From fcbf63e62c627deae76c1b8cb8c0876c536ed811 Mon Sep 17 00:00:00 2001
From: Jari Vetoniemi <jari.vetoniemi@indooratlas.com>
Date: Mon, 16 Mar 2020 18:49:26 +0900
Subject: Fresh start

---
 jni/ruby/ext/tk/sample/tkmultilistbox.rb | 654 +++++++++++++++++++++++++++++++
 1 file changed, 654 insertions(+)
 create mode 100644 jni/ruby/ext/tk/sample/tkmultilistbox.rb

(limited to 'jni/ruby/ext/tk/sample/tkmultilistbox.rb')

diff --git a/jni/ruby/ext/tk/sample/tkmultilistbox.rb b/jni/ruby/ext/tk/sample/tkmultilistbox.rb
new file mode 100644
index 0000000..7791649
--- /dev/null
+++ b/jni/ruby/ext/tk/sample/tkmultilistbox.rb
@@ -0,0 +1,654 @@
+#
+# tkmultilistbox.rb : multiple listbox widget
+#                       by Hidetoshi NAGAI (nagai@ai.kyutech.ac.jp)
+#
+require 'tk'
+
+class TkMultiListbox < TkListbox
+  include TkComposite
+
+  #   lbox_height : height of listboxes (pixel)
+  #   title_info  : array [ [<title_string>,<init_width>], ... ]
+  #   keys        : hash {<option>=><value>, ... }
+  def initialize_composite(lbox_height, title_info, keys={})
+    # argument check
+    if (! title_info.kind_of? Array) or (title_info.size < 2)
+      raise
+    end
+
+    # decide total width
+    @width_total = 0
+    title_info.each{|title, width| @width_total += width.to_f}
+
+    # virtical scrollbar
+    @v_scroll = TkScrollbar.new(@frame, 'orient'=>'vertical')
+
+    # init arrays
+    @base_list = []
+    @rel_list   = []
+    @title_list = []
+    @lbox_list  = []
+    @hscr_list  = []
+
+    # rel-table of label=>index
+    @name_index = {}
+
+    # create base flames
+    @f_title = TkFrame.new(@frame, 'width'=>@width_total)
+    @f_lbox  = TkFrame.new(@frame,
+                           'width'=>@width_total, 'height'=>lbox_height)
+    @f_hscr  = TkFrame.new(@frame, 'width'=>@width_total,
+                           'height'=>@v_scroll.cget('width') +
+                                     2 * @v_scroll.cget('borderwidth'))
+
+    # dummy label to keep the hight of title space
+    TkLabel.new(@f_title, 'text'=>' ').pack
+
+    # create each listbox
+    sum = 0.0
+    @rel_list << sum/@width_total
+    title_info.each_with_index{|(label, width), idx|
+      # set relation between label and index
+      if @name_index.include?(label)
+        @name_index[label] << idx
+      else
+        @name_index[label] = [idx]
+      end
+
+      # calculate relative positioning
+      sum += width
+      @rel_list << sum/@width_total
+
+      # title field
+      f = TkFrame.new(@f_title, 'width'=>width)
+      base = [f]
+      @title_list << TkLabel.new(f, 'text'=>label).pack('fill'=>'x')
+      f.place('relx'=>@rel_list[idx], 'y'=>0, 'anchor'=>'nw', 'width'=>-6,
+              'relwidth'=>@rel_list[idx+1] - @rel_list[idx])
+
+      # listbox field
+      f = TkFrame.new(@f_lbox, 'width'=>width)
+      base << f
+      @lbox_list << TkListbox.new(f).pack('fill'=>'both', 'expand'=>true)
+      f.place('relx'=>@rel_list[idx], 'y'=>0, 'anchor'=>'nw', 'width'=>-4,
+              'relwidth'=>@rel_list[idx+1] - @rel_list[idx], 'relheight'=>1.0)
+
+      # scrollbar field
+      f = TkFrame.new(@f_hscr, 'width'=>width)
+      base << f
+      @hscr_list << TkScrollbar.new(f, 'orient'=>'horizontal') .
