* (bug fix) TkEntry#delete

* (bug fix) some widget demos
* support <TkVariable object> == <Symbol>
  ( "coerce TkVariable" add to the TODO list :-) )
* freeze some object for security reason


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@4282 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

24 files changed, 249 insertions, 114 deletions

diff --git a/ext/tk/sample/demos-en/rmt b/ext/tk/sample/demos-en/rmt
index d4b1d93760..73f631180a 100644
--- a/ext/tk/sample/demos-en/rmt
+++ b/ext/tk/sample/demos-en/rmt
@@ -53,10 +53,8 @@ class Rmt
 
     # Create text window and scrollbar. 
 
-    @txt = TkText.new(root, 'relief'=>'sunken', 'bd'=>2, 'setgrid'=>true) {|t|
-      TkScrollbar.new(root, 'command'=>proc{|*args| t.yview *args}) {
-	pack('side'=>'right', 'fill'=>'both')
-      }
+    @txt = TkText.new(root, 'relief'=>'sunken', 'bd'=>2, 'setgrid'=>true) {
+      yscrollbar(TkScrollbar.new(root){pack('side'=>'right', 'fill'=>'y')})
       pack('side'=>'left')
     }
 
@@ -247,13 +245,18 @@ class Rmt
     rescue
     end
     TkWinfo.interps.sort.each{|ip|
-      if Tk.appsend(ip, false, 'info commands ruby') == ""
-	mode = 'Tcl'
-      else
-	mode = 'Ruby'
+      begin
+	if Tk.appsend(ip, false, 'info commands ruby') == ""
+	  mode = 'Tcl'
+	else
+	  mode = 'Ruby'
+	end
+	menu.add('command', 'label'=>format("%s    (#{mode}/Tk)", ip), 
+		 'command'=>proc{win.newApp ip, mode})
+      rescue
+	menu.add('command', 'label'=>format("%s (unknown Tk)", ip), 
+		 'command'=>proc{win.newApp ip, mode}, 'state'=>'disabled')
       end
-      menu.add('command', 'label'=>format("%s    (#{mode}/Tk)", ip), 
-	       'command'=>proc{win.newApp ip, mode})
     }
     menu.add('command', 'label'=>format("local    (Ruby/Tk)"), 
 	     'command'=>proc{win.newApp 'local', 'Ruby'})
diff --git a/ext/tk/sample/demos-en/rolodex b/ext/tk/sample/demos-en/rolodex
index 84254d93bf..9a4030e902 100644
--- a/ext/tk/sample/demos-en/rolodex
+++ b/ext/tk/sample/demos-en/rolodex
@@ -4,7 +4,7 @@
 # This script is a part of Tom LaStrange's rolodex
 # 
 # Copyright (C) 1998 by Takaaki Tateishi <ttate@jaist.ac.jp>
-# Time-stamp: "98/07/20 12:00:02 ttate"
+# Time-stamp: "03/08/02 06:23:06 nagai"
 #
 
 require "tk"
@@ -176,8 +176,8 @@ end
 class Rolodex < TkRoot
   attr_reader :frame, :buttons, :menu
 
-  def initialize
-    super
+  def initialize(*args)
+    super(*args)
     @frame = RolodexFrame.new(self)
     @frame.pack("side"=>"top",
 		"fill"=>"y",
@@ -314,7 +314,7 @@ Ctrl+S:		Search (dummy operation)
 EOF
 
 $helpTopics["version"] = <<EOF
-This is version 1.0.
+This is version 1.0.1.
 EOF
 
 Tk.mainloop
diff --git a/ext/tk/sample/demos-en/rolodex-j b/ext/tk/sample/demos-en/rolodex-j
index b0fc1d2c76..27e2bc9da0 100644
--- a/ext/tk/sample/demos-en/rolodex-j
+++ b/ext/tk/sample/demos-en/rolodex-j
@@ -4,11 +4,10 @@
 # このスクリプトは Tom LaStrange の rolodex の一部です。
 # 
 # Copyright (C) 1998 by Takaaki Tateishi <ttate@jaist.ac.jp>
-# Time-stamp: "98/07/20 12:00:36 ttate"
+# Time-stamp: "03/08/02 14:02:04 nagai"
 #
 
 require "tk"
-require 'tkencoding'
 
 Tk.encoding = "euc-jp"
 $font = TkFont.new('k14')
@@ -198,8 +197,8 @@ end
 class Rolodex < TkRoot
   attr_reader :frame, :buttons, :menu
 
-  def initialize
-    super
+  def initialize(*args)
+    super(*args)
     @frame = RolodexFrame.new(self)
     @frame.pack("side"=>"top",
 		"fill"=>"y",
@@ -318,7 +317,7 @@ Ctrl+S:		検索
 EOF
 
