From: "R. Mark Volkmann" <mark@...>
Date: 2004-12-05T12:17:01+09:00
Subject: Tk scrolled canvas

I can create a canvas like this.

root = TkRoot.new {title 'Diagram'}
canvas = TkCanvas.new(root)

I think I should be able to create a scrolled canvas like this, but it 
doesn't work.

scrolled = TkScrolledcanvas.new(root)

I've search the mailing list for the answer and can't find it.
What's the correct syntax?