* ext/tk/lib : improve framework of developping Tcl/Tk extension wrappers

* BWidget extension support on Ruby/Tk


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_8@6586 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

116 files changed, 3235 insertions, 413 deletions

diff --git a/ext/tk/lib/tk.rb b/ext/tk/lib/tk.rb
index 9cf2ac3e07..720f2060d2 100644
--- a/ext/tk/lib/tk.rb
+++ b/ext/tk/lib/tk.rb
@@ -807,8 +807,39 @@ module TkComm
       }
     end
   end
+
+  def _bind_core_for_event_class(klass, mode, what, context, cmd, args=nil)
+    id = install_bind_for_event_class(klass, cmd, args) if cmd
+    begin
+      tk_call_without_enc(*(what + ["<#{tk_event_sequence(context)}>", 
+			      mode + id]))
+    rescue
+      uninstall_cmd(id) if cmd
+      fail
+    end
+  end
+
+  def _bind_for_event_class(klass, what, context, cmd, args=nil)
+    _bind_core_for_event_class(klass, '', what, context, cmd, args)
+  end
+
+  def _bind_append_for_event_class(klass, what, context, cmd, args=nil)
+    _bind_core_for_event_class(klass, '+', what, context, cmd, args)
+  end
+
+  def _bind_remove_for_event_class(klass, what, context)
+    _bind_remove(what, context)
+  end
+
+  def _bindinfo_for_event_class(klass, what, context=nil)
+    _bindinfo(what, context)
+  end
+
   private :tk_event_sequence
   private :_bind_core, :_bind, :_bind_append, :_bind_remove, :_bindinfo
+  private :_bind_core_for_event_class, :_bind_for_event_class, 
+          :_bind_append_for_event_class, :_bind_remove_for_event_class, 
+          :_bindinfo_for_event_class
 
   def bind(tagOrClass, context, cmd=Proc.new, args=nil)
     _bind(["bind", tagOrClass], context, cmd, args)
@@ -1437,28 +1468,34 @@ module Tk
   def Tk.const_missing(sym)
     case(sym)
     when :TCL_LIBRARY
+      INTERP._invoke_without_enc('global', 'tcl_library')
       INTERP._invoke("set", "tcl_library").freeze
 
     when :TK_LIBRARY
+      INTERP._invoke_without_enc('global', 'tk_library')
       INTERP._invoke("set", "tk_library").freeze
 
     when :LIBRARY
       INTERP._invoke("info", "library").freeze
 
     #when :PKG_PATH, :PACKAGE_PATH, :TCL_PACKAGE_PATH
+    #  INTERP._invoke_without_enc('global', 'tcl_pkgPath')
     #  tk_split_simplelist(INTERP._invoke('set', 'tcl_pkgPath'))
 
     #when :LIB_PATH, :LIBRARY_PATH, :TCL_LIBRARY_PATH
+    #  INTERP._invoke_without_enc('global', 'tcl_libPath')
     #  tk_split_simplelist(INTERP._invoke('set', 'tcl_libPath'))
 
     when :PLATFORM, :TCL_PLATFORM
       if $SAFE >= 4
 	fail SecurityError, "can't get #{sym} when $SAFE >= 4"
       end
+      INTERP._invoke_without_enc('global', 'tcl_platform')
       Hash[*tk_split_simplelist(INTERP._invoke_without_enc('array', 'get', 
 							   'tcl_platform'))]
 
     when :ENV
+      INTERP._invoke_without_enc('global', 'env')
       Hash[*tk_split_simplelist(INTERP._invoke('array', 'get', 'env'))]
 
     #when :AUTO_PATH   #<=== 
@@ -1468,6 +1505,7 @@ module Tk
     #  tk_split_simplelist(INTERP._invoke('set', 'auto_oldpath'))
 
     when :AUTO_INDEX
+      INTERP._invoke_without_enc('global', 'auto_index')
       Hash[*tk_split_simplelist(INTERP._invoke('array', 'get', 'auto_index'))]
 
     when :PRIV, :PRIVATE, :TK_PRIV
@@ -1477,6 +1515,7 @@ module Tk
       else
 	var_nam = 'tkPriv'
       end
+      INTERP._invoke_without_enc('global', var_nam)
       Hash[*tk_split_simplelist(INTERP._invoke('array', 'get', 
 					       var_nam))].each{|k,v|
 	k.freeze
@@ -2302,6 +2341,15 @@ module TkConfigMethod
 
   ################################
 
+  def [](id)
+    cget(id)
+  end
+
+  def []=(id, val)
+    configure(id, val)
+    val
+  end
+
   def cget(slot)
     slot = slot.to_s
 
@@ -3031,6 +3079,7 @@ class TkObject<TkKernel
     end
   end
 
+=begin
   def [](id)
     cget(id)
   end
@@ -3039,6 +3088,7 @@ class TkObject<TkKernel
     configure(id, val)
     val
   end
+=end
 
   def event_generate(context, keys=nil)
     if keys
diff --git a/ext/tk/lib/tk/button.rb b/ext/tk/lib/tk/button.rb
index 15e87c300d..407a47c400 100644
--- a/ext/tk/lib/tk/button.rb
+++ b/ext/tk/lib/tk/button.rb
@@ -8,14 +8,14 @@ class TkButton<TkLabel
   TkCommandNames = ['button'.freeze].freeze
   WidgetClassName = 'Button'.freeze
   WidgetClassNames[WidgetClassName] = self
-  def create_self(keys)
-    if keys and keys != None
-      tk_call_without_enc('button', @path, *hash_kv(keys, true))
-    else
-      tk_call_without_enc('button', @path)
-    end
-  end
-  private :create_self
+  #def create_self(keys)
+  #  if keys and keys != None
+  #    tk_call_without_enc('button', @path, *hash_kv(keys, true))
+  #  else
+  #    tk_call_without_enc('button', @path)
+  #  end
+  #end
+  #private :create_self
 
   def invoke
     _fromUTF8(tk_send_without_enc('invoke'))
diff --git a/ext/tk/lib/tk/canvas.rb b/ext/tk/lib/tk/canvas.rb
index 17a05c0ce1..0f3a4fc482 100644
--- a/ext/tk/lib/tk/canvas.rb
+++ b/ext/tk/lib/tk/canvas.rb
@@ -40,20 +40,21 @@ class TkCanvas<TkWindow
     TkcItem::CItemID_TBL.delete(@path)
   end
 
-  def create_self(keys)
-    if keys and keys != None
-      tk_call_without_enc('canvas', @path, *hash_kv(keys, true))
-    else
-      tk_call_without_enc('canvas', @path)
-    end
-  end
-  private :create_self
+  #def create_self(keys)
+  #  if keys and keys != None
+  #    tk_call_without_enc('canvas', @path, *hash_kv(keys, true))
+  #  else
+  #    tk_call_without_enc('canvas', @path)
+  #  end
+  #end
+  #private :create_self
 
   def tagid(tag)
     if tag.kind_of?(TkcItem) || tag.kind_of?(TkcTag)
       tag.id
     else
-      tag
+      # tag
+      _get_eval_string(tag)
     end
   end
   private :tagid
diff --git a/ext/tk/lib/tk/canvastag.rb b/ext/tk/lib/tk/canvastag.rb
index 056bf74c05..1db7b7b768 100644
--- a/ext/tk/lib/tk/canvastag.rb
+++ b/ext/tk/lib/tk/canvastag.rb
@@ -316,7 +316,8 @@ end
 
 class TkcGroup<TkcTag
   Tk_cGroup_ID = ['tkcg'.freeze, '00000'.taint].freeze
-  def create_self(parent, *args)
+  #def create_self(parent, *args)
+  def initialize(parent, *args)
     unless parent.kind_of?(TkCanvas)
       fail ArguemntError, "expect TkCanvas for 1st argument"
     end
@@ -329,7 +330,7 @@ class TkcGroup<TkcTag
     Tk_cGroup_ID[1].succ!
     add(*args) if args != []
   end
-  private :create_self
+  #private :create_self
   
   def include(*tags)
     for i in tags
diff --git a/ext/tk/lib/tk/checkbutton.rb b/ext/tk/lib/tk/checkbutton.rb
index a1ee5e8764..d76d99c0f2 100644
--- a/ext/tk/lib/tk/checkbutton.rb
+++ b/ext/tk/lib/tk/checkbutton.rb
@@ -8,14 +8,14 @@ class TkCheckButton<TkRadioButton
   TkCommandNames = ['checkbutton'.freeze].freeze
   WidgetClassName = 'Checkbutton'.freeze
   WidgetClassNames[WidgetClassName] = self
-  def create_self(keys)
-    if keys and keys != None
-      tk_call_without_enc('checkbutton', @path, *hash_kv(keys, true))
-    else
-      tk_call_without_enc('checkbutton', @path)
-    end
-  end
-  private :create_self
+  #def create_self(keys)
+  #  if keys and keys != None
+  #    tk_call_without_enc('checkbutton', @path, *hash_kv(keys, true))
+  #  else
+  #    tk_call_without_enc('checkbutton', @path)
+  #  end
+  #end
+  #private :create_self
 
   def toggle
     tk_send_without_enc('toggle')
diff --git a/ext/tk/lib/tk/dialog.rb b/ext/tk/lib/tk/dialog.rb
index 30521e126a..d6355f21c1 100644
--- a/ext/tk/lib/tk/dialog.rb
+++ b/ext/tk/lib/tk/dialog.rb
@@ -162,8 +162,11 @@ class TkDialog2 < TkWindow
     #	       @path+" "+@title+" {#{@message}} "+@bitmap+" "+
     #	       String(default_button)+" "+@buttons.join(' ')+']}')
     Tk.ip_eval(@config)
-    @val = Tk.ip_eval('tk_dialog ' + @path + ' ' + @title + 
-		      ' {' + @message + '} ' + @bitmap + ' ' + 
+    # @val = Tk.ip_eval('tk_dialog ' + @path + ' ' + @title + 
+    #		      ' {' + @message + '} ' + @bitmap + ' ' + 
+    #		      String(default_button) + ' ' + @buttons.join(' ')).to_i
+    @val = Tk.ip_eval(self.class::TkCommandNames[0] + ' ' + @path + ' ' + 
+		      @title + ' {' + @message + '} ' + @bitmap + ' ' + 
 		      String(default_button) + ' ' + @buttons.join(' ')).to_i
   end
 
diff --git a/ext/tk/lib/tk/entry.rb b/ext/tk/lib/tk/entry.rb
index 2077c1e9e4..f125739417 100644
--- a/ext/tk/lib/tk/entry.rb
+++ b/ext/tk/lib/tk/entry.rb
@@ -16,14 +16,13 @@ class TkEntry<TkLabel
   WidgetClassName = 'Entry'.freeze
   WidgetClassNames[WidgetClassName] = self
 
-
-  def create_self(keys)
-    tk_call_without_enc('entry', @path)
-    if keys and keys != None
-      configure(keys)
-    end
-  end
-  private :create_self
+  #def create_self(keys)
+  #  tk_call_without_enc('entry', @path)
+  #  if keys and keys != None
+  #    configure(keys)
+  #  end
+  #end
+  #private :create_self
 
   def bbox(index)
     list(tk_send_without_enc('bbox', index))
diff --git a/ext/tk/lib/tk/event.rb b/ext/tk/lib/tk/event.rb
index 4c6c0844b2..19fd9dbf00 100644
--- a/ext/tk/lib/tk/event.rb
+++ b/ext/tk/lib/tk/event.rb
@@ -117,9 +117,21 @@ module TkEvent
     #     that is generated by _get_subst_key() or _get_all_subst_keys(). 
     #
     _setup_subst_table(KEY_TBL, PROC_TBL);
+
+
+    # If you need support extra arguments given by Tcl/Tk, 
+    # please override _get_extra_args_tbl
+    #
+    #def self._get_extra_args_tbl
+    #  # return an array of convert procs
+    #  []
+    #end
+
   end
 
   def install_bind_for_event_class(klass, cmd, *args)
+    extra_args_tbl = klass._get_extra_args_tbl
+
     if args.compact.size > 0
       args = args.join(' ')
       keys = klass._get_subst_key(args)
@@ -130,7 +142,9 @@ module TkEvent
 	id = install_cmd(cmd)
       else
 	id = install_cmd(proc{|*arg|
-	  TkUtil.eval_cmd(cmd, *klass.scan_args(keys, arg))
+	  ex_args = []
+	  extra_args_tbl.reverse_each{|conv| ex_args << conv.call(arg.pop)}
+	  TkUtil.eval_cmd(cmd, *(ex_args.concat(klass.scan_args(keys, arg))))
         })
       end
       id + ' ' + args
@@ -143,7 +157,10 @@ module TkEvent
 	id = install_cmd(cmd)
       else
         id = install_cmd(proc{|*arg|
-	  TkUtil.eval_cmd(cmd, klass.new(*klass.scan_args(keys, arg)))
+	  ex_args = []
+	  extra_args_tbl.reverse_each{|conv| ex_args << conv.call(arg.pop)}
+	  TkUtil.eval_cmd(cmd, 
+			  *(ex_args << klass.new(*klass.scan_args(keys, arg))))
         })
       end
       id + ' ' + args
@@ -151,7 +168,7 @@ module TkEvent
   end
 
   def install_bind(cmd, *args)
-    install_bind_for_event_class(Event, cmd, *args)
+    install_bind_for_event_class(TkEvent::Event, cmd, *args)
   end
 end
 
diff --git a/ext/tk/lib/tk/font.rb b/ext/tk/lib/tk/font.rb
index b4c5c79213..527584f1ed 100644
--- a/ext/tk/lib/tk/font.rb
+++ b/ext/tk/lib/tk/font.rb
@@ -197,7 +197,7 @@ class TkFont
 
   def TkFont.init_widget_font(pathname, *args)
     win, tag, key = pathname.split(';')
-    key = 'font' unless key
+    key = 'font' if key == nil || key == ''
     path = [win, tag, key].join(';')
 
     case (Tk::TK_VERSION)
@@ -868,7 +868,7 @@ class TkFont
 	begin
 	  if w.include?(';')
 	    win, tag, optkey = w.split(';')
-	    optkey = 'font' unless optkey
+	    optkey = 'font' if optkey == nil || optkey == ''
 	    winobj = tk_tcl2ruby(win)
 #	    winobj.tagfont_configure(tag, {'font'=>@latinfont})
 	    if winobj.kind_of? TkText
diff --git a/ext/tk/lib/tk/frame.rb b/ext/tk/lib/tk/frame.rb
index 6598ceb55c..4f01825da9 100644
--- a/ext/tk/lib/tk/frame.rb
+++ b/ext/tk/lib/tk/frame.rb
@@ -32,7 +32,7 @@ class TkFrame<TkWindow
 
   def initialize(parent=nil, keys=nil)
     my_class_name = nil
-    if self.class < WidgetClassNames[WidgetClassName]
+    if self.class < WidgetClassNames[self.class::WidgetClassName]
       my_class_name = self.class.name
       my_class_name = nil if my_class_name == ''
     end
@@ -68,14 +68,14 @@ class TkFrame<TkWindow
     super(keys)
   end
 
-  def create_self(keys)
-    if keys and keys != None
-      tk_call_without_enc('frame', @path, *hash_kv(keys))
-    else
-      tk_call_without_enc( 'frame', @path)
-    end
-  end
-  private :create_self
+  #def create_self(keys)
+  #  if keys and keys != None
+  #    tk_call_without_enc('frame', @path, *hash_kv(keys))
+  #  else
+  #    tk_call_without_enc( 'frame', @path)
+  #  end
+  #end
+  #private :create_self
 
   def database_classname
     @classname
diff --git a/ext/tk/lib/tk/itemconfig.rb b/ext/tk/lib/tk/itemconfig.rb
index b1cc776748..2714500419 100644
--- a/ext/tk/lib/tk/itemconfig.rb
+++ b/ext/tk/lib/tk/itemconfig.rb
@@ -105,6 +105,13 @@ module TkItemConfigMethod
 
   ################################################
 
+  def tagid(tagOrId)
+    # maybe need to override
+    tagOrId
+  end
+
+  ################################################
+
   def itemcget(tagOrId, option)
     option = option.to_s
 
diff --git a/ext/tk/lib/tk/itemfont.rb b/ext/tk/lib/tk/itemfont.rb
index f653755b06..f194595d57 100644
--- a/ext/tk/lib/tk/itemfont.rb
+++ b/ext/tk/lib/tk/itemfont.rb
@@ -28,7 +28,7 @@ module TkTreatItemFont
       fail ArgumentError, "unknown font option name `#{key}'"
     end
 
-    win, tag = __item_pathname(tagid(tagOrId)).split(':')
+    win, tag = __item_pathname(tagid(tagOrId)).split(';')
 
     if key
       pathname = [win, tag, key].join(';')
@@ -130,7 +130,7 @@ module TkTreatItemFont
       fail ArgumentError, "unknown font option name `#{key}'"
     end
 
-    win, tag = __item_pathname(tagid(tagOrId)).split(':')
+    win, tag = __item_pathname(tagid(tagOrId)).split(';')
 
     optkeys = [key] if key
 
@@ -181,7 +181,7 @@ module TkTreatItemFont
       fail ArgumentError, "unknown font option name `#{key}'"
     end
 
-    win, tag = __item_pathname(tagid(tagOrId)).split(':')
+    win, tag = __item_pathname(tagid(tagOrId)).split(';')
 
     optkeys = [key] if key
 
diff --git a/ext/tk/lib/tk/label.rb b/ext/tk/lib/tk/label.rb
index fe2640958d..ea669d576e 100644
--- a/ext/tk/lib/tk/label.rb
+++ b/ext/tk/lib/tk/label.rb
@@ -7,14 +7,14 @@ class TkLabel<TkWindow
   TkCommandNames = ['label'.freeze].freeze
   WidgetClassName = 'Label'.freeze
   WidgetClassNames[WidgetClassName] = self
-  def create_self(keys)
-    if keys and keys != None
-      tk_call_without_enc('label', @path, *hash_kv(keys, true))
-    else
-      tk_call_without_enc('label', @path)
-    end
-  end
-  private :create_self
+  #def create_self(keys)
+  #  if keys and keys != None
+  #    tk_call_without_enc('label', @path, *hash_kv(keys, true))
+  #  else
+  #    tk_call_without_enc('label', @path)
+  #  end
+  #end
+  #private :create_self
 
   def textvariable(v)
     configure 'textvariable', tk_trace_variable(v)
diff --git a/ext/tk/lib/tk/labelframe.rb b/ext/tk/lib/tk/labelframe.rb
index fa658848c8..fd16d3419d 100644
--- a/ext/tk/lib/tk/labelframe.rb
+++ b/ext/tk/lib/tk/labelframe.rb
@@ -8,13 +8,13 @@ class TkLabelFrame<TkFrame
   TkCommandNames = ['labelframe'.freeze].freeze
   WidgetClassName = 'Labelframe'.freeze
   WidgetClassNames[WidgetClassName] = self
-  def create_self(keys)
-    if keys and keys != None
-      tk_call_without_enc('labelframe', @path, *hash_kv(keys, true))
-    else
-      tk_call_without_enc('labelframe', @path)
-    end
-  end
-  private :create_self
+  #def create_self(keys)
+  #  if keys and keys != None
+  #    tk_call_without_enc('labelframe', @path, *hash_kv(keys, true))
+  #  else
+  #    tk_call_without_enc('labelframe', @path)
+  #  end
+  #end
+  #private :create_self
 end
 TkLabelframe = TkLabelFrame
diff --git a/ext/tk/lib/tk/listbox.rb b/ext/tk/lib/tk/listbox.rb
index 799d573b1d..70df0ad685 100644
--- a/ext/tk/lib/tk/listbox.rb
+++ b/ext/tk/lib/tk/listbox.rb
@@ -23,17 +23,18 @@ class TkListbox<TkTextWin
   WidgetClassName = 'Listbox'.freeze
   WidgetClassNames[WidgetClassName] = self
 
-  def create_self(keys)
-    if keys and keys != None
-      tk_call_without_enc('listbox', @path, *hash_kv(keys, true))
-    else
-      tk_call_without_enc('listbox', @path)
-    end
-  end
-  private :create_self
+  #def create_self(keys)
+  #  if keys and keys != None
+  #    tk_call_without_enc('listbox', @path, *hash_kv(keys, true))
+  #  else
+  #    tk_call_without_enc('listbox', @path)
+  #  end
+  #end
+  #private :create_self
 
   def tagid(id)
-    id.to_s
+    #id.to_s
+    _get_eval_string(id)
   end
 
   def activate(y)
diff --git a/ext/tk/lib/tk/menu.rb b/ext/tk/lib/tk/menu.rb
index f5a16cf3cf..fdb4ec201b 100644
--- a/ext/tk/lib/tk/menu.rb
+++ b/ext/tk/lib/tk/menu.rb
@@ -38,17 +38,18 @@ class TkMenu<TkWindow
   WidgetClassName = 'Menu'.freeze
   WidgetClassNames[WidgetClassName] = self
 
