URL = http://ruby-gnome2.sourceforge.jp/hiki.cgi?tut-gtk2-treev-parts
-------------------------
@@ -33,7 +33,7 @@
The model is represented as a hierarchical tree of strongly-typed, columnar data. In other words, the model can be seen as a tree where every node has different values depending on which column is being queried. The type of data found in a column is determined by using Ruby Class (ie. Object, Integer, Float, String, Hash, Gdk::Pixbuf, etc.). The types are homogeneous per column across all nodes.
-In order to make life simpler for programmers who do not need to write their own specialized model (which is ((<not possible in Ruby|URL:http://www.ruby-forum.com/topic/114021>)) as of ruby-gnome2 version 0.19.3), two generic models are provided - the Gtk::TreeStore and the Gtk::ListStore. To use these, the developer simply pushes data into these models as necessary. These models provide the data structure as well as all appropriate tree interfaces. As a result, implementing drag and drop, sorting, and storing data is trivial. For the vast majority of trees and lists, these two models are sufficient.
+In order to make life simpler for programmers who do not need to write their own specialized model (which is ((<not possible in Ruby|URL:http://www.ruby-forum.com/topic/114021>)) as of ruby-gnome2 version 0.19.3), two generic models are provided - the Gtk::TreeStore and the Gtk::ListStore. To use these, the developer simply pushes data into models as necessary. These models provide the data structure as well as all appropriate tree interfaces. As a result, implementing drag and drop, sorting, and storing data is trivial. For the vast majority of trees and lists, these two models are sufficient.
Gtk::ListStore allows you to create a list of elements with multiple columns. Each row is a child of the root node, so only one level of rows is displayed. But as already mentioned Gtk::ListStore is basically a tree structure that has no hierarchy. It is only provided because faster algorithms exist for interacting with the models that do not have any children items.