2 files changed, 16 insertions, 0 deletions
diff --git a/ext/tk/lib/tkextlib/vu/bargraph.rb b/ext/tk/lib/tkextlib/vu/bargraph.rb
index 3ac08a26a..27ff3c7cd 100644
--- a/ext/tk/lib/tkextlib/vu/bargraph.rb
+++ b/ext/tk/lib/tkextlib/vu/bargraph.rb
@@ -28,6 +28,16 @@ class Tk::Vu::Bargraph < TkWindow
   end
   private :__boolval_optkeys
 
+  def __strval_optkeys
+    super() + [
+      'title', 
+      'barbackground', 'barcolor', 'barcolour', 
+      'tickcolor', 'tickcolour', 
+      'textcolor', 'textcolour', 
+    ]
+  end
+  private :__strval_optkeys
+
   def __listval_optkeys
     ['alabels', 'blabels']
   end
diff --git a/ext/tk/lib/tkextlib/vu/charts.rb b/ext/tk/lib/tkextlib/vu/charts.rb
index a578c6979..ee4298fa1 100644
--- a/ext/tk/lib/tkextlib/vu/charts.rb
+++ b/ext/tk/lib/tkextlib/vu/charts.rb
@@ -17,6 +17,12 @@ module Tk
       end
       private :__item_boolval_optkeys
 
+      def __item_strval_optkeys(id)
+        super(id) << 'bar' << 'color' << 'outline' << 
+          'fill' << 'scaleline' << 'stripline'
+      end
+      private :__item_strval_optkeys
+
       def __item_listval_optkeys(id)
         super(id) << 'values' << 'tags'
       end