+                                              pack('fill'=>'x', 'anchor'=>'w')
+      f.place('relx'=>@rel_list[idx], 'y'=>0, 'anchor'=>'nw', 'width'=>-4,
+              'relwidth'=>@rel_list[idx+1] - @rel_list[idx])
+
+      @lbox_list[idx].xscrollcommand proc{|first, last|
+        @hscr_list[idx].set first, last
+      }
+      @hscr_list[idx].command proc{|*args| @lbox_list[idx].xview *args}
+
+      # add new base
+      @base_list << base
+    }
+
+    # create tab
+    @tab_list = [nil]
+    (1..(@rel_list.size - 2)).each{|idx|
+      tab = TkFrame.new(@f_title, 'cursor'=>'sb_h_double_arrow',
+                        'width'=>6, 'borderwidth'=>2, 'relief'=>'raised')
+      @tab_list << tab
+      tab.place('relx'=>@rel_list[idx], 'anchor'=>'ne', 'relheight'=>0.95)
+      tab.bind('Button-1',
+               proc{|x| @x = x; @frame_width = TkWinfo.width(@f_title).to_f},
+               '%X')
+      tab.bind('B1-Motion', proc{|x, idx| resize(x, idx.to_i)}, "%X #{idx}")
+    }
+
+    # set control procedure for virtical scroll
+    @lbox_list.each{|lbox|
+      lbox.yscrollcommand proc{|first, last|
+        @v_scroll.set first, last
+      }
+    }
+    @v_scroll.command proc{|*args| @lbox_list.each{|lbox| lbox.yview *args} }
+
+    # binding for listboxes
+    @mode = {}
+    @mode['browse']   = browse_mode_bindtag
+    @mode['single']   = single_mode_bindtag
+    @mode['extended'] = extended_mode_bindtag
+    @mode['multiple'] = multiple_mode_bindtag
+    @current_mode = 'browse'
+    @lbox_list.each{|l|
+      l.bind('Shift-Key-Left',
+             proc{|w| focus_shift(w, -1); Tk.callback_break}, '%W')
+      l.bind('Shift-Key-Right',
+             proc{|w| focus_shift(w, 1); Tk.callback_break}, '%W')
+
+      l.bind('Button-2', proc{|x, y|
+               @lbox_mark_x = x
+               @lbox_list.each{|lbox| lbox.scan_mark(x, y)}
+             }, '%x %y')
+      l.bind('B2-Motion', proc{|x, y|
+               @lbox_list.each{|lbox| lbox.scan_dragto(@lbox_mark_x, y)}
+               l.scan_dragto(x, y)
+             }, '%x %y')
+
+      l.bindtags(l.bindtags.unshift(@mode[@current_mode]))
+    }
+
+    # alignment
+    TkGrid.rowconfigure(@frame, 0, 'weight'=>0)
+    TkGrid.rowconfigure(@frame, 1, 'weight'=>1)
+    TkGrid.rowconfigure(@frame, 2, 'weight'=>0)
+    TkGrid.columnconfigure(@frame, 0, 'weight'=>1)
+    TkGrid.columnconfigure(@frame, 1, 'weight'=>0)
+    @v_scroll.grid('row'=>1, 'column'=>1, 'sticky'=>'ns')
+    @f_title.grid('row'=>0, 'column'=>0, 'sticky'=>'news')
+    @f_lbox.grid('row'=>1, 'column'=>0, 'sticky'=>'news')
+    @f_hscr.grid('row'=>2, 'column'=>0, 'sticky'=>'ew')
+
+    # binding for 'Configure' event
+    @frame.bind('Configure', proc{reconstruct})
+
+    # set default receiver of method calls
+    @path = @lbox_list[0].path
+
+    # configure options
+    keys = {} unless keys
+    keys = _symbolkey2str(keys)
+
+    # 'mode' option of listboxes
+    sel_mode = keys.delete('mode')
+    mode(sel_mode) if sel_mode
+
+    # 'scrollbarwidth' option == 'width' option of scrollbars
+    width = keys.delete('scrollbarwidth')
+    scrollbarwidth(width) if width
+
+    # options for listbox titles
+    title_font = keys.delete('titlefont')
+    title_fg = keys.delete('titleforeground')
+    title_bg = keys.delete('titlebackground')
+    if title_font or title_fg or title_bg
+      titleconfig(title_font, title_fg, title_bg)
+    end
+
