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: Backward Compatibility and Player Build Updates
As a rule, the new objects, classes, statements, and operators introduced in Flash 6
(as listed in the Preface) cannot be used when exporting to Flash 5 format. Three
exceptions are the switch statement and the strict equality and inequality operators
(
=== and !==), which are all available when exporting from the Flash MX authoring
tool to Flash 5 format. When a movie is set to export as version 5, the Flash MX
Output window reports any incompatibility warnings at export time.
Player Build Updates
The following sections describe changes and fixes introduced by minor versions of
the Flash Player.
Updates to Flash Player 6, Build 65
As this book was going to press (November 2002), Macromedia released Build 65 of
Flash Player 6 (Flash Player 6.0.65.0). The following list summarizes the main fea-
tures of the new build:
Windowless mode
Implemented for Netscape for Windows and Mac OS X, in addition to Internet
Explorer for Windows. See the
WMODE attribute in Appendix H.
Improved ActionScript performance
Variable registers are now used to speed up variable access, which generally
results in faster ActionScript execution times. The improved performance is par-
ticularly noticeable in FUI components.
Customization of HTTP headers
HTTP ...
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