From: Clifford Heath <cjh-nospam@...>
Date: 2004-03-01T20:21:10+09:00
Subject: Re: Ruby-gtk ?

On the subject of ruby-gtk2, the absence of (sufficient) docs is
a shame, and the raw GTK docs don't always help. But perhaps one
of you folk can help me.

I've modified one of the TreeView examples to add a toggle as a
second column, but I can't work out what signal to connect to
allow the toggle to be clicked. My code is below, can you see
how to make the toggle clickable?

Is there a dynamic way to list all signals that an object can
generate?

Clifford Heath.

require 'gtk2'

def build_tree(tree, model)

    root = model.append(nil)
    root.set_value(0, "Root")

    for i in 1..4
       sub = model.append(root)
       sub.set_value(0, "Foo#{i}")
       for i in 1..2
          sub2 = model.append(sub)
          sub2.set_value(0, "Bar#{i}")
	 sub2.set_value(1, i == 1)		# Bar 1 is enabled
       end
    end
    @window.show_all
end

# Initialize Gtk
Gtk.init

# Create the main window:
@window = Gtk::Window.new(Gtk::Window::TOPLEVEL)
@window.set_size_request(400, 400)
@window.signal_connect("delete_event") { Gtk.main_quit }
@window.set_border_width(5)
@window.set_title("TreeStore Example");

# Put a scrollable vbox in it:
vbox2 = Gtk::VBox.new(false, 0)
scroller = Gtk::ScrolledWindow.new
scroller.set_policy(Gtk::POLICY_AUTOMATIC, Gtk::POLICY_AUTOMATIC)
@window.add(vbox2)
vbox2.pack_start(scroller, true, true, 0)

# Create the TreeStore with two columns
model = Gtk::TreeStore.new(String, TrueClass)

# Create the TreeView adding the TreeStore
tree = Gtk::TreeView.new(model)

# Create the Text renderer and set properties
render1 = Gtk::CellRendererText.new

# Create the Toggle renderer and set properties
render2 = Gtk::CellRendererToggle.new
render2.activatable = true

# Create the columns
c1 = Gtk::TreeViewColumn.new("Headings", render1, {:text => 0})
c2 = Gtk::TreeViewColumn.new("Enabled", render2, {:active => 1})

## This doesn't work:
#c2.signal_connect("clicked") { |view, path, column|
#	p column
#	p column.class.name
#}

# append the columns to treeview
tree.append_column(c1)
tree.append_column(c2)

# add the treeview to the scroller
scroller.add(tree)

build_tree(tree, model)

@window.show_all
Gtk.main