+    # set receivers for configure methods
+    delegate('DEFAULT', *@lbox_list)
+    delegate('activebackground', @v_scroll, *@hscr_list)
+    delegate('troughcolor', @v_scroll, *@hscr_list)
+    delegate('repeatdelay', @v_scroll, *@hscr_list)
+    delegate('repeatinterval', @v_scroll, *@hscr_list)
+    delegate('borderwidth', @frame)
+    delegate('relief', @frame)
+
+    # configure
+    configure(keys) if keys.size > 0
+  end
+  private :initialize_composite
+
+  # set 'mode' option of listboxes
+  def mode(sel_mode)
+    @lbox_list.each{|l|
+      tags = l.bindtags
+      tags = tags - [ @mode[@current_mode] ]
+      l.bindtags(tags.unshift(@mode[sel_mode]))
+      @current_mode = sel_mode
+    }
+  end
+
+  # set scrollbar width
+  def scrollbarwidth(width)
+    @v_scroll['width'] = width
+    @hscr_list.each{|hscr| hscr['width'] = width}
+    @f_hscr['height'] = width + 2 * @v_scroll.cget('borderwidth')
+  end
+
+  # set options of titles
+  def titleconfig(font, fg, bg)
+    keys = {}
+    keys['font'] = font if font
+    keys['foreground'] = fg if fg
+    keys['background'] = bg if bg
+    @title_list.each{|label| label.configure(keys)}
+  end
+
+  # get label widgets of listbox titles
+  def titlelabels(*indices)
+    @title_list[*indices]
+  end
+
+  # get listbox widgets
+  def columns(*indices)
+    @lbox_list[*indices]
+  end
+
+  def activate(idx)
+    @lbox_list.each{|lbox| lbox.activate(idx)}
+  end
+
+  def bbox(idx)
+    @lbox_list.collect{|lbox| lbox.bbox(idx)}
+  end
+
+  def delete(*idx)
+    @lbox_list.collect{|lbox| lbox.delete(*idx)}
+  end
+
+  def get(*idx)
+    if idx.size == 1
+      @lbox_list.collect{|lbox| lbox.get(*idx)}
+    else
+      list = @lbox_list.collect{|lbox| lbox.get(*idx)}
+      result = []
+      list[0].each_with_index{|line, index|
+        result << list.collect{|lines| lines[index]}
+      }
+      result
+    end
+  end
+
+  def _line_array_to_hash(line)
+    result = {}
+    @name_index.each_pair{|label, indices|
+      if indices.size == 1
+        result[label] = line[indices[0]]
+      else
+        result[label] = indices.collect{|index| line[index]}
+      end
+    }
+    result
+  end
+  private :_line_array_to_hash
+
+  def get_by_hash(*idx)
+    get_result = get(*idx)
+    if idx.size == 1
+      _line_array_to_hash(get_result)
+    else
+      get_result.collect{|line| _line_array_to_hash(line)}
+    end
+  end
+
+  def insert(idx, *lines)
+    lbox_ins = []
+    (0..@lbox_list.size).each{lbox_ins << []}
+
+    lines.each{|line|
+      if line.kind_of? Hash
+        array = []
+        @name_index.each_pair{|label, indices|
+          if indices.size == 1
+            array[indices[0]] = line[label]
+          else
+            if line[label].kind_of? Array
+              indices.each_with_index{|index, num|
+                array[index] = line[label][num]
+              }
+            else
+              array[indices[0]] = line[label]
+            end
+          end
+        }
+        line = array
+      end
+
+      @name_index.each_pair{|label, indices|
+        if indices.size == 1
+          lbox_ins[indices[0]] << line[indices[0]]
+        else
+          indices.each{|index| lbox_ins[index] << line[index]}
+        end
+      }
+    }
+
+    @lbox_list.each_with_index{|lbox, index|
+      lbox.insert(idx, *lbox_ins[index]) if lbox_ins[index]
+    }
+  end
+
+  def selection_anchor(index)
+    @lbox_list.each{|lbox| lbox.selection_anchor(index)}
