Tk horizontal scrollbar infinite loop

Chris1 · 24 February 2006 05:38

Hi,

I'm having a bizarre problem with Ruby/Tk. I'm running OS X 10.4 with
the standard ruby:

ruby 1.8.2 (2004-12-25) [powerpc-darwin8.0]

The code below is the simplest code that reproduces the problem.
Namely, when run, I see my window and scrollbar flicker rapidly,
apparently between two different sizes.

···

----
require 'tk'

top = TkRoot.new
f = TkFrame.new(top)
sb = TkScrollbar.new(f,'orient'=>'horizontal')
sb.pack('side'=>'bottom')
f.pack
Tk.mainloop
--

All of this is required. It works fine:
  * without the intermediate frame, f
  * without orient=>horizontal
  * without side=>bottom

Any help would be much appreciated. Please e-mail any replies to me at
calfeld@math.utah.edu as I do not read this group regularly.

Thank you,
Chris

Hidetoshi_NAGAI · 24 February 2006 06:10

Message-ID: <1140759195.727301.113060@z34g2000cwc.googlegroups.com>

The code below is the simplest code that reproduces the problem.
Namely, when run, I see my window and scrollbar flicker rapidly,
apparently between two different sizes.

Hmmm.... It may be the trouble on your Tcl/Tk.
At least, I couldn't reproduce your problem on my linux box.
Could you report me the result of the following Tcl/Tk script?

···

From: "Chris" <calfeld@math.utah.edu>
Subject: Tk horizontal scrollbar infinite loop
Date: Fri, 24 Feb 2006 14:38:32 +0900
------------------------------------------
frame .f
scrollbar .f.sb -orient horizontal
pack .f.sb
pack .f
------------------------------------------
--
Hidetoshi NAGAI (nagai@ai.kyutech.ac.jp)

Chris1 · 24 February 2006 15:13

Hmmm.... It may be the trouble on your Tcl/Tk.
At least, I couldn't reproduce your problem on my linux box.
Could you report me the result of the following Tcl/Tk script?
------------------------------------------
frame .f
scrollbar .f.sb -orient horizontal
pack .f.sb
pack .f
------------------------------------------
--

That works fine. The problem only shows up in Ruby/Tk.

c.

Chris1 · 24 February 2006 16:06

I still have no idea what the problem is but I found a work around. The following code runs fine:

···

----
require 'tk'

root = TkRoot.new
f = TkFrame.new(root)
sb = TkScrollbar.new(f,'orient'=>'horizontal')
sb.pack('side'=>'bottom','fill'=>'x','pady'=>'1')
f.pack('side'=>'bottom','fill'=>'x')

Tk.mainloop
---

That is, adding 'pady'=>'1' fixes the problem. Note that 'pady'=>'0' results in problem behavior.

I have also tried it on 1.8.4 and it appears there as well.
ruby 1.8.4 (2005-12-24) [powerpc-darwin8.5.0]

Assistance in tracking down the bug is still appreciated.

c.

On Fri, 24 Feb 2006, Hidetoshi NAGAI wrote:

From: "Chris" <calfeld@math.utah.edu>
Subject: Tk horizontal scrollbar infinite loop
Date: Fri, 24 Feb 2006 14:38:32 +0900
Message-ID: <1140759195.727301.113060@z34g2000cwc.googlegroups.com>

The code below is the simplest code that reproduces the problem.
Namely, when run, I see my window and scrollbar flicker rapidly,
apparently between two different sizes.

Hmmm.... It may be the trouble on your Tcl/Tk.
At least, I couldn't reproduce your problem on my linux box.
Could you report me the result of the following Tcl/Tk script?
------------------------------------------
frame .f
scrollbar .f.sb -orient horizontal
pack .f.sb
pack .f
------------------------------------------
--
Hidetoshi NAGAI (nagai@ai.kyutech.ac.jp)

Hidetoshi_NAGAI · 24 February 2006 21:53

Message-ID: <Pine.GSO.4.64.0602240903120.25152@sunfish.math.utah.edu>

I have also tried it on 1.8.4 and it appears there as well.
ruby 1.8.4 (2005-12-24) [powerpc-darwin8.5.0]

Do you mean that 1.8.4 has no problem? Or still has the problem?
# I'm very sorry that I'm poor at English.

If 1.8.4 doesn't have the problem, the bug may depend on
the following change.

