ActionScript for Flash MX: The Definitive Guide, Second Edition

MovieClip._parent Property

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ActionScript Language Reference

Unlike its cousin onLoad(), whose callback form has limited use, onUnload() works identi-

cally whether defined as a callback or in an onClipEvent(unLoad) block. However, the

usual differences between callback handlers and onClipEvent() handlers still apply:

• When the contents of

mc are unloaded, the onUnload() callback is lost, but the

onClipEvent(unload) handler is retained.

• When

mc is duplicated via duplicateMovieClip(), the onUnload() callback is not copied

to the duplicate clip, but the onClipEvent(unLoad) handler is.

Usage

Perhaps surprisingly, in Flash 6, onUnload() is not triggered when the Flash Player is closed

or when

_level0 (the main movie) is removed from the Player. Macromedia may address

this idiosyncrasy in the future.

See Also

MovieClip.onLoad(), MovieClip.unloadMovie()

MovieClip._parent Property

a reference to the host clip or movie containing this clip

Flash 4

read-only

mc._parent

Description

The _parent property stores a reference to the clip object upon whose timeline mc resides.

Main movies don’t support the

_parent property because they are at the top level (conve-

niently referred to as

_root). References to _root._parent return undefined. The _parent

property gives us the powerful ability to manipulate clips ...