Paul,

I believe the policy file being referred to is the crossdomain.xml file.
Here's a technote for you on the subject, in case you're not familiar:
http://www.adobe.com/cfusion/knowledgebase/index.cfm?id=tn_14213.

After you get up to speed on cross-domain policy files, you'll want to check
out
http://livedocs.macromedia.com/labs/as3preview/langref/index.html?flash/syst
em/LoaderContext.html&flash/system/class-list.html

I think the following excerpts pertains to your question:

"When loading images (JPEG, GIF, or PNG) instead of SWF files, there is no
need to specify a SecurityDomain or an application domain, because those
concepts are meaningful only for SWF files. Instead, you have only one
decision to make: do you need programmatic access to the pixels of the
loaded image? If so, see the checkPolicyFile property."

>From the checkPolicyFile documentation:

"Set this flag to true when you are loading an image (JPEG, GIF, or PNG)
from outside the calling SWF file's own domain, and you expect to need
access to the content of that image from ActionScript. Examples of accessing
image content include referencing the Loader.content property to obtain a
Bitmap object, and calling the BitmapData.draw() method to obtain a copy of
the loaded image's pixels"

Hope that helps!

-tom

-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Paul Neave
Sent: Friday, July 21, 2006 9:06 AM
To: Flashcoders
Subject: [Flashcoders] AS3, BitmapData and domain security

Hi group,
I've only just discovered that in Flash 8 you can't .draw() a loaded
image into a BitmapData object if the image was loaded from another
domain. I've search about and found you can .draw() a SWF which uses
System.security.allowDomain but there's no way to .draw() an image
JPG, GIF, PNG etc when loaded across domains.

This is very annoying, but apparently "...this will be fixed in FP9;
you will be able to use policy files to permit such things." said
Deneb Meketa:
http://www.kaourantin.net/2005/12/dynamically-loading-bitmaps-with.html

Can someone explain how to use the policy file to permit .draw()ing
cross-domain in AS3/FP9?

Thanks buckets,
Paul.
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