From: Hidetoshi NAGAI <nagai@...>
Date: 2006-03-10T01:43:43+09:00
Subject: Re: Looking for good reads on Ruby TK GUI programming

From: "Harry Truax" <htruax@stf.com>
Subject: Re: Looking for good reads on Ruby TK GUI programming
Date: Thu, 9 Mar 2006 23:12:58 +0900
Message-ID: <200603090912662.SM02816@htruax>
> I basically want to switch between one or more windows, each window takes up
> the
> whole screen, the user would enter/view data in each window, basic GUI
> stuff.

First of all, you'll have to clarify the design concept of your GUI. 
# Probably, it will be clarified in your mind. ;-)

Do you mean the concept is such like as the following?
==========================================================================
require 'tk'

def window_setup(top)
  top.overrideredirect(true)
  top.geometry("#{top.winfo_screenwidth}x#{top.winfo_screenheight}+0+0")
  top.pack_propagate(false)
  TkFrame.new(top, :borderwidth=>2,
  :relief=>:ridge).pack(:expand=>:true)
end

Tk.root.lower # This is important. If all toplevel windows (not iconified or
              # withdrawn) are set overrideredirect flags, the application 
              # may not be able to get keyboard focus. So, keep the root 
              # widget under administration of window-manager, but put it 
              # lowest layer.

top0 = TkToplevel.new
top0_f = window_setup(top0)

top1 = TkToplevel.new
top1_f = window_setup(top1)

top2 = TkToplevel.new
top2_f = window_setup(top2)

Tk.update_idletasks
top0.raise

#-------------------------------------------------------------

v1 = TkVariable.new
v2 = TkVariable.new

#-------------------------------------------------------------
#  top2

TkLabel.new(top1_f, :text=>'edit STR1').pack
e1 = TkEntry.new(top1_f, :textvariable=>v1).pack(:side=>:left)
b1 = TkButton.new(top1_f, :text=>'OK', 
                  :command=>proc{top0.raise}).pack(:side=>:left)

e1.bind('Return', proc{b1.invoke})

#-------------------------------------------------------------
#  top2

TkLabel.new(top2_f, :text=>'edit STR2').pack
e2 = TkEntry.new(top2_f, :textvariable=>v2).pack(:side=>:left)
b2 = TkButton.new(top2_f, :text=>'OK', 
                  :command=>proc{top0.raise}).pack(:side=>:left)

e2.bind('Return', proc{b2.invoke})

#-------------------------------------------------------------
#  top0

TkFrame.new(top0_f){|f|
  TkLabel.new(f, :text=>'STR1:').pack(:side=>:left)
  l = TkLabel.new(f, :textvariable=>v1, :anchor=>:w, 
                  :width=>25, :relief=>:sunken).pack(:side=>:left)
  b = TkButton.new(f, :text=>'edit', :command=>proc{
                     top1.raise
                     e1.focus # or e1.focus(true) (if 'force' flag is required)
                   }).pack(:side=>:left)
  l.bind('ButtonPress-1', proc{b.invoke})
}.pack

TkFrame.new(top0_f){|f|
  TkLabel.new(f, :text=>'STR2:').pack(:side=>:left)
  l = TkLabel.new(f, :textvariable=>v2, :anchor=>:w, 
                  :width=>25, :relief=>:sunken).pack(:side=>:left)
  b = TkButton.new(f, :text=>'edit', :command=>proc{
                     top2.raise
                     e2.focus # or e2.focus(true) (if 'force' flag is required)
                   }).pack(:side=>:left)
  l.bind('ButtonPress-1', proc{b.invoke})
}.pack

TkButton.new(top0_f, :text=>'QUIT', :command=>proc{exit}).pack

#-------------------------------------------------------------

Tk.mainloop
==========================================================================
-- 
Hidetoshi NAGAI (nagai@ai.kyutech.ac.jp)