-  def create_self(keys)
-    if keys and keys != None
-      tk_call_without_enc('menu', @path, *hash_kv(keys, true))
-    else
-      tk_call_without_enc('menu', @path)
-    end
-  end
-  private :create_self
+  #def create_self(keys)
+  #  if keys and keys != None
+  #    tk_call_without_enc('menu', @path, *hash_kv(keys, true))
+  #  else
+  #    tk_call_without_enc('menu', @path)
+  #  end
+  #end
+  #private :create_self
 
   def tagid(id)
-    id.to_s
+    #id.to_s
+    _get_eval_string(id)
   end
 
   def activate(index)
diff --git a/ext/tk/lib/tk/message.rb b/ext/tk/lib/tk/message.rb
index b359800142..79121bebb3 100644
--- a/ext/tk/lib/tk/message.rb
+++ b/ext/tk/lib/tk/message.rb
@@ -8,12 +8,12 @@ class TkMessage<TkLabel
   TkCommandNames = ['message'.freeze].freeze
   WidgetClassName = 'Message'.freeze
   WidgetClassNames[WidgetClassName] = self
-  def create_self(keys)
-    if keys and keys != None
-      tk_call_without_enc('message', @path, *hash_kv(keys, true))
-    else
-      tk_call_without_enc('message', @path)
-    end
-  end
+  #def create_self(keys)
+  #  if keys and keys != None
+  #    tk_call_without_enc('message', @path, *hash_kv(keys, true))
+  #  else
+  #    tk_call_without_enc('message', @path)
+  #  end
+  #end
   private :create_self
 end
diff --git a/ext/tk/lib/tk/optiondb.rb b/ext/tk/lib/tk/optiondb.rb
index 46d17a2020..db735d929a 100644
--- a/ext/tk/lib/tk/optiondb.rb
+++ b/ext/tk/lib/tk/optiondb.rb
@@ -34,7 +34,8 @@ module TkOptionDB
   def readfile(file, pri=None)
     tk_call('option', 'readfile', file, pri)
   end
-  module_function :add, :clear, :get, :readfile
+  alias read_file readfile
+  module_function :add, :clear, :get, :readfile, :read_file
 
   def read_entries(file, f_enc=nil)
     if TkCore::INTERP.safe?
diff --git a/ext/tk/lib/tk/panedwindow.rb b/ext/tk/lib/tk/panedwindow.rb
index 1cfc7bad7a..1e0430b606 100644
--- a/ext/tk/lib/tk/panedwindow.rb
+++ b/ext/tk/lib/tk/panedwindow.rb
@@ -7,14 +7,14 @@ class TkPanedWindow<TkWindow
   TkCommandNames = ['panedwindow'.freeze].freeze
   WidgetClassName = 'Panedwindow'.freeze
   WidgetClassNames[WidgetClassName] = self
-  def create_self(keys)
-    if keys and keys != None
-      tk_call_without_enc('panedwindow', @path, *hash_kv(keys, true))
-    else
-      tk_call_without_enc('panedwindow', @path)
-    end
-  end
-  private :create_self
+  #def create_self(keys)
+  #  if keys and keys != None
+  #    tk_call_without_enc('panedwindow', @path, *hash_kv(keys, true))
+  #  else
+  #    tk_call_without_enc('panedwindow', @path)
+  #  end
+  #end
+  #private :create_self
 
   def add(*args)
     keys = args.pop
diff --git a/ext/tk/lib/tk/radiobutton.rb b/ext/tk/lib/tk/radiobutton.rb
index e00f0a03eb..697c021283 100644
--- a/ext/tk/lib/tk/radiobutton.rb
+++ b/ext/tk/lib/tk/radiobutton.rb
@@ -8,14 +8,14 @@ class TkRadioButton<TkButton
   TkCommandNames = ['radiobutton'.freeze].freeze
   WidgetClassName = 'Radiobutton'.freeze
   WidgetClassNames[WidgetClassName] = self
-  def create_self(keys)
-    if keys and keys != None
-      tk_call_without_enc('radiobutton', @path, *hash_kv(keys, true))
-    else
-      tk_call_without_enc('radiobutton', @path)
-    end
-  end
-  private :create_self
+  #def create_self(keys)
+  #  if keys and keys != None
+  #    tk_call_without_enc('radiobutton', @path, *hash_kv(keys, true))
+  #  else
+  #    tk_call_without_enc('radiobutton', @path)
+  #  end
+  #end
+  #private :create_self
 
   def deselect
     tk_send_without_enc('deselect')
diff --git a/ext/tk/lib/tk/scale.rb b/ext/tk/lib/tk/scale.rb
index 9398a6cd52..135a0cf62d 100644
--- a/ext/tk/lib/tk/scale.rb
+++ b/ext/tk/lib/tk/scale.rb
@@ -10,13 +10,16 @@ class TkScale<TkWindow
 
   def create_self(keys)
     if keys and keys != None
-      if keys.key?('command')
+      if keys.key?('command') && ! keys['command'].kind_of?(String)
 	cmd = keys.delete('command')
 	keys['command'] = proc{|val| cmd.call(val.to_f)}
       end
-      tk_call_without_enc('scale', @path, *hash_kv(keys, true))
+      #tk_call_without_enc('scale', @path, *hash_kv(keys, true))
+      tk_call_without_enc(self.class::TkCommandNames[0], @path, 
+			  *hash_kv(keys, true))
     else
-      tk_call_without_enc('scale', @path)
+      #tk_call_without_enc('scale', @path)
+      tk_call_without_enc(self.class::TkCommandNames[0], @path)
     end
   end
   private :create_self
diff --git a/ext/tk/lib/tk/scrollable.rb b/ext/tk/lib/tk/scrollable.rb
index c5f4fdb70c..6e10ef51a2 100644
--- a/ext/tk/lib/tk/scrollable.rb
+++ b/ext/tk/lib/tk/scrollable.rb
@@ -52,8 +52,8 @@ module Tk
 	@xscrollbar.orient 'horizontal'
 	self.xscrollcommand {|*arg| @xscrollbar.set(*arg)}
 	@xscrollbar.command {|*arg| self.xview(*arg)}
+	Tk.update  # avoid scrollbar trouble
       end
-      Tk.update  # avoid scrollbar trouble
       @xscrollbar
     end
     def yscrollbar(bar=nil)
@@ -62,8 +62,8 @@ module Tk
 	@yscrollbar.orient 'vertical'
 	self.yscrollcommand {|*arg| @yscrollbar.set(*arg)}
 	@yscrollbar.command {|*arg| self.yview(*arg)}
+	Tk.update  # avoid scrollbar trouble
       end
-      Tk.update  # avoid scrollbar trouble
       @yscrollbar
     end
   end
diff --git a/ext/tk/lib/tk/scrollbar.rb b/ext/tk/lib/tk/scrollbar.rb
index 8d4d40322d..98b0247207 100644
--- a/ext/tk/lib/tk/scrollbar.rb
+++ b/ext/tk/lib/tk/scrollbar.rb
@@ -19,9 +19,12 @@ class TkScrollbar<TkWindow
     }
 
     if keys and keys != None
-      tk_call_without_enc('scrollbar', @path, *hash_kv(keys, true))
+      #tk_call_without_enc('scrollbar', @path, *hash_kv(keys, true))
+      tk_call_without_enc(self.class::TkCommandNames[0], @path, 
+			  *hash_kv(keys, true))
     else
-      tk_call_without_enc('scrollbar', @path)
+      #tk_call_without_enc('scrollbar', @path)
+      tk_call_without_enc(self.class::TkCommandNames[0], @path)
     end
   end
   private :create_self
diff --git a/ext/tk/lib/tk/spinbox.rb b/ext/tk/lib/tk/spinbox.rb
index 1c58f9199b..664df61755 100644
--- a/ext/tk/lib/tk/spinbox.rb
+++ b/ext/tk/lib/tk/spinbox.rb
@@ -11,13 +11,13 @@ class TkSpinbox<TkEntry
   WidgetClassName = 'Spinbox'.freeze
   WidgetClassNames[WidgetClassName] = self
 
-  def create_self(keys)
-    tk_call_without_enc('spinbox', @path)
-    if keys and keys != None
-      configure(keys)
-    end
-  end
-  private :create_self
+  #def create_self(keys)
+  #  tk_call_without_enc('spinbox', @path)
+  #  if keys and keys != None
+  #    configure(keys)
+  #  end
+  #end
+  #private :create_self
 
   def identify(x, y)
     tk_send_without_enc('identify', x, y)
diff --git a/ext/tk/lib/tk/text.rb b/ext/tk/lib/tk/text.rb
index 7593b59368..b992db5ff0 100644
--- a/ext/tk/lib/tk/text.rb
+++ b/ext/tk/lib/tk/text.rb
@@ -88,11 +88,15 @@ class TkText<TkTextWin
   end
 
   def create_self(keys)
-    if keys and keys != None
-      tk_call_without_enc('text', @path, *hash_kv(keys, true))
-    else
-      tk_call_without_enc('text', @path)
-    end
+    #if keys and keys != None
+    #  #tk_call_without_enc('text', @path, *hash_kv(keys, true))
+    #  tk_call_without_enc(self.class::TkCommandNames[0], @path, 
+    #			  *hash_kv(keys, true))
+    #else
+    #  #tk_call_without_enc('text', @path)
+    #  tk_call_without_enc(self.class::TkCommandNames[0], @path)
+    #end
+    super(keys)
     init_instance_variable
   end
   private :create_self
@@ -131,7 +135,8 @@ class TkText<TkTextWin
       || tag.kind_of?(TkTextWindow)
       tag.id
     else
-      tag
+      # tag
+      _get_eval_string(tag)
     end
   end
   private :tagid
diff --git a/ext/tk/lib/tk/toplevel.rb b/ext/tk/lib/tk/toplevel.rb
index c95002dbeb..1984952248 100644
--- a/ext/tk/lib/tk/toplevel.rb
+++ b/ext/tk/lib/tk/toplevel.rb
@@ -158,14 +158,14 @@ class TkToplevel<TkWindow
     }
   end
 
-  def create_self(keys)
-    if keys and keys != None
-      tk_call_without_enc('toplevel', @path, *hash_kv(keys, true))
-    else
-      tk_call_without_enc('toplevel', @path)
-    end
-  end
-  private :create_self
+  #def create_self(keys)
+  #  if keys and keys != None
+  #    tk_call_without_enc('toplevel', @path, *hash_kv(keys, true))
+  #  else
+  #    tk_call_without_enc('toplevel', @path)
+  #  end
+  #end
+  #private :create_self
 
   def specific_class
     @classname
diff --git a/ext/tk/lib/tk/txtwin_abst.rb b/ext/tk/lib/tk/txtwin_abst.rb
index 63da9da11d..5520360eab 100644
--- a/ext/tk/lib/tk/txtwin_abst.rb
+++ b/ext/tk/lib/tk/txtwin_abst.rb
@@ -4,10 +4,11 @@
 require 'tk'
 
 class TkTextWin<TkWindow
-  def create_self
-    fail RuntimeError, "TkTextWin is an abstract class"
-  end
-  private :create_self
+  TkCommnadNames = [].freeze
+  #def create_self
+  #  fail RuntimeError, "TkTextWin is an abstract class"
+  #end
+  #private :create_self
 
   def bbox(index)
     list(tk_send_without_enc('bbox', index))
diff --git a/ext/tk/lib/tk/validation.rb b/ext/tk/lib/tk/validation.rb
index 0524a43757..30111f20cc 100644
--- a/ext/tk/lib/tk/validation.rb
+++ b/ext/tk/lib/tk/validation.rb
@@ -158,6 +158,15 @@ module TkValidation
       ]
 
       _setup_subst_table(KEY_TBL, PROC_TBL);
+
+      def self.ret_val(val)
+	(val)? '1': '0'
+      end
+
+      #def self._get_extra_args_tbl
+      #  # return an array of convert procs
+      #  []
+      #end
     end
 
     ##############################
@@ -168,6 +177,8 @@ module TkValidation
     end
 
     def _initialize_for_cb_class(klass, cmd = Proc.new, *args)
+      extra_args_tbl = klass._get_extra_args_tbl
+
       if args.compact.size > 0
 	args = args.join(' ')
 	keys = klass._get_subst_key(args)
@@ -177,7 +188,11 @@ module TkValidation
 	  @id = install_cmd(cmd)
 	else
 	  @id = install_cmd(proc{|*arg|
-	     (cmd.call(*klass.scan_args(keys, arg)))? '1':'0'
+	     ex_args = []
+	     extra_args_tbl.reverse_each{|conv| ex_args << conv.call(args.pop)}
+	     klass.ret_val(cmd.call(
+               *(ex_args.concat(klass.scan_args(keys, arg)))
+             ))
 	  }) + ' ' + args
 	end
       else
@@ -188,9 +203,11 @@ module TkValidation
 	  @id = install_cmd(cmd)
 	else
 	  @id = install_cmd(proc{|*arg|
-	     (cmd.call(
-                klass.new(*klass.scan_args(keys,arg)))
-             )? '1': '0'
+	     ex_args = []
+	     extra_args_tbl.reverse_each{|conv| ex_args << conv.call(args.pop)}
+	     klass.ret_val(cmd.call(
+               *(ex_args << klass.new(*klass.scan_args(keys,arg)))
+	     ))
 	  }) + ' ' + args
 	end
       end
diff --git a/ext/tk/lib/tk/variable.rb b/ext/tk/lib/tk/variable.rb
index 61d6e8a410..bfa19fc18d 100644
--- a/ext/tk/lib/tk/variable.rb
+++ b/ext/tk/lib/tk/variable.rb
@@ -197,8 +197,13 @@ TkCore::INTERP.add_tk_procs('rb_var', 'args', <<-'EOL')
     @id
   end
 
+  def ref(*idxs)
+    "#{@id}(#{idxs.collect{|idx| _get_eval_string(idx)}.join(',')})"
+  end
+
   def is_hash?
     #ITNERP._eval("global #{@id}; array exist #{@id}") == '1'
+    INTERP._invoke_without_enc('global', @id)
     INTERP._invoke_without_enc('array', 'exist', @id) == '1'
   end
 
@@ -211,6 +216,7 @@ TkCore::INTERP.add_tk_procs('rb_var', 'args', <<-'EOL')
       fail RuntimeError, 'cannot get keys from a scalar variable'
     end
     #tk_split_simplelist(INTERP._eval("global #{@id}; array get #{@id}"))
+    INTERP._invoke_without_enc('global', @id)
     tk_split_simplelist(INTERP._fromUTF8(INTERP._invoke_without_enc('array', 'names', @id)))
   end
 
@@ -242,6 +248,7 @@ if USE_TCLs_SET_VARIABLE_FUNCTIONS
 
   def value
     #if INTERP._eval("global #{@id}; array exist #{@id}") == '1'
+    INTERP._invoke_without_enc('global', @id)
     if INTERP._invoke('array', 'exist', @id) == '1'
       #Hash[*tk_split_simplelist(INTERP._eval("global #{@id}; array get #{@id}"))]
       Hash[*tk_split_simplelist(INTERP._invoke('array', 'get', @id))]
@@ -277,16 +284,21 @@ if USE_TCLs_SET_VARIABLE_FUNCTIONS
     end
   end
 
-  def [](index)
+  def [](*idxs)
+    index = idxs.collect{|idx| _get_eval_string(idx, true)}.join(',')
+    _fromUTF8(INTERP._get_global_var2(@id, index))
     #_fromUTF8(INTERP._get_global_var2(@id, _toUTF8(_get_eval_string(index))))
-    _fromUTF8(INTERP._get_global_var2(@id, _get_eval_string(index, true)))
+    #_fromUTF8(INTERP._get_global_var2(@id, _get_eval_string(index, true)))
   end
 
-  def []=(index,val)
+  def []=(*args)
+    val = args.pop
+    index = args.collect{|idx| _get_eval_string(idx, true)}.join(',')
+    _fromUTF8(INTERP._set_global_var2(@id, index, _get_eval_string(val, true)))
     #_fromUTF8(INTERP._set_global_var2(@id, _toUTF8(_get_eval_string(index)), 
     #				      _toUTF8(_get_eval_string(val))))
-    _fromUTF8(INTERP._set_global_var2(@id, _get_eval_string(index, true), 
-				      _get_eval_string(val, true)))
+    #_fromUTF8(INTERP._set_global_var2(@id, _get_eval_string(index, true), 
+    #				      _get_eval_string(val, true)))
   end
 
   def unset(elem=nil)
@@ -371,16 +383,22 @@ else
     end
   end
 
-  def [](index)
-    INTERP._eval(Kernel.format('global %s; set %s(%s)', 
-                               @id, @id, _get_eval_string(index)))
+  def [](*idxs)
+    index = idxs.collect{|idx| _get_eval_string(idx)}.join(',')
+    INTERP._eval(Kernel.format('global %s; set %s(%s)', @id, @id, index))
+    #INTERP._eval(Kernel.format('global %s; set %s(%s)', 
+    #                           @id, @id, _get_eval_string(index)))
     #INTERP._eval(Kernel.format('set %s(%s)', @id, _get_eval_string(index)))
     #INTERP._eval('set ' + @id + '(' + _get_eval_string(index) + ')')
   end
 
-  def []=(index,val)
+  def []=(*args)
+    val = args.pop
+    index = args.collect{|idx| _get_eval_string(idx)}.join(',')
     INTERP._eval(Kernel.format('global %s; set %s(%s) %s', @id, @id, 
-                              _get_eval_string(index), _get_eval_string(val)))
+                              index, _get_eval_string(val)))
+    #INTERP._eval(Kernel.format('global %s; set %s(%s) %s', @id, @id, 
+    #                          _get_eval_string(index), _get_eval_string(val)))
     #INTERP._eval(Kernel.format('set %s(%s) %s', @id, 
     #			       _get_eval_string(index), _get_eval_string(val)))
     #INTERP._eval('set ' + @id + '(' + _get_eval_string(index) + ') ' + 
@@ -869,6 +887,7 @@ class TkVarAccess<TkVariable
 
   def self.new_hash(name, *args)
     return TkVar_ID_TBL[name] if TkVar_ID_TBL[name]
+    INTERP._invoke_without_enc('global', name)
     if args.empty? && INTERP._invoke_without_enc('array', 'exist', name) == '0'
       self.new(name, {})  # force creating
     else
diff --git a/ext/tk/lib/tk/wm.rb b/ext/tk/lib/tk/wm.rb
index 2467656837..b5106adade 100644
--- a/ext/tk/lib/tk/wm.rb
+++ b/ext/tk/lib/tk/wm.rb
@@ -178,10 +178,13 @@ module Tk
 	self
       end
     end
-    def protocol(name=nil, cmd=nil)
+    def protocol(name=nil, cmd=nil, &b)
       if cmd
 	tk_call_without_enc('wm', 'protocol', path, name, cmd)
 	self
+      elsif b
+	tk_call_without_enc('wm', 'protocol', path, name, proc(&b))
+	self
       elsif name
 	result = tk_call_without_enc('wm', 'protocol', path, name)
 	(result == "")? nil : tk_tcl2ruby(result)
diff --git a/ext/tk/lib/tkextlib/ICONS.rb b/ext/tk/lib/tkextlib/ICONS.rb
index 84f4204c60..18d84c05e9 100644
--- a/ext/tk/lib/tkextlib/ICONS.rb
+++ b/ext/tk/lib/tkextlib/ICONS.rb
@@ -6,11 +6,8 @@
 # call setup script for general 'tkextlib' libraries
 require 'tkextlib/setup.rb'
 
-# library directory
-dir = File.expand_path(__FILE__).sub(/#{File.extname(__FILE__)}$/, '')
-
 # call setup script
-require File.join(dir, 'setup.rb')
+require 'tkextlib/ICONS/setup.rb'
 
 # load library
-require File.join(dir, 'icons')
+require 'tkextlib/ICONS/icons'
diff --git a/ext/tk/lib/tkextlib/ICONS/icons.rb b/ext/tk/lib/tkextlib/ICONS/icons.rb
index fe8351fa52..275903f302 100644
--- a/ext/tk/lib/tkextlib/ICONS/icons.rb
+++ b/ext/tk/lib/tkextlib/ICONS/icons.rb
@@ -9,39 +9,63 @@ require 'tk'
 require 'tkextlib/setup.rb'
 
 # call setup script
-require File.join(File.dirname(File.expand_path(__FILE__)), 'setup.rb')
+require 'tkextlib/ICONS/setup.rb'
 
 # TkPackage.require('icons', '1.0')
 TkPackage.require('icons')
 
 module Tk
   class ICONS < TkImage
-    def self.create(*args)  # icon, icon, ..., keys
+    extend Tk
+
+    def self.package_version
+      begin
+	TkPackage.require('icons')
+      rescue
+	''
+      end
+    end
+
+    def self.create(*args)  # icon, icon, ..., ?option=>value, ...?
       if args[-1].kind_of?(Hash)
 	keys = args.pop
 	icons = simplelist(tk_call('::icons::icons', 'create', 
-				   *(hash_kv(keys).concat(args.flatten))))
+				   *(hash_kv(keys) << (args.flatten))))
       else
 	icons = simplelist(tk_call('::icons::icons', 'create', 
-				   *(args.flatten)))
+				   args.flatten))
       end
 
       icons.collect{|icon| self.new(icon, :without_creating=>true)}
     end
 
-    def self.delete(*icons)
+    def self.delete(*icons)  # icon, icon, ...
+      icons = icons.flatten
       return if icons.empty?
+      icons.map!{|icon|
+	if icon.kind_of?(Tk::ICONS)
+	  Tk_IMGTBL.delete(icon.path)
+	  icon.name
+	elsif icon.to_s =~ /^::icon::(.*)/
+	  name = $1
+	  Tk_IMGTBL.delete(icon)
+	  name
+	else
+	  Tk_IMGTBL.delete("::icon::#{icon}")
+	  icon
+	end
+      }
       tk_call('::icons::icons', 'delete', icons)
     end
 
-    def self.query(*args)
+    def self.query(*args)  # icon, icon, ..., ?option=>value, ...?
       if args[-1].kind_of?(Hash)
 	keys = args.pop
-	list(tk_call('::icons::icons', 'query', 
-		     *(hash_kv(keys).concat(args.flatten))))
+	simplelist(tk_call('::icons::icons', 'query', 
+			   *(hash_kv(keys) << (args.flatten))))
       else
-	list(tk_call('::icons::icons', 'query', *(args.flatten)))
-      end
+	simplelist(tk_call('::icons::icons', 'query', args.flatten))
+      end . map{|inf| list(inf) }
     end
 
     ##########################################
@@ -75,7 +99,7 @@ module Tk
       self
     end
 