···

From: Chris Alfeld <calfeld@math.utah.edu>
Subject: Re: Tk horizontal scrollbar infinite loop
Date: Sat, 25 Feb 2006 01:06:27 +0900
-------------------------------------------------------
Wed Nov 2 19:03:06 2005 Hidetoshi NAGAI <nagai@ai.kyutech.ac.jp>

        * ext/tcltklib/tcltklib.c (ip_rbUpdateObjCmd,
          ip_rb_threadUpdateObjCmd): passed improper flags to
          DoOneEvent().
-------------------------------------------------------

Anyway, if :pady=>1 fixes the problem, the bug may depend on
'update' step.
Could you try the followings?
-----<test 1>------------------------------------------
require 'tk'

f = TkFrame.new
sb = TkScrollbar.new(f, :orient=>:horizontal)
sb.pack(:side=>:bottom, :fill=>:x)
Tk.update_idletasks # <--- add this
f.pack(:side=>:bottom, :fill=>:x)

Tk.mainloop
-------------------------------------------------------
-----<test 2>------------------------------------------
require 'tk'

evloop = Thread.new{Tk.mainloop}

f = TkFrame.new
sb = TkScrollbar.new(f, :orient=>:horizontal)
sb.pack(:side=>:bottom, :fill=>:x)
f.pack(:side=>:bottom, :fill=>:x)

evloop.join
-------------------------------------------------------
--
Hidetoshi NAGAI (nagai@ai.kyutech.ac.jp)

Chris1 · 25 February 2006 15:48

Do you mean that 1.8.4 has no problem? Or still has the problem?

1.8.4 still has the problem.

Both of the tests below have the problem.

Thanks,
c.

···

Could you try the followings?
-----<test 1>------------------------------------------
require 'tk'

f = TkFrame.new
sb = TkScrollbar.new(f, :orient=>:horizontal)
sb.pack(:side=>:bottom, :fill=>:x)
Tk.update_idletasks # <--- add this
f.pack(:side=>:bottom, :fill=>:x)

Tk.mainloop
-------------------------------------------------------
-----<test 2>------------------------------------------
require 'tk'

evloop = Thread.new{Tk.mainloop}

f = TkFrame.new
sb = TkScrollbar.new(f, :orient=>:horizontal)
sb.pack(:side=>:bottom, :fill=>:x)
f.pack(:side=>:bottom, :fill=>:x)

evloop.join
-------------------------------------------------------
--
Hidetoshi NAGAI (nagai@ai.kyutech.ac.jp)

Hidetoshi_NAGAI · 25 February 2006 17:38

Message-ID: <Pine.GSO.4.64.0602250847520.28404@sunfish.math.utah.edu>

1.8.4 still has the problem.
Both of the tests below have the problem.

Hmmm... That is a bad news.
Well, what message do you get from the following on 1.8.4?

···

From: Chris Alfeld <calfeld@math.utah.edu>
Subject: Re: Tk horizontal scrollbar infinite loop
Date: Sun, 26 Feb 2006 00:48:22 +0900
---------------------------------------------------
require 'tk'

r = Tk.root
f = TkFrame.new
sb = TkScrollbar.new(f, :orient=>:horizontal)

p ['a',
   [[r.winfo_reqwidth,r.winfo_reqheight],
   [r.winfo_width,r.winfo_height]],
   [[f.winfo_reqwidth,f.winfo_reqheight],
   [f.winfo_width,f.winfo_height]],
   [[sb.winfo_reqwidth,sb.winfo_reqheight],
   [sb.winfo_width,sb.winfo_height]]
  ]

sb.pack(:side=>:bottom, :fill=>:x)

p ['b',
   [[r.winfo_reqwidth,r.winfo_reqheight],
   [r.winfo_width,r.winfo_height]],
   [[f.winfo_reqwidth,f.winfo_reqheight],
   [f.winfo_width,f.winfo_height]],
   [[sb.winfo_reqwidth,sb.winfo_reqheight],
   [sb.winfo_width,sb.winfo_height]]
  ]

Tk.update

p ['c',
   [[r.winfo_reqwidth,r.winfo_reqheight],
   [r.winfo_width,r.winfo_height]],
   [[f.winfo_reqwidth,f.winfo_reqheight],
   [f.winfo_width,f.winfo_height]],
   [[sb.winfo_reqwidth,sb.winfo_reqheight],
   [sb.winfo_width,sb.winfo_height]]
  ]

f.pack(:side=>:bottom, :fill=>:x)

p ['d',
   [[r.winfo_reqwidth,r.winfo_reqheight],
   [r.winfo_width,r.winfo_height]],
   [[f.winfo_reqwidth,f.winfo_reqheight],
   [f.winfo_width,f.winfo_height]],
   [[sb.winfo_reqwidth,sb.winfo_reqheight],
   [sb.winfo_width,sb.winfo_height]]
  ]

