1 Copyright (c) 1997-1998 Jan Nijtmans, and possibly others. 2 Copyright (c) 1998 Nick Ing-Simmons. 3 All rights reserved. This package believed to be free software; you can 4 redistribute it and/or modify it under the same terms as Perl itself. 5 6 This module contains one a collection of format handlers for Tk 7 written by Jan Nijtmans, adapted for perl/Tk by Nick Ing-Simmons. 8 9 It can be used in combination with Tk800.005 or later. 10 11 The "zlib" library must already be installed. 12 The "png" library is bundled with this module as libpng directory. 13 If you don't already have libpng then you can install it from there, 14 but this process is not automated. 15 16 More info about the PNG format (and sources) can be found via 17 http://www.wco.com/~png/ 18 19 Valid format specifiers for reading photo's: 20 "png" 21 22 Valid format specifiers for writing photo's: 23 "png Author <name> Title <title> Description ....." 24 Each pair of arguments will add a named text chunk to the file. 25 26 27 THANKS TO 28 29 Jan Nijtmans 30 CMG (Computer Management Group) Arnhem 31 email: nijtmans@worldaccess.nl (private) 32 Jan.Nijtmans@cmg.nl (work) 33 url: http://www.worldaccess.nl/~nijtmans/