-    def query(keys)
+    def query(keys={})
       list(simplelist(tk_call('::icons::icons', 'query', 
 			       *(hash_kv(keys) << @name))
 		      )[0])
diff --git a/ext/tk/lib/tkextlib/SUPPORT_STATUS b/ext/tk/lib/tkextlib/SUPPORT_STATUS
index 6cc5e15617..58ac307857 100644
--- a/ext/tk/lib/tkextlib/SUPPORT_STATUS
+++ b/ext/tk/lib/tkextlib/SUPPORT_STATUS
@@ -47,33 +47,35 @@ script may give you some hints about that.
 ===< support with some examples (may be beta quality) >=======================
 
 Tcllib      http://sf.net/projects/tcllib
-              ==>  tcllib  (partial support; Tklib part only)
+              ==> tcllib  (partial support; Tklib part only)
+
+BWidgets    http://sf.net/projects/tcllib               ==> bwidget
 
 vu          http://tktable.sourceforge.net              ==> vu
 
-TkHTML      http://www.hwaci.com/sw/tkhtml/index.html   ==>  tkHTML
+TkHTML      http://www.hwaci.com/sw/tkhtml/index.html   ==> tkHTML
+
+ICONS       http://www.satisoft.com/tcltk/icons/        ==> ICONS
 
 
 
 ===< support (may be alpha or beta quality) >=================================
 
-TkImg       http://sf.net/projects/tkimg   ==>  tkimg
+TkImg       http://sf.net/projects/tkimg                ==>  tkimg
 
-TkTreeCtrl  http://tktreectrl.sourceforge.net/          ==>  treectrl
+TkTreeCtrl  http://tktreectrl.sourceforge.net/          ==> treectrl
 
-Tile        http://tktable.sourceforge.net/tile/        ==>  tile
+Tile        http://tktable.sourceforge.net/tile/        ==> tile
 
 
 
-===< possibly support (not tested; alpha quality) >===========================
+===< possibly available (not tested; alpha quality) >=========================
 
 TkTrans     http://www2.cmp.uea.ac.uk/~fuzz/tktrans/default.html
                ==>  tktrans (win32 only)
 
 TkDND       http://sourceforge.net/projects/tkdnd  ==> tkDND
 
-ICONS       http://www.satisoft.com/tcltk/icons/   ==> ICONS
-
 
 
 ===< plan to support (alpha quality libraries may be included) >==============
@@ -87,8 +89,6 @@ IWidgets    http://sf.net/projects/incrTcl
 TkTable     http://sf.net/projects/tktable
                 * see http://www.korus.hu/~fery/ruby/tktable.rb
 
-BWidgets    http://sf.net/projects/tcllib
-
 winico      http://tktable.sourceforge.net
 
