1 files changed, 12 insertions, 1 deletions
diff --git a/ext/tk/lib/tkextlib/bwidget/combobox.rb b/ext/tk/lib/tkextlib/bwidget/combobox.rb
index 1c58a4ccb0..16143dfbc6 100644
--- a/ext/tk/lib/tkextlib/bwidget/combobox.rb
+++ b/ext/tk/lib/tkextlib/bwidget/combobox.rb
@@ -21,7 +21,12 @@ class Tk::BWidget::ComboBox
 
   TkCommandNames = ['ComboBox'.freeze].freeze
   WidgetClassName = 'ComboBox'.freeze
-  WidgetClassNames[WidgetClassName] = self
+  WidgetClassNames[WidgetClassName] ||= self
+
+  def __boolval_optkeys
+    super() << 'autocomplete' << 'autopost'
+  end
+  private :__boolval_optkeys
 
   def get_listbox(&b)
     win = window(tk_send_without_enc('getlistbox'))
@@ -35,6 +40,12 @@ class Tk::BWidget::ComboBox
     win
   end
 
+  def clear_value
+    tk_send_without_enc('clearvalue')
+    self
+  end
+  alias clearvalue clear_value
+
   def icursor(idx)
     tk_send_without_enc('icursor', idx)
   end