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diff --git a/trunk/ext/tk/sample/demos-en/combo.rb b/trunk/ext/tk/sample/demos-en/combo.rb
new file mode 100644
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+++ b/trunk/ext/tk/sample/demos-en/combo.rb
@@ -0,0 +1,96 @@
+# combo.rb --
+#
+# This demonstration script creates several combobox widgets.
+#
+# based on "Id: combo.tcl,v 1.3 2007/12/13 15:27:07 dgp Exp"
+
+if defined?($combo_demo) && $combo_demo
+  $combo_demo.destroy 
+  $combo_demo = nil
+end
+
+$combo_demo = TkToplevel.new {|w|
+  title("Combobox Demonstration")
+  iconname("combo")
+  positionWindow(w)
+}
+
+base_frame = TkFrame.new($combo_demo).pack(:fill=>:both, :expand=>true)
+
+Ttk::Label.new(base_frame, :font=>$font, :wraplength=>'5i', :justify=>:left, 
+               :text=><<EOL).pack(:side=>:top, :fill=>:x)
+Three different combo-boxes are displayed below. \
+You can add characters to the first \
+one by pointing, clicking and typing, just as with an entry; pressing \
+Return will cause the current value to be added to the list that is \
+selectable from the drop-down list, and you can choose other values \
+by pressing the Down key, using the arrow keys to pick another one, \
+and pressing Return again. The second combo-box is fixed to a \
+particular value, and cannot be modified at all. The third one only \
+allows you to select values from its drop-down list of Australian \
+cities.
+EOL
+
+## variables
+firstValue  = TkVariable.new
+secondValue = TkVariable.new
+ozCity      = TkVariable.new
+
+## See Code / Dismiss buttons
+Ttk::Frame.new(base_frame) {|frame|
+  sep = Ttk::Separator.new(frame)
+  Tk.grid(sep, :columnspan=>4, :row=>0, :sticky=>'ew', :pady=>2)
+  TkGrid('x', 
+         Ttk::Button.new(frame, :text=>'See Variables', 
+                         :image=>$image['view'], :compound=>:left, 
+                         :command=>proc{
+                           showVars(base_frame, 
+                                    ['firstVariable', firstValue], 
+                                    ['secondVariable', secondValue], 
+                                    ['ozCity', ozCity])
+                         }), 
+         Ttk::Button.new(frame, :text=>'See Code', 
+                         :image=>$image['view'], :compound=>:left, 
+                         :command=>proc{showCode 'combo'}), 
+         Ttk::Button.new(frame, :text=>'Dismiss', 
+                         :image=>$image['delete'], :compound=>:left, 
+                         :command=>proc{
+                           $combo_demo.destroy
+                           $combo_demo = nil
+                         }), 
+         :padx=>4, :pady=>4)
+  grid_columnconfigure(0, :weight=>1)
+  pack(:side=>:bottom, :fill=>:x)
+}
+
+frame = Ttk::Frame.new(base_frame).pack(:fill=>:both, :expand=>true)
+
+australianCities = [
+  'Canberra', 'Sydney', 'Melbourne', 'Perth', 'Adelaide', 'Brisbane', 
+  'Hobart', 'Darwin', 'Alice Springs'
+]
+
+
+secondValue.value = 'unchangable'
+ozCity.value = 'Sydney'
+
+Tk.pack(Ttk::Labelframe.new(frame, :text=>'Fully Editable'){|f|
+          Ttk::Combobox.new(f, :textvariable=>firstValue){|b|
+            b.bind('Return', '%W'){|w|
+              w.values <<= w.value unless w.values.include?(w.value)
+            }
+          }.pack(:pady=>5, :padx=>10)
+        }, 
+
+        Ttk::LabelFrame.new(frame, :text=>'Disabled'){|f|
+          Ttk::Combobox.new(f, :textvariable=>secondValue, :state=>:disabled) .
+            pack(:pady=>5, :padx=>10)
+        }, 
+
+        Ttk::LabelFrame.new(frame, :text=>'Defined List Only'){|f|
+          Ttk::Combobox.new(f, :textvariable=>ozCity, :state=>:readonly, 
+                            :values=>australianCities) .
+            pack(:pady=>5, :padx=>10)
+        }, 
+
+        :side=>:top, :pady=>5, :padx=>10)