 $helpTopics["バージョン情報"] = <<EOF
-バージョンは 1.0 です。
+バージョンは 1.0.1e です。
 EOF
 
 Tk.mainloop
diff --git a/ext/tk/sample/demos-en/square b/ext/tk/sample/demos-en/square
index 821cd9927e..00bfde59ff 100644
--- a/ext/tk/sample/demos-en/square
+++ b/ext/tk/sample/demos-en/square
@@ -15,13 +15,20 @@ require 'tkafter'
 
 class TkSquare<TkWindow
   def create_self
-    tk_call 'square', path
+    begin
+      tk_call 'square', path
+    rescue
+      STDERR.print "\nSorry. Your Tk interpreter does not contain " +
+	'a "square" demonstration widget.' + 
+	"\n ( See documents included the Tcl/Tk source archive. )\n\n"
+      exit
+    end
   end
   def size(amount=nil)
     if amount
       tk_send 'size', amount
     else
-      number(tk_send 'size')
+      number(tk_send('size'))
     end
   end
   def position(x,y)
diff --git a/ext/tk/sample/demos-en/tcolor b/ext/tk/sample/demos-en/tcolor
index 8750d15c3e..6d023f0f8b 100644
--- a/ext/tk/sample/demos-en/tcolor
+++ b/ext/tk/sample/demos-en/tcolor
@@ -30,6 +30,12 @@ $label2 = TkVariable.new("label2")
 $label3 = TkVariable.new("label3")
 
 
+# setup the entry of the resourc database
+if (TkVarAccess.new('tcl_platform')['platform'] == 'unix')
+  TkOptionDB.add('*Entry.background', 'white')
+end
+
+
 # 各イベント用のメソッド
 
 def rgbToHsv(red,green,blue)
@@ -132,7 +138,7 @@ def tc_scaleChanged
   scale2 = $root.middle.middle.scale2
   scale3 = $root.middle.middle.scale3
 
-  case $colorSpace.to_i
+  case $colorSpace.value.intern
   when :rgb
     $red = (scale1.get * 65.535).to_i
     $green = (scale2.get * 65.535).to_i
@@ -167,7 +173,7 @@ def tc_setScales
   scale2 = $root.middle.middle.scale2
   scale3 = $root.middle.middle.scale3
   
-  case $colorSpace.to_i
+  case $colorSpace.value.intern
   when :rgb
     scale1.set($red / 65.535)
     scale2.set($green / 65.535)
@@ -289,7 +295,7 @@ class TkColorMenuFrame<TkFrame
 	  "command" => proc{changeColorSpace(:hsb)}
 	add "separator"
 	add "radio",
-	  "label" => "Qutomatic updates",
+	  "label" => "Automatic updates",
 	  "variable" => $autoUpdate,
 	  "value" => "1",
 	  "underline" => "0"
@@ -367,7 +373,7 @@ class TkColorMiddleLeftFrame<TkFrame
 			     "relief"=>"sunken",
 			     "borderwidth"=>"2",
 			     "exportselection"=>"false")
-      @scroll.command(proc{|*args| @names.yview *args})
+      @scroll.command(proc{|*args| @names.yview(*args)})
       @names.bind("Double-1",proc{
 		    tc_loadNamedColor(@names.get(@names.curselection))})
       @names.pack("side"=>"left")
@@ -490,8 +496,8 @@ end
 class TkColor<TkRoot
   attr_reader :menu, :bottom, :middle
 
-  def initialize
-    super
+  def initialize(*args)
+    super(*args)
     @menu = TkColorMenuFrame.new(self)
     @menu.pack("side"=>"top", "fill"=>"x")
 
diff --git a/ext/tk/sample/demos-en/timer b/ext/tk/sample/demos-en/timer
index 896568c0bc..58a41d00c0 100644
--- a/ext/tk/sample/demos-en/timer
+++ b/ext/tk/sample/demos-en/timer
@@ -80,12 +80,28 @@ end
 class ButtonFrame < TkFrame
   def initialize(parent=nil,keys=nil)
     super(parent,keys)
+=begin
     @stop = TkButton.new(self,
 			 'text'=>'Stop',
 			 'command'=>proc{timer_stop})
     @start = TkButton.new(self,
 			  'text'=>'Start',
 			  'command'=>proc{timer_start})
+=end
+    @stop  = TkButton.new(self, :text=>'Stop',  :state=>:disabled)
+    @start = TkButton.new(self, :text=>'Start', :state=>:normal)
+
+    @stop.command proc{
+      timer_stop
+      @start.state(:normal)
+      @stop.state(:disabled)
+    }
+    @start.command proc{
+      timer_start
+      @stop.state(:normal)
+      @start.state(:disabled)
+    }
+
     @reset = TkButton.new(self,
 			  'text'=>'Reset',
 			  'command'=>proc{timer_reset})
@@ -99,8 +115,8 @@ end
 class Timer < TkRoot
   attr_reader :countframe
 
