import

Hi.

Use the BitmapData's encode method and the PNGEncoderOptions class. Like this:

import flash.display.BitmapData;
import flash.display.DisplayObject;
import flash.display.PNGEncoderOptions;
import flash.geom.Rectangle;
import flash.net.FileReference;
import flash.utils.ByteArray;

function snapshot(target:DisplayObject, fileName:String):void
{
	var bitmapData:BitmapData = new BitmapData(target.width, target.height);
	var byteArray:ByteArray = new ByteArray();
	var fileReference:FileReference;
	
	bitmapData.draw(target);
	bitmapData.encode(new Rectangle(0, 0, bitmapData.width, bitmapData.height), new PNGEncoderOptions(), byteArray);
	fileReference = new FileReference();
	fileReference.save(byteArray, fileName);
}

snapshot(yourContainer, "capture_" + new Date().time + ".png");

Regards,
JC

that package is incorrect.  check the as3 api