diff --git a/ext/tk/lib/tk.rb b/ext/tk/lib/tk.rb
index 7de4cd5f24..6bae4d8f42 100644
--- a/ext/tk/lib/tk.rb
+++ b/ext/tk/lib/tk.rb
@@ -4830,16 +4830,18 @@ class TkPanedWindow<TkWindow
     fail ArgumentError, "no window in arguments" unless keys
     if keys && keys.kind_of?(Hash)
       fail ArgumentError, "no window in arguments" if args == []
-      args += hash_kv(keys)
+      args = args.collect{|w| w.epath}
+      args.push(hash_kv(keys))
     else
       args.push(keys) if keys
+      args = args.collect{|w| w.epath}
     end
     tk_send('add', *args)
     self
   end
 
   def forget(win, *wins)
-    tk_send('forget', win, *wins)
+    tk_send('forget', win.epath, *(wins.collect{|w| w.epath}))
     self
   end
   alias del forget
@@ -4879,14 +4881,14 @@ class TkPanedWindow<TkWindow
   end
 
   def panecget(win, key)
-    tk_tcl2ruby(tk_send('panecget', win, "-#{key}"))
+    tk_tcl2ruby(tk_send('panecget', win.epath, "-#{key}"))
   end
 
   def paneconfigure(win, key, value=nil)
     if key.kind_of? Hash
-      tk_send('paneconfigure', win, *hash_kv(key))
+      tk_send('paneconfigure', win.epath, *hash_kv(key))
     else
-      tk_send('paneconfigure', win, "-#{key}", value)
+      tk_send('paneconfigure', win.epath, "-#{key}", value)
     end
     self
   end
@@ -4894,11 +4896,12 @@ class TkPanedWindow<TkWindow
 
   def paneconfiginfo(win, key=nil)
     if key
-      conf = tk_split_list(tk_send('paneconfigure', win, "-#{key}"))
+      conf = tk_split_list(tk_send('paneconfigure', win.epath, "-#{key}"))
       conf[0] = conf[0][1..-1]
       conf
     else
-      tk_split_simplelist(tk_send('paneconfigure', win)).collect{|conflist|
+      tk_split_simplelist(tk_send('paneconfigure', 
+				  win.epath)).collect{|conflist|
 	conf = tk_split_simplelist(conflist)
 	conf[0] = conf[0][1..-1]
 	if conf[3]
diff --git a/ext/tk/lib/tkcanvas.rb b/ext/tk/lib/tkcanvas.rb
index 32b5ac7af8..ccb02c0564 100644
--- a/ext/tk/lib/tkcanvas.rb
+++ b/ext/tk/lib/tkcanvas.rb
@@ -862,6 +862,13 @@ end
 class TkcWindow<TkcItem
   CItemTypeToClass['window'] = self
   def create_self(*args)
+    keys = args.pop
+    if keys && keys.kind_of?(Hash)
+      keys = _symbolkey2str(keys)
+      win = keys['window']
+      keys['window'] = win.epath if win.kind_of?(TkWindow)
+    end
+    args.push(keys) if keys
     tk_call(@path, 'create', 'window', *args)
   end
   private :create_self
diff --git a/ext/tk/lib/tktext.rb b/ext/tk/lib/tktext.rb
index 44dc6cc3b8..2d37fb8c05 100644
--- a/ext/tk/lib/tktext.rb
+++ b/ext/tk/lib/tktext.rb
@@ -499,8 +499,41 @@ class TkText<TkTextWin
       index.configure(slot, value)
     else
       if slot.kind_of? Hash
+	slot = _symbolkey2str(slot)
+	win = slot['window']
+	slot['window'] = win.epath if win.kind_of?(TkWindow)
+	if slot['create']
+	  p_create = slot['create']
+	  if p_create.kind_of? Proc
+	    slot['create'] = install_cmd(proc{
+					   id = p_create.call
+					   if id.kind_of?(TkWindow)
+					     id.epath
+					   else
+					     id
+					   end
+					 })
+	  end
+	end
 	tk_send('window', 'configure', index, *hash_kv(slot))
       else
+	if slot == 'window' || slot == :window
+	  id = value 
+	  value = id.epath if id.kind_of?(TkWindow)
+	end
+	if slot == 'create' || slot == :create
+	  p_create = value
+	  if p_create.kind_of? Proc
+	    value = install_cmd(proc{
+				  id = p_create.call
+				  if id.kind_of?(TkWindow)
+				    id.epath
+				  else
+				    id
+				  end
+				})
+	  end
+	end
 	tk_send('window', 'configure', index, "-#{slot}", value)
       end
     end
@@ -1177,10 +1210,18 @@ class TkTextWindow<TkObject
     @index = @path.path
     keys = _symbolkey2str(keys)
     @id = keys['window']
+    keys['window'] = @id.epath if @id.kind_of?(TkWindow)
     if keys['create']
       @p_create = keys['create']
       if @p_create.kind_of? Proc
-	keys['create'] = install_cmd(proc{@id = @p_create.call; @id.path})
+	keys['create'] = install_cmd(proc{
+				       @id = @p_create.call
+				       if @id.kind_of?(TkWindow)
+					 @id.epath
+				       else
+					 @id
+				       end
+				     })
       end
     end
     tk_call @t.path, 'window', 'create', @index, *hash_kv(keys)
@@ -1200,16 +1241,21 @@ class TkTextWindow<TkObject
   def configure(slot, value=None)
     if slot.kind_of? Hash
       slot = _symbolkey2str(slot)
-      @id = slot['window'] if slot['window']
+      if slot['window']
+	@id = slot['window'] 
+	slot['window'] = @id.epath if @id.kind_of?(TkWindow)
+      end
       if slot['create']
-	self.create=value
-	slot['create']=nil
+	self.create=slot.delete('create')
       end
       if slot.size > 0
 	tk_call(@t.path, 'window', 'configure', @index, *hash_kv(slot))
       end
     else
-      @id = value if slot == 'window' || slot == :window
+      if slot == 'window' || slot == :window
+	@id = value 
+	value = @id.epath if @id.kind_of?(TkWindow)
+      end
       if slot == 'create' || slot == :create
 	self.create=value
       else
@@ -1228,8 +1274,9 @@ class TkTextWindow<TkObject
   end
 
   def window=(value)
-    tk_call @t.path, 'window', 'configure', @index, '-window', value
     @id = value
+    value = @id.epath if @id.kind_of?(TkWindow)
+    tk_call @t.path, 'window', 'configure', @index, '-window', value
   end
 
   def create
@@ -1239,7 +1286,14 @@ class TkTextWindow<TkObject
   def create=(value)
     @p_create = value
     if @p_create.kind_of? Proc
-      value = install_cmd(proc{@id = @p_create.call})
+      value = install_cmd(proc{
+			    @id = @p_create.call
+			    if @id.kind_of?(TkWindow)
+			      @id.epath
+			    else
+			      @id
+			    end
+			  })
     end
     tk_call @t.path, 'window', 'configure', @index, '-create', value
   end