-  def initialize
-    super
+  def initialize(*args)
+    super(*args)
     @countframe = CountFrame.new(self)
     @buttonframe = ButtonFrame.new(self)
     for f in [@buttonframe,@countframe]
diff --git a/ext/tk/sample/demos-jp/browse1 b/ext/tk/sample/demos-jp/browse1
index 6bb8fb35ca..03e251035a 100644
--- a/ext/tk/sample/demos-jp/browse1
+++ b/ext/tk/sample/demos-jp/browse1
@@ -1,4 +1,4 @@
-#!/usr/local/bin/ruby
+#!/usr/bin/env ruby
 
 # browse --
 # This script generates a directory browser, which lists the working 
diff --git a/ext/tk/sample/demos-jp/browse2 b/ext/tk/sample/demos-jp/browse2
index 755afa682c..304a5f547e 100644
--- a/ext/tk/sample/demos-jp/browse2
+++ b/ext/tk/sample/demos-jp/browse2
@@ -1,4 +1,4 @@
-#!/usr/local/bin/ruby
+#!/usr/bin/env ruby
 
 # browse --
 # This script generates a directory browser, which lists the working 
diff --git a/ext/tk/sample/demos-jp/hello b/ext/tk/sample/demos-jp/hello
index 94e450899c..859ebd950e 100644
--- a/ext/tk/sample/demos-jp/hello
+++ b/ext/tk/sample/demos-jp/hello
@@ -1,4 +1,4 @@
-#!/usr/local/bin/ruby
+#!/usr/bin/env ruby
 require 'tk'
 
 TkButton.new(nil,
diff --git a/ext/tk/sample/demos-jp/ixset b/ext/tk/sample/demos-jp/ixset
index 5391012cfb..46c2378073 100644
--- a/ext/tk/sample/demos-jp/ixset
+++ b/ext/tk/sample/demos-jp/ixset
@@ -1,4 +1,4 @@
-#!/usr/local/bin/ruby
+#!/usr/bin/env ruby
 
 # ixset --
 # A nice interface to "xset" to change X server settings
@@ -166,7 +166,7 @@ class Xsettings
     l = TkLabel.new(bell, 'text'=>'Bell Settings')
     @w_bellvol = TkScale.new(bell, 'from'=>0, 'to'=>100, 'length'=>200, 
 			     'tickinterval'=>20, 'orient'=>'horizontal', 
-			     'label'=>"Volume (%)")
+			     'label'=>"Volume (%)") 
 
     f = TkFrame.new(bell)
     @w_bellpit = LabelEntry.new(f, "Pitch (Hz)", 6)
diff --git a/ext/tk/sample/demos-jp/rmt b/ext/tk/sample/demos-jp/rmt
index 64583d714e..73f631180a 100644
--- a/ext/tk/sample/demos-jp/rmt
+++ b/ext/tk/sample/demos-jp/rmt
@@ -1,4 +1,4 @@
-#!/usr/local/bin/ruby
+#!/usr/bin/env ruby
 
 # rmt -- 
 # This script implements a simple remote-control mechanism for 
@@ -53,10 +53,8 @@ class Rmt
 
     # Create text window and scrollbar. 
 
-    @txt = TkText.new(root, 'relief'=>'sunken', 'bd'=>2, 'setgrid'=>true) {|t|
-      TkScrollbar.new(root, 'command'=>proc{|*args| t.yview *args}) {
-	pack('side'=>'right', 'fill'=>'both')
-      }
+    @txt = TkText.new(root, 'relief'=>'sunken', 'bd'=>2, 'setgrid'=>true) {
+      yscrollbar(TkScrollbar.new(root){pack('side'=>'right', 'fill'=>'y')})
       pack('side'=>'left')
     }
 