+  end
+
+  def selection_clear(first, last=None)
+    @lbox_list.each{|lbox| lbox.selection_clear(first, last=None)}
+  end
+
+  def selection_set(first, last=None)
+    @lbox_list.each{|lbox| lbox.selection_set(first, last=None)}
+  end
+
+  ###########################################
+  private
+
+  def reconstruct
+    (0..(@rel_list.size - 2)).each{|idx|
+      title, lbox, hscr = @base_list[idx]
+      title.place('relwidth'=>@rel_list[idx+1] - @rel_list[idx])
+      lbox.place('relwidth'=>@rel_list[idx+1] - @rel_list[idx],
+                 'relheight'=>1.0)
+      hscr.place('relwidth'=>@rel_list[idx+1] - @rel_list[idx])
+
+      tab = @tab_list[idx]
+      tab.place('relx'=>@rel_list[idx]) if tab
+    }
+  end
+
+  def resize(x, idx)
+    # adjustment of relative positioning
+    delta = (x - @x) / @frame_width
+    if delta < @rel_list[idx-1] - @rel_list[idx] + 0.02
+      delta = @rel_list[idx-1] - @rel_list[idx] + 0.02
+    elsif delta > @rel_list[idx+1] - @rel_list[idx] - 0.02
+      delta = @rel_list[idx+1] - @rel_list[idx] - 0.02
+    end
+    @rel_list[idx] += delta
+
+    # adjustment of leftside widget of the tab
+    title, lbox, hscr = @base_list[idx - 1]
+    title.place('relwidth'=>@rel_list[idx] - @rel_list[idx-1])
+    lbox.place('relwidth'=>@rel_list[idx] - @rel_list[idx-1], 'relheight'=>1.0)
+    hscr.place('relwidth'=>@rel_list[idx] - @rel_list[idx-1])
+
+    # adjustment of the tab position
+    @tab_list[idx].place('relx'=>@rel_list[idx])
+
+    # adjustment of rightside widget of the tab
+    title, lbox, hscr = @base_list[idx]
+    title.place('relwidth'=>@rel_list[idx+1] - @rel_list[idx],
+                'relx'=>@rel_list[idx])
+    lbox.place('relwidth'=>@rel_list[idx+1] - @rel_list[idx],
+               'relx'=>@rel_list[idx], 'relheight'=>1.0)
+    hscr.place('relwidth'=>@rel_list[idx+1] - @rel_list[idx],
+               'relx'=>@rel_list[idx])
+
+    # update reference position
+    @x = x
+  end
+
+  #################################
+  def browse_mode_bindtag
+    t = TkBindTag.new
+    t.bind('Button-1',
+           proc{|w, y| w.focus; select_line(w, w.nearest(y))}, '%W %y')
+    t.bind('B1-Motion', proc{|w, y| select_line(w, w.nearest(y))}, '%W %y')
+
+    t.bind('Shift-Button-1',
+           proc{|w, y| active_line(w, w.nearest(y))}, '%W %y')
+
+    t.bind('Key-Up', proc{|w| select_shift(w, -1)}, '%W')
+    t.bind('Key-Down', proc{|w| select_shift(w, 1)}, '%W')
+
+    t.bind('Control-Home', proc{|w| select_line(w, 0)}, '%W')
+    t.bind('Control-End', proc{|w| select_line(w, 'end')}, '%W')
+
+    t.bind('space', proc{|w| select_line(w, w.index('active').to_i)}, '%W')
+    t.bind('Select', proc{|w| select_line(w, w.index('active').to_i)}, '%W')
+    t.bind('Control-slash',
+           proc{|w| select_line(w, w.index('active').to_i)}, '%W')
+
+    t
+  end
+
+  ########################
+  def single_mode_bindtag
+    t = TkBindTag.new
+    t.bind('Button-1',
+           proc{|w, y| w.focus; select_only(w, w.nearest(y))}, '%W %y')
+    t.bind('ButtonRelease-1',
+           proc{|w, y| active_line(w, w.nearest(y))}, '%W %y')
+
+    t.bind('Shift-Button-1',
+           proc{|w, y| active_line(w, w.nearest(y))}, '%W %y')
+
+    t.bind('Key-Up', proc{|w| select_shift(w, -1)}, '%W')
+    t.bind('Key-Down', proc{|w| select_shift(w, 1)}, '%W')
+
+    t.bind('Control-Home', proc{|w| select_line(w, 0)}, '%W')
