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ActionScript for Flash MX: The Definitive Guide, Second Edition
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ActionScript for Flash MX: The Definitive Guide, Second Edition

by Colin Moock
December 2002
Intermediate to advanced
1088 pages
192h 4m
English
O'Reilly Media, Inc.
Content preview from ActionScript for Flash MX: The Definitive Guide, Second Edition
MovieClip.onData () Event Handler
This is the Title of the Book, eMatter Edition
Copyright © 2007 O’Reilly & Associates, Inc. All rights reserved.
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ActionScript Language Reference
MovieClip.onData () Event Handler
handler executed when the clip receives variables, or a portion of a loaded movie
Flash 5; callback form introduced in Flash 6
mc.onData()
onClipEvent (data) {
statements
}
Description
The onData() event handler is the callback form (and more modern analogue) of the legacy
onClipEvent (data) event handler. The onData() handler executes when external data is
loaded into a movie clip. It can be triggered by two quite different circumstances, according
to the kind of data being loaded—either external variables, or a .swf or .jpg file. Note that as
a variable loader, the onData() event is made obsolete in Flash 6 by the LoadVars class’s
download monitoring methods. As a movie loader, the onData() event is (in my experience)
too buggy to use in Flash 5, though it appears to be working properly in Flash 6.0.29.0.
When we request a series of variables from a server using loadVariables(), we must wait for
them to load completely before using their information. When a movie clip receives the
end of a batch of loaded variables, the onData() event is triggered, telling us it’s safe to
execute code that relies on the variables.
For example, suppose we have a guest book movie in which visitors enter ...
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Publisher Resources

ISBN: 059600396XCatalog PageErrata