Tk.update

p ['e',
   [[r.winfo_reqwidth,r.winfo_reqheight],
   [r.winfo_width,r.winfo_height]],
   [[f.winfo_reqwidth,f.winfo_reqheight],
   [f.winfo_width,f.winfo_height]],
   [[sb.winfo_reqwidth,sb.winfo_reqheight],
   [sb.winfo_width,sb.winfo_height]]
  ]

Tk.after(1000){
p ['f',
   [[r.winfo_reqwidth,r.winfo_reqheight],
   [r.winfo_width,r.winfo_height]],
   [[f.winfo_reqwidth,f.winfo_reqheight],
   [f.winfo_width,f.winfo_height]],
   [[sb.winfo_reqwidth,sb.winfo_reqheight],
   [sb.winfo_width,sb.winfo_height]]
  ]
}

Tk.mainloop
---------------------------------------------------

My Linux box returns
------------------------------------------------------------------------
["a", [[200, 200], [1, 1]], [[1, 1], [1, 1]], [[2, 21], [1, 1]]]
["b", [[200, 200], [1, 1]], [[1, 1], [1, 1]], [[2, 21], [1, 1]]]
["c", [[200, 200], [200, 200]], [[2, 21], [1, 1]], [[2, 21], [1, 1]]]
["d", [[200, 200], [200, 200]], [[2, 21], [1, 1]], [[2, 21], [1, 1]]]
["e", [[42, 21], [42, 21]], [[42, 21], [42, 21]], [[42, 21], [42, 21]]]
["f", [[42, 21], [42, 21]], [[42, 21], [42, 21]], [[42, 21], [42, 21]]]
------------------------------------------------------------------------

When sb.pack(:side=>:bottom, :fill=>:x, :pady=>1), returns
------------------------------------------------------------------------
["a", [[200, 200], [1, 1]], [[1, 1], [1, 1]], [[2, 21], [1, 1]]]
["b", [[200, 200], [1, 1]], [[1, 1], [1, 1]], [[2, 21], [1, 1]]]
["c", [[200, 200], [200, 200]], [[2, 23], [1, 1]], [[2, 21], [1, 1]]]
["d", [[200, 200], [200, 200]], [[2, 23], [1, 1]], [[2, 21], [1, 1]]]
["e", [[42, 23], [42, 23]], [[42, 23], [42, 23]], [[42, 21], [42, 21]]]
["f", [[42, 23], [42, 23]], [[42, 23], [42, 23]], [[42, 21], [42, 21]]]
------------------------------------------------------------------------
--
Hidetoshi NAGAI (nagai@ai.kyutech.ac.jp)

Chris1 · 25 February 2006 21:05

Hmmm... That is a bad news.
Well, what message do you get from the following on 1.8.4?

I get

["a", [[200, 200], [1, 1]], [[1, 1], [1, 1]], [[4, 16], [1, 1]]]
["b", [[200, 200], [1, 1]], [[1, 1], [1, 1]], [[4, 16], [1, 1]]]
["c", [[200, 200], [200, 200]], [[4, 16], [1, 1]], [[4, 16], [1, 1]]]
["d", [[200, 200], [200, 200]], [[4, 16], [1, 1]], [[4, 16], [1, 1]]]

and then the problem starts and e and d never appear.

With :pady=>1 I get

["a", [[200, 200], [1, 1]], [[1, 1], [1, 1]], [[4, 16], [1, 1]]]
["b", [[200, 200], [1, 1]], [[1, 1], [1, 1]], [[4, 16], [1, 1]]]
["c", [[200, 200], [200, 200]], [[4, 18], [1, 1]], [[4, 16], [1, 1]]]
["d", [[200, 200], [200, 200]], [[4, 18], [1, 1]], [[4, 16], [1, 1]]]
["e", [[34, 18], [34, 18]], [[34, 18], [34, 18]], [[34, 16], [34, 16]]]
["f", [[34, 18], [34, 18]], [[34, 18], [34, 18]], [[34, 16], [34, 16]]]

···

--

My Ruby is using the TclTk Framework, that is, OS X's native scrollbar widget, which explains the different dimensions.