@@ -247,13 +245,18 @@ class Rmt
     rescue
     end
     TkWinfo.interps.sort.each{|ip|
-      if Tk.appsend(ip, false, 'info commands ruby') == ""
-	mode = 'Tcl'
-      else
-	mode = 'Ruby'
+      begin
+	if Tk.appsend(ip, false, 'info commands ruby') == ""
+	  mode = 'Tcl'
+	else
+	  mode = 'Ruby'
+	end
+	menu.add('command', 'label'=>format("%s    (#{mode}/Tk)", ip), 
+		 'command'=>proc{win.newApp ip, mode})
+      rescue
+	menu.add('command', 'label'=>format("%s (unknown Tk)", ip), 
+		 'command'=>proc{win.newApp ip, mode}, 'state'=>'disabled')
       end
-      menu.add('command', 'label'=>format("%s    (#{mode}/Tk)", ip), 
-	       'command'=>proc{win.newApp ip, mode})
     }
     menu.add('command', 'label'=>format("local    (Ruby/Tk)"), 
 	     'command'=>proc{win.newApp 'local', 'Ruby'})
diff --git a/ext/tk/sample/demos-jp/rolodex b/ext/tk/sample/demos-jp/rolodex
index 9ed1f6d7d1..9f87ae2829 100644
--- a/ext/tk/sample/demos-jp/rolodex
+++ b/ext/tk/sample/demos-jp/rolodex
@@ -1,10 +1,10 @@
-#!/usr/local/bin/ruby
+#!/usr/bin/env ruby
 #
 # rolodex --
 # This script is a part of Tom LaStrange's rolodex
 # 
 # Copyright (C) 1998 by Takaaki Tateishi <ttate@jaist.ac.jp>
-# Time-stamp: "98/07/20 12:00:02 ttate"
+# Time-stamp: "03/08/02 12:45:21 nagai"
 #
 
 require "tk"
@@ -176,8 +176,8 @@ end
 class Rolodex < TkRoot
   attr_reader :frame, :buttons, :menu
 
-  def initialize
-    super
+  def initialize(*args)
+    super(*args)
     @frame = RolodexFrame.new(self)
     @frame.pack("side"=>"top",
 		"fill"=>"y",
@@ -314,7 +314,7 @@ Ctrl+S:		Search (dummy operation)
 EOF
 
 $helpTopics["version"] = <<EOF
-This is version 1.0.
+This is version 1.0.1.
 EOF
 
 Tk.mainloop
diff --git a/ext/tk/sample/demos-jp/rolodex-j b/ext/tk/sample/demos-jp/rolodex-j
index 170f7bb96b..1c482aafb2 100644
--- a/ext/tk/sample/demos-jp/rolodex-j
+++ b/ext/tk/sample/demos-jp/rolodex-j
@@ -1,21 +1,14 @@
-#!/usr/local/bin/ruby
+#!/usr/bin/env ruby
 #
 # rolodex --
 # このスクリプトは Tom LaStrange の rolodex の一部です。
 # 
 # Copyright (C) 1998 by Takaaki Tateishi <ttate@jaist.ac.jp>
-# Time-stamp: "98/07/20 12:00:36 ttate"
+# Time-stamp: "03/08/02 14:01:54 nagai"
 #
 
 require "tk"
-
-# UTF8への変換を行なう。
-
-$encoding = "euc-jp"
-def j(str)
-  Tk.toUTF8(str,$encoding)
-end
-
+Tk.encoding = "euc-jp"
 
 def show_help(topic,x=0,y=0)
   if( topic.is_a?(TkWindow) )
@@ -33,17 +26,17 @@ def show_help(topic,x=0,y=0)
     msg = "このトピックについてのヘルプはまだ使用できません"
   end
   TkDialog.new("title"=>"Rolodex Help",
-	       "message"=>j("「#{topic}」\n\n#{msg}"),
+	       "message"=>"「#{topic}」\n\n#{msg}",
 	       "default_button"=>0,
 	       "buttons"=>["OK"])
 end
 
 def fillCard
   clearAction
-  $root.frame.entry[1].insert(0,j("立石 孝彰"))
-  $root.frame.entry[2].insert(0,j("923-1292 石川県"))
-  $root.frame.entry[3].insert(0,j("辰口町 旭台 1-1"))
-  $root.frame.entry[4].insert(0,j("北陸先端科学技術大学院大学"))
+  $root.frame.entry[1].insert(0, "立石 孝彰")
+  $root.frame.entry[2].insert(0, "923-1292 石川県")
+  $root.frame.entry[3].insert(0, "辰口町 旭台 1-1")
+  $root.frame.entry[4].insert(0, "北陸先端科学技術大学院大学")
   $root.frame.entry[5].insert(0,"private")
   $root.frame.entry[6].insert(0,"***-***-****")
   $root.frame.entry[7].insert(0,"***-***-****")
@@ -53,7 +46,7 @@ def addAction
   for i in 1..7
     STDERR.print format("%-12s %s\n",
 			RolodexFrame::LABEL[i],
-			Tk.fromUTF8($root.frame.entry[i].value,$encoding))
+			$root.frame.entry[i].value)
   end
 end
 