+    t.bind('Control-End', proc{|w| select_line(w, 'end')}, '%W')
+
+    t.bind('space', proc{|w| select_line(w, w.index('active').to_i)}, '%W')
+    t.bind('Select', proc{|w| select_line(w, w.index('active').to_i)}, '%W')
+    t.bind('Control-slash',
+           proc{|w| select_line(w, w.index('active').to_i)}, '%W')
+    t.bind('Control-backslash',
+           proc{@lbox_list.each{|l| l.selection_clear(0, 'end')}})
+
+    t
+  end
+
+  ########################
+  def extended_mode_bindtag
+    t = TkBindTag.new
+    t.bind('Button-1',
+           proc{|w, y| w.focus; select_only(w, w.nearest(y))}, '%W %y')
+    t.bind('B1-Motion', proc{|w, y| select_range(w, w.nearest(y))}, '%W %y')
+
+    t.bind('ButtonRelease-1',
+           proc{|w, y| active_line(w, w.nearest(y))}, '%W %y')
+
+    t.bind('Shift-Button-1',
+           proc{|w, y| select_range(w, w.nearest(y))}, '%W %y')
+    t.bind('Shift-B1-Motion',
+           proc{|w, y| select_range(w, w.nearest(y))}, '%W %y')
+
+    t.bind('Control-Button-1',
+           proc{|w, y| select_toggle(w, w.nearest(y))}, '%W %y')
+
+    t.bind('Control-B1-Motion',
+           proc{|w, y| select_drag(w, w.nearest(y))}, '%W %y')
+
+    t.bind('Key-Up', proc{|w| active_shift(w, -1)}, '%W')
+    t.bind('Key-Down', proc{|w| active_shift(w, 1)}, '%W')
+
+    t.bind('Shift-Up', proc{|w| select_expand(w, -1)}, '%W')
+    t.bind('Shift-Down', proc{|w| select_expand(w, 1)}, '%W')
+
+    t.bind('Control-Home', proc{|w| select_line2(w, 0)}, '%W')
+    t.bind('Control-End', proc{|w| select_line2(w, 'end')}, '%W')
+
+    t.bind('Control-Shift-Home', proc{|w| select_range(w, 0)}, '%W')
+    t.bind('Control-Shift-End', proc{|w| select_range(w, 'end')}, '%W')
+
+    t.bind('space', proc{|w| select_active(w)}, '%W')
+    t.bind('Select', proc{|w| select_active(w)}, '%W')
+    t.bind('Control-slash', proc{|w| select_all}, '%W')
+    t.bind('Control-backslash', proc{|w| clear_all}, '%W')
+
+    t
+  end
+
+  ########################
+  def multiple_mode_bindtag
+    t = TkBindTag.new
+    t.bind('Button-1',
+           proc{|w, y| w.focus; select_line3(w, w.nearest(y))}, '%W %y')
+    t.bind('ButtonRelease-1',
+           proc{|w, y| active_line(w, w.nearest(y))}, '%W %y')
+
+    t.bind('Key-Up', proc{|w| active_shift(w, -1)}, '%W')
+    t.bind('Key-Down', proc{|w| active_shift(w, 1)}, '%W')
+
+    t.bind('Control-Home', proc{|w| select_line2(w, 0)}, '%W')
+    t.bind('Control-End', proc{|w| select_line2(w, 'end')}, '%W')
+
+    t.bind('Control-Shift-Home', proc{|w| active_line(w, 0)}, '%W')
+    t.bind('Control-Shift-End', proc{|w| active_line(w, 'end')}, '%W')
+
+    t.bind('space', proc{|w| select_active(w)}, '%W')
+    t.bind('Select', proc{|w| select_active(w)}, '%W')
+    t.bind('Control-slash', proc{|w| select_all}, '%W')
+    t.bind('Control-backslash', proc{|w| clear_all}, '%W')
+
+    t
+  end
+
+  ########################
+  def active_line(w, idx)
+    @lbox_list.each{|l| l.activate(idx)}
+  end
+
+  def select_only(w, idx)
+    @lbox_list.each{|l|
+      l.selection_clear(0, 'end')
+      l.selection_anchor(idx)
+      l.selection_set('anchor')
+    }
+  end
+
+  def select_range(w, idx)
+    @lbox_list.each{|l|
+      l.selection_clear(0, 'end')
+      l.selection_set('anchor', idx)
+    }
+  end
+
+  def select_toggle(w, idx)
+    st = w.selection_includes(idx)
+    @lbox_list.each{|l|
+      l.selection_anchor(idx)
+      if st == 1
+        l.selection_clear(idx)
