From: Masao Mutoh <mutoh@...>
Date: 2003-02-23T01:51:32+09:00
Subject: Re: [Q] TreeView in Ruby-Gnome2

Hi,

On Sat, 22 Feb 2003 09:48:05 +0900
Daniel Carrera <dcarrera@math.umd.edu> wrote:

> A couple of questions:
> 
> 1) When the user clicks on an entry in a TreeView widget, how can I find 
> out which entry was clicked?
> ----------------------
> def callback(widget, event)
>     # Use 'event' to find which line was clicked?
> end
> 
> tree_view.signal_connect("button_press_event") {|w, e| callback(w, e)}

1. Use Gtk::TreeView's "cursor-changed" signal.
   tree_view.signal_connect("cursor-changed") do ... end

2. Use Gtk::TreeSelection's "changed" signal.
   tree_view.selection.signal_connect("changed") do ... end

> 2) How come TreeView does not have a "clicked" signal like buttons?

I couldn't understand this sentence because of my poor english.
What's different from your 1st question?


BTW, I wrote small sample script. 
Hope this helps.

----------------
require 'gtk2'

Gtk.init
model = Gtk::TreeStore.new(String)
view = Gtk::TreeView.new(model)
view.append_column(Gtk::TreeViewColumn.new("Test",
                   Gtk::CellRendererText.new(), :text => 0))

parent = nil
(0..10).each do |i|
  parent = model.append(parent).set_value(0, "Message#{i}")
end

Gtk::TreeView.signals.each do |signal|
  view.signal_connect(signal) do |e|
    p "#{signal} ----"
    p e
  end
end

Gtk::Window.new.add(view).set_default_size(100,100).show_all
Gtk.main

-- 
.:% Masao Mutoh<mutoh@highway.ne.jp>