@@ -65,7 +58,7 @@ end
 
 def fileAction
   TkDialog.new("title"=>"File Selection",
-	       "message"=>j("これはファイル選択ダイアログのダミーです。\n"),
+	       "message"=>"これはファイル選択ダイアログのダミーです。\n",
 	       "default_button"=>0,
 	       "buttons"=>["OK"])
   STDERR.print "dummy file name\n"
@@ -73,9 +66,9 @@ end
 
 def deleteAction
   result = TkDialog.new("title"=>"Confirm Action",
-			"message"=>j("よろしいですか？"),
+			"message"=>"よろしいですか？",
 			"default_button"=>0,
-			"buttons"=>[j("キャンセル")])
+			"buttons"=>["キャンセル"])
   if( result.value == 0 )
     clearAction
   end
@@ -90,7 +83,6 @@ class RolodexFrame < TkFrame
   def initialize(parent=nil,keys=nil)
     super(parent,keys)
     self["relief"] = "flat"
-    
     @i = []
     @label = []
     @entry = []
@@ -100,7 +92,7 @@ class RolodexFrame < TkFrame
 		 "pady"=>2,
 		 "anchor"=>"e")
       @label[i] = TkLabel.new(@i[i],
-			      "text"=>j(LABEL[i]),
+			      "text"=>LABEL[i],
 			      "anchor"=>"e")
       @entry[i] = TkEntry.new(@i[i],
 			      "width"=>30,
@@ -116,14 +108,10 @@ class RolodexButtons < TkFrame
 
   def initialize(parent,keys=nil)
     super(parent,keys)
-    @clear = TkButton.new(self,
-			  "text" => j("クリアー"))
-    @add = TkButton.new(self,
-			"text" => j("追加"))
-    @search = TkButton.new(self,
-			   "text" => j("検索"))
-    @delete = TkButton.new(self,
-			   "text" => j("消去"))
+    @clear = TkButton.new(self,"text" => "クリアー")
+    @add = TkButton.new(self,  "text" => "追加")
+    @search = TkButton.new(self, "text" => "検索")
+    @delete = TkButton.new(self,  "text" => "消去")
     for w in [@clear,@add,@search,@delete]
       w.pack("side"=>"left", "padx"=>2)
     end
@@ -139,42 +127,42 @@ class RolodexMenuFrame < TkFrame
 	      "borderwidth"=>1)
 
     @file = TkMenubutton.new(self,
-			     "text"=>j("ファイル"),
+			     "text"=> "ファイル",
 			     "underline"=>0)
     @file_menu = TkMenu.new(@file)
     @file_menu.add("command",
-		   "label" => j("読み込み ..."),
+		   "label" => "読み込み ...",
 		   "command" => proc{fileAction},
 		   "underline" => 0)
     @file_menu.add("command",
-		   "label" => j("終了"),
+		   "label" => "終了",
 		   "command" => proc{$root.destroy},
 		   "underline" => 0)
     @file.menu(@file_menu)
     @file.pack("side"=>"left")
 
     @help = TkMenubutton.new(self,
-			     "text"=>j("ヘルプ"),
+			     "text"=> "ヘルプ",
 			     "underline"=>0)
     @help_menu = TkMenu.new(@help)
     @help_menu.add("command",
-		   "label"=>j("コンテキストについて"),
+		   "label"=> "コンテキストについて",
 		   "command"=>proc{show_help("コンテキスト")},
 		   "underline"=>3)
     @help_menu.add("command",
-		   "label"=>j("ヘルプについて"),
+		   "label"=> "ヘルプについて",
 		   "command"=>proc{show_help("ヘルプ")},
 		   "underline"=>3)
     @help_menu.add("command",
-		   "label"=>j("ウィンドウについて"),
+		   "label"=> "ウィンドウについて",
 		   "command"=>proc{show_help("ウィンドウ")},
 		   "underline"=>3)
     @help_menu.add("command",
-		   "label"=>j("キー操作について"),
+		   "label"=> "キー操作について",
 		   "command"=>proc{show_help("キー操作")},
 		   "underline"=>3)
     @help_menu.add("command",
-		   "label"=>j("バージョン情報"),
+		   "label"=> "バージョン情報",
 		   "command"=>proc{show_help("バージョン情報")},
 		   "underline"=>3)
     @help.menu(@help_menu)
@@ -185,8 +173,8 @@ end
 class Rolodex < TkRoot
   attr_reader :frame, :buttons, :menu
 
-  def initialize
-    super
+  def initialize(*args)
+    super(*args)
     @frame = RolodexFrame.new(self)
     @frame.pack("side"=>"top",
 		"fill"=>"y",
@@ -209,16 +197,16 @@ $root.buttons.add.configure("command"=>proc{addAction})
 $root.buttons.clear.configure("command"=>proc{clearAction})
 $root.buttons.search.configure("command"=>proc{addAction; fillCard})
 
