Replace LAYOUT_FILL_X and _Y by LAYOUT_FILL in example

examples/thread.rb

@@ -10,7 +10,7 @@ class ThreadedWindow < Fox::FXMainWindow
     super(app, "Threaded Widget Test", :opts => DECOR_ALL, width: 200, height: 500)
 
     @vframe = FXVerticalFrame.new(self,
-      FRAME_SUNKEN|FRAME_THICK|LAYOUT_FILL_X|LAYOUT_FILL_Y, :padding => 0) do |frame|
+      FRAME_SUNKEN|FRAME_THICK|LAYOUT_FILL, :padding => 0) do |frame|
       FXButton.new(frame, "Click to add", opts: FRAME_RAISED|FRAME_THICK|LAYOUT_FILL_X) do |button|
         button.connect(SEL_COMMAND, method(:on_button_clicked))
       end
@@ -19,7 +19,7 @@ class ThreadedWindow < Fox::FXMainWindow
 
   def on_button_clicked(sender, sel, ptr)
     FXHorizontalFrame.new(@vframe,
-      FRAME_SUNKEN|FRAME_THICK|LAYOUT_FILL_X|LAYOUT_FILL_Y, :padding => 10) do |frame|
+      FRAME_SUNKEN|FRAME_THICK|LAYOUT_FILL, :padding => 10) do |frame|
 
       label = FXLabel.new frame, "..."