As far as I can tell, the problem only occurs when the scrollbar is on the bottom or top of the window. It occurs even if there are other widgets packed into the window as long as the scrollbar is at the top or bottom.

I have no problems with vertical scrollbars.

--

I ran

require 'tk'

f = TkFrame.new
sb = TkScrollbar.new(f, :orient=>:horizontal)
sb.pack(:side=>:bottom, :fill=>:x)
f.pack(:side=>:bottom, :fill=>:x)

Tk.mainloop

with '-r profile' for a while. The results are below.

Thanks for all your effort!

c.

^C % cumulative self time 99.42 97.59 0.22 97.81 0.21 98.02 0.02 98.04 0.01 98.05 0.01 98.06 0.01 98.07 0.01 98.08 0.01 98.09 0.01 98.10 0.01 98.11 0.01 98.12 0.01 98.13 0.01 98.14 0.00 98.14 0.00 98.14 0.00 98.14 0.00 98.14 0.00 98.14 0.00 98.14 0.00 98.14 0.00 98.14 0.00 98.14 0.00 98.14 0.00 98.14 0.00 98.14 0.00 98.14 0.00 98.14 0.00 98.14 0.00 98.14 0.00 98.14 0.00 98.14 0.00 98.14 0.00 98.14 0.00 98.14 0.00 98.14 0.00 98.14 0.00 98.14 0.00 98.14 0.00 98.14 0.00 98.14 0.00 98.14 0.00 98.14 0.00 98.14 0.00 98.14 0.00 98.14 0.00 98.14 0.00 98.14 0.00 98.14 0.00 98.14 0.00 98.14 0.00 98.14 0.00 98.14 0.00 98.14 0.00 98.14 0.00 98.14 0.00 98.14 0.00 98.14 0.00 98.14 0.00 98.14 0.00 98.14 0.00 98.14 0.00 98.14 0.00 98.14 0.00 98.14 0.00 98.14 0.00 98.14 0.00 98.14 0.00 98.14 0.00 98.14 0.00 98.14 0.00 98.14 0.00 98.14 0.00 98.14 0.00 98.14 0.00 98.14 0.00 98.14 0.00 98.14 0.00 98.14 0.00 98.14 0.00 98.14 0.00 98.14 0.00 98.14 0.00 98.14 0.00 98.14 0.00 98.14 0.00 98.14 0.00 98.14 0.00 98.14 0.00 98.14 0.00 98.14 0.00 98.14 0.00 98.14 0.00 98.14 0.00 98.14 0.00 98.14 0.00 98.14 0.00 98.14 0.00 98.14 0.00 98.14 0.00 98.14 0.00 98.14 0.00 98.14 0.00 98.14 0.00 98.14 0.00 98.14 0.00 98.14 0.00 98.14 0.00 98.14 0.00 98.14 0.00 98.14 0.00 98.14 0.00 98.14 0.00 98.14 0.00 98.14 0.00 98.14 0.00 98.14 0.00 98.14 0.00 98.14 0.00 98.14 0.00 98.14 0.00 98.14 0.00 98.14 0.00 98.14 0.00 98.14 0.00 98.14 0.00 98.14 0.00 98.14 0.00 98.14 0.00 98.14 0.00 98.14 0.00 98.14 0.00 98.14 0.00 98.14 0.00 98.16 self total
seconds seconds calls ms/call ms/call name
97.59 1 97590.00 97590.00 TclTkLib.mainloop
0.22 1 220.00 220.00 TclTkIp#initialize
0.21 12 17.50 54.17 Kernel.require
0.02 13 1.54 1.54 Module#included
0.01 14 0.71 0.71 Module#module_function
0.01 43 0.23 0.93 Array#each
0.01 17 0.59 0.59 Module#autoload
0.01 4 2.50 2.50 String#to_i
0.01 1 10.00 10.00 TkFrame#initialize
0.01 5 2.00 2.00 TkCore._tk_call_core
0.01 60 0.17 0.17 Kernel.freeze
0.01 102 0.10 0.10 Kernel.autoload
0.01 499 0.02 0.02 Module#method_added
0.01 1 10.00 10.00 TkComm.install_cmd
0.00 2 0.00 0.00 TkWindow#initialize
0.00 2 0.00 0.00 Method#arity
0.00 5 0.00 0.00 TkCore::Tk_OBJECT_TABLE#method_missing
0.00 3 0.00 0.00 TclTkIp#_invoke
0.00 1 0.00 10.00 Tk::Encoding.encoding_system
0.00 2 0.00 5.00 TkWindow#pack
0.00 1 0.00 0.00 TkScrollbar#create_self
0.00 1 0.00 0.00 String#length
0.00 1 0.00 0.00 Fixnum#>
0.00 5 0.00 0.00 TkUtil._conv_args
0.00 2 0.00 0.00 Hash#==
0.00 10 0.00 0.00 Kernel.extend
0.00 114 0.00 0.00 Hash#=
0.00 1 0.00 0.00 TkUtil::CallbackSubst#_setup_subst_table
0.00 9 0.00 0.00 String#+
0.00 3 0.00 0.00 TclTkIp#_toUTF8
0.00 1 0.00 0.00 Proc#new
0.00 6 0.00 0.00 Hash#delete
0.00 1 0.00 0.00 TkBindTag#initialize
0.00 1 0.00 0.00 Array#join
0.00 1 0.00 0.00 Proc#==
0.00 1 0.00 0.00 Hash#clear
0.00 3 0.00 0.00 Kernel.instance_eval
0.00 11 0.00 0.00 Array#push
0.00 1 0.00 0.00 TkObject#path