-$root.buttons.clear.configure("text"=>j("クリアー   Ctrl+C"))
+$root.buttons.clear.configure("text"=> "クリアー   Ctrl+C")
 $root.bind("Control-c",proc{clearAction})
 
-$root.buttons.add.configure("text"=>j("追加   Ctrl+A"))
+$root.buttons.add.configure("text"=> "追加   Ctrl+A")
 $root.bind("Control-a",proc{addAction})
 
-$root.buttons.search.configure("text"=>j("検索   Ctrl+S"))
+$root.buttons.search.configure("text"=> "検索   Ctrl+S")
 $root.bind("Control-s",proc{addAction; fillCard})
 
-$root.buttons.delete.configure("text"=>j("消去   Ctrl+D"))
+$root.buttons.delete.configure("text"=> "消去   Ctrl+D")
 $root.bind("Control-d",proc{deleteAction})
 
 $root.menu.file_menu.entryconfigure(1, "accel"=>"Ctrl+F")
@@ -305,7 +293,7 @@ Ctrl+S:		検索
 EOF
 
 $helpTopics["バージョン情報"] = <<EOF
-バージョンは 1.0 です。
+バージョンは 1.0.1j です。
 EOF
 
 Tk.mainloop
diff --git a/ext/tk/sample/demos-jp/square b/ext/tk/sample/demos-jp/square
index b914b735b2..00bfde59ff 100644
--- a/ext/tk/sample/demos-jp/square
+++ b/ext/tk/sample/demos-jp/square
@@ -1,4 +1,4 @@
-#!/usr/local/bin/ruby
+#!/usr/bin/env ruby
 
 # square --
 # This script generates a demo application containing only 
@@ -15,13 +15,20 @@ require 'tkafter'
 
 class TkSquare<TkWindow
   def create_self
-    tk_call 'square', path
+    begin
+      tk_call 'square', path
+    rescue
+      STDERR.print "\nSorry. Your Tk interpreter does not contain " +
+	'a "square" demonstration widget.' + 
+	"\n ( See documents included the Tcl/Tk source archive. )\n\n"
+      exit
+    end
   end
   def size(amount=nil)
     if amount
       tk_send 'size', amount
     else
-      number(tk_send 'size')
+      number(tk_send('size'))
     end
   end
   def position(x,y)
diff --git a/ext/tk/sample/demos-jp/tcolor b/ext/tk/sample/demos-jp/tcolor
index 5464aebae2..391ce4c446 100644
--- a/ext/tk/sample/demos-jp/tcolor
+++ b/ext/tk/sample/demos-jp/tcolor
@@ -1,4 +1,4 @@
-#!/usr/local/bin/ruby
+#!/usr/bin/env ruby
 #
 # tcolor --
 # このスクリプトはRGB,HSB,CYM形式をサポートする
@@ -30,6 +30,12 @@ $label2 = TkVariable.new("label2")
 $label3 = TkVariable.new("label3")
 
 
+# リソースデータベースの設定
+if (TkVarAccess.new('tcl_platform')['platform'] == 'unix')
+  TkOptionDB.add('*Entry.background', 'white')
+end
+
+
 # 各イベント用のメソッド
 
 def rgbToHsv(red,green,blue)
@@ -132,7 +138,7 @@ def tc_scaleChanged
   scale2 = $root.middle.middle.scale2
   scale3 = $root.middle.middle.scale3
 
-  case $colorSpace.to_i
+  case $colorSpace.value.intern
   when :rgb
     $red = (scale1.get * 65.535).to_i
     $green = (scale2.get * 65.535).to_i
@@ -167,7 +173,7 @@ def tc_setScales
   scale2 = $root.middle.middle.scale2
   scale3 = $root.middle.middle.scale3
   
-  case $colorSpace.to_i
+  case $colorSpace.value.intern
   when :rgb
     scale1.set($red / 65.535)
     scale2.set($green / 65.535)
@@ -289,7 +295,7 @@ class TkColorMenuFrame<TkFrame
 	  "command" => proc{changeColorSpace(:hsb)}
 	add "separator"
 	add "radio",
-	  "label" => "Qutomatic updates",
+	  "label" => "Automatic updates",
 	  "variable" => $autoUpdate,
 	  "value" => "1",
 	  "underline" => "0"
@@ -367,7 +373,7 @@ class TkColorMiddleLeftFrame<TkFrame
 			     "relief"=>"sunken",
 			     "borderwidth"=>"2",
 			     "exportselection"=>"false")
-      @scroll.command(proc{|*args| @names.yview *args})
+      @scroll.command(proc{|*args| @names.yview(*args)})
       @names.bind("Double-1",proc{
 		    tc_loadNamedColor(@names.get(@names.curselection))})
       @names.pack("side"=>"left")
@@ -490,8 +496,8 @@ end
 class TkColor<TkRoot
   attr_reader :menu, :bottom, :middle
 