 
diff --git a/ext/tk/lib/tkextlib/bwidget.rb b/ext/tk/lib/tkextlib/bwidget.rb
new file mode 100644
index 0000000000..78d7d5230f
--- /dev/null
+++ b/ext/tk/lib/tkextlib/bwidget.rb
@@ -0,0 +1,144 @@
+#
+#  BWidget extension support
+#                               by Hidetoshi NAGAI (nagai@ai.kyutech.ac.jp)
+#
+
+require 'tk'
+
+# call setup script for general 'tkextlib' libraries
+require 'tkextlib/setup.rb'
+
+# call setup script
+require 'tkextlib/bwidget/setup.rb'
+
+# load all image format handlers
+#TkPackage.require('BWidget', '1.7')
+TkPackage.require('BWidget')
+
+module Tk
+  module BWidget
+    extend TkCore
+
+    LIBRARY = tk_call('set', '::BWIDGET::LIBRARY')
+
+    def self.package_version
+      begin
+	TkPackage.require('BWidget')
+      rescue
+	''
+      end
+    end
+
+    def self.XLFDfont(cmd, *args)
+      if args[-1].kind_of?(Hash)
+	keys = args.pop
+	args.concat(hash_kv(keys))
+      end
+      tk_call('BWidget::XLFDfont', cmd, *args)
+    end
+
+    def self.assert(exp, msg=None)
+      tk_call('BWidget::assert', exp, msg)
+    end
+
+    def self.badOptionString(type, value, list)
+      tk_call('BWidget::badOptionString', type, value, list)
+    end
+
+    def self.bindMouseWheel(widget)
+      tk_call('BWidget::bindMouseWheel', widget)
+    end
+
+    def self.classes(klass)
+      list(tk_call('BWidget::classes', klass))
+    end
+
+    def self.clonename(menu)
+      tk_call('BWidget::clonename', menu)
+    end
+
+    def self.focus(opt, path)
+      tk_call('BWidget::focus', opt, path)
+    end
+
+    def self.get3dcolor(path, bgcolor)
+      tk_call('BWidget::get3dcolor', path, bgcolor)
+    end
+
+    def self.getname(name)
+      tk_call('BWidget::getname', name)
+    end
+
+    def self.grab(opt, path)
+      tk_call('BWidget::', opt, path)
+    end
+
+    def self.inuse(klass)
+      bool(tk_call('BWidget::inuse', klass))
+    end
+
+    def self.library(klass, *klasses)
+      tk_call('BWidget::library', klass, *klasses)
+    end
+
+    def self.lreorder(list, neworder)
+      tk_call('BWidget::lreorder', list, neworder)
+    end
+
+    def self.parsetext(text)
+      tk_call('BWidget::parsetext', text)
+    end
+
+    def self.place(path, w, h, *args)
+      if args[-1].kind_of?(Hash)
+	keys = args.pop
+	args.concat(hash_kv(keys))
+      end
+      tk_call('BWidget::place', path, w, h, *(args.flatten))
+    end
+
+    def self.write(file, mode=None)
+      tk_call('BWidget::write', file, mode)
+    end
+
+    def self.wrongNumArgsString(str)
+      tk_call('BWidget::wrongNumArgsString', str)
+    end
+
+    ####################################################
+
+    autoload :ArrowButton,     'tkextlib/bwidget/arrowbutton'
+    autoload :Bitmap,          'tkextlib/bwidget/bitmap'
+    autoload :Button,          'tkextlib/bwidget/button'
+    autoload :ButtonBox,       'tkextlib/bwidget/buttonbox'
+    autoload :ComboBox,        'tkextlib/bwidget/combobox'
+    autoload :Dialog,          'tkextlib/bwidget/dialog'
+    autoload :DragSite,        'tkextlib/bwidget/dragsite'
+    autoload :DropSite,        'tkextlib/bwidget/dropsite'
+    autoload :DynamicHelp,     'tkextlib/bwidget/dynamichelp'
+    autoload :Entry,           'tkextlib/bwidget/entry'
+    autoload :Label,           'tkextlib/bwidget/label'
+    autoload :LabelEntry,      'tkextlib/bwidget/labelentry'
+    autoload :LabelFrame,      'tkextlib/bwidget/labelframe'
+    autoload :ListBox,         'tkextlib/bwidget/listbox'
+    autoload :MainFrame,       'tkextlib/bwidget/mainframe'
+    autoload :MessageDlg,      'tkextlib/bwidget/messagedlg'
+    autoload :NoteBook,        'tkextlib/bwidget/notebook'
+    autoload :PagesManager,    'tkextlib/bwidget/pagesmanager'
+    autoload :PanedWindow,     'tkextlib/bwidget/panedwindow'
+    autoload :PasswdDlg,       'tkextlib/bwidget/passwddlg'
+    autoload :ProgressBar,     'tkextlib/bwidget/progressbar'
+    autoload :ProgressDlg,     'tkextlib/bwidget/progressdlg'
+    autoload :ScrollableFrame, 'tkextlib/bwidget/scrollableframe'
+    autoload :ScrolledWindow,  'tkextlib/bwidget/scrolledwindow'
+    autoload :ScrollView,      'tkextlib/bwidget/scrollview'
+    autoload :SelectColor,     'tkextlib/bwidget/selectcolor'
+    autoload :SelectFont,      'tkextlib/bwidget/selectfont'
+    autoload :Separator,       'tkextlib/bwidget/separator'
+    autoload :SpinBox,         'tkextlib/bwidget/spinbox'
+    autoload :TitleFrame,      'tkextlib/bwidget/titleframe'
+    autoload :Tree,            'tkextlib/bwidget/tree'
+    autoload :Widget,          'tkextlib/bwidget/widget'
+
+  end
+end
diff --git a/ext/tk/lib/tkextlib/bwidget/arrowbutton.rb b/ext/tk/lib/tkextlib/bwidget/arrowbutton.rb
new file mode 100644
index 0000000000..770e5e9ef1
--- /dev/null
+++ b/ext/tk/lib/tkextlib/bwidget/arrowbutton.rb
@@ -0,0 +1,21 @@
+#
+#  tkextlib/bwidget/arrowbutton.rb
+#                               by Hidetoshi NAGAI (nagai@ai.kyutech.ac.jp)
+#
+
+require 'tk'
+require 'tkextlib/bwidget.rb'
+require 'tkextlib/bwidget/button'
+
+module Tk
+  module BWidget
+    class ArrowButton < Tk::BWidget::Button
+    end
+  end
+end
+
+class Tk::BWidget::ArrowButton
+  TkCommandNames = ['ArrowButton'.freeze].freeze
+  WidgetClassName = 'ArrowButton'.freeze
+  WidgetClassNames[WidgetClassName] = self
+end
diff --git a/ext/tk/lib/tkextlib/bwidget/bitmap.rb b/ext/tk/lib/tkextlib/bwidget/bitmap.rb
new file mode 100644
index 0000000000..6cfde203e8
--- /dev/null
+++ b/ext/tk/lib/tkextlib/bwidget/bitmap.rb
@@ -0,0 +1,21 @@
+#
+#  tkextlib/bwidget/bitmap.rb
+#                               by Hidetoshi NAGAI (nagai@ai.kyutech.ac.jp)
+#
+require 'tk'
+require 'tk/image'
+require 'tkextlib/bwidget.rb'
+
+module Tk
+  module BWidget
+    class Bitmap < TkPhotoImage
+    end
+  end
+end
+
+class Tk::BWidget::Bitmap
+  def initialize(name)
+    @path = tk_call_without_enc('Bitmap::get', name)
+    Tk_IMGTBL[@path] = self
+  end
+end
diff --git a/ext/tk/lib/tkextlib/bwidget/button.rb b/ext/tk/lib/tkextlib/bwidget/button.rb
new file mode 100644
index 0000000000..246afebe29
--- /dev/null
+++ b/ext/tk/lib/tkextlib/bwidget/button.rb
@@ -0,0 +1,21 @@
+#
+#  tkextlib/bwidget/button.rb
+#                               by Hidetoshi NAGAI (nagai@ai.kyutech.ac.jp)
+#
+
+require 'tk'
+require 'tk/button'
+require 'tkextlib/bwidget.rb'
+
+module Tk
+  module BWidget
+    class Button < TkButton
+    end
+  end
+end
+
+class Tk::BWidget::Button
+  TkCommandNames = ['Button'.freeze].freeze
+  WidgetClassName = 'Button'.freeze
+  WidgetClassNames[WidgetClassName] = self
+end
diff --git a/ext/tk/lib/tkextlib/bwidget/buttonbox.rb b/ext/tk/lib/tkextlib/bwidget/buttonbox.rb
new file mode 100644
index 0000000000..477de8a61f
--- /dev/null
+++ b/ext/tk/lib/tkextlib/bwidget/buttonbox.rb
@@ -0,0 +1,73 @@
+#
+#  tkextlib/bwidget/buttonbox.rb
+#                               by Hidetoshi NAGAI (nagai@ai.kyutech.ac.jp)
+#
+
+require 'tk'
+require 'tkextlib/bwidget.rb'
+require 'tkextlib/bwidget/button'
+
+module Tk
+  module BWidget
+    class ButtonBox < TkWindow
+    end
+  end
+end
+
+class Tk::BWidget::ButtonBox
+  TkCommandNames = ['ButtonBox'.freeze].freeze
+  WidgetClassName = 'ButtonBox'.freeze
+  WidgetClassNames[WidgetClassName] = self
+
+  include TkItemConfigMethod
+
+  def tagid(tagOrId)
+    if tagOrId.kind_of?(Tk::BWidget::Button)
+      name = tagOrId[:name]
+      return index(name) unless name.empty?
+    end
+    if tagOrId.kind_of?(TkButton)
+      return index(tagOrId[:text])
+    end
+    # index(tagOrId.to_s)
+    index(_get_eval_string(tagOrId))
+  end
+
+  def add(keys={}, &b)
+    win = window(tk_send('add', *hash_kv(keys)))
+    win.instance_eval(&b) if b
+    win
+  end
+
+  def delete(idx)
+    tk_send('delete', tagid(idx))
+    self
+  end
+
+  def index(idx)
+    if idx.kind_of?(Tk::BWidget::Button)
+      name = idx[:name]
+      idx = name unless name.empty?
+    end
+    if idx.kind_of?(TkButton)
+      idx = idx[:text]
+    end
+    number(tk_send('index', idx.to_s))
+  end
+
+  def insert(idx, keys={}, &b)
+    win = window(tk_send('insert', tagid(idx), *hash_kv(keys)))
+    win.instance_eval(&b) if b
+    win
+  end
+
+  def invoke(idx)
+    tk_send('invoke', tagid(idx))
+    self
+  end
+
+  def set_focus(idx)
+    tk_send('setfocus', tagid(idx))
+    self
+  end
+end
diff --git a/ext/tk/lib/tkextlib/bwidget/combobox.rb b/ext/tk/lib/tkextlib/bwidget/combobox.rb
new file mode 100644
index 0000000000..31f71c3aaf
--- /dev/null
+++ b/ext/tk/lib/tkextlib/bwidget/combobox.rb
@@ -0,0 +1,45 @@
+#
+#  tkextlib/bwidget/combobox.rb
+#                               by Hidetoshi NAGAI (nagai@ai.kyutech.ac.jp)
+#
+
+require 'tk'
+require 'tk/entry'
+require 'tkextlib/bwidget.rb'
+require 'tkextlib/bwidget/listbox'
+require 'tkextlib/bwidget/spinbox'
+
+module Tk
+  module BWidget
+    class ComboBox < Tk::BWidget::SpinBox
+    end
+  end
+end
+
+class Tk::BWidget::ComboBox
+  include Scrollable
+
+  TkCommandNames = ['ComboBox'.freeze].freeze
+  WidgetClassName = 'ComboBox'.freeze
+  WidgetClassNames[WidgetClassName] = self
+
+  def get_listbox(&b)
+    win = window(tk_send_without_enc('getlistbox'))
+    win.instance_eval(&b) if b
+    win
+  end
+
+  def icursor(idx)
+    tk_send_without_enc('icursor', idx)
+  end
+
+  def post
+    tk_send_without_enc('post')
+    self
+  end
+
+  def unpost
+    tk_send_without_enc('unpost')
+    self
+  end
+end
diff --git a/ext/tk/lib/tkextlib/bwidget/dialog.rb b/ext/tk/lib/tkextlib/bwidget/dialog.rb
new file mode 100644
index 0000000000..4a60a7ceb4
--- /dev/null
+++ b/ext/tk/lib/tkextlib/bwidget/dialog.rb
@@ -0,0 +1,147 @@
+#
+#  tkextlib/bwidget/dialog.rb
+#                               by Hidetoshi NAGAI (nagai@ai.kyutech.ac.jp)
+#
+
+require 'tk'
+require 'tk/frame'
+require 'tkextlib/bwidget.rb'
+require 'tkextlib/bwidget/buttonbox'
+
+module Tk
+  module BWidget
+    class Dialog < TkWindow
+    end
+  end
+end
+
+class Tk::BWidget::Dialog
+  TkCommandNames = ['Dialog'.freeze].freeze
+  WidgetClassName = 'Dialog'.freeze
+  WidgetClassNames[WidgetClassName] = self
+
+  include TkItemConfigMethod
+
+  def initialize(parent=nil, keys=nil)
+    @relative = ''
+    if parent.kind_of?(Hash)
+      keys = _symbolkey2str(parent)
+      @relative = keys['parent'] if keys.key?('parent')
+      @relative = keys.delete('relative') if keys.key?('relative')
+      super(keys)
+    elsif keys
+      keys = _symbolkey2str(keys)
+      @relative = keys.delete('parent') if keys.key?('parent')
+      @relative = keys.delete('relative') if keys.key?('relative')
+      super(parent, keys)
+    else
+      super(parent)
+    end
+  end
+
+  def create_self(keys)
+    cmd = self.class::TkCommandNames[0]
+    if keys and keys != None
+      tk_call_without_enc(cmd, @path, '-parent', @relative, 
+			  *hash_kv(keys, true))
+    else
+      tk_call_without_enc(cmd, @path, '-parent', @relative)
+    end
+  end
+
+  def cget(slot)
+    if slot.to_s == 'relative'
+      super('parent')
+    else
+      super(slot)
+    end
+  end
+
+  def configure(slot, value=None)
+    if slot.kind_of?(Hash)
+      slot = _symbolkey2str(slot)
+      slot['parent'] = slot.delete('relative') if slot.key?('relative')
+      super(slot)
+    else
+      if slot.to_s == 'relative'
+	super('parent', value)
+      else
+	super(slot, value)
+      end
+    end
+  end
+
+  def configinfo(slot=nil)
+    if slot
+      if slot.to_s == 'relative'
+	super('parent')
+      else
+	super(slot)
+      end
+    else
+      ret = super()
+      if TkComm::GET_CONFIGINFO_AS_ARRAY
+	ret << ['relative', 'parent']
+      else
+	ret['relative'] = 'parent'
+      end
+    end
+  end
+
+  def tagid(tagOrId)
+    if tagOrId.kind_of?(Tk::BWidget::Button)
+      name = tagOrId[:name]
+      return index(name) unless name.empty?
+    end
+    if tagOrId.kind_of?(TkButton)
+      return index(tagOrId[:text])
+    end
+    # index(tagOrId.to_s)
+    index(_get_eval_string(tagOrId))
+  end
+
+  def add(keys={}, &b)
+    win = window(tk_send('add', *hash_kv(keys)))
+    win.instance_eval(&b) if b
+    win
+  end
+
+  def get_frame(&b)
+    win = window(tk_send('getframe'))
+    win.instance_eval(&b) if b
+    win
+  end
+
+  def get_buttonbox(&b)
+    win = window(@path + '.bbox')
+    win.instance_eval(&b) if b
+    win
+  end
+
+  def draw(focus_win=None)
+    tk_send('draw', focus_win)
+  end
+
+  def enddialog(ret)
+    tk_send('enddialog', ret)
+  end
+
+  def index(idx)
+    get_buttonbox.index(idx)
+  end
+
+  def invoke(idx)
+    tk_send('invoke', tagid(idx))
+    self
+  end
+
+  def set_focus(idx)
+    tk_send('setfocus', tagid(idx))
+    self
+  end
+
+  def withdraw
+    tk_send('withdraw')
+    self
+  end
+end
diff --git a/ext/tk/lib/tkextlib/bwidget/dragsite.rb b/ext/tk/lib/tkextlib/bwidget/dragsite.rb
new file mode 100644
index 0000000000..4d4de1780c
--- /dev/null
+++ b/ext/tk/lib/tkextlib/bwidget/dragsite.rb
@@ -0,0 +1,31 @@
+#
+#  tkextlib/bwidget/dragsite.rb
+#                               by Hidetoshi NAGAI (nagai@ai.kyutech.ac.jp)
+#
+
+require 'tk'
+require 'tkextlib/bwidget.rb'
+
+module Tk
+  module BWidget
+    module DragSite
+    end
+  end
+end
+
+module Tk::BWidget::DragSite
+  include Tk
+  extend Tk
+
+  def self.include(klass, type, event)
+    tk_call('DragSite::include', klass, type, event)
+  end
+
+  def self.register(path, keys={})
+    tk_call('DragSite::register', path, *hash_kv(keys))
+  end
+
+  def self.set_drag(path, subpath, initcmd, endcmd, force=None)
+    tk_call('DragSite::setdrag', path, subpath, initcmd, endcmd, force)
+  end
+end
diff --git a/ext/tk/lib/tkextlib/bwidget/dropsite.rb b/ext/tk/lib/tkextlib/bwidget/dropsite.rb
new file mode 100644
index 0000000000..e5e98fbc51
--- /dev/null
+++ b/ext/tk/lib/tkextlib/bwidget/dropsite.rb
@@ -0,0 +1,39 @@
+#
+#  tkextlib/bwidget/dropsite.rb
+#                               by Hidetoshi NAGAI (nagai@ai.kyutech.ac.jp)
+#
+
+require 'tk'
+require 'tkextlib/bwidget.rb'
+
+module Tk
+  module BWidget
+    module DropSite
+    end
+  end
+end
+
+module Tk::BWidget::DropSite
+  include Tk
+  extend Tk
+
+  def self.include(klass, type)
+    tk_call('DropSite::include', klass, type)
+  end
+
+  def self.register(path, keys={})
+    tk_call('DropSite::register', path, *hash_kv(keys))
+  end
+
+  def self.set_cursor(cursor)
+    tk_call('DropSite::setcursor', cursor)
+  end
+
+  def self.set_drop(path, subpath, dropover, drop, force=None)
+    tk_call('DropSite::setdrop', path, subpath, dropover, drop, force)
+  end
+
+  def self.set_operation(op)
+    tk_call('DropSite::setoperation', op)
+  end
+end
diff --git a/ext/tk/lib/tkextlib/bwidget/dynamichelp.rb b/ext/tk/lib/tkextlib/bwidget/dynamichelp.rb
new file mode 100644
index 0000000000..4766a1ec6d
--- /dev/null
+++ b/ext/tk/lib/tkextlib/bwidget/dynamichelp.rb
@@ -0,0 +1,51 @@
+#
+#  tkextlib/bwidget/dynamichelp.rb
+#                               by Hidetoshi NAGAI (nagai@ai.kyutech.ac.jp)
+#
+
+require 'tk'
+require 'tkextlib/bwidget.rb'
+
+module Tk
+  module BWidget
+    module DynamicHelp
+    end
+  end
+end
+
+module Tk::BWidget::DynamicHelp
+  include Tk
+  extend Tk
+
+  def self.__pathname
+    'DynamicHelp::configure'
+  end
+
+  def self.__cget_cmd
+    ['DynamicHelp::configure']
+  end
+
+  def self.__config_cmd
+    ['DynamicHelp::configure']
+  end
+
+  def self.cget(slot)
+    self.current_configinfo(slot).values[0]
+  end
+
+  def self.add(widget, keys={})
+    tk_call('DynamicHelp::add', widget, *hash_kv(keys))
+  end
+
+  def self.delete(widget)
+    tk_call('DynamicHelp::delete', widget)
+  end
+
+  def self.include(klass, type)
+    tk_call('DynamicHelp::include', klass, type)
+  end
+
+  def self.sethelp(path, subpath, force=None)
+    tk_call('DynamicHelp::sethelp', path, subpath, force)
+  end
+end
diff --git a/ext/tk/lib/tkextlib/bwidget/entry.rb b/ext/tk/lib/tkextlib/bwidget/entry.rb
new file mode 100644
index 0000000000..9867a1ac36
--- /dev/null
+++ b/ext/tk/lib/tkextlib/bwidget/entry.rb
@@ -0,0 +1,28 @@
+#
+#  tkextlib/bwidget/entry.rb
+#                               by Hidetoshi NAGAI (nagai@ai.kyutech.ac.jp)
+#
+
+require 'tk'
+require 'tk/entry'
+require 'tkextlib/bwidget.rb'
+
+module Tk
+  module BWidget
+    class Entry < TkEntry
+    end
+  end
+end
+
+class Tk::BWidget::Entry
+  include Scrollable
+
+  TkCommandNames = ['Entry'.freeze].freeze
+  WidgetClassName = 'Entry'.freeze
+  WidgetClassNames[WidgetClassName] = self
+
+  def invoke
+    tk_send_without_enc('invoke')
+    self
+  end
+end
diff --git a/ext/tk/lib/tkextlib/bwidget/label.rb b/ext/tk/lib/tkextlib/bwidget/label.rb
new file mode 100644
index 0000000000..1d4c638705
--- /dev/null
+++ b/ext/tk/lib/tkextlib/bwidget/label.rb
@@ -0,0 +1,26 @@
+#
+#  tkextlib/bwidget/label.rb
+#                               by Hidetoshi NAGAI (nagai@ai.kyutech.ac.jp)
+#
+
+require 'tk'
+require 'tk/label'
+require 'tkextlib/bwidget.rb'
+
+module Tk
+  module BWidget
+    class Label < TkLabel
+    end
+  end
+end
+
+class Tk::BWidget::Label
+  TkCommandNames = ['Label'.freeze].freeze
+  WidgetClassName = 'Label'.freeze
+  WidgetClassNames[WidgetClassName] = self
+
+  def set_focus
+    tk_send_without_enc('setfocus')
+    self
+  end
+end
diff --git a/ext/tk/lib/tkextlib/bwidget/labelentry.rb b/ext/tk/lib/tkextlib/bwidget/labelentry.rb
new file mode 100644
index 0000000000..7a6a7f01d6
--- /dev/null
+++ b/ext/tk/lib/tkextlib/bwidget/labelentry.rb
@@ -0,0 +1,45 @@
+#
+#  tkextlib/bwidget/labelentry.rb
+#                               by Hidetoshi NAGAI (nagai@ai.kyutech.ac.jp)
+#
+
+require 'tk'
+require 'tk/entry'
+require 'tkextlib/bwidget.rb'
+require 'tkextlib/bwidget/labelframe'
+require 'tkextlib/bwidget/entry'
+
+module Tk
+  module BWidget
+    class LabelEntry < TkEntry
+    end
+  end
+end
+
+class Tk::BWidget::LabelEntry
+  include Scrollable
+
+  TkCommandNames = ['LabelEntry'.freeze].freeze
+  WidgetClassName = 'LabelEntry'.freeze
+  WidgetClassNames[WidgetClassName] = self
+
+  def entrybind(*args)
+    _bind([path, 'bind'], *args)
+    self
+  end
+
+  def entrybind_append(*args)
+    _bind_append([path, 'bind'], *args)
+    self
+  end
+
+  def entrybind_remove(*args)
+    _bind_remove([path, 'bind'], *args)
+    self
+  end
+
+  def entrybindinfo(*args)
+    _bindinfo([path, 'bind'], *args)
+    self
+  end
+end
diff --git a/ext/tk/lib/tkextlib/bwidget/labelframe.rb b/ext/tk/lib/tkextlib/bwidget/labelframe.rb
new file mode 100644
index 0000000000..453756a163
--- /dev/null
+++ b/ext/tk/lib/tkextlib/bwidget/labelframe.rb
@@ -0,0 +1,30 @@
+#
+#  tkextlib/bwidget/labelframe.rb
+#                               by Hidetoshi NAGAI (nagai@ai.kyutech.ac.jp)
+#
+
+require 'tk'
+require 'tk/frame'
+require 'tkextlib/bwidget.rb'
+
+module Tk
+  module BWidget
+    class LabelFrame < TkWindow
+    end
+  end
+end
+
+class Tk::BWidget::LabelFrame
+  TkCommandNames = ['LabelFrame'.freeze].freeze
+  WidgetClassName = 'LabelFrame'.freeze
+  WidgetClassNames[WidgetClassName] = self
+
+  def self.align(*args)
+    tk_call('LabelFrame::align', *args)
+  end
+  def get_frame(&b)
+    win = window(tk_send_without_enc('getframe'))
+    win.instance_eval(&b) if b
+    win
+  end
+end
diff --git a/ext/tk/lib/tkextlib/bwidget/listbox.rb b/ext/tk/lib/tkextlib/bwidget/listbox.rb
new file mode 100644
index 0000000000..28173fb7f9
--- /dev/null
+++ b/ext/tk/lib/tkextlib/bwidget/listbox.rb
@@ -0,0 +1,290 @@
+#
+#  tkextlib/bwidget/listbox.rb
+#                               by Hidetoshi NAGAI (nagai@ai.kyutech.ac.jp)
+#
+
+require 'tk'
+require 'tk/canvas'
+require 'tkextlib/bwidget.rb'
+
+module Tk
+  module BWidget
+    class ListBox < TkWindow
+      # is NOT a subclass of a listbox widget class.
+      # because it constructed on a canvas widget. 
+
+      class Item < TkObject
+      end
+    end
+  end
+end
+
+class Tk::BWidget::ListBox
+  include TkItemConfigMethod
+  include Scrollable
+
+  TkCommandNames = ['ListBox'.freeze].freeze
+  WidgetClassName = 'ListBox'.freeze
+  WidgetClassNames[WidgetClassName] = self
+
+  class Event_for_Items < TkEvent::Event
+    def self._get_extra_args_tbl
+      [ 
+	TkComm.method(:string)   # item idenfier
+      ]
+    end
+  end
+
+  def tagid(tag)
+    if tag.kind_of?(Tk::BWidget::ListBox::Item)
+      tag.id
+    else
+      # tag
+      _get_eval_string(tag)
+    end
+  end
+
+  def imagebind(*args)
+    _bind_for_event_class(Event_for_Items, [path, 'bindImage'], *args)
+    self
+  end
+
+  def imagebind_append(*args)
+    _bind_append_for_event_class(Event_for_Items, [path, 'bindImage'], *args)
+    self
+  end
+
+  def imagebind_remove(*args)
+    _bind_remove_for_event_class(Event_for_Items, [path, 'bindImage'], *args)
+    self
+  end
+
+  def imagebindinfo(*args)
+    _bindinfo_for_event_class(Event_for_Items, [path, 'bindImage'], *args)
+  end
+
+  def textbind(*args)
+    _bind_for_event_class(Event_for_Items, [path, 'bindText'], *args)
+    self
+  end
+
+  def textbind_append(*args)
+    _bind_append_for_event_class(Event_for_Items, [path, 'bindText'], *args)
+    self
+  end
+
+  def textbind_remove(*args)
+    _bind_remove_for_event_class(Event_for_Items, [path, 'bindText'], *args)
+    self
+  end
+
+  def textbindinfo(*args)
+    _bindinfo_for_event_class(Event_for_Items, [path, 'bindText'], *args)
+  end
+
+  def delete(*args)
+    tk_send('delete', *args)
+    self
+  end
+
+  def edit(item, text, *args)
+    tk_send('edit', tagid(item), text, *args)
+    self
+  end
+
+  def exist?(item)
+    bool(tk_send('exists', tagid(item)))
+  end
+
+  def index(item)
+    num_or_str(tk_send('index', tagid(item)))
+  end
+
+  def insert(idx, item, keys={})
+    tk_send('insert', idx, tagid(item), *hash_kv(keys))
+    self
+  end
+
+  def get_item(idx)
+    tk_send('items', idx)
+  end
+
+  def items(first=None, last=None)
+    list(tk_send('items', first, last))
+  end
+
+  def move(item, idx)
+    tk_send('move', tagid(item), idx)
+    self
+  end
+
+  def reorder(neworder)
+    tk_send('reorder', neworder)
+    self
+  end
+
+  def see(item)
+    tk_send('see', tagid(item))
+    self
+  end
+
+  def selection_clear
+    tk_send_without_enc('selection', 'clear')
+    self
+  end
+
+  def selection_set(*args)
+    tk_send_without_enc('selection', 'set', 
+			*(args.collect{|item| tagid(item)}))
+    self
+  end
+
+  def selection_add(*args)
+    tk_send_without_enc('selection', 'add', 
+			*(args.collect{|item| tagid(item)}))
+    self
+  end
+
+  def selection_remove(*args)
+    tk_send_without_enc('selection', 'remove', 
+			*(args.collect{|item| tagid(item)}))
+    self
+  end
+
+  def selection_get(*args)
+    simplelist(tk_send_without_enc('selection', 'get')).collect{|item|
+      Tk::BWidget::ListBox::Item.id2obj(self, item)
+    }
+  end
+end
+
+class Tk::BWidget::ListBox::Item
+  include TkTreatTagFont
+
+  ListItem_TBL = TkCore::INTERP.create_table
+  ListItem_ID = ['item:'.freeze, '00000'.taint].freeze
+
+  TkCore::INTERP.init_ip_env{ ListItem_TBL.clear }
+
+  def self.id2obj(lbox, id)
+    lpath = lbox.path
+    return id unless ListItem_TBL[lpath]
+    ListItem_TBL[lpath][id]? ListItem_TBL[lpath][id]: id
+  end
+
+  def initialize(lbox, *args)
+    if lbox.kind_of?(Tk::BWidget::ListBox)
+      @listbox = lbox
+    else
+      fail RuntimeError, 
+	"expect Tk::BWidget::ListBox or Tk::BWidget::ListBox::Item for 1st argument"
+    end
+
+    if args[-1].kind_of?(Hash)
+      keys = _symbolkey2str(args.pop)
+    else
+      keys = {}
+    end
+
+    index = keys.delete('index')
+    unless args.empty?
+      index = args.shift
+    end
+    index = 'end' unless index
+
+    unless args.empty?
+      fail RuntimeError, 'too much arguments'
+    end
+
+    @lpath = @listbox.path
+
+    if keys.key?('itemname')
+      @path = @id = keys.delete('itemname')
+    else
+      @path = @id = ListItem_ID.join(TkCore::INTERP._ip_id_)
+      ListItem_ID[1].succ!
+    end
+
+    ListItem_TBL[@id] = self
+    ListItem_TBL[@lpath] = {} unless ListItem_TBL[@lpath]
+    ListItem_TBL[@lpath][@id] = self
+
+    @listbox.insert(index, @id, keys)
+  end
+
+  def listbox
+    @listbox
+  end
+
+  def id
+    @id
+  end
+
+  def [](key)
+    cget(key)
+  end
+
+  def []=(key, val)
+    configure(key, val)
+    val
+  end
+
+  def cget(key)
+    @listbox.itemcget(@id, key)
+  end
+
+  def configure(key, val=None)
+    @listbox.itemconfigure(@id, key, val)
+  end
+
+  def configinfo(key=nil)
+    @listbox.itemconfiginfo(@id, key)
+  end
+
+  def current_configinfo(key=nil)
+    @listbox.current_itemconfiginfo(@id, key)
+  end
+
+  def delete
+    @listbox.delete(@id)
+    self
+  end
+
+  def edit(*args)
+    @listbox.edit(@id, *args)
+    self
+  end
+
+  def exist?
+    @listbox.exist?(@id)
+  end
+
+  def index
+    @listbox.index(@id)
+  end
+
+  def move(index)
+    @listbox.move(@id, index)
+  end
+
+  def see
+    @listbox.see(@id)
+  end
+
+  def selection_add
+    @listbox.selection_add(@id)
+  end
+
+  def selection_remove
+    @listbox.selection_remove(@id)
+  end
+
+  def selection_set
+    @listbox.selection_set(@id)
+  end
+
+  def selection_toggle
+    @listbox.selection_toggle(@id)
+  end
+end
+
diff --git a/ext/tk/lib/tkextlib/bwidget/mainframe.rb b/ext/tk/lib/tkextlib/bwidget/mainframe.rb
new file mode 100644
index 0000000000..e52f4b2f4c
--- /dev/null
+++ b/ext/tk/lib/tkextlib/bwidget/mainframe.rb
@@ -0,0 +1,73 @@
+#
+#  tkextlib/bwidget/mainframe.rb
+#                               by Hidetoshi NAGAI (nagai@ai.kyutech.ac.jp)
+#
+
+require 'tk'
+require 'tk/frame'
+require 'tkextlib/bwidget.rb'
+require 'tkextlib/bwidget/progressbar'
+
+module Tk
+  module BWidget
+    class MainFrame < TkWindow
+    end
+  end
+end
+
+class Tk::BWidget::MainFrame
+  TkCommandNames = ['MainFrame'.freeze].freeze
+  WidgetClassName = 'MainFrame'.freeze
+  WidgetClassNames[WidgetClassName] = self
+
+  def add_indicator(keys={}, &b)
+    win = window(tk_send('addindicator', *hash_kv(keys)))
+    win.instance_eval(&b) if b
+    win
+  end
+
+  def add_toolbar(&b)
+    win = window(tk_send('addtoolbar'))
+    win.instance_eval(&b) if b
+    win
+  end
+
+  def get_frame(&b)
+    win = window(tk_send('getframe'))
+    win.instance_eval(&b) if b
+    win
+  end
+
+  def get_indicator(idx, &b)
+    win = window(tk_send('getindicator', idx))
+    win.instance_eval(&b) if b
+    win
+  end
+
+  def get_menu(menu_id, &b)
+    win = window(tk_send('getmenu', menu_id))
+    win.instance_eval(&b) if b
+    win
+  end
+
+  def get_toolbar(idx, &b)
+    win = window(tk_send('gettoolbar', idx))
+    win.instance_eval(&b) if b
+    win
+  end
+
+  def set_menustate(tag, state)
+    tk_send('setmenustate', tag, state)
+    self
+  end
+
+  def show_statusbar(name)
+    tk_send('showstatusbar', name)
+    self
+  end
+
+  def show_toolbar(idx, mode)
+    tk_send('showtoolbar', idx, mode)
+    self
+  end
+end
diff --git a/ext/tk/lib/tkextlib/bwidget/messagedlg.rb b/ext/tk/lib/tkextlib/bwidget/messagedlg.rb
new file mode 100644
index 0000000000..55cc4ba0de
--- /dev/null
+++ b/ext/tk/lib/tkextlib/bwidget/messagedlg.rb
@@ -0,0 +1,167 @@
+#
+#  tkextlib/bwidget/messagedlg.rb
+#                               by Hidetoshi NAGAI (nagai@ai.kyutech.ac.jp)
+#
+
+require 'tk'
+require 'tkextlib/bwidget.rb'
+
+module Tk
+  module BWidget
+    class MessageDlg < TkWindow
+    end
+  end
+end
+
+class Tk::BWidget::MessageDlg
+  TkCommandNames = ['MessageDlg'.freeze].freeze
+  WidgetClassName = 'MessageDlg'.freeze
+  WidgetClassNames[WidgetClassName] = self
+
+  def initialize(parent=nil, keys=nil)
+    @relative = ''
+    if parent.kind_of?(Hash)
+      keys = _symbolkey2str(parent)
+      @relative = keys['parent'] if keys.key?('parent')
+      @relative = keys.delete('relative') if keys.key?('relative')
+      super(keys)
+    elsif keys
+      keys = _symbolkey2str(keys)
+      @relative = keys.delete('parent') if keys.key?('parent')
+      @relative = keys.delete('relative') if keys.key?('relative')
+      super(parent, keys)
+    else
+      super(parent)
+    end
+  end
+
+  def create_self(keys)
+    # NOT create widget.
+    # Because the widget no longer exist when returning from creation.
+    @keys = _symbolkey2str(keys).update('parent'=>@relative)
+    @info = nil
+  end
+  private :create_self
+
+  def cget(slot)
+    slot = slot.to_s
+    if slot == 'relative'
+      slot = 'parent'
+    end
+    if winfo_exist?
+      val = super(slot)
+      @keys[slot] = val
+    end
+    @keys[slot]
+  end
+
+  def configure(slot, value=None)
+    if winfo_exist?
+      super(slot, value)
+    end
+    if slot.kind_of?(Hash)
+      slot = _symbolkey2str(slot)
+      slot['parent'] = slot.delete('relative') if slot.key?('relative')
+      @keys.update(slot)
+
+      if @info
+	# update @info
+	slot.each{|k, v|
+	  if TkComm::GET_CONFIGINFO_AS_ARRAY
+	    if (inf = @info.assoc(k))
+	      inf[-1] = v
+	    else
+	      @info << [k, '', '', '', v]
+	    end
+	  else
+	    if (inf = @info[k])
+	      inf[-1] = v
+	    else
+	      @info[k] = ['', '', '', v]
+	    end
+	  end
+	}
+      end
+
+    else # ! Hash
