== GtkNodeView == 
This is how we create a node view in cobra
Just run: cobra nodeview.cobra
This was taken from the mono Gtk samples
http://www.mono-project.com/GtkSharpNodeViewTutorialExamples
{{{
#!cobra
use System
use Gtk

@args -pkg:gtk-sharp-2.0

class MyTreeNode inherits TreeNode
	has TreeNode(listOnly=true)
	var artist as String
		has TreeNodeValue(column=0)
	var songTitle as String
		has TreeNodeValue(column=1)

    cue init(artist,song_title)
		base.init
        .artist = artist
        .songTitle = song_title

	def main is shared has STAThread
		Application.init
		store = NodeStore(MyTreeNode("", "").typeOf)
		store.addNode(MyTreeNode("The Beatles", "Yesterday"))
		view = NodeView(store)
		view.appendColumn("Artist", CellRendererText(), "text", 0)
		view.appendColumn("Song Title", CellRendererText(), "text", 1)
		win = Window("node")
		listen win.deleteEvent, ref .quit
		win.add(view)
		win.showAll
		store.addNode(MyTreeNode("The Beatles", "Yesterday"))
		store.addNode(MyTreeNode("The Beatles", "Yesterday"))
		Application.run
		
	def quit(sender ,e) is shared
		Application.quit
}}}