+      else
+        l.selection_set(idx)
+      end
+    }
+  end
+
+  def select_drag(w, idx)
+    st = w.selection_includes('anchor')
+    @lbox_list.each{|l|
+      if st == 1
+        l.selection_set('anchor', idx)
+      else
+        l.selection_clear('anchor', idx)
+      end
+    }
+  end
+
+  def select_line(w, idx)
+    @lbox_list.each{|l|
+      l.selection_clear(0, 'end')
+      l.activate(idx)
+      l.selection_anchor(idx)
+      l.selection_set('anchor')
+    }
+    w.selection_set('anchor')
+  end
+
+  def select_line2(w, idx)
+    @lbox_list.each{|l|
+      l.activate(idx)
+      l.selection_anchor(idx)
+      l.selection_set('anchor')
+    }
+  end
+
+  def select_line3(w, idx)
+    @lbox_list.each{|l|
+      l.selection_set(idx)
+    }
+  end
+
+  def select_active(w)
+    idx = l.activate(idx)
+    @lbox_list.each{|l|
+      l.selection_set(idx)
+    }
+  end
+
+  def select_expand(w, dir)
+    idx = w.index('active').to_i + dir
+    if idx < 0
+      idx = 0
+    elsif idx >= w.size
+      idx = w.size - 1
+    end
+    @lbox_list.each{|l|
+      l.activate(idx)
+      l.selection_set(idx)
+    }
+  end
+
+  def active_shift(w, dir)
+    idx = w.index('active').to_i + dir
+    if idx < 0
+      idx = 0
+    elsif idx >= w.size
+      idx = w.size - 1
+    end
+    @lbox_list.each{|l|
+      l.activate(idx)
+      l.selection_anchor(idx)
+    }
+  end
+
+  def select_shift(w, dir)
+    idx = w.index('anchor').to_i + dir
+    if idx < 0
+      idx = 0
+    elsif idx >= w.size
+      idx = w.size - 1
+    end
+    @lbox_list.each{|l|
+      l.selection_clear(0, 'end')
+      l.activate(idx)
+      l.selection_anchor(idx)
+      l.selection_set('anchor')
+    }
+  end
+
+  def select_all
+    @lbox_list.each{|l|
+      l.selection_set(0, 'end')
+    }
+  end
+
+  def clear_all
+    @lbox_list.each{|l|
+      l.selection_clear(0, 'end')
+    }
+  end
+
+  def focus_shift(w, dir)
+    idx = @lbox_list.index(w) + dir
+    return if idx < 0
+    return if idx >= @lbox_list.size
+    @lbox_list[idx].focus
+  end
+  ########################
+end
+
+################################################
+# test
+################################################
+if __FILE__ == $0
+  f = TkFrame.new(nil, 'width'=>300,
+                  'height'=>200).pack('fill'=>'both', 'expand'=>'true')
+  #f = TkFrame.new.pack('fill'=>'both', 'expand'=>'true')
+  l = TkMultiListbox.new(f, 150,
+                         [ ['L1', 100],
+                           ['L2', 200],
+                           ['L3', 50] ],
+                         'titlefont'=>'courier',
+                         'titleforeground'=>'yellow',
+                         'titlebackground'=>'navy'
+                         ).pack('fill'=>'both', 'expand'=>true)
+  l.insert('end', [1,2,3])
+  l.insert('end', [4,5,6])
+  l.insert('end', [4,5,6], [4,5,6])
+  l.insert('end', ['aaaaaaaaaaaaaaa','bbbbbbbbbbbbbb','ccccccccccccccccc'])
+  l.insert('end', [1,2,3])
+  l.insert('end', [4,5,6], [4,5,6])
+  l.insert('end', ['aaaaaaaaaaaaaaa','bbbbbbbbbbbbbb','ccccccccccccccccc'])
+  l.insert('end', [1,2,3])
+  l.insert('end', [4,5,6], [4,5,6])
+  l.insert('end', ['aaaaaaaaaaaaaaa','bbbbbbbbbbbbbb','ccccccccccccccccc'])
+  l.insert('end', [1,2,3])
+  l.insert('end', [4,5,6], [4,5,6])
+  p l.columns(1)
+  p l.columns(1..3)
+  p l.columns(1,2)
+  Tk.mainloop
+end
-- 
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