+      slot = slot.to_s
+      slot = 'parent' if slot == 'relative'
+      @keys[slot] = value
+
+      if @info
+	# update @info
+	if TkComm::GET_CONFIGINFO_AS_ARRAY
+	  if (inf = @info.assoc(slot))
+	    inf[-1] = value
+	  else
+	    @info << [slot, '', '', '', value]
+	  end
+	else
+	  if (inf = @info[slot])
+	    inf[-1] = value
+	  else
+	    @info[slot] = ['', '', '', value]
+	  end
+	end
+      end
+    end
+
+    self
+  end
+
+  def configinfo(slot=nil)
+    if winfo_exist?
+      @info = super()
+      if TkComm::GET_CONFIGINFO_AS_ARRAY
+	@info << ['relative', 'parent']
+      else
+	@info['relative'] = 'parent'
+      end
+    end
+
+    if TkComm::GET_CONFIGINFO_AS_ARRAY
+      if @info
+	if winfo_exist?
+	  # update @keys
+	  @info.each{|inf| @keys[inf[0]] = inf[-1] if inf.size > 2 }
+	end
+      else
+	@info = []
+	@keys.each{|k, v|
+	  @info << [k, '', '', '', v]
+	}
+	@info << ['relative', 'parent']
+      end
+
+      if slot
+	@info.asoc(slot.to_s).dup
+      else
+	@info.dup
+      end
+
+    else # ! TkComm::GET_CONFIGINFO_AS_ARRAY
+      if @info
+	if winfo_exist?
+	  # update @keys
+	  @info.each{|k, inf| @keys[k] = inf[-1] if inf.size > 2 }
+	end
+      else
+	@info = {}
+	@keys.each{|k, v|
+	  @info[k] = ['', '', '', v]
+	}
+	@info['relative'] = 'parent'
+      end
+
+      if slot
+	@info[slot.to_s].dup
+      else
+	@info.dup
+      end
+    end
+  end
+
+  def create
+    num_or_str(tk_call(self.class::TkCommandNames[0], @path, *hash_kv(@keys)))
+  end
+end
diff --git a/ext/tk/lib/tkextlib/bwidget/notebook.rb b/ext/tk/lib/tkextlib/bwidget/notebook.rb
new file mode 100644
index 0000000000..26c11ac0dd
--- /dev/null
+++ b/ext/tk/lib/tkextlib/bwidget/notebook.rb
@@ -0,0 +1,116 @@
+#
+#  tkextlib/bwidget/notebook.rb
+#                               by Hidetoshi NAGAI (nagai@ai.kyutech.ac.jp)
+#
+
+require 'tk'
+require 'tk/frame'
+require 'tkextlib/bwidget.rb'
+
+module Tk
+  module BWidget
+    class NoteBook < TkWindow
+    end
+  end
+end
+
+class Tk::BWidget::NoteBook
+  include TkItemConfigMethod
+
+  TkCommandNames = ['NoteBook'.freeze].freeze
+  WidgetClassName = 'NoteBook'.freeze
+  WidgetClassNames[WidgetClassName] = self
+
+  class Event_for_Tabs < TkEvent::Event
+    def self._get_extra_args_tbl
+      [ 
+	TkComm.method(:string)   # page idenfier
+      ]
+    end
+  end
+
+  def tagid(id)
+    if id.kind_of?(TkWindow)
+      id.path
+    elsif id.kind_of?(TkObject)
+      id.to_eval
+    else
+      # id.to_s
+      _get_eval_string(id)
+    end
+  end
+
+  def tabbind(*args)
+    _bind_for_event_class(Event_for_Tabs, [path, 'bindtabs'], *args)
+    self
+  end
+
+  def tabbind_append(*args)
+    _bind_append_for_event_class(Event_for_Tabs, [path, 'bindtabs'], *args)
+    self
+  end
+
+  def tabbind_remove(*args)
+    _bind_remove_for_event_class(Event_for_Tabs, [path, 'bindtabs'], *args)
+    self
+  end
+
+  def tabbindinfo(*args)
+    _bindinfo_for_event_class(Event_for_Tabs, [path, 'bindtabs'], *args)
+  end
+
+  def add(page, &b)
+    win = window(tk_send('add', tagid(page)))
+    win.instance_eval(&b) if b
+    win
+  end
+
+  def compute_size
+    tk_send('compute_size')
+    self
+  end
+
+  def delete(page, destroyframe=None)
+    tk_send('delete', tagid(page), destroyframe)
+    self
+  end
+
+  def get_frame(page, &b)
+    win = window(tk_send('getframe', tagid(page)))
+    win.instance_eval(&b) if b
+    win
+  end
+
+  def index(page)
+    num_or_str(tk_send('index', tagid(page)))
+  end
+
+  def insert(index, page, keys={}, &b)
+    win = window(tk_send('insert', index, tagid(page), *hash_kv(keys)))
+    win.instance_eval(&b) if b
+    win
+  end
+
+  def move(page, index)
+    tk_send('move', tagid(page), index)
+    self
+  end
+
+  def get_page(page)
+    tk_send('pages', page)
+  end
+
+  def pages(first=None, last=None)
+    list(tk_send('pages', first, last))
+  end
+
+  def raise(page=None)
+    tk_send('raise', page)
+    self
+  end
+
+  def see(page)
+    tk_send('see', page)
+    self
+  end
+end
diff --git a/ext/tk/lib/tkextlib/bwidget/pagesmanager.rb b/ext/tk/lib/tkextlib/bwidget/pagesmanager.rb
new file mode 100644
index 0000000000..fc01284be6
--- /dev/null
+++ b/ext/tk/lib/tkextlib/bwidget/pagesmanager.rb
@@ -0,0 +1,61 @@
+#
+#  tkextlib/bwidget/pagesmanager.rb
+#                               by Hidetoshi NAGAI (nagai@ai.kyutech.ac.jp)
+#
+
+require 'tk'
+require 'tk/frame'
+require 'tkextlib/bwidget.rb'
+
+module Tk
+  module BWidget
+    class PagesManager < TkWindow
+    end
+  end
+end
+
+class Tk::BWidget::PagesManager
+  TkCommandNames = ['PagesManager'.freeze].freeze
+  WidgetClassName = 'PagesManager'.freeze
+  WidgetClassNames[WidgetClassName] = self
+
+  def tagid(id)
+    # id.to_s
+    _get_eval_string(id)
+  end
+
+  def add(page, &b)
+    win = window(tk_send('add', tagid(page)))
+    win.instance_eval(&b) if b
+    win
+  end
+
+  def compute_size
+    tk_send('compute_size')
+    self
+  end
+
+  def delete(page)
+    tk_send('delete', tagid(page))
+    self
+  end
+
+  def get_frame(page, &b)
+    win = window(tk_send('getframe', tagid(page)))
+    win.instance_eval(&b) if b
+    win
+  end
+
+  def get_page(page)
+    tk_send('pages', page)
+  end
+
+  def pages(first=None, last=None)
+    list(tk_send('pages', first, last))
+  end
+
+  def raise(page=None)
+    tk_send('raise', page)
+    self
+  end
+end
diff --git a/ext/tk/lib/tkextlib/bwidget/panedwindow.rb b/ext/tk/lib/tkextlib/bwidget/panedwindow.rb
new file mode 100644
index 0000000000..19982c6095
--- /dev/null
+++ b/ext/tk/lib/tkextlib/bwidget/panedwindow.rb
@@ -0,0 +1,31 @@
+#
+#  tkextlib/bwidget/panedwindow.rb
+#                               by Hidetoshi NAGAI (nagai@ai.kyutech.ac.jp)
+#
+
+require 'tk'
+require 'tk/frame'
+require 'tkextlib/bwidget.rb'
+
+module Tk
+  module BWidget
+    class PanedWindow < TkWindow
+    end
+  end
+end
+
+class Tk::BWidget::PanedWindow
+  TkCommandNames = ['PanedWindow'.freeze].freeze
+  WidgetClassName = 'PanedWindow'.freeze
+  WidgetClassNames[WidgetClassName] = self
+
+  def add(keys={})
+    window(tk_send('add', *hash_kv(keys)))
+  end
+
+  def get_frame(idx, &b)
+    win = window(tk_send_without_enc('getframe', idx))
+    win.instance_eval(&b) if b
+    win
+  end
+end
diff --git a/ext/tk/lib/tkextlib/bwidget/passwddlg.rb b/ext/tk/lib/tkextlib/bwidget/passwddlg.rb
new file mode 100644
index 0000000000..399353367c
--- /dev/null
+++ b/ext/tk/lib/tkextlib/bwidget/passwddlg.rb
@@ -0,0 +1,27 @@
+#
+#  tkextlib/bwidget/passwddlg.rb
+#                               by Hidetoshi NAGAI (nagai@ai.kyutech.ac.jp)
+#
+
+require 'tk'
+require 'tkextlib/bwidget.rb'
+require 'tkextlib/bwidget/messagedlg'
+
+module Tk
+  module BWidget
+    class PasswdDlg < Tk::BWidget::MessageDlg
+    end
+  end
+end
+
+class Tk::BWidget::PasswdDlg
+  TkCommandNames = ['PasswdDlg'.freeze].freeze
+  WidgetClassName = 'PasswdDlg'.freeze
+  WidgetClassNames[WidgetClassName] = self
+
+  def create
+    login, passwd = simplelist(tk_call(self.class::TkCommandNames[0], 
+				       @path, *hash_kv(@keys)))
+    [login, passwd]
+  end
+end
diff --git a/ext/tk/lib/tkextlib/bwidget/progressbar.rb b/ext/tk/lib/tkextlib/bwidget/progressbar.rb
new file mode 100644
index 0000000000..0253ce2ada
--- /dev/null
+++ b/ext/tk/lib/tkextlib/bwidget/progressbar.rb
@@ -0,0 +1,20 @@
+#
+#  tkextlib/bwidget/progressbar.rb
+#                               by Hidetoshi NAGAI (nagai@ai.kyutech.ac.jp)
+#
+
+require 'tk'
+require 'tkextlib/bwidget.rb'
+
+module Tk
+  module BWidget
+    class ProgressBar < TkWindow
+    end
+  end
+end
+
+class Tk::BWidget::ProgressBar
+  TkCommandNames = ['ProgressBar'.freeze].freeze
+  WidgetClassName = 'ProgressBar'.freeze
+  WidgetClassNames[WidgetClassName] = self
+end
diff --git a/ext/tk/lib/tkextlib/bwidget/progressdlg.rb b/ext/tk/lib/tkextlib/bwidget/progressdlg.rb
new file mode 100644
index 0000000000..fbf00f3b00
--- /dev/null
+++ b/ext/tk/lib/tkextlib/bwidget/progressdlg.rb
@@ -0,0 +1,54 @@
+#
+#  tkextlib/bwidget/progressdlg.rb
+#                               by Hidetoshi NAGAI (nagai@ai.kyutech.ac.jp)
+#
+
+require 'tk'
+require 'tk/variable'
+require 'tkextlib/bwidget.rb'
+require 'tkextlib/bwidget/progressbar'
+require 'tkextlib/bwidget/messagedlg'
+
+module Tk
+  module BWidget
+    class ProgressDlg < Tk::BWidget::MessageDlg
+    end
+  end
+end
+
+class Tk::BWidget::ProgressDlg
+  TkCommandNames = ['ProgressDlg'.freeze].freeze
+  WidgetClassName = 'ProgressDlg'.freeze
+  WidgetClassNames[WidgetClassName] = self
+
+  def create_self(keys)
+    # NOT create widget for reusing the object
+    super(keys)
+    @keys['textvariable'] = TkVariable.new unless @keys.key?('textvariable')
+    @keys['variable']     = TkVariable.new unless @keys.key?('variable')
+  end
+
+  def textvariable
+    @keys['textvariable']
+  end
+
+  def text
+    @keys['textvariable'].value
+  end
+
+  def text= (txt)
+    @keys['textvariable'].value = txt
+  end
+
+  def variable
+    @keys['variable']
+  end
+
+  def value
+    @keys['variable'].value
+  end
+
+  def value= (val)
+    @keys['variable'].value = val
+  end
+end
diff --git a/ext/tk/lib/tkextlib/bwidget/scrollableframe.rb b/ext/tk/lib/tkextlib/bwidget/scrollableframe.rb
new file mode 100644
index 0000000000..a3986681a5
--- /dev/null
+++ b/ext/tk/lib/tkextlib/bwidget/scrollableframe.rb
@@ -0,0 +1,34 @@
+#
+#  tkextlib/bwidget/scrollableframe.rb
+#                               by Hidetoshi NAGAI (nagai@ai.kyutech.ac.jp)
+#
+
+require 'tk'
+require 'tk/frame'
+require 'tkextlib/bwidget.rb'
+
+module Tk
+  module BWidget
+    class ScrollableFrame < TkWindow
+    end
+  end
+end
+
+class Tk::BWidget::ScrollableFrame
+  include Scrollable
+
+  TkCommandNames = ['ScrollableFrame'.freeze].freeze
+  WidgetClassName = 'ScrollableFrame'.freeze
+  WidgetClassNames[WidgetClassName] = self
+
+  def get_frame(&b)
+    win = window(tk_send_without_enc('getframe'))
+    win.instance_eval(&b) if b
+    win
+  end
+
+  def see(win, vert=None, horiz=None)
+    tk_send_without_enc('see', win, vert, horiz)
+    self
+  end
+end
diff --git a/ext/tk/lib/tkextlib/bwidget/scrolledwindow.rb b/ext/tk/lib/tkextlib/bwidget/scrolledwindow.rb
new file mode 100644
index 0000000000..e9e53235b7
--- /dev/null
+++ b/ext/tk/lib/tkextlib/bwidget/scrolledwindow.rb
@@ -0,0 +1,32 @@
+#
+#  tkextlib/bwidget/scrolledwindow.rb
+#                               by Hidetoshi NAGAI (nagai@ai.kyutech.ac.jp)
+#
+
+require 'tk'
+require 'tk/frame'
+require 'tkextlib/bwidget.rb'
+
+module Tk
+  module BWidget
+    class ScrolledWindow < TkWindow
+    end
+  end
+end
+
+class Tk::BWidget::ScrolledWindow
+  TkCommandNames = ['ScrolledWindow'.freeze].freeze
+  WidgetClassName = 'ScrolledWindow'.freeze
+  WidgetClassNames[WidgetClassName] = self
+
+  def get_frame(&b)
+    win = window(tk_send_without_enc('getframe'))
+    win.instance_eval(&b) if b
+    win
+  end
+
+  def set_widget(win)
+    tk_send_without_enc('setwidget', win)
+    self
+  end
+end
diff --git a/ext/tk/lib/tkextlib/bwidget/scrollview.rb b/ext/tk/lib/tkextlib/bwidget/scrollview.rb
new file mode 100644
index 0000000000..5da528bd49
--- /dev/null
+++ b/ext/tk/lib/tkextlib/bwidget/scrollview.rb
@@ -0,0 +1,20 @@
+#
+#  tkextlib/bwidget/scrollview.rb
+#                               by Hidetoshi NAGAI (nagai@ai.kyutech.ac.jp)
+#
+
+require 'tk'
+require 'tkextlib/bwidget.rb'
+
+module Tk
+  module BWidget
+    class ScrollView < TkWindow
+    end
+  end
+end
+
+class Tk::BWidget::ScrollView
+  TkCommandNames = ['ScrollView'.freeze].freeze
+  WidgetClassName = 'ScrollView'.freeze
+  WidgetClassNames[WidgetClassName] = self
+end
diff --git a/ext/tk/lib/tkextlib/bwidget/selectcolor.rb b/ext/tk/lib/tkextlib/bwidget/selectcolor.rb
new file mode 100644
index 0000000000..742a84cd84
--- /dev/null
+++ b/ext/tk/lib/tkextlib/bwidget/selectcolor.rb
@@ -0,0 +1,45 @@
+#
+#  tkextlib/bwidget/selectcolor.rb
+#                               by Hidetoshi NAGAI (nagai@ai.kyutech.ac.jp)
+#
+
+require 'tk'
+require 'tkextlib/bwidget.rb'
+require 'tkextlib/bwidget/messagedlg'
+
+module Tk
+  module BWidget
+    class SelectColor < Tk::BWidget::MessageDlg
+    end
+  end
+end
+
+class Tk::BWidget::SelectColor
+  extend Tk
+
+  TkCommandNames = ['SelectColor'.freeze].freeze
+  WidgetClassName = 'SelectColor'.freeze
+  WidgetClassNames[WidgetClassName] = self
+
+  def dialog(keys={})
+    newkeys = @keys.dup
+    newkeys.update(_symbolkey2str(keys))
+    tk_call('SelectColor::dialog', @path, *hash_kv(newkeys))
+  end
+
+  def menu(*args)
+    if args[-1].kind_of?(Hash)
+      keys = args.pop
+    else
+      keys = {}
+    end
+    place = args.flatten
+    newkeys = @keys.dup
+    newkeys.update(_symbolkey2str(keys))
+    tk_call('SelectColor::menu', @path, place, *hash_kv(newkeys))
+  end
+
+  def self.set_color(idx, color)
+    tk_call('SelectColor::setcolor', idx, color)
+  end
+end
diff --git a/ext/tk/lib/tkextlib/bwidget/selectfont.rb b/ext/tk/lib/tkextlib/bwidget/selectfont.rb
new file mode 100644
index 0000000000..46ca0dbca8
--- /dev/null
+++ b/ext/tk/lib/tkextlib/bwidget/selectfont.rb
@@ -0,0 +1,79 @@
+#
+#  tkextlib/bwidget/selectfont.rb
+#                               by Hidetoshi NAGAI (nagai@ai.kyutech.ac.jp)
+#
+
+require 'tk'
+require 'tkextlib/bwidget.rb'
+require 'tkextlib/bwidget/messagedlg'
+
+module Tk
+  module BWidget
+    class SelectFont < Tk::BWidget::MessageDlg
+      class Dialog < Tk::BWidget::SelectFont
+      end
+      class Toolbar < TkWindow
+      end
+    end
+  end
+end
+
+class Tk::BWidget::SelectFont
+  extend Tk
+
+  TkCommandNames = ['SelectFont'.freeze].freeze
+  WidgetClassName = 'SelectFont'.freeze
+  WidgetClassNames[WidgetClassName] = self
+
+  def __font_optkeys
+    [] # without fontobj operation
+  end
+
+  def create
+    tk_call(self.class::TkCommandNames[0], @path, *hash_kv(@keys))
+  end
+
+  def self.load_font
+    tk_call('SelectFont::loadfont')
+  end
+end
+
+class Tk::BWidget::SelectFont::Dialog
+  def __font_optkeys
+    [] # without fontobj operation
+  end
+
+  def create_self(keys)
+    super(keys)
+    @keys['type'] = 'dialog'
+  end
+
+  def configure(slot, value=None)
+    if slot.kind_of?(Hash)
+      slot.delete['type']
+      slot.delete[:type]
+      return self if slot.empty?
+    else
+      return self if slot == 'type' || slot == :type
+    end
+    super(slot, value)
+  end
+
+  def create
+    @keys['type'] = 'dialog'
+    tk_call(Tk::BWidget::SelectFont::TkCommandNames[0], @path, *hash_kv(@keys))
+  end
+end
+
+class Tk::BWidget::SelectFont::Toolbar
+  def __font_optkeys
+    [] # without fontobj operation
+  end
+
+  def create_self(keys)
+    keys = {} unless keys
+    keys = _symbolkey2str(keys)
+    keys['type'] = 'toolbar'
+    tk_call(Tk::BWidget::SelectFont::TkCommandNames[0], @path, *hash_kv(keys))
+  end
+end
diff --git a/ext/tk/lib/tkextlib/bwidget/separator.rb b/ext/tk/lib/tkextlib/bwidget/separator.rb
new file mode 100644
index 0000000000..d9c3458e51
--- /dev/null
+++ b/ext/tk/lib/tkextlib/bwidget/separator.rb
@@ -0,0 +1,20 @@
+#
+#  tkextlib/bwidget/separator.rb
+#                               by Hidetoshi NAGAI (nagai@ai.kyutech.ac.jp)
+#
+
+require 'tk'
+require 'tkextlib/bwidget.rb'
+
+module Tk
+  module BWidget
+    class Separator < TkWindow
+    end
+  end
+end
+
+class Tk::BWidget::Separator
+  TkCommandNames = ['Separator'.freeze].freeze
+  WidgetClassName = 'Separator'.freeze
+  WidgetClassNames[WidgetClassName] = self
+end
diff --git a/ext/tk/lib/tkextlib/bwidget/setup.rb b/ext/tk/lib/tkextlib/bwidget/setup.rb
new file mode 100644
index 0000000000..ce0f0bd4d4
--- /dev/null
+++ b/ext/tk/lib/tkextlib/bwidget/setup.rb
@@ -0,0 +1,8 @@
+#
+#  setup.rb   --   setup script before calling TkPackage.require()
+#
+#    If you need some setup operations (for example, add a library path
+#    to the library search path) before using Tcl/Tk library packages 
+#    wrapped by Ruby scripts in this directory, please write the setup 
+#    operations in this file.
+#
diff --git a/ext/tk/lib/tkextlib/bwidget/spinbox.rb b/ext/tk/lib/tkextlib/bwidget/spinbox.rb
new file mode 100644
index 0000000000..4380e38355
--- /dev/null
+++ b/ext/tk/lib/tkextlib/bwidget/spinbox.rb
@@ -0,0 +1,58 @@
+#
+#  tkextlib/bwidget/entry.rb
+#                               by Hidetoshi NAGAI (nagai@ai.kyutech.ac.jp)
+#
+
+require 'tk'
+require 'tkextlib/bwidget.rb'
+require 'tkextlib/bwidget/arrowbutton'
+require 'tkextlib/bwidget/entry'
+
+module Tk
+  module BWidget
+    class SpinBox < TkEntry
+    end
+  end
+end
+
+class Tk::BWidget::SpinBox
+  include Scrollable
+
+  TkCommandNames = ['SpinBox'.freeze].freeze
+  WidgetClassName = 'SpinBox'.freeze
+  WidgetClassNames[WidgetClassName] = self
+
+  def entrybind(*args)
+    _bind([path, 'bind'], *args)
+    self
+  end
+
+  def entrybind_append(*args)
+    _bind_append([path, 'bind'], *args)
+    self
+  end
+
+  def entrybind_remove(*args)
+    _bind_remove([path, 'bind'], *args)
+    self
+  end
+
+  def entrybindinfo(*args)
+    _bindinfo([path, 'bind'], *args)
+    self
+  end
+
+  def get_index_of_value
+    number(tk_send_without_enc('getvalue'))
+  end
+  alias get_value get_index_of_value
+  alias get_value_index get_index_of_value
+
+  def set_value_by_index(idx)
+    idx = "@#{idx}" if idx.kind_of?(Integer)
+    tk_send_without_enc('setvalue', idx)
+    self
+  end
+  alias set_value set_value_by_index
+  alias set_index_value set_value_by_index
+end
diff --git a/ext/tk/lib/tkextlib/bwidget/titleframe.rb b/ext/tk/lib/tkextlib/bwidget/titleframe.rb
new file mode 100644
index 0000000000..f519490430
--- /dev/null
+++ b/ext/tk/lib/tkextlib/bwidget/titleframe.rb
@@ -0,0 +1,27 @@
+#
+#  tkextlib/bwidget/titleframe.rb
+#                               by Hidetoshi NAGAI (nagai@ai.kyutech.ac.jp)
+#
+
+require 'tk'
+require 'tk/frame'
+require 'tkextlib/bwidget.rb'
+
+module Tk
+  module BWidget
+    class TitleFrame < TkWindow
+    end
+  end
+end
+
+class Tk::BWidget::TitleFrame
+  TkCommandNames = ['TitleFrame'.freeze].freeze
+  WidgetClassName = 'TitleFrame'.freeze
+  WidgetClassNames[WidgetClassName] = self
+
+  def get_frame(&b)
+    win = window(tk_send_without_enc('getframe'))
+    win.instance_eval(&b) if b
+    win
+  end
+end
diff --git a/ext/tk/lib/tkextlib/bwidget/tree.rb b/ext/tk/lib/tkextlib/bwidget/tree.rb
new file mode 100644
index 0000000000..888ce9409f
--- /dev/null
+++ b/ext/tk/lib/tkextlib/bwidget/tree.rb
@@ -0,0 +1,374 @@
+#
+#  tkextlib/bwidget/tree.rb
+#                               by Hidetoshi NAGAI (nagai@ai.kyutech.ac.jp)
+#
+
+require 'tk'
+require 'tk/canvas'
+require 'tkextlib/bwidget.rb'
+
+module Tk
+  module BWidget
+    class Tree < TkWindow
+      class Node < TkObject
+      end
+    end
+  end
+end
+
+class Tk::BWidget::Tree
+  include TkItemConfigMethod
+  include Scrollable
+
+  TkCommandNames = ['Tree'.freeze].freeze
+  WidgetClassName = 'Tree'.freeze
+  WidgetClassNames[WidgetClassName] = self
+
+  class Event_for_Items < TkEvent::Event
+    def self._get_extra_args_tbl
+      [ 
+	TkComm.method(:string)   # item idenfier
+      ]
+    end
+  end
+
+  def tagid(tag)
+    if tag.kind_of?(Tk::BWidget::Tree::Node)
+      tag.id
+    else
+      # tag
+      _get_eval_string(tag)
+    end
+  end
+
+  def imagebind(*args)
+    _bind_for_event_class(Event_for_Items, [path, 'bindImage'], *args)
+    self
+  end
+
+  def imagebind_append(*args)
+    _bind_append_for_event_class(Event_for_Items, [path, 'bindImage'], *args)
+    self
+  end
+
+  def imagebind_remove(*args)
+    _bind_remove_for_event_class(Event_for_Items, [path, 'bindImage'], *args)
+    self
+  end
+
+  def imagebindinfo(*args)
+    _bindinfo_for_event_class(Event_for_Items, [path, 'bindImage'], *args)
+  end
+
+  def textbind(*args)
+    _bind_for_event_class(Event_for_Items, [path, 'bindText'], *args)
+    self
+  end
+
+  def textbind_append(*args)
+    _bind_append_for_event_class(Event_for_Items, [path, 'bindText'], *args)
+    self
+  end
+
+  def textbind_remove(*args)
+    _bind_remove_for_event_class(Event_for_Items, [path, 'bindText'], *args)
+    self
+  end
+
+  def textbindinfo(*args)
+    _bindinfo_for_event_class(Event_for_Items, [path, 'bindText'], *args)
+  end
+
+  def close_tree(node, recurse=None)
+    tk_send('closetree', tagid(node), recurse)
+    self
+  end
+
+  def delete(*args)
+    tk_send('delete', *(args.collect{|node| tagid(node)}))
+    self
+  end
+
+  def edit(node, text, *args)
+    tk_send('edit', tagid(node), text, *args)
+    self
+  end
+
+  def exist?(node)
+    bool(tk_send('exists', tagid(node)))
+  end
+
+  def index(node)
+    num_or_str(tk_send('index', tagid(node)))
+  end
+
+  def insert(idx, parent, node, keys={})
+    tk_send('insert', idx, tagid(parent), tagid(node), *hash_kv(keys))
+    self
+  end
+
+  def move(parent, node, idx)
+    tk_send('move', tagid(parent), tagid(node), idx)
+    self
+  end
+
+  def get_node(node, idx)
+    Tk::BWidget::Tree::Node.id2obj(self, tk_send('nodes', tagid(node), idx))
+  end
+
+  def nodes(node, first=None, last=None)
+    simplelist(tk_send('nodes', tagid(node), first, last)).collect{|node|
+      Tk::BWidget::Tree::Node.id2obj(self, node)
+    }
+  end
+
+  def open?(node)
+    bool(@tree.itemcget(tagid(node), 'open'))
+  end
+
+  def open_tree(node, recurse=None)
+    tk_send('opentree', tagid(node), recurse)
+    self
+  end
+
+  def parent(node)
+    Tk::BWidget::Tree::Node.id2obj(self, tk_send('parent', tagid(node)))
+  end
+
+  def reorder(node, neworder)
+    tk_send('reorder', tagid(node), neworder)
+    self
+  end
+
+  def see(node)
+    tk_send('see', tagid(node))
+    self
+  end
+
+  def selection_add(*args)
+    tk_send_without_enc('selection', 'add', 
+			*(args.collect{|node| tagid(node)}))
+    self
+  end
+
+  def selection_clear
+    tk_send_without_enc('selection', 'clear')
+    self
+  end
+
+  def selection_get
+    list(tk_send_without_enc('selection', 'get'))
+  end
+
+  def selection_include?(*args)
+    bool(tk_send_without_enc('selection', 'get', 
+			     *(args.collect{|node| tagid(node)})))
+  end
+
+  def selection_range(*args)
+    tk_send_without_enc('selection', 'range', 
+			*(args.collect{|node| tagid(node)}))
+    self
+  end
+
+  def selection_remove(*args)
+    tk_send_without_enc('selection', 'remove', 
+			*(args.collect{|node| tagid(node)}))
+    self
+  end
+
+  def selection_set(*args)
+    tk_send_without_enc('selection', 'set', 
+			*(args.collect{|node| tagid(node)}))
+    self
+  end
+
+  def selection_toggle(*args)
+    tk_send_without_enc('selection', 'toggle', 
+			*(args.collect{|node| tagid(node)}))
+    self
+  end
+
+  def toggle(node)
+    tk_send_without_enc('toggle', tagid(node))
+    self
+  end
+
+  def visible(node)
+    bool(tk_send_without_enc('visible', tagid(node)))
+  end
+end
+
+class Tk::BWidget::Tree::Node
+  include TkTreatTagFont
+
+  TreeNode_TBL = TkCore::INTERP.create_table
+  TreeNode_ID = ['node:'.freeze, '00000'.taint].freeze
+
+  TkCore::INTERP.init_ip_env{ TreeNode_TBL.clear }
+
+  def self.id2obj(tree, id)
+    tpath = tree.path
+    return id unless TreeNode_TBL[tpath]
+    TreeNode_TBL[tpath][id]? TreeNode_TBL[tpath][id]: id
+  end
+
+  def initialize(tree, *args)
+    if tree.kind_of?(Tk::BWidget::Tree)
+      @tree = tree
+      parent = args.shift
+      if parent.kind_of?(Tk::BWidget::Tree::Node)
+	if parent.tree.path != @tree.path
+	  fail RuntimeError, 'tree of parent node is not match'
+	end
+      end
+    elsif tree.kind_of?(Tk::BWidget::Tree::Node)
+      @tree = tree.tree
+      parent = tree.parent
+    else
+      fail RuntimeError, 
+	"expect Tk::BWidget::Tree or Tk::BWidget::Tree::Node for 1st argument"
+    end
+
+    if args[-1].kind_of?(Hash)
+      keys = _symbolkey2str(args.pop)
+    else
+      keys = {}
+    end
+
+    index = keys.delete('index')
+    unless args.empty?
+      index = args.shift
+    end
+    index = 'end' unless index
+
+    unless args.empty?
+      fail RuntimeError, 'too much arguments'
+    end
+
+    @tpath = @tree.path
+
+    if keys.key?('nodename')
+      @path = @id = keys.delete('nodename')
+    else
+      @path = @id = TreeNode_ID.join(TkCore::INTERP._ip_id_)
+      TreeNode_ID[1].succ!
+    end
+
+    TreeNode_TBL[@id] = self
+    TreeNode_TBL[@tpath] = {} unless TreeNode_TBL[@tpath]
+    TreeNode_TBL[@tpath][@id] = self
+
+    @tree.insert(index, parent, @id, keys)
+  end
+
+  def tree
+    @tree
+  end
+
+  def id
+    @id
+  end
+
+  def [](key)
+    cget(key)
+  end
+
+  def []=(key, val)
+    configure(key, val)
+    val
+  end
+
+  def cget(key)
+    @tree.itemcget(@id, key)
+  end
+
+  def configure(key, val=None)
+    @tree.itemconfigure(@id, key, val)
+  end
+
+  def configinfo(key=nil)
+    @tree.itemconfiginfo(@id, key)
+  end
+
+  def current_configinfo(key=nil)
+    @tree.current_itemconfiginfo(@id, key)
+  end
+
+  def close_tree(recurse=None)
+    @tree.close_tree(@id, recurse)
+    self
+  end
+
+  def delete
+    @tree.delete(@id)
+    self
+  end
+
+  def edit(*args)
+    @tree.edit(@id, *args)
+    self
+  end
+
+  def exist?
+    @tree.exist?(@id)
+  end
+
+  def index
+    @tree.index(@id)
+  end
+
+  def move(index, parent=nil)
+    if parent
+      @tree.move(parent, @id, index)
+    else
+      @tree.move(self.parent, @id, index)
+    end
+  end
+
+  def open_tree(recurse=None)
+    @tree.open_tree(@id, recurse)
+    self
+  end
+
+  def open?
+    bool(@tree.itemcget(@id, 'open'))
+  end
+
+  def parent
+    @tree.parent(@id)
+  end
+
+  def reorder(neworder)
+    @tree.reorder(@id, neworder)
+  end
+
+  def see
+    @tree.see(@id)
+  end
+
+  def selection_add
+    @tree.selection_add(@id)
+  end
+
+  def selection_remove
+    @tree.selection_remove(@id)
+  end
+
+  def selection_set
+    @tree.selection_set(@id)
+  end
+
+  def selection_toggle
+    @tree.selection_toggle(@id)
+  end
+
+  def toggle
+    @tree.toggle(@id)
+  end
+
+  def visible
+    @tree.visible(@id)
+  end
+end
+
diff --git a/ext/tk/lib/tkextlib/bwidget/widget.rb b/ext/tk/lib/tkextlib/bwidget/widget.rb
new file mode 100644
index 0000000000..eadf59c11c
--- /dev/null
+++ b/ext/tk/lib/tkextlib/bwidget/widget.rb
@@ -0,0 +1,113 @@
+#
+#  tkextlib/bwidget/widget.rb
+#                               by Hidetoshi NAGAI (nagai@ai.kyutech.ac.jp)
+#
+
+require 'tk'
+require 'tkextlib/bwidget.rb'
+
+module Tk
+  module BWidget
+    module Widget
+    end
+  end
+end
+
+module Tk::BWidget::Widget
+  include Tk
+  extend Tk
+
+  def self.__pathname
+    'Widget::configure'
+  end
+
+  def self.__cget_cmd
+    ['Widget::cget']
+  end
+
+  def self.__config_cmd
+    ['Widget::configure']
+  end
+
+  def self.cget(slot)
+    self.current_configinfo(slot).values[0]
+  end
+
+  def self.add_map(klass, subclass, subpath, opts)
+    tk_call('Widget::addmap', klass, subclass, subpath, opts)
+  end
+
+  def self.bwinclude(klass, subclass, subpath, *args)
+    tk_call('Widget::bwinclude', klass, subclass, subpath, *args)
+  end
+
+  def self.create(klass, path, rename=None, &b)
+    win = window(tk_call('Widget::create', klass, path, rename))
+    win.instance_eval(&b) if b
+    win
+  end
+
+  def self.declare(klass, optlist)
+    tk_call('Widget::declare', klass, optlist)
+  end
+
+  def self.define(klass, filename, *args)
+    tk_call('Widget::define', klass, filename, *args)
+  end
+
+  def self.destroy(win)
+    tk_call('Widget::destroy', win)
+  end
+
+  def self.focus_next(win)
+    tk_call('Widget::focusNext', win)
+  end
+
+  def self.focus_ok(win)
+    tk_call('Widget::focusOk', win)
+  end
+
+  def self.focus_prev(win)
+    tk_call('Widget::focusPrev', win)
+  end
+
+  def self.generate_doc(dir, widgetlist)
+    tk_call('Widget::generate-doc', dir, widgetlist)
+  end
+
+  def self.generate_widget_doc(klass, iscmd, file)
+    tk_call('Widget::generate-widget-doc', klass, iscmd, file)
+  end
+
+  def self.get_option(win, option)
+    tk_call('Widget::getoption', win, option)
+  end
+
+  def self.get_variable(win, varname, my_varname=None)
+    tk_call('Widget::getVariable', win, varname, my_varname)
+  end
+
+  def self.has_changed(win, option, pvalue)
+    tk_call('Widget::hasChanged', win, option, pvalue)
+  end
+
+  def self.init(klass, win, options)
+    tk_call('Widget::init', klass, win, options)
+  end
+
+  def self.set_option(win, option, value)
+    tk_call('Widget::setoption', win, option, value)
+  end
+
+  def self.sub_cget(win, subwidget)
+    tk_call('Widget::subcget', win, subwidget)
+  end
+
+  def self.sync_options(klass, subclass, subpath, options)
+    tk_call('Widget::syncoptions', klass, subclass, subpath, options)
+  end
+
+  def self.tkinclude(klass, tkwidget, subpath, *args)
+    tk_call('Widget::tkinclude', klass, tkwidget, subpath, *args)
+  end
+end
diff --git a/ext/tk/lib/tkextlib/tcllib.rb b/ext/tk/lib/tkextlib/tcllib.rb
index 56f21556ae..2955416b2b 100644
--- a/ext/tk/lib/tkextlib/tcllib.rb
+++ b/ext/tk/lib/tkextlib/tcllib.rb
@@ -8,50 +8,36 @@ require 'tk'
 # call setup script for general 'tkextlib' libraries
 require 'tkextlib/setup.rb'
 
