* (IMPORTANT BUG FIX) scan of event keywords doesn't work on recent

versions of Tck/Tk
* (bug fix) initialize error of instance variable on TkComposite
* (bug fix) initialize error on encoding-system on MultiTkIp
* (bug fix) trouble on destroying widgets
* (new) add JP and EN version of Ruby/Tk widget demos


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@4249 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ext/tk/sample/demos-jp/clrpick.rb

@@ -0,0 +1,74 @@
+#
+# widget demo prompts the user to select a color (called by 'widget')
+#
+
+# toplevel widget が存在すれば削除する
+if defined?($clrpick_demo) && $clrpick_demo
+  $clrpick_demo.destroy 
+  $clrpick_demo = nil
+end
+
+# demo 用の toplevel widget を生成
+$clrpick_demo = TkToplevel.new {|w|
+  title("Color Selection Dialogs")
+  iconname("colors")
+  positionWindow(w)
+}
+
+# label 生成
+TkLabel.new($clrpick_demo,'font'=>$font,'wraplength'=>'4i','justify'=>'left',
+	    'text'=>"以下のボタンを押して、このウィンドウ上にあるウィジェットの前景色と背景色を選択して下さい。").pack('side'=>'top')
+
+# frame 生成
+TkFrame.new($clrpick_demo) {|frame|
+  TkButton.new(frame) {
+    text '了解'
+    command proc{
+      tmppath = $clrpick_demo
+      $clrpick_demo = nil
+      tmppath.destroy
+    }
+  }.pack('side'=>'left', 'expand'=>'yes')
+
+  TkButton.new(frame) {
+    text 'コード参照'
+    command proc{showCode 'clrpick'}
+  }.pack('side'=>'left', 'expand'=>'yes')
+}.pack('side'=>'bottom', 'fill'=>'x', 'pady'=>'2m')
+
+# button 生成
+TkButton.new($clrpick_demo, 'text'=>'背景色を設定 ...') {|b|
+  command(proc{setColor $clrpick_demo, b, 'background', 
+	      ['background', 'highlightbackground']})
+  pack('side'=>'top', 'anchor'=>'c', 'pady'=>'2m')
+}
+
+TkButton.new($clrpick_demo, 'text'=>'前景色を設定 ...') {|b|
+  command(proc{setColor $clrpick_demo, b, 'foreground', ['foreground']})
+  pack('side'=>'top', 'anchor'=>'c', 'pady'=>'2m')
+}
+
+def setColor(w,button,name,options)
+  w.grab
+  initialColor = button[name]
+  color = Tk.chooseColor('title'=>"Choose a #{name} color", 'parent'=>w, 
+			 'initialcolor'=>initialColor)
+  if color != ""
+    setColor_helper(w,options,color)
+  end
+
+  w.grab('release')
+end
+
+def setColor_helper(w, options, color)
+  options.each{|opt|
+    begin
+      w[opt] = color
+    rescue
+    end
+  }
+  TkWinfo.children(w).each{|child|
+    setColor_helper child, options, color
+  }
+end
+