Damian,
> How do I get a new movieClip to appear "inside" the
> masking arrangment?
Make sure the mask is also a movie clip, so that you can
give it an
instance name. Once named, it gives you convenient access to
all the
properties, methods, and events outlined in the MovieClip
class. Among the
events is one called setMask(), which, when invoked on a
given movie clip
instance, such as the one you loaded, allows you to mask it
with another.
If you're pulling from the Library
(MovieClip.attachMovie()), you'll be
fine, but if you're loading an external SWF
(MovieClip.loadMovie()), you'll
have to make sure the external SWF is fully loaded before you
reference any
of its class members.
http://www.quip.net/blog/2006/flash/how-to-tell-when-external-swf-loaded
David Stiller
Adobe Community Expert
Dev blog,
http://www.quip.net/blog/
"Luck is the residue of good design."