-  def initialize
-    super
+  def initialize(*args)
+    super(*args)
     @menu = TkColorMenuFrame.new(self)
     @menu.pack("side"=>"top", "fill"=>"x")
 
diff --git a/ext/tk/sample/demos-jp/timer b/ext/tk/sample/demos-jp/timer
index 232f4ae5ca..58a41d00c0 100644
--- a/ext/tk/sample/demos-jp/timer
+++ b/ext/tk/sample/demos-jp/timer
@@ -1,4 +1,4 @@
-#!/usr/local/bin/ruby
+#!/usr/bin/env ruby
 #
 # timer --
 # This script generates a counter with start,stop and reset buttons.
@@ -80,12 +80,28 @@ end
 class ButtonFrame < TkFrame
   def initialize(parent=nil,keys=nil)
     super(parent,keys)
+=begin
     @stop = TkButton.new(self,
 			 'text'=>'Stop',
 			 'command'=>proc{timer_stop})
     @start = TkButton.new(self,
 			  'text'=>'Start',
 			  'command'=>proc{timer_start})
+=end
+    @stop  = TkButton.new(self, :text=>'Stop',  :state=>:disabled)
+    @start = TkButton.new(self, :text=>'Start', :state=>:normal)
+
+    @stop.command proc{
+      timer_stop
+      @start.state(:normal)
+      @stop.state(:disabled)
+    }
+    @start.command proc{
+      timer_start
+      @stop.state(:normal)
+      @start.state(:disabled)
+    }
+
     @reset = TkButton.new(self,
 			  'text'=>'Reset',
 			  'command'=>proc{timer_reset})
@@ -99,8 +115,8 @@ end
 class Timer < TkRoot
   attr_reader :countframe
 
-  def initialize
-    super
+  def initialize(*args)
+    super(*args)
     @countframe = CountFrame.new(self)
     @buttonframe = ButtonFrame.new(self)
     for f in [@buttonframe,@countframe]
diff --git a/ext/tk/sample/demos-jp/widget b/ext/tk/sample/demos-jp/widget
index 3d4690d57a..5eb5d5f074 100644
--- a/ext/tk/sample/demos-jp/widget
+++ b/ext/tk/sample/demos-jp/widget
@@ -1,4 +1,4 @@
-#!/usr/local/bin/ruby
+#!/usr/bin/env ruby
 
 # tk 関係ライブラリの読み込み
 require 'tk'
diff --git a/ext/tk/sample/safe-tk.rb b/ext/tk/sample/safe-tk.rb
index 6b6de8f848..8be13a32d0 100644
--- a/ext/tk/sample/safe-tk.rb
+++ b/ext/tk/sample/safe-tk.rb
@@ -32,6 +32,7 @@ cmd = Proc.new{|txt|
 
   timer = TkTimer.new(50, -1, tick).start(0, proc{ label.text('0.00'); 0 })
 
+=begin
   TkButton.new(:text=>'Start') {
     command proc{ timer.continue unless timer.running? }
     pack(:side=>:left, :fill=>:both, :expand=>true)
@@ -44,6 +45,30 @@ cmd = Proc.new{|txt|
     command proc{ timer.stop if timer.running? }
     pack('side'=>'right','fill'=>'both','expand'=>'yes')
   }
+=end
+  b_start = TkButton.new(:text=>'Start', :state=>:disabled) {
+    pack(:side=>:left, :fill=>:both, :expand=>true)
+  }
+  b_stop  = TkButton.new(:text=>'Stop', :state=>:normal) {
+    pack('side'=>'left', 'fill'=>'both', 'expand'=>'yes')
+  }
+
+  b_start.command {
+    timer.continue
+    b_stop.state(:normal)
+    b_start.state(:disabled)
+  }
+
+  b_stop.command {
+    timer.stop
+    b_start.state(:normal)
+    b_stop.state(:disabled)
+  }
+
+  TkButton.new(:text=>'Reset', :state=>:normal) {
+    command { timer.reset }
+    pack('side'=>'right', 'fill'=>'both', 'expand'=>'yes')
+  }
 
   ev_quit = TkVirtualEvent.new('Control-c', 'Control-q')
   Tk.root.bind(ev_quit, proc{Tk.exit}).focus
diff --git a/ext/tk/sample/tkbiff.rb b/ext/tk/sample/tkbiff.rb
index 5fe367fd97..e89644bd9d 100644
--- a/ext/tk/sample/tkbiff.rb
+++ b/ext/tk/sample/tkbiff.rb
@@ -1,4 +1,4 @@
-#! /usr/local/bin/ruby
+#!/usr/bin/env ruby
 
