From: Daniel Carrera <dcarrera@...>
Date: 2003-02-24T10:51:51+09:00
Subject: Re: [Q] TreeView in Ruby-Gnome2


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On Mon, Feb 24, 2003 at 10:37:43AM +0900, mutoh@highway.ne.jp wrote:

> >>       tree_view.signal_connect('cursor-changed') do |e|
> >>         iter = tree_view.selection.selected
> >>       end
> >
> >I've been trying to Gtk::TreeSelection this all weekend.  I doesn't >work.  
> >Try it!
> 
> Could you send your test code here?
> How doesn't it work?

It doesn't work in the sense that the 'iter' returned does not correspond 
to any of the entries in the list structure.  Sample code is attached.

-- 
Daniel Carrera
Graduate Teaching Assistant.  Math Dept.
University of Maryland.  (301) 405-5137

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require 'gtk2'
Gtk.init

#
# Create a window.
#
window = Gtk::Window.new( Gtk::Window::TOPLEVEL )
window.set_title( "AddressBook" )
window.set_border_width( 10 )
window.signal_connect( "destroy" ) { Gtk.main_quit }

#
#  List.
#
list_store = Gtk::ListStore.new( String )
tree_view  = Gtk::TreeView.new(list_store)
render     = Gtk::CellRendererText.new
column     = Gtk::TreeViewColumn.new("Contacts", render, {:text => 0})
tree_view.append_column( column )

jeffrey = list_store.append.set_value( 0, "Jeffrey")
melissa = list_store.append.set_value( 0, "Melissa")
sandy   = list_store.append.set_value( 0, "Sandy")

tree_view.signal_connect('cursor-changed') do 
    iter = tree_view.selection.selected
    if    iter == jeffrey
        puts "Jeffrey"
    elsif iter == melissa
        puts "Melissa"
    elsif iter == sandy
        puts "Sandy"
    else
        puts "No one"
    end
end

window.add( tree_view )

#
# Start the program.
#
window.show_all
Gtk.main


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