Working with MovieClip objects
Flash Player 9 and later, Adobe AIR 1.0 and
later
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When you publish a SWF file, Flash converts all movie clip symbol
instances on the Stage to MovieClip objects. You can make a movie
clip symbol available to ActionScript by giving it an instance name
in the Instance Name field of the Property inspector. When the SWF
file is created, Flash generates the code that creates the MovieClip
instance on the Stage and declares a variable using the instance
name. If you have named movie clips that are nested inside other named
movie clips, those child movie clips are treated like properties
of the parent movie clip—you can access the child movie clip using
dot syntax. For example, if a movie clip with the instance name
childClip
is
nested within another clip with the instance name
parentClip
,
you can make the child clip’s timeline animation play by calling
this code:
parentClip.childClip.play();
Note:
: Children instances placed on the Stage in
the Flash authoring tool cannot be accessed by code from within
the constructor of a parent instance since they have not been created
at that point in code execution. Before accessing the child, the
parent must instead either create the child instance by code or
delay access to a callback function that listens for the child to
dispatch its
Event.ADDED_TO_STAGE
event.
While some legacy methods and properties of the ActionScript
2.0 MovieClip class remain the same, others have changed. All properties
prefixed with an underscore have been renamed. For example,
_width
and
_height
properties
are now accessed as
width
and
height
,
while
_xscale
and
_yscale
are
now accessed as
scaleX
and
scaleY
.
For a complete list of the properties and methods of the MovieClip
class, consult the
ActionScript 3.0 Reference for the Adobe
Flash Platform
.
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