-# library directory
-dir = File.expand_path(__FILE__).sub(/#{File.extname(__FILE__)}$/, '')
-
 # call setup script
-require File.join(dir, 'setup.rb')
+require 'tkextlib/tcllib/setup.rb'
 
 # package:: autoscroll
-#require 'tkextlib/tcllib/autoscroll'
-require File.join(dir, 'autoscroll')
+require 'tkextlib/tcllib/autoscroll'
 
 # package:: cursor
-#require 'tkextlib/tcllib/cursor'
-require File.join(dir, 'cursor')
+require 'tkextlib/tcllib/cursor'
 
 # package:: style
-#require 'tkextlib/tcllib/style'
-require File.join(dir, 'style')
+require 'tkextlib/tcllib/style'
 
 
 # autoload
 module Tk
   module Tcllib
-    dir = File.expand_path(__FILE__).sub(/#{File.extname(__FILE__)}$/, '')
-
     # package:: ctext
-    #autoload :CText,      'tkextlib/tcllib/ctext'
-    autoload :CText,      File.join(dir, 'ctext')
+    autoload :CText,      'tkextlib/tcllib/ctext'
 
     # package:: datefield
-    #autoload :Datefield,  'tkextlib/tcllib/datefield'
-    #autoload :DateField,  'tkextlib/tcllib/datefield'
-    autoload :Datefield,  File.join(dir, 'datefield')
-    autoload :DateField,  File.join(dir, 'datefield')
+    autoload :Datefield,  'tkextlib/tcllib/datefield'
+    autoload :DateField,  'tkextlib/tcllib/datefield'
 
     # package:: ipentry
-    #autoload :IP_Entry,   'tkextlib/tcllib/ip_entry'
-    autoload :IP_Entry,   File.join(dir, 'ip_entry')
+    autoload :IP_Entry,   'tkextlib/tcllib/ip_entry'
 
     # package:: Plotchart
-    #autoload :Plotchart,  'tkextlib/tcllib/plotchart'
-    autoload :Plotchart,  File.join(dir, 'plotchart')
+    autoload :Plotchart,  'tkextlib/tcllib/plotchart'
 
     # package:: tkpiechart
-    #autoload :Tkpiechart, 'tkextlib/tcllib/tkpiechart'
-    autoload :Tkpiechart, File.join(dir, 'tkpiechart')
+    autoload :Tkpiechart, 'tkextlib/tcllib/tkpiechart'
   end
 end
diff --git a/ext/tk/lib/tkextlib/tcllib/autoscroll.rb b/ext/tk/lib/tkextlib/tcllib/autoscroll.rb
index 9c161d7ec9..800a70744c 100644
--- a/ext/tk/lib/tkextlib/tcllib/autoscroll.rb
+++ b/ext/tk/lib/tkextlib/tcllib/autoscroll.rb
@@ -26,17 +26,24 @@
 
 require 'tk'
 require 'tk/scrollbar'
-
-# call setup script for general 'tkextlib' libraries
-require 'tkextlib/setup.rb'
-
-# call setup script
-require File.join(File.dirname(File.expand_path(__FILE__)), 'setup.rb')
+require 'tkextlib/tcllib.rb'
 
 # TkPackage.require('autoscroll', '1.0')
 TkPackage.require('autoscroll')
 
 module Tk
+  module Tcllib
+    module Autoscroll
+      def self.package_version
+	begin
+	  TkPackage.require('autoscroll')
+	rescue
+	  ''
+	end
+      end
+    end
+  end
+
   module Scrollable
     def autoscroll(mode = nil)
       case mode
diff --git a/ext/tk/lib/tkextlib/tcllib/ctext.rb b/ext/tk/lib/tkextlib/tcllib/ctext.rb
index 6fa3e2edda..2318235a4d 100644
--- a/ext/tk/lib/tkextlib/tcllib/ctext.rb
+++ b/ext/tk/lib/tkextlib/tcllib/ctext.rb
@@ -8,12 +8,7 @@
 
 require 'tk'
 require 'tk/text'
-
-# call setup script for general 'tkextlib' libraries
-require 'tkextlib/setup.rb'
-
-# call setup script
-require File.join(File.dirname(File.expand_path(__FILE__)), 'setup.rb')
+require 'tkextlib/tcllib.rb'
 
 # TkPackage.require('ctext', '3.1')
 TkPackage.require('ctext')
@@ -21,6 +16,13 @@ TkPackage.require('ctext')
 module Tk
   module Tcllib
     class CText < TkText
+      def self.package_version
+	begin
+	  TkPackage.require('ctext')
+	rescue
+	  ''
+	end
+      end
     end
   end
 end
diff --git a/ext/tk/lib/tkextlib/tcllib/cursor.rb b/ext/tk/lib/tkextlib/tcllib/cursor.rb
index cf4f247209..119b8a143f 100644
--- a/ext/tk/lib/tkextlib/tcllib/cursor.rb
+++ b/ext/tk/lib/tkextlib/tcllib/cursor.rb
@@ -7,17 +7,24 @@
 #
 
 require 'tk'
-
-# call setup script for general 'tkextlib' libraries
-require 'tkextlib/setup.rb'
-
-# call setup script
-require File.join(File.dirname(File.expand_path(__FILE__)), 'setup.rb')
+require 'tkextlib/tcllib.rb'
 
 # TkPackage.require('cursor', '0.1')
 TkPackage.require('cursor')
 
 module Tk
+  module Tcllib
+    module Cursor
+      def self.package_version
+	begin
+	  TkPackage.require('ipentry')
+	rescue
+	  ''
+	end
+      end
+    end
+  end
+
   def self.cursor_display(parent=None)
     # Pops up a dialog with a listbox containing all the cursor names. 
     # Selecting a cursor name will display it in that dialog. 
diff --git a/ext/tk/lib/tkextlib/tcllib/datefield.rb b/ext/tk/lib/tkextlib/tcllib/datefield.rb
index 6d3ba4693f..4d80b06866 100644
--- a/ext/tk/lib/tkextlib/tcllib/datefield.rb
+++ b/ext/tk/lib/tkextlib/tcllib/datefield.rb
@@ -17,12 +17,7 @@
 
 require 'tk'
 require 'tk/entry'
-
-# call setup script for general 'tkextlib' libraries
-require 'tkextlib/setup.rb'
-
-# call setup script
-require File.join(File.dirname(File.expand_path(__FILE__)), 'setup.rb')
+require 'tkextlib/tcllib.rb'
 
 # TkPackage.require('datefield', '0.1')
 TkPackage.require('datefield')
@@ -30,6 +25,13 @@ TkPackage.require('datefield')
 module Tk
   module Tcllib
     class Datefield < TkEntry
+      def self.package_version
+	begin
+	  TkPackage.require('datefield')
+	rescue
+	  ''
+	end
+      end
     end
     DateField = Datefield
   end
diff --git a/ext/tk/lib/tkextlib/tcllib/ip_entry.rb b/ext/tk/lib/tkextlib/tcllib/ip_entry.rb
index aed47da63a..748478a322 100644
--- a/ext/tk/lib/tkextlib/tcllib/ip_entry.rb
+++ b/ext/tk/lib/tkextlib/tcllib/ip_entry.rb
@@ -11,13 +11,7 @@
 # It guarantees a valid address at all times.
 
 require 'tk'
-require 'tk/entry'
-
-# call setup script for general 'tkextlib' libraries
-require 'tkextlib/setup.rb'
-
-# call setup script
-require File.join(File.dirname(File.expand_path(__FILE__)), 'setup.rb')
+require 'tkextlib/tcllib.rb'
 
 # TkPackage.require('ipentry', '0.1')
 TkPackage.require('ipentry')
@@ -25,6 +19,13 @@ TkPackage.require('ipentry')
 module Tk
   module Tcllib
     class IP_Entry < TkEntry
+      def self.package_version
+	begin
+	  TkPackage.require('ipentry')
+	rescue
+	  ''
+	end
+      end
     end
   end
 end
diff --git a/ext/tk/lib/tkextlib/tcllib/plotchart.rb b/ext/tk/lib/tkextlib/tcllib/plotchart.rb
index 108507b05b..b22a4ebbdf 100644
--- a/ext/tk/lib/tkextlib/tcllib/plotchart.rb
+++ b/ext/tk/lib/tkextlib/tcllib/plotchart.rb
@@ -58,12 +58,7 @@
 #
 
 require 'tk'
-
-# call setup script for general 'tkextlib' libraries
-require 'tkextlib/setup.rb'
-
-# call setup script
-require File.join(File.dirname(File.expand_path(__FILE__)), 'setup.rb')
+require 'tkextlib/tcllib.rb'
 
 # TkPackage.require('Plotchart', '0.9')
 TkPackage.require('Plotchart')
@@ -71,6 +66,13 @@ TkPackage.require('Plotchart')
 module Tk
   module Tcllib
     module Plotchart
+      def self.package_version
+	begin
+	  TkPackage.require('Plotchart')
+	rescue
+	  ''
+	end
+      end
     end
   end
 end
@@ -122,7 +124,7 @@ module Tk::Tcllib::Plotchart
 
   ############################
   module ChartMethod
-    include TkUtil
+    include TkCore
 
     def title(str)
       tk_call_without_enc(@chart, 'title', _get_eval_enc_str(str))
diff --git a/ext/tk/lib/tkextlib/tcllib/style.rb b/ext/tk/lib/tkextlib/tcllib/style.rb
index e441cd83b0..dea2962b7f 100644
--- a/ext/tk/lib/tkextlib/tcllib/style.rb
+++ b/ext/tk/lib/tkextlib/tcllib/style.rb
@@ -7,18 +7,21 @@
 #
 
 require 'tk'
-
-# call setup script for general 'tkextlib' libraries
-require 'tkextlib/setup.rb'
-
-# call setup script
-require File.join(File.dirname(File.expand_path(__FILE__)), 'setup.rb')
+require 'tkextlib/tcllib.rb'
 
