remove marshal/gtk/kconv

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@518 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ext/tk/sample/tktimer.rb

@@ -0,0 +1,50 @@
+#!/usr/local/bin/ruby
+# This script generates a counter with start and stop buttons.
+
+require "tk"
+$label = TkLabel.new {
+  text '0.00'
+  relief 'raised'
+  width 10
+  pack('side'=>'bottom', 'fill'=>'both')
+}
+
+TkButton.new {
+  text 'Start'
+  command proc {
+    if $stopped
+      $stopped = FALSE
+      tick
+    end
+  }
+  pack('side'=>'left','fill'=>'both','expand'=>'yes')
+}
+TkButton.new {
+  text 'Stop'
+  command proc{
+    exit if $stopped
+    $stopped = TRUE
+  }
+  pack('side'=>'right','fill'=>'both','expand'=>'yes')
+}
+
+$seconds=0
+$hundredths=0
+$stopped=TRUE
+
+def tick
+  if $stopped then return end
+  Tk.after 50, proc{tick}
+  $hundredths+=5
+  if $hundredths >= 100
+    $hundredths=0
+    $seconds+=1
+  end
+  $label.text format("%d.%02d", $seconds, $hundredths)
+end
+
+root = Tk.root
+root.bind "Control-c", proc{root.destroy}
+root.bind "Control-q", proc{root.destroy}
+Tk.root.focus
+Tk.mainloop