1 files changed, 29 insertions, 0 deletions
diff --git a/ext/tk/lib/tkscrollbox.rb b/ext/tk/lib/tkscrollbox.rb
new file mode 100644
index 0000000000..6236430491
--- /dev/null
+++ b/ext/tk/lib/tkscrollbox.rb
@@ -0,0 +1,29 @@
+#
+#		tkscrollbox.rb - Tk Listbox with Scrollbar
+#                                 as an example of Composite Widget
+#			$Date$
+#			by Yukihiro Matsumoto <[email protected]>
+
+require 'tk.rb'
+
+class TkScrollbox<TkListbox
+  include TkComposite
+  def initialize_composite(keys=nil)
+    list = TkListbox.new(@frame)
+    scroll = TkScrollbar.new(@frame)
+    @path = list.path
+
+    list.configure 'yscroll', scroll.path+" set"
+    list.pack 'side'=>'left','fill'=>'both','expand'=>'yes'
+    scroll.configure 'command', list.path+" yview"
+    scroll.pack 'side'=>'right','fill'=>'y'
+
+    delegate('DEFAULT', list)
+    delegate('foreground', list)
+    delegate('background', list, scroll)
+    delegate('borderwidth', @frame)
+    delegate('relief', @frame)
+
+    configure keys if keys
+  end
+end