 # TkPackage.require('style', '0.1')
 TkPackage.require('style')
 
 module Tk
   module Style
+    def self.package_version
+      begin
+	TkPackage.require('style')
+      rescue
+	''
+      end
+    end
+
     def self.names
       tk_split_simplelist(tk_call('style::names'))
     end
diff --git a/ext/tk/lib/tkextlib/tcllib/tkpiechart.rb b/ext/tk/lib/tkextlib/tcllib/tkpiechart.rb
index 1ef49ef4f4..4665edca7e 100644
--- a/ext/tk/lib/tkextlib/tcllib/tkpiechart.rb
+++ b/ext/tk/lib/tkextlib/tcllib/tkpiechart.rb
@@ -8,12 +8,7 @@
 
 require 'tk'
 require 'tk/canvas'
-
-# call setup script for general 'tkextlib' libraries
-require 'tkextlib/setup.rb'
-
-# call setup script
-require File.join(File.dirname(File.expand_path(__FILE__)), 'setup.rb')
+require 'tkextlib/tcllib.rb'
 
 # TkPackage.require('tkpiechart', '6.6')
 TkPackage.require('tkpiechart')
@@ -26,6 +21,14 @@ module Tk
 end
 
 module Tk::Tcllib::Tkpiechart
+  def self.package_version
+    begin
+      TkPackage.require('tkpiechart')
+    rescue
+      ''
+    end
+  end
+
   module ConfigMethod
     include TkConfigMethod
 
diff --git a/ext/tk/lib/tkextlib/tile.rb b/ext/tk/lib/tkextlib/tile.rb
index 866cdf0644..7633981559 100644
--- a/ext/tk/lib/tkextlib/tile.rb
+++ b/ext/tk/lib/tkextlib/tile.rb
@@ -9,10 +9,7 @@ require 'tk'
 require 'tkextlib/setup.rb'
 
 # library directory
-dir = File.expand_path(__FILE__).sub(/#{File.extname(__FILE__)}$/, '')
-
-# call setup script
-require File.join(dir, 'setup.rb')
+require 'tkextlib/tile/setup.rb'
 
 # load package
 # TkPackage.require('tile', '0.4')
@@ -21,6 +18,14 @@ TkPackage.require('tile')
 # autoload
 module Tk
   module Tile
+    def self.package_version
+      begin
+	TkPackage.require('tile')
+      rescue
+	''
+      end
+    end
+
     module TileWidget
       def instate(state, script=nil, &b)
 	if script
@@ -41,33 +46,22 @@ module Tk
       end
     end
 
+    ######################################
 
-    # library directory
-    dir = File.expand_path(__FILE__).sub(/#{File.extname(__FILE__)}$/, '')
-
-    #autoload :TButton,       'tkextlib/tile/tbutton'
-    autoload :TButton,       File.join(dir, 'tbutton')
+    autoload :TButton,       'tkextlib/tile/tbutton'
 
-    #autoload :TCheckButton,  'tkextlib/tile/tcheckbutton'
-    #autoload :TCheckbutton,  'tkextlib/tile/tcheckbutton'
-    autoload :TCheckButton,  File.join(dir, 'tcheckbutton')
-    autoload :TCheckbutton,  File.join(dir, 'tcheckbutton')
+    autoload :TCheckButton,  'tkextlib/tile/tcheckbutton'
+    autoload :TCheckbutton,  'tkextlib/tile/tcheckbutton'
 
-    #autoload :TLabel,        'tkextlib/tile/tlabel'
-    autoload :TLabel,        File.join(dir, 'tlabel')
+    autoload :TLabel,        'tkextlib/tile/tlabel'
 
-    #autoload :TMenubutton,   'tkextlib/tile/tmenubutton'
-    autoload :TMenubutton,   File.join(dir, 'tmenubutton')
+    autoload :TMenubutton,   'tkextlib/tile/tmenubutton'
 
-    #autoload :TNotebook,     'tkextlib/tile/tnotebook'
-    autoload :TNotebook,     File.join(dir, 'tnotebook')
+    autoload :TNotebook,     'tkextlib/tile/tnotebook'
 
-    #autoload :TRadioButton,  'tkextlib/tile/tradiobutton'
-    #autoload :TRadiobutton,  'tkextlib/tile/tradiobutton'
-    autoload :TRadioButton,  File.join(dir, 'tradiobutton')
-    autoload :TRadiobutton,  File.join(dir, 'tradiobutton')
+    autoload :TRadioButton,  'tkextlib/tile/tradiobutton'
+    autoload :TRadiobutton,  'tkextlib/tile/tradiobutton'
 
-    #autoload :Style,         'tkextlib/tile/style'
-    autoload :Style,         File.join(dir, 'style')
+    autoload :Style,         'tkextlib/tile/style'
   end
 end
diff --git a/ext/tk/lib/tkextlib/tile/style.rb b/ext/tk/lib/tkextlib/tile/style.rb
index be4b45ab73..474c4f21b9 100644
--- a/ext/tk/lib/tkextlib/tile/style.rb
+++ b/ext/tk/lib/tkextlib/tile/style.rb
@@ -3,12 +3,14 @@
 #                               by Hidetoshi NAGAI (nagai@ai.kyutech.ac.jp)
 #
 require 'tk'
+require 'tkextlib/tile.rb'
 
-# call setup script for general 'tkextlib' libraries
-require 'tkextlib/setup.rb'
-
-# call setup script  --  <libdir>/tkextlib/tile.rb
-require(File.dirname(File.expand_path(__FILE__)) + '.rb')
+module Tk
+  module Tile
+    module Style
+    end
+  end
+end
 
 module Tk::Tile::Style
 end
diff --git a/ext/tk/lib/tkextlib/tile/tbutton.rb b/ext/tk/lib/tkextlib/tile/tbutton.rb
index c73b7904ed..b5c3475692 100644
--- a/ext/tk/lib/tkextlib/tile/tbutton.rb
+++ b/ext/tk/lib/tkextlib/tile/tbutton.rb
@@ -3,12 +3,14 @@
 #                               by Hidetoshi NAGAI (nagai@ai.kyutech.ac.jp)
 #
 require 'tk'
+require 'tkextlib/tile.rb'
 
-# call setup script for general 'tkextlib' libraries
-require 'tkextlib/setup.rb'
-
-# call setup script  --  <libdir>/tkextlib/tile.rb
-require(File.dirname(File.expand_path(__FILE__)) + '.rb')
+module Tk
+  module Tile
+    class TButton < TkButton
+    end
+  end
+end
 
 class Tk::Tile::TButton < TkButton
   include Tk::Tile::TileWidget
diff --git a/ext/tk/lib/tkextlib/tile/tcheckbutton.rb b/ext/tk/lib/tkextlib/tile/tcheckbutton.rb
index f5ab008820..4ba77d95d3 100644
--- a/ext/tk/lib/tkextlib/tile/tcheckbutton.rb
+++ b/ext/tk/lib/tkextlib/tile/tcheckbutton.rb
@@ -3,12 +3,15 @@
 #                               by Hidetoshi NAGAI (nagai@ai.kyutech.ac.jp)
 #
 require 'tk'
+require 'tkextlib/tile.rb'
 
-# call setup script for general 'tkextlib' libraries
-require 'tkextlib/setup.rb'
-
-# call setup script  --  <libdir>/tkextlib/tile.rb
-require(File.dirname(File.expand_path(__FILE__)) + '.rb')
+module Tk
+  module Tile
+    class TCheckButton < TkCheckButton
+    end
+    TCheckbutton = TCheckButton
+  end
+end
 
 class Tk::Tile::TCheckButton < TkCheckButton
   include Tk::Tile::TileWidget
@@ -26,8 +29,3 @@ class Tk::Tile::TCheckButton < TkCheckButton
   end
   private :create_self
 end
-module Tk
-  module Tile
-    TCheckbutton = TCheckButton
-  end
-end
diff --git a/ext/tk/lib/tkextlib/tile/tlabel.rb b/ext/tk/lib/tkextlib/tile/tlabel.rb
index 1b7302cab1..d2eaf45273 100644
--- a/ext/tk/lib/tkextlib/tile/tlabel.rb
+++ b/ext/tk/lib/tkextlib/tile/tlabel.rb
@@ -3,12 +3,14 @@
 #                               by Hidetoshi NAGAI (nagai@ai.kyutech.ac.jp)
 #
 require 'tk'
+require 'tkextlib/tile.rb'
 
-# call setup script for general 'tkextlib' libraries
-require 'tkextlib/setup.rb'
-
-# call setup script  --  <libdir>/tkextlib/tile.rb
-require(File.dirname(File.expand_path(__FILE__)) + '.rb')
+module Tk
+  module Tile
+    class TLabel < TkLabel
+    end
+  end
+end
 
 class Tk::Tile::TLabel < TkLabel
   include Tk::Tile::TileWidget
diff --git a/ext/tk/lib/tkextlib/tile/tmenubutton.rb b/ext/tk/lib/tkextlib/tile/tmenubutton.rb
index c827629c7d..332db2b74e 100644
--- a/ext/tk/lib/tkextlib/tile/tmenubutton.rb
+++ b/ext/tk/lib/tkextlib/tile/tmenubutton.rb
@@ -3,12 +3,14 @@
 #                               by Hidetoshi NAGAI (nagai@ai.kyutech.ac.jp)
 #
 require 'tk'
+require 'tkextlib/tile.rb'
 
-# call setup script for general 'tkextlib' libraries
-require 'tkextlib/setup.rb'
-
-# call setup script  --  <libdir>/tkextlib/tile.rb
-require(File.dirname(File.expand_path(__FILE__)) + '.rb')
+module Tk
+  module Tile
+    class TMenubutton < TkMenubutton
+    end
+  end
+end
 
 class Tk::Tile::TMenubutton < TkMenubutton
   include Tk::Tile::TileWidget
diff --git a/ext/tk/lib/tkextlib/tile/tnotebook.rb b/ext/tk/lib/tkextlib/tile/tnotebook.rb
index 40242b5235..c693d5ce2b 100644
--- a/ext/tk/lib/tkextlib/tile/tnotebook.rb
+++ b/ext/tk/lib/tkextlib/tile/tnotebook.rb
@@ -3,12 +3,14 @@
 #                               by Hidetoshi NAGAI (nagai@ai.kyutech.ac.jp)
 #
 require 'tk'
+require 'tkextlib/tile.rb'
 
-# call setup script for general 'tkextlib' libraries
-require 'tkextlib/setup.rb'
-
-# call setup script  --  <libdir>/tkextlib/tile.rb
-require(File.dirname(File.expand_path(__FILE__)) + '.rb')
+module Tk
+  module Tile
+    class TNotebook < TkWindow
+    end
+  end
+end
 
 class Tk::Tile::TNotebook < TkWindow
   ################################
diff --git a/ext/tk/lib/tkextlib/tile/tradiobutton.rb b/ext/tk/lib/tkextlib/tile/tradiobutton.rb
index 2587a74cf3..66cba62960 100644
--- a/ext/tk/lib/tkextlib/tile/tradiobutton.rb
+++ b/ext/tk/lib/tkextlib/tile/tradiobutton.rb
@@ -3,12 +3,15 @@
 #                               by Hidetoshi NAGAI (nagai@ai.kyutech.ac.jp)
 #
 require 'tk'
+require 'tkextlib/tile.rb'
 
-# call setup script for general 'tkextlib' libraries
-require 'tkextlib/setup.rb'
-
-# call setup script  --  <libdir>/tkextlib/tile.rb
-require(File.dirname(File.expand_path(__FILE__)) + '.rb')
+module Tk
+  module Tile
+    class TRadioButton < TkRadioButton
+    end
+    TRadiobutton = TRadioButton
+  end
+end
 
 class Tk::Tile::TRadioButton < TkRadioButton
   include Tk::Tile::TileWidget
@@ -26,8 +29,3 @@ class Tk::Tile::TRadioButton < TkRadioButton
   end
   private :create_self
 end
-module Tk
-  module Tile
-    TRadiobutton = TRadioButton
-  end
-end
diff --git a/ext/tk/lib/tkextlib/tkDND.rb b/ext/tk/lib/tkextlib/tkDND.rb
index 260769df7f..5d52e34418 100644
--- a/ext/tk/lib/tkextlib/tkDND.rb
+++ b/ext/tk/lib/tkextlib/tkDND.rb
@@ -7,19 +7,12 @@ require 'tk'
 # call setup script for general 'tkextlib' libraries
 require 'tkextlib/setup.rb'
 
-# library directory
-dir = File.expand_path(__FILE__).sub(/#{File.extname(__FILE__)}$/, '')
-
 # call setup script
-require File.join(dir, 'setup.rb')
+require 'tkextlib/tkDND/setup.rb'
 
 module Tk
   module TkDND
-    dir = File.expand_path(__FILE__).sub(/#{File.extname(__FILE__)}$/, '')
-
-    #autoload :DND,   'tkextlib/tkDND/tkdnd'
-    #autoload :Shape, 'tkextlib/tkDND/shape'
-    autoload :DND,   File.join(dir, 'tkdnd')
-    autoload :Shape, File.join(dir, 'shape')
+    autoload :DND,   'tkextlib/tkDND/tkdnd'
+    autoload :Shape, 'tkextlib/tkDND/shape'
   end
 end
diff --git a/ext/tk/lib/tkextlib/tkDND/shape.rb b/ext/tk/lib/tkextlib/tkDND/shape.rb
index 3e4a94f526..8f4716ceea 100644
--- a/ext/tk/lib/tkextlib/tkDND/shape.rb
+++ b/ext/tk/lib/tkextlib/tkDND/shape.rb
@@ -9,7 +9,7 @@ require 'tk'
 require 'tkextlib/setup.rb'
 
 # call setup script
-require File.join(File.dirname(File.expand_path(__FILE__)), 'setup.rb')
+require 'tkextlib/tkDND/setup.rb'
 
 # TkPackage.require('shape', '0.3')
 TkPackage.require('shape')
@@ -17,9 +17,29 @@ TkPackage.require('shape')
 module Tk
   module TkDND
     module Shape
+=begin
+      def self.package_version
+	begin
+	  TkPackage.require('shape')
+	rescue
+	  ''
+	end
+      end
+=end
+      def self.package_version
+	Tk.tk_call('set', 'shape_version')
+      end
+      alias shape_version package_version
+
+      def self.package_patchlevel
+	Tk.tk_call('set', 'shape_patchlevel')
+      end
+      alias shape_patchlevel package_patchlevel
+
       def self.version
 	tk_call('shape', 'version')
       end
+      alias xshape_version version
 
       ############################
 
diff --git a/ext/tk/lib/tkextlib/tkDND/tkdnd.rb b/ext/tk/lib/tkextlib/tkDND/tkdnd.rb
index 036d1998bd..d0895c2afd 100644
--- a/ext/tk/lib/tkextlib/tkDND/tkdnd.rb
+++ b/ext/tk/lib/tkextlib/tkDND/tkdnd.rb
@@ -9,12 +9,20 @@ require 'tk'
 require 'tkextlib/setup.rb'
 
 # call setup script
-require File.join(File.dirname(File.expand_path(__FILE__)), 'setup.rb')
+require 'tkextlib/tkDND/setup.rb'
 
 TkPackage.require('tkdnd')
 
 module Tk
   module TkDND
+    def self.package_version
+      begin
+	TkPackage.require('tkdnd')
+      rescue
+	''
+      end
+    end
+
     class DND_Subst < TkUtil::CallbackSubst
       KEY_TBL = [
 	[ ?a, ?l, :actions ], 
@@ -49,6 +57,14 @@ module Tk
     end
 
     module DND
+      def self.version
+	begin
+	  TkPackage.require('tkdnd')
+	rescue
+	  ''
+	end
+      end
+
       def dnd_bindtarget_info(type=nil, event=nil)
 	if event
 	  procedure(tk_call('dnd', 'bindtarget', @path, type, event))
diff --git a/ext/tk/lib/tkextlib/tkHTML.rb b/ext/tk/lib/tkextlib/tkHTML.rb
index f32aed99f1..5fddde72ff 100644
--- a/ext/tk/lib/tkextlib/tkHTML.rb
+++ b/ext/tk/lib/tkextlib/tkHTML.rb
@@ -6,11 +6,8 @@
 # call setup script for general 'tkextlib' libraries
 require 'tkextlib/setup.rb'
 
-# library directory
-dir = File.expand_path(__FILE__).sub(/#{File.extname(__FILE__)}$/, '')
-
 # call setup script
-require File.join(dir, 'setup.rb')
+require 'tkextlib/tkHTML/setup.rb'
 
 # load library
-require File.join(dir, 'htmlwidget')
+require 'tkextlib/tkHTML/htmlwidget'
diff --git a/ext/tk/lib/tkextlib/tkHTML/htmlwidget.rb b/ext/tk/lib/tkextlib/tkHTML/htmlwidget.rb
index 5c0657025a..0c900cdb85 100644
--- a/ext/tk/lib/tkextlib/tkHTML/htmlwidget.rb
+++ b/ext/tk/lib/tkextlib/tkHTML/htmlwidget.rb
@@ -9,21 +9,27 @@ require 'tk'
 require 'tkextlib/setup.rb'
 
 # call setup script
-require File.join(File.dirname(File.expand_path(__FILE__)), 'setup.rb')
+require 'tkextlib/tkHTML/setup.rb'
 
 # TkPackage.require('Tkhtml', '2.0')
 TkPackage.require('Tkhtml')
 
 module Tk
   class HTML_Widget < TkWindow
+    def self.package_version
+      begin
+	TkPackage.require('Tkhtml')
+      rescue
+	''
+      end
+    end
+
     class ClippingWindow < TkWindow
     end
   end
 end
 
 class Tk::HTML_Widget::ClippingWindow
-  extend TkUtil
-
   WidgetClassName = 'HtmlClip'.freeze
   WidgetClassNames[WidgetClassName] = self
 
@@ -32,7 +38,7 @@ class Tk::HTML_Widget::ClippingWindow
 
   def self.new(parent, keys={})
     if parent.kind_of?(Hash)
-      keys = _symbolkey2str(parent)
+      keys = TkComm._symbolkey2str(parent)
       parent = keys.delete('parent')
     end
 
diff --git a/ext/tk/lib/tkextlib/tkimg.rb b/ext/tk/lib/tkextlib/tkimg.rb
index 06184589b4..f70d76c9d1 100644
--- a/ext/tk/lib/tkextlib/tkimg.rb
+++ b/ext/tk/lib/tkextlib/tkimg.rb
@@ -8,16 +8,24 @@ require 'tk'
 # call setup script for general 'tkextlib' libraries
 require 'tkextlib/setup.rb'
 
-# library directory
-dir = File.expand_path(__FILE__).sub(/#{File.extname(__FILE__)}$/, '')
-
 # call setup script
-require File.join(dir, 'setup.rb')
+require 'tkextlib/tkimg/setup.rb'
 
 # load all image format handlers
 #TkPackage.require('Img', '1.3')
 TkPackage.require('Img')
 
+module Tk
+  module Img
+    def self.package_version
+      begin
+	TkPackage.require('Img')
+      rescue
+	''
+      end
+    end
+  end
+end
+
 # autoload
-#autoload :TkPixmapImage, 'tkextlib/tkimg/pixmap'
-autoload :TkPixmapImage, File.join(dir, 'pixmap')
+autoload :TkPixmapImage, 'tkextlib/tkimg/pixmap'
diff --git a/ext/tk/lib/tkextlib/tkimg/bmp.rb b/ext/tk/lib/tkextlib/tkimg/bmp.rb
index 5bef0c7168..e6031a43ea 100644
--- a/ext/tk/lib/tkextlib/tkimg/bmp.rb
+++ b/ext/tk/lib/tkextlib/tkimg/bmp.rb
@@ -8,7 +8,21 @@ require 'tk'
 require 'tkextlib/setup.rb'
 
 # call setup script
-require File.join(File.dirname(File.expand_path(__FILE__)), 'setup.rb')
+require 'tkextlib/tkimg/setup.rb'
 
 #TkPackage.require('img::bmp', '1.3')
 TkPackage.require('img::bmp')
+
+module Tk
+  module Img
+    module BMP
+      def self.package_version
+	begin
+	  TkPackage.require('img::bmp')
+	rescue
+	  ''
+	end
+      end
+    end
+  end
+end
diff --git a/ext/tk/lib/tkextlib/tkimg/gif.rb b/ext/tk/lib/tkextlib/tkimg/gif.rb
index 65c3b88a50..b464434498 100644
--- a/ext/tk/lib/tkextlib/tkimg/gif.rb
+++ b/ext/tk/lib/tkextlib/tkimg/gif.rb
@@ -8,7 +8,21 @@ require 'tk'
 require 'tkextlib/setup.rb'
 
 # call setup script
-require File.join(File.dirname(File.expand_path(__FILE__)), 'setup.rb')
+require 'tkextlib/tkimg/setup.rb'
 
 # TkPackage.require('img::gif', '1.3')
 TkPackage.require('img::gif')
+
+module Tk
+  module Img
+    module GIF
+      def self.package_version
+	begin
+	  TkPackage.require('img::gif')
+	rescue
+	  ''
+	end
+      end
+    end
+  end
+end
diff --git a/ext/tk/lib/tkextlib/tkimg/ico.rb b/ext/tk/lib/tkextlib/tkimg/ico.rb
index 43646ec8da..2872a621ad 100644
--- a/ext/tk/lib/tkextlib/tkimg/ico.rb
+++ b/ext/tk/lib/tkextlib/tkimg/ico.rb
@@ -8,7 +8,21 @@ require 'tk'
 require 'tkextlib/setup.rb'
 
 # call setup script
-require File.join(File.dirname(File.expand_path(__FILE__)), 'setup.rb')
+require 'tkextlib/tkimg/setup.rb'
 
 # TkPackage.require('img::ico', '1.3')
 TkPackage.require('img::ico')
+
+module Tk
+  module Img
+    module ICO
+      def self.package_version
+	begin
+	  TkPackage.require('img::ico')
+	rescue
+	  ''
+	end
+      end
+    end
+  end
+end
diff --git a/ext/tk/lib/tkextlib/tkimg/jpeg.rb b/ext/tk/lib/tkextlib/tkimg/jpeg.rb
index 7b4df8c050..eac39083bc 100644
--- a/ext/tk/lib/tkextlib/tkimg/jpeg.rb
+++ b/ext/tk/lib/tkextlib/tkimg/jpeg.rb
@@ -8,7 +8,21 @@ require 'tk'
 require 'tkextlib/setup.rb'
 
