December 2002
Intermediate to advanced
1088 pages
192h 4m
English
Content preview from ActionScript for Flash MX: The Definitive Guide, Second Edition
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Appendix C
APPENDIX C
Backward Compatibility and
Player Build Updates
Flash allows you to publish .swf files in formats that are compatible with previous
versions of the Player (via File
➝ Publish Settings ➝ Flash ➝ Version). By the time
you read this, the majority of users will have at least version 6 of the Flash Player, but
you may prefer to author for Flash Player 5 or 4 instead, such as when deploying to
handheld devices that don’t yet support Flash Player 6. Even if you are authoring
exclusively for Flash 6, this appendix will help you avoid using deprecated Action-
Script and bring you up to speed on the preferred methods in Flash 6. Furthermore,
it will help you understand or upgrade legacy code that you may encounter.
See capabilities.version, getVersion(), and $version in the Language
Reference for details on detecting the version of the Flash Player at
runtime. See http://www.moock.org/webdesign/flash/detection/moockfpi
for a version detection script that runs in the browser.
When authoring for Flash 4 or 5, use the deprecated techniques (i.e., those that are
outdated, but supported for backward compatibility) listed in Table C-1 (under
“Flash 4 Versus Flash 5 (and Later)” in this appendix). See also “Using Flash MX
ActionScript with older versions of Flash” under “Understanding ...
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