ActionScript for Flash MX: The Definitive Guide, Second Edition

This is the Title of the Book, eMatter Edition

Copyright © 2007 O’Reilly & Associates, Inc. All rights reserved.

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Chapter 2: Variables

Similarly, an HTML document’s <OBJECT> and <EMBED> tags can create variables in a

Flash movie, when the movie initially loads, via the

FlashVars parameter or a query

string. Variables passed to a Flash movie via

FlashVars or a query string must be

URL-encoded according to the rules described in the LoadVars class in the Language

Reference. The following code uses the

FlashVars parameter to create the variables

authorName and bookName with the values “Colin Moock” and “ASDG” on the main

timeline of a movie called main.swf:

<OBJECT classid="clsid:D27CDB6E-AE6D-11cf-96B8-444553540000"

CODEBASE="http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab"

WIDTH="550"

HEIGHT="400">

<PARAM NAME=movie VALUE="main.swf">

<PARAM NAME=FlashVars VALUE="authorName=Colin+Moock&bookName=ASDG">

<EMBED src="main.swf"

FlashVars="authorName=Colin+Moock&bookName=ASDG"

WIDTH="550"

HEIGHT="400"

TYPE="application/x-shockwave-flash"

PLUGINSPAGE="http://www.macromedia.com/go/getflashplayer">

</EMBED>

</OBJECT>

The FlashVars parameter requires Flash Player 6 or later and can pass a maximum of

63 KB of data to Flash. To pass data from HTML to earlier Flash Players, append the

parameters to the URL of the .swf filename, as shown in the following example. In

this case, the data transfer ...