 # call setup script
-require File.join(File.dirname(File.expand_path(__FILE__)), 'setup.rb')
+require 'tkextlib/tkimg/setup.rb'
 
 # TkPackage.require('img::jpeg', '1.3')
 TkPackage.require('img::jpeg')
+
+module Tk
+  module Img
+    module JPEG
+      def self.package_version
+	begin
+	  TkPackage.require('img::jpeg')
+	rescue
+	  ''
+	end
+      end
+    end
+  end
+end
diff --git a/ext/tk/lib/tkextlib/tkimg/pcx.rb b/ext/tk/lib/tkextlib/tkimg/pcx.rb
index 4486ba2449..26311e5984 100644
--- a/ext/tk/lib/tkextlib/tkimg/pcx.rb
+++ b/ext/tk/lib/tkextlib/tkimg/pcx.rb
@@ -8,7 +8,21 @@ require 'tk'
 require 'tkextlib/setup.rb'
 
 # call setup script
-require File.join(File.dirname(File.expand_path(__FILE__)), 'setup.rb')
+require 'tkextlib/tkimg/setup.rb'
 
 # TkPackage.require('img::pcx', '1.3')
 TkPackage.require('img::pcx')
+
+module Tk
+  module Img
+    module PCX
+      def self.package_version
+	begin
+	  TkPackage.require('img::pcx')
+	rescue
+	  ''
+	end
+      end
+    end
+  end
+end
diff --git a/ext/tk/lib/tkextlib/tkimg/pixmap.rb b/ext/tk/lib/tkextlib/tkimg/pixmap.rb
index 0c18c71408..ae8d3201cb 100644
--- a/ext/tk/lib/tkextlib/tkimg/pixmap.rb
+++ b/ext/tk/lib/tkextlib/tkimg/pixmap.rb
@@ -8,12 +8,30 @@ require 'tk'
 require 'tkextlib/setup.rb'
 
 # call setup script
-require File.join(File.dirname(File.expand_path(__FILE__)), 'setup.rb')
+require 'tkextlib/tkimg/setup.rb'
 
 # TkPackage.require('img::pixmap', '1.3')
 TkPackage.require('img::pixmap')
 
+module Tk
+  module Img
+    module PIXMAP
+      def self.package_version
+	begin
+	  TkPackage.require('img::pixmap')
+	rescue
+	  ''
+	end
+      end
+    end
+  end
+end
+
 class TkPixmapImage<TkImage
+  def self.version
+    Tk::Img::PIXMAP.version
+  end
+
   def initialize(*args)
     @type = 'pixmap'
     super
diff --git a/ext/tk/lib/tkextlib/tkimg/png.rb b/ext/tk/lib/tkextlib/tkimg/png.rb
index 275035f47e..acdd8c536f 100644
--- a/ext/tk/lib/tkextlib/tkimg/png.rb
+++ b/ext/tk/lib/tkextlib/tkimg/png.rb
@@ -8,7 +8,21 @@ require 'tk'
 require 'tkextlib/setup.rb'
 
 # call setup script
-require File.join(File.dirname(File.expand_path(__FILE__)), 'setup.rb')
+require 'tkextlib/tkimg/setup.rb'
 
 # TkPackage.require('img::png', '1.3')
 TkPackage.require('img::png')
+
+module Tk
+  module Img
+    module PNG
+      def self.package_version
+	begin
+	  TkPackage.require('img::png')
+	rescue
+	  ''
+	end
+      end
+    end
+  end
+end
diff --git a/ext/tk/lib/tkextlib/tkimg/ppm.rb b/ext/tk/lib/tkextlib/tkimg/ppm.rb
index 730978b281..f15bdb9f18 100644
--- a/ext/tk/lib/tkextlib/tkimg/ppm.rb
+++ b/ext/tk/lib/tkextlib/tkimg/ppm.rb
@@ -8,7 +8,21 @@ require 'tk'
 require 'tkextlib/setup.rb'
 
 # call setup script
-require File.join(File.dirname(File.expand_path(__FILE__)), 'setup.rb')
+require 'tkextlib/tkimg/setup.rb'
 
 # TkPackage.require('img::ppm', '1.3')
 TkPackage.require('img::ppm')
+
+module Tk
+  module Img
+    module PPM
+      def self.package_version
+	begin
+	  TkPackage.require('img::ppm')
+	rescue
+	  ''
+	end
+      end
+    end
+  end
+end
diff --git a/ext/tk/lib/tkextlib/tkimg/ps.rb b/ext/tk/lib/tkextlib/tkimg/ps.rb
index edfb8dd783..7c5cab2a4f 100644
--- a/ext/tk/lib/tkextlib/tkimg/ps.rb
+++ b/ext/tk/lib/tkextlib/tkimg/ps.rb
@@ -8,7 +8,21 @@ require 'tk'
 require 'tkextlib/setup.rb'
 
 # call setup script
-require File.join(File.dirname(File.expand_path(__FILE__)), 'setup.rb')
+require 'tkextlib/tkimg/setup.rb'
 
 # TkPackage.require('img::ps', '1.3')
 TkPackage.require('img::ps')
+
+module Tk
+  module Img
+    module PS
+      def self.package_version
+	begin
+	  TkPackage.require('img::ps')
+	rescue
+	  ''
+	end
+      end
+    end
+  end
+end
diff --git a/ext/tk/lib/tkextlib/tkimg/sgi.rb b/ext/tk/lib/tkextlib/tkimg/sgi.rb
index 9dcfa614b0..1cdf60e64c 100644
--- a/ext/tk/lib/tkextlib/tkimg/sgi.rb
+++ b/ext/tk/lib/tkextlib/tkimg/sgi.rb
@@ -8,7 +8,21 @@ require 'tk'
 require 'tkextlib/setup.rb'
 
 # call setup script
-require File.join(File.dirname(File.expand_path(__FILE__)), 'setup.rb')
+require 'tkextlib/tkimg/setup.rb'
 
 # TkPackage.require('img::sgi', '1.3')
 TkPackage.require('img::sgi')
+
+module Tk
+  module Img
+    module SGI
+      def self.package_version
+	begin
+	  TkPackage.require('img::sgi')
+	rescue
+	  ''
+	end
+      end
+    end
+  end
+end
diff --git a/ext/tk/lib/tkextlib/tkimg/sun.rb b/ext/tk/lib/tkextlib/tkimg/sun.rb
index 4ada9c7ff1..88f9a44656 100644
--- a/ext/tk/lib/tkextlib/tkimg/sun.rb
+++ b/ext/tk/lib/tkextlib/tkimg/sun.rb
@@ -8,7 +8,21 @@ require 'tk'
 require 'tkextlib/setup.rb'
 
 # call setup script
-require File.join(File.dirname(File.expand_path(__FILE__)), 'setup.rb')
+require 'tkextlib/tkimg/setup.rb'
 
 # TkPackage.require('img::sun', '1.3')
 TkPackage.require('img::sun')
+
+module Tk
+  module Img
+    module SUN
+      def self.package_version
+	begin
+	  TkPackage.require('img::sun')
+	rescue
+	  ''
+	end
+      end
+    end
+  end
+end
diff --git a/ext/tk/lib/tkextlib/tkimg/tga.rb b/ext/tk/lib/tkextlib/tkimg/tga.rb
index 221ebe5db1..c4068a729c 100644
--- a/ext/tk/lib/tkextlib/tkimg/tga.rb
+++ b/ext/tk/lib/tkextlib/tkimg/tga.rb
@@ -8,7 +8,21 @@ require 'tk'
 require 'tkextlib/setup.rb'
 
 # call setup script
-require File.join(File.dirname(File.expand_path(__FILE__)), 'setup.rb')
+require 'tkextlib/tkimg/setup.rb'
 
 # TkPackage.require('img::tga', '1.3')
 TkPackage.require('img::tga')
+
+module Tk
+  module Img
+    module TGA
+      def self.package_version
+	begin
+	  TkPackage.require('img::tga')
+	rescue
+	  ''
+	end
+      end
+    end
+  end
+end
diff --git a/ext/tk/lib/tkextlib/tkimg/tiff.rb b/ext/tk/lib/tkextlib/tkimg/tiff.rb
index 1c7e940843..529999ef2d 100644
--- a/ext/tk/lib/tkextlib/tkimg/tiff.rb
+++ b/ext/tk/lib/tkextlib/tkimg/tiff.rb
@@ -8,7 +8,21 @@ require 'tk'
 require 'tkextlib/setup.rb'
 
 # call setup script
-require File.join(File.dirname(File.expand_path(__FILE__)), 'setup.rb')
+require 'tkextlib/tkimg/setup.rb'
 
 # TkPackage.require('img::tiff', '1.3')
 TkPackage.require('img::tiff')
+
+module Tk
+  module Img
+    module TIFF
+      def self.package_version
+	begin
+	  TkPackage.require('img::tiff')
+	rescue
+	  ''
+	end
+      end
+    end
+  end
+end
diff --git a/ext/tk/lib/tkextlib/tkimg/window.rb b/ext/tk/lib/tkextlib/tkimg/window.rb
index 056aa8f3cf..229445dd46 100644
--- a/ext/tk/lib/tkextlib/tkimg/window.rb
+++ b/ext/tk/lib/tkextlib/tkimg/window.rb
@@ -8,7 +8,21 @@ require 'tk'
 require 'tkextlib/setup.rb'
 
 # call setup script
-require File.join(File.dirname(File.expand_path(__FILE__)), 'setup.rb')
+require 'tkextlib/tkimg/setup.rb'
 
 # TkPackage.require('img::window', '1.3')
 TkPackage.require('img::window')
+
+module Tk
+  module Img
+    module WINDOW
+      def self.package_version
+	begin
+	  TkPackage.require('img::window')
+	rescue
+	  ''
+	end
+      end
+    end
+  end
+end
diff --git a/ext/tk/lib/tkextlib/tkimg/xbm.rb b/ext/tk/lib/tkextlib/tkimg/xbm.rb
index 80010c77de..3b680d9b59 100644
--- a/ext/tk/lib/tkextlib/tkimg/xbm.rb
+++ b/ext/tk/lib/tkextlib/tkimg/xbm.rb
@@ -8,7 +8,21 @@ require 'tk'
 require 'tkextlib/setup.rb'
 
 # call setup script
-require File.join(File.dirname(File.expand_path(__FILE__)), 'setup.rb')
+require 'tkextlib/tkimg/setup.rb'
 
 # TkPackage.require('img::xbm', '1.3')
 TkPackage.require('img::xbm')
+
+module Tk
+  module Img
+    module XBM
+      def self.package_version
+	begin
+	  TkPackage.require('img::xbm')
+	rescue
+	  ''
+	end
+      end
+    end
+  end
+end
diff --git a/ext/tk/lib/tkextlib/tkimg/xpm.rb b/ext/tk/lib/tkextlib/tkimg/xpm.rb
index 04d56287ef..eff1e3c2b6 100644
--- a/ext/tk/lib/tkextlib/tkimg/xpm.rb
+++ b/ext/tk/lib/tkextlib/tkimg/xpm.rb
@@ -8,7 +8,21 @@ require 'tk'
 require 'tkextlib/setup.rb'
 
 # call setup script
-require File.join(File.dirname(File.expand_path(__FILE__)), 'setup.rb')
+require 'tkextlib/tkimg/setup.rb'
 
 # TkPackage.require('img::xpm', '1.3')
 TkPackage.require('img::xpm')
+
+module Tk
+  module Img
+    module XPM
+      def self.package_version
+	begin
+	  TkPackage.require('img::xpm')
+	rescue
+	  ''
+	end
+      end
+    end
+  end
+end
diff --git a/ext/tk/lib/tkextlib/tktrans.rb b/ext/tk/lib/tkextlib/tktrans.rb
index 93bb338a9b..3236b53420 100644
--- a/ext/tk/lib/tkextlib/tktrans.rb
+++ b/ext/tk/lib/tkextlib/tktrans.rb
@@ -7,11 +7,8 @@ require 'tk'
 # call setup script for general 'tkextlib' libraries
 require 'tkextlib/setup.rb'
 
-# library directory
-dir = File.expand_path(__FILE__).sub(/#{File.extname(__FILE__)}$/, '')
-
 # call setup script
-require File.join(dir, 'setup.rb')
+require 'tkextlib/tktrans/setup.rb'
 
 # load library
-require File.join(dir, 'tktrans')
+require 'tkextlib/tktrans/tktrans')
diff --git a/ext/tk/lib/tkextlib/tktrans/tktrans.rb b/ext/tk/lib/tkextlib/tktrans/tktrans.rb
index fa5d7a2eae..2acdac7217 100644
--- a/ext/tk/lib/tkextlib/tktrans/tktrans.rb
+++ b/ext/tk/lib/tkextlib/tktrans/tktrans.rb
@@ -8,17 +8,23 @@ require 'tk'
 require 'tkextlib/setup.rb'
 
 # call setup script
-require File.join(File.dirname(File.expand_path(__FILE__)), 'setup.rb')
+require 'tkextlib/tktrans/setup.rb'
 
 TkPackage.require('tktrans') rescue Tk.load_tcllibrary('tktrans')
 
-class TkWindow
-  begin
-    TkTrans_VERSION = TkPackage.require('tktrans')
-  rescue
-    TkTrans_VERSION = nil
+module Tk
+  module TkTrans
+    def self.package_version
+      begin
+	TkPackage.require('tktrans')
+      rescue
+	''
+      end
+    end
   end
+end
 
+class TkWindow
   def tktrans_set_image(img)
     tk_send('tktrans::setwidget', @path, img)
     self
diff --git a/ext/tk/lib/tkextlib/treectrl.rb b/ext/tk/lib/tkextlib/treectrl.rb
index fb03283a8d..c8fba54a67 100644
--- a/ext/tk/lib/tkextlib/treectrl.rb
+++ b/ext/tk/lib/tkextlib/treectrl.rb
@@ -6,11 +6,8 @@
 # call setup script for general 'tkextlib' libraries
 require 'tkextlib/setup.rb'
 
-# library directory
-dir = File.expand_path(__FILE__).sub(/#{File.extname(__FILE__)}$/, '')
-
 # call setup script
-require File.join(dir, 'setup.rb')
+require 'tkextlib/treectrl/setup.rb'
 
 # load library
-require File.join(dir, 'tktreectrl')
+require 'tkextlib/treectrl/tktreectrl')
diff --git a/ext/tk/lib/tkextlib/treectrl/tktreectrl.rb b/ext/tk/lib/tkextlib/treectrl/tktreectrl.rb
index fb74b72c3b..4b5219e60b 100644
--- a/ext/tk/lib/tkextlib/treectrl/tktreectrl.rb
+++ b/ext/tk/lib/tkextlib/treectrl/tktreectrl.rb
@@ -5,16 +5,24 @@
 
 require 'tk'
 
+# call setup script for general 'tkextlib' libraries
+require 'tkextlib/setup.rb'
+
 # call setup script
-require File.join(File.dirname(File.expand_path(__FILE__)), 'setup.rb')
+require 'tkextlib/treectrl/setup.rb'
 
 # TkPackage.require('treectrl', '1.0')
-#TkPackage.require('treectrl')
+TkPackage.require('treectrl')
 
 module Tk
   class TreeCtrl_Widget < TkWindow
-    #VERSION =  TkPackage.require('treectrl', '1.0')
-    VERSION = TkPackage.require('treectrl')
+    def self.package_version
+      begin
+	TkPackage.require('treectrl')
+      rescue
+	''
+      end
+    end
 
     class NotifyEvent < TkUtil::CallbackSubst
     end
@@ -312,6 +320,12 @@ class Tk::TreeCtrl_Widget
   WidgetClassName = ''.freeze
   WidgetClassNames[WidgetClassName] = self
 
+  def install_bind(cmd, *args)
+    install_bind_for_event_class(Tk::TreeCtrl_Widget::NotifyEvent, cmd, *args)
+  end
+
+  #########################
+
   def create_self(keys)
     if keys and keys != None
       tk_call_without_enc('treectrl', @path, *hash_kv(keys, true))
diff --git a/ext/tk/lib/tkextlib/vu.rb b/ext/tk/lib/tkextlib/vu.rb
index 923b67ce4e..4d61243340 100644
--- a/ext/tk/lib/tkextlib/vu.rb
+++ b/ext/tk/lib/tkextlib/vu.rb
@@ -8,33 +8,34 @@ require 'tk'
 # call setup script for general 'tkextlib' libraries
 require 'tkextlib/setup.rb'
 
-# library directory
-dir = File.expand_path(__FILE__).sub(/#{File.extname(__FILE__)}$/, '')
-
 # call setup script
-require File.join(dir, 'setup.rb')
+require 'tkextlib/vu/setup.rb'
 
 # load package
 # TkPackage.require('vu', '2.1')
-#TkPackage.require('vu')
+TkPackage.require('vu')
 
 # autoload
 module Tk
   module Vu
-    # load package
-    # VERSION = TkPackage.require('vu', '2.1')
-    VERSION = TkPackage.require('vu')
+    def self.package_version
+      begin
+	TkPackage.require('vu')
+      rescue
+	''
+      end
+    end
 
-    dir = File.expand_path(__FILE__).sub(/#{File.extname(__FILE__)}$/, '')
+    ##########################################
 
-    autoload :Dial,          File.join(dir, 'dial')
+    autoload :Dial,          'tkextlib/vu/dial'
 
-    autoload :Pie,           File.join(dir, 'pie')
-    autoload :PieSlice,      File.join(dir, 'pie')
-    autoload :NamedPieSlice, File.join(dir, 'pie')
+    autoload :Pie,           'tkextlib/vu/pie'
+    autoload :PieSlice,      'tkextlib/vu/pie'
+    autoload :NamedPieSlice, 'tkextlib/vu/pie'
 
-    autoload :Spinbox,       File.join(dir, 'spinbox')
+    autoload :Spinbox,       'tkextlib/vu/spinbox'
 
-    autoload :Bargraph,      File.join(dir, 'bargraph')
+    autoload :Bargraph,      'tkextlib/vu/bargraph'
   end
 end
diff --git a/ext/tk/lib/tkextlib/vu/bargraph.rb b/ext/tk/lib/tkextlib/vu/bargraph.rb
index 1dbd49db28..3ac08a26a5 100644
--- a/ext/tk/lib/tkextlib/vu/bargraph.rb
+++ b/ext/tk/lib/tkextlib/vu/bargraph.rb
@@ -12,8 +12,9 @@ module Tk
   end
 end
 
+
 # call setup script  --  <libdir>/tkextlib/vu.rb
-require(File.dirname(File.expand_path(__FILE__)) + '.rb')
+require 'tkextlib/vu.rb'
 
 class Tk::Vu::Bargraph < TkWindow
   TkCommandNames = ['::vu::bargraph'.freeze].freeze
diff --git a/ext/tk/lib/tkextlib/vu/charts.rb b/ext/tk/lib/tkextlib/vu/charts.rb
index bf2a3075bd..594582d69b 100644
--- a/ext/tk/lib/tkextlib/vu/charts.rb
+++ b/ext/tk/lib/tkextlib/vu/charts.rb
@@ -6,7 +6,7 @@ require 'tk'
 require 'tk/canvas'
 
 # call setup script  --  <libdir>/tkextlib/vu.rb
-require(File.dirname(File.expand_path(__FILE__)) + '.rb')
+require 'tkextlib/vu.rb'
 
 module Tk
   module Vu
diff --git a/ext/tk/lib/tkextlib/vu/dial.rb b/ext/tk/lib/tkextlib/vu/dial.rb
index 4d5770a320..e675ceb2de 100644
--- a/ext/tk/lib/tkextlib/vu/dial.rb
+++ b/ext/tk/lib/tkextlib/vu/dial.rb
@@ -13,7 +13,7 @@ module Tk
 end
 
 # call setup script  --  <libdir>/tkextlib/vu.rb
-require(File.dirname(File.expand_path(__FILE__)) + '.rb')
+require 'tkextlib/vu.rb'
 
 # define module/class
 class Tk::Vu::Dial < TkWindow
diff --git a/ext/tk/lib/tkextlib/vu/pie.rb b/ext/tk/lib/tkextlib/vu/pie.rb
index 833039c9f2..cacca594e6 100644
--- a/ext/tk/lib/tkextlib/vu/pie.rb
+++ b/ext/tk/lib/tkextlib/vu/pie.rb
@@ -18,7 +18,7 @@ module Tk
 end
 
 # call setup script  --  <libdir>/tkextlib/vu.rb
-require(File.dirname(File.expand_path(__FILE__)) + '.rb')
+require 'tkextlib/vu.rb'
 
 module Tk::Vu::PieSliceConfigMethod
   include TkItemConfigMethod
@@ -46,7 +46,8 @@ class Tk::Vu::Pie < TkWindow
     if tag.kind_of?(Tk::Vu::PieSlice)
       tag.id
     else
-      tag
+      # tag
+      _get_eval_string(tag)
     end
   end
 
diff --git a/ext/tk/lib/tkextlib/vu/spinbox.rb b/ext/tk/lib/tkextlib/vu/spinbox.rb
index db2743613c..f586434138 100644
--- a/ext/tk/lib/tkextlib/vu/spinbox.rb
+++ b/ext/tk/lib/tkextlib/vu/spinbox.rb
@@ -9,7 +9,7 @@
 if (Tk::TK_MAJOR_VERSION < 8 || 
     (Tk::TK_MAJOR_VERSION == 8 && Tk::TK_MINOR_VERSION < 4))
   # call setup script  --  <libdir>/tkextlib/vu.rb
-  require(File.dirname(File.expand_path(__FILE__)) + '.rb')
+  require 'tkextlib/vu.rb'
 
   Tk.tk_call('namespace', 'import', '::vu::spinbox')
 end