From: andy@... (Andrew Hunt)
Date: 2000-07-13T02:46:46+00:00
Subject: [ruby-talk:03956] Tk PhotoImage options

Hi all,

I'm trying to write a simple Ruby/Tk app that displays a GIF file
using TkPhotoImage.  The GIF needs to be scaled down to a particular
size, as a "thumbnail."

The Tk doc says TkPhotoImage->copy can take an option of 'shrink', 'subsample', 
'to' and 'from' and yet *none* of these seem to work with Ruby/Tk.

Given:

		new_img = TkPhotoImage.new('file'=> filename)
		image_widget.copy(new_img, 'subsample' => "8 8")

I get the error message:

  	tk.rb:548: in '_invoke': unrecognized option "-subsample 8 8 ": 
  	must be -from, -shrink, -subsample, -to, or -zoom

I've tried "8,8", "8", nil, '', and a few other combos, but it just
doesn't seem to like it.

Any hints?

Thanks...

/\ndy


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Andrew Hunt, The Pragmatic Programmers, LLC.
Innovative Object-Oriented Software Development
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Our New Book: "The Pragmatic Programmer" Published by Addison-Wesley Oct 1999
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