From: Matt Maycock <ummaycoc@...>
Date: 2012-03-22T00:51:09+09:00
Subject: Ruby+Tcl/Tk+Cygwin

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Hello List!

So years ago -- in the before time, around 2008-2010 -- I set up cygwin
with ruby; I also installed active state tcl/tk.  I used this to provide
some simple programs for my employer, and everything worked fine.

Now, I update cygwin and ruby, and run the programs, and I get this:

/usr/lib/ruby/1.8/tk.rb:1127:in `initialize': tcltklib: fail to Tk_Init().
no display name and no $DISPLAY environment variable (RuntimeError)
        from /usr/lib/ruby/1.8/tk.rb:1127:in `new'
        from /usr/lib/ruby/1.8/tk.rb:1127

And examining the file doesn't help me understand what's going on.  To
reproduce this, I did the following:

  ruby -r tk -e ''

Is this a problem on the ruby side?  With ActiveTcl?  Should I use XWindows
somehow with cygwin since it's asking for Display?

 - Cygwin installed today
 - ruby version is ruby 1.8.7 (2012-02-08 patchlevel 358) [i386-cygwin]
 - ActiveState Tcl was installed using
"ActiveTcl8.5.11.1.295590-win32-ix86-threaded" installer.

Thank you kindly for any help, or even just saying "Hey, this sounds like
you wanna ask ActiveState or Cygwin instead..."

~Matthew

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Hello List!<div><br></div><div>So years ago -- in the before time, around 2=
008-2010 -- I set up cygwin with ruby; I also installed active state tcl/tk=
. =A0I used this to provide some simple programs for my employer, and every=
thing worked fine.</div>
<div><br></div><div>Now, I update cygwin and ruby, and run the programs, an=
d I get this:</div><div><br></div><div><div>/usr/lib/ruby/1.8/tk.rb:1127:in=
 `initialize&#39;: tcltklib: fail to Tk_Init(). no display name and no $DIS=
PLAY environment variable (RuntimeError)</div>
<div>=A0 =A0 =A0 =A0 from /usr/lib/ruby/1.8/tk.rb:1127:in `new&#39;</div><d=
iv>=A0 =A0 =A0 =A0 from /usr/lib/ruby/1.8/tk.rb:1127</div></div><div><br></=
div><div>And examining the file doesn&#39;t help me understand what&#39;s g=
oing on. =A0To reproduce this, I did the following:</div>
<div><br></div><div>=A0 ruby -r tk -e &#39;&#39;</div><div><br></div><div>I=
s this a problem on the ruby side? =A0With ActiveTcl? =A0Should I use XWind=
ows somehow with cygwin since it&#39;s asking for Display?</div><div><br></=
div>
<div>=A0- Cygwin installed today</div><div>=A0- ruby version is=A0ruby 1.8.=
7 (2012-02-08 patchlevel 358) [i386-cygwin]</div><div>=A0- ActiveState Tcl =
was installed using &quot;ActiveTcl8.5.11.1.295590-win32-ix86-threaded&quot=
; installer.</div>
<div><br></div><div>Thank you kindly for any help, or even just saying &quo=
t;Hey, this sounds like you wanna ask ActiveState or Cygwin instead...&quot=
;</div><div><br></div><div>~Matthew</div><div><br></div>

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