From: "C. Dagnon" <c-soc-rubyforum@...>
Date: 2009-05-20T00:35:34+09:00
Subject: Re: TkPhotoImage.copy always gives "too many colors" Error

Thanks a lot, Hidetoshi!

For anyone still following this thread the solution is:

  composite.write( 'filename.jpg', :format => :jpeg )

I had somehow assumed that we were dealing with objects, internal state 
and memory, but we're not.  Even though I created the composite image 
with :format, Ruby/Tk only sends the immediate command to tk, so write() 
also needs the format parameter.  I was additionally confused because 
the Perl/Tk book I have as a reference also has a table stating which 
image formats do not need format specified in the calls, and JPEG is one 
of those which doesn't - there at least.


Next question is: how do I give Hidetoshi NAGAI a bump? Do we have any 
star ratings here? 8)


Cryptic non-documented APIs (along with the code) seem to be Ruby's 
trademark :(  RDoc rarely counts, unfortunately.

-Chris
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