 if ARGV[0] != '-d'
   unless $DEBUG
diff --git a/ext/tk/sample/tkbrowse.rb b/ext/tk/sample/tkbrowse.rb
index 882f0a489b..7395688e97 100644
--- a/ext/tk/sample/tkbrowse.rb
+++ b/ext/tk/sample/tkbrowse.rb
@@ -1,4 +1,4 @@
-#!/usr/local/bin/ruby
+#!/usr/bin/env ruby
 #
 # This script generates a directory browser, which lists the working
 # directory and allows you to open files or subdirectories by
diff --git a/ext/tk/sample/tkdialog.rb b/ext/tk/sample/tkdialog.rb
index 73708945fb..00cc12ab11 100644
--- a/ext/tk/sample/tkdialog.rb
+++ b/ext/tk/sample/tkdialog.rb
@@ -1,4 +1,4 @@
-#! /usr/local/bin/ruby
+#!/usr/bin/env ruby
 require "tk"
 
 root = TkFrame.new
diff --git a/ext/tk/sample/tkfrom.rb b/ext/tk/sample/tkfrom.rb
index e0e7f4810f..25f1d7c429 100644
--- a/ext/tk/sample/tkfrom.rb
+++ b/ext/tk/sample/tkfrom.rb
@@ -1,4 +1,4 @@
-#! /usr/local/bin/ruby
+#!/usr/bin/env ruby
 
 require "parsedate"
 require "base64"
diff --git a/ext/tk/sample/tktimer.rb b/ext/tk/sample/tktimer.rb
index 34377e2f39..b1adb5b506 100644
--- a/ext/tk/sample/tktimer.rb
+++ b/ext/tk/sample/tktimer.rb
@@ -1,4 +1,4 @@
-#!/usr/local/bin/ruby
+#!/usr/bin/env ruby
 # This script generates a counter with start and stop buttons.
 
 require "tk"
diff --git a/ext/tk/sample/tktimer3.rb b/ext/tk/sample/tktimer3.rb
new file mode 100644
index 0000000000..e3bb4c3e4a
--- /dev/null
+++ b/ext/tk/sample/tktimer3.rb
@@ -0,0 +1,59 @@
+#!/usr/bin/env ruby
+# This script is a re-implementation of tktimer.rb with TkTimer(TkAfter) class.
+
+require "tk"
+
+# new notation :
+#   * symbols are acceptable as keys or values of the option hash
+#   * the parent widget can be given by :parent key on the option hash 
+root = TkRoot.new(:title=>'timer sample')
+label = TkLabel.new(:parent=>root, :relief=>:raised, :width=>10) \
+               .pack(:side=>:bottom, :fill=>:both)
+
+# define the procedure repeated by the TkTimer object
+tick = proc{|aobj| #<== TkTimer object
+  cnt = aobj.return_value + 5 # return_value keeps a result of the last proc
+  label.text format("%d.%02d", *(cnt.divmod(100)))
+  cnt #==> return value is kept by TkTimer object
+      #    (so, can be send to the next repeat-proc)
+}
+
+timer = TkTimer.new(50, -1, tick).start(0, proc{ label.text('0.00'); 0 })
+        # ==> repeat-interval : (about) 50 ms,  
+        #     repeat : infinite (-1) times, 
+        #     repeat-procedure : tick (only one, in this case)
+        #
+        # ==> wait-before-call-init-proc : 0 ms, 
+        #     init_proc : proc{ label.text('0.00'); 0 }
+        #
+        # (0ms)-> init_proc ->(50ms)-> tick ->(50ms)-> tick ->....
+
+b_start = TkButton.new(:text=>'Start', :state=>:disabled) {
+  pack(:side=>:left, :fill=>:both, :expand=>true)
+}
+
+b_stop  = TkButton.new(:text=>'Stop', :state=>:normal) {
+  pack('side'=>'left', 'fill'=>'both', 'expand'=>'yes')
+}
+
+b_start.command {
+  timer.continue
+  b_stop.state(:normal)
+  b_start.state(:disabled)
+}
+
+b_stop.command {
+  timer.stop
+  b_start.state(:normal)
+  b_stop.state(:disabled)
+}
+
+TkButton.new(:text=>'Reset', :state=>:normal) {
+  command { timer.reset }
+  pack(:side=>:right, :fill=>:both, :expand=>:yes)
+}
+
+ev_quit = TkVirtualEvent.new('Control-c', 'Control-q')
+Tk.root.bind(ev_quit, proc{Tk.exit}).focus
+
+Tk.mainloop