0.00 1 0.00 0.00 TkCore::Tk_OBJECT_TABLE#initialize
0.00 220 0.00 0.00 Kernel.singleton_method_added
0.00 12 0.00 0.00 TclTkIp#_invoke_without_enc
0.00 1 0.00 0.00 #<TclTkIp:0x586148>.get_cb_entry
0.00 2 0.00 0.00 TkConfigMethod.__conv_keyonly_opts
0.00 5 0.00 0.00 Kernel.__send__
0.00 2 0.00 0.00 TkPack.configure
0.00 5 0.00 0.00 Symbol#to_s
0.00 10 0.00 0.00 TclTkIp#_return_value
0.00 1 0.00 0.00 TkComm._curr_cmd_id
0.00 1 0.00 0.00 Hash#update
0.00 38 0.00 0.00 Module#const_set
0.00 1 0.00 0.00 TkWindow#create_self
0.00 2 0.00 0.00 String#split
0.00 2 0.00 0.00 #<TclTkIp:0x586148>.tk_windows
0.00 2 0.00 0.00 TkConfigMethod.__ruby2val_optkeys
0.00 2 0.00 0.00 #<TclTkIp:0x586148>.add_tk_procs
0.00 1 0.00 0.00 #<TclTkIp:0x586148>.__getip
0.00 5 0.00 0.00 TclTkIp#_ip_id_
0.00 2 0.00 0.00 TkObject#epath
0.00 4 0.00 0.00 String#succ!
0.00 4 0.00 0.00 TkCore.tk_call_without_enc
0.00 6 0.00 0.00 Kernel.method
0.00 6 0.00 0.00 Hash#
0.00 1 0.00 0.00 TclTkIp#_fromUTF8
0.00 9 0.00 0.00 Hash#key?
0.00 1 0.00 0.00 Proc#call
0.00 1 0.00 0.00 #<TclTkIp:0x586148>.tk_cmd_tbl
0.00 1 0.00 0.00 #<TclTkIp:0x586148>.init_ip_env
0.00 43 0.00 0.00 Module#private
0.00 2 0.00 0.00 Kernel.tainted?
0.00 1 0.00 0.00 Hash#has_key?
0.00 1 0.00 0.00 Array#size
0.00 2 0.00 0.00 TkUtil.hash_kv
0.00 1 0.00 0.00 Class#initialize
0.00 44 0.00 0.00 Fixnum#|
0.00 4 0.00 0.00 String#<<
0.00 5 0.00 0.00 TkCore._ip_invoke_core
0.00 6 0.00 0.00 Module#const_defined?
0.00 9 0.00 0.00 Hash#each
0.00 13 0.00 1.54 Module#include
0.00 6 0.00 0.00 TkComm._epath
0.00 6 0.00 0.00 Kernel.===
0.00 1 0.00 0.00 Module#attr_accessor
0.00 16 0.00 0.00 Array#
0.00 24 0.00 0.00 Class#inherited
0.00 13 0.00 0.00 Module#append_features
0.00 1 0.00 0.00 TclTkIp#__invoke
0.00 10 0.00 22.00 Class#new
0.00 10 0.00 0.00 Module#extended
0.00 4 0.00 0.00 Kernel.respond_to?
0.00 1 0.00 0.00 Enumerable.find
0.00 1 0.00 0.00 #<Class(TkCallbackEntry):2c2046>#initialize
0.00 2 0.00 0.00 TkTreatFont.__font_optkeys
0.00 1 0.00 0.00 TkComm._toUTF8
0.00 5 0.00 0.00 #<TclTkIp:0x586148>.tk_object_table
0.00 2 0.00 0.00 TkConfigMethod.__methodcall_optkeys
0.00 5 0.00 0.00 Hash#default
0.00 2 0.00 0.00 TkConfigMethod.__keyonly_optkeys
0.00 1 0.00 0.00 Kernel.==
0.00 3 0.00 3.33 TkKernel#new
0.00 4 0.00 0.00 Array#<<
0.00 1 0.00 0.00 Tk::Encoding.encoding=
0.00 13 0.00 0.00 Kernel.taint
0.00 1 0.00 0.00 TkComm._next_cmd_id
0.00 1 0.00 0.00 Module#freeze
0.00 2 0.00 0.00 Array#==
0.00 1 0.00 0.00 Exception#initialize
0.00 5 0.00 0.00 Kernel.class
0.00 1 0.00 10.00 TkCore.tk_call
0.00 3 0.00 0.00 Object#initialize
0.00 3 0.00 0.00 String#==
0.00 1 0.00 97590.00 TkCore.mainloop
0.00 4 0.00 0.00 Hash#empty?
0.00 1 0.00 0.00 c00000#<cb_entry:2bd6b8>.=
0.00 2 0.00 0.00 Module#private_class_method
0.00 1 0.00 0.00 Module#<
0.00 6 0.00 0.00 Kernel.proc
0.00 1 0.00 0.00 Exception#set_backtrace
0.00 1 0.00 0.00 Module#attr_reader
0.00 1 0.00 0.00 TkBindTag#new_by_name
0.00 2 0.00 0.00 TkUtil._symbolkey2str
0.00 5 0.00 0.00 String#to_s
0.00 1 0.00 0.00 #<TclTkIp:0x586148>.create_table
0.00 2 0.00 0.00 Array#pop
0.00 17 0.00 0.00 Fixnum#<<
0.00 1 0.00 0.00 TkUtil::CallbackSubst#_define_attribute_aliases
0.00 1 0.00 0.00 Exception#backtrace
0.00 16 0.00 0.00 Kernel.kind_of?
0.00 10 0.00 0.00 Module#extend_object
0.00 12 0.00 0.00 Fixnum#==
0.00 3 0.00 0.00 Regexp#===
0.00 2 0.00 0.00 TkComm.install_win
0.00 3 0.00 0.00 Hash#initialize
0.00 1 0.00 0.00 Array#collect
0.00 1 0.00 98160.00 #toplevel

