From: Mathieu Bouchard <matju@...>
Date: 2001-12-05T08:10:56+09:00
Subject: [ruby-talk:27490] Re: Ruby/Tk 'pack' question


On Wed, 5 Dec 2001, Hal E. Fulton wrote:
> Trying to figure out how to do this *without*
> using nested frames.
> What I want: A window with (conceptually)
> "three rows":
> 1. label + entry field
> 2. label + entry field
> 3. three buttons
> Now, I'm trying to figure out what combination
> of side/anchor/fill/expand (for these seven
> pack operations) will give me this.

That's because you don't understand what the pack() layout-manager allows.
it allows two columns of widgets on top of each other, one from the top to
the middle and one from the bottom to the middle, and a row of widgets on
each side of that, from outer to inner.

Therefore, you can only do this using 4 packs, or 1 grid, or 1 grid and 1
pack, depending on your aesthetics.

Here's an example using 1 grid and 1 pack.

require 'tk'
root=TkRoot.new
2.times {|y| TkLabel.new(root) {text "hello"}.grid "column"=>0,"row"=>y }
2.times {|y| TkEntry.new(root) {width 20    }.grid "column"=>1,"row"=>y }
TkFrame.new(root) {
  3.times {|x| TkButton.new(self) {text x}.pack "side"=>"left" }
}.grid "column"=>0, "row"=>2, "columnspan"=>2
Tk.mainloop

________________________________________________________________
Mathieu Bouchard                   http://hostname.2y.net/~matju