From: Hidetoshi NAGAI <nagai@...>
Date: 2009-01-23T01:58:07+09:00
Subject: Re: Tk supports only GIF?

From: Albert Schlef <albertschlef@gmail.com>
Subject: Tk supports only GIF?
Date: Thu, 22 Jan 2009 21:58:54 +0900
Message-ID: <2b90a2596885e3d7547061766483c3ea@ruby-forum.com>
> I'm using Ubuntu.
> 
> Doesn't Tk support JPGs and PNGs out of the box?

If you talk about standard Tcl/Tk only, the answer is "YES"
(see "man n photo").
To support JPEGs, PNGs, and so on, Tcl/Tk needs "Img" extension.

# Possibly, ubuntu package name is "libtk-img".

When your Tcl/Tk has "Img" extension, Ruby/Tk also supports it.
Please call "require 'tkextlib/tkimg'", and you can use JPEGs and 
PNGs on your Ruby/Tk. 
-- 
Hidetoshi NAGAI (nagai@ai.kyutech.ac.jp)