----

Chris1 · 25 February 2006 21:23

I can generate the problem in wish as well. The previous test on wish did not use the -fill or -side arguments to pack, when I add them the same problem occurs.

I conclude that this is a Tcl/Tk Framework bug, not a Ruby/Tk bug.

···

--
frame .f
scrollbar .f.sb -orient horizontal
pack .f.sb -side bottom -fill x
pack .f -side bottom -fill x
--

Thanks for your time,
c.

Hidetoshi_NAGAI · 26 February 2006 04:47

Message-ID: <Pine.GSO.4.64.0602251420370.28800@sunfish.math.utah.edu>

I can generate the problem in wish as well. The previous test on wish did
not use the -fill or -side arguments to pack, when I add them the same
problem occurs.

I conclude that this is a Tcl/Tk Framework bug, not a Ruby/Tk bug.

That is an unfortunate situation for you.
However, That is a good news for Ruby/Tk.

···

From: Chris Alfeld <calfeld@math.utah.edu>
Subject: Re: Tk horizontal scrollbar infinite loop
Date: Sun, 26 Feb 2006 06:23:49 +0900
--
Hidetoshi NAGAI (nagai@ai.kyutech.ac.jp)

tony_summerfelt · 26 February 2006 18:00

i assume someone sent off the bug report to activestate? i imagine
they'd want to get that fixed
http://home.cogeco.ca/~tsummerfelt1
telnet://ventedspleen.dyndns.org

···

On Sun, 26 Feb 2006 13:47:03 +0900, you wrote:

I conclude that this is a Tcl/Tk Framework bug, not a Ruby/Tk bug.

That is an unfortunate situation for you.
However, That is a good news for Ruby/Tk.

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Tk horizontal scrollbar infinite loop

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