ruby-****@sourc*****
ruby-****@sourc*****
2009年 2月 14日 (土) 01:47:07 JST
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REMOTE_ADDR = 74.15.84.244
REMOTE_HOST =
URL = http://ruby-gnome2.sourceforge.jp/hiki.cgi?Gtk%3A%3ATreeSelection
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@@ -2,7 +2,7 @@
The Gtk::TreeSelection object is a helper object to manage the selection for a Gtk::TreeView widget. The Gtk::TreeSelection object is automatically created when a new Gtk::TreeView widget is created, and cannot exist independentally of this widget. The primary reason the Gtk::TreeSelection objects exists is for cleanliness of code and API. That is, there is no conceptual reason all these methods could not be methods on the Gtk::TreeView widget instead of a separate methods.
-The Gtk::TreeSelection object is gotten from a Gtk::TreeView by calling Gtk::TreeView#selection. It can be manipulated to check the selection status of the tree, as well as select and deselect individual rows. Selection is done completely view side. As a result, multiple views of the same model can have completely different selections. Additionally, you cannot change the selection of a row on the model that is not currently displayed by the view without expanding its parents first.
+The Gtk::TreeSelection object is obtained from a Gtk::TreeView by calling Gtk::TreeView#selection. It can be manipulated to check the selection status of the tree, as well as select and deselect individual rows. Selection is done completely view side. As a result, multiple views of the same model can have completely different selections. Additionally, you cannot change the selection of a row on the model that is not currently displayed by the view without expanding its parents first.
One of the important things to remember when monitoring the selection of a view is that the "changed" signal is mostly a hint. That is, it may only emit one signal when a range of rows is selected. Additionally, it may on occasion emit a "changed" signal when nothing has happened (mostly as a result of programmers calling select_row on an already selected row).