Rating: 

quoting that:

"I own both O-O AS for flash 8, and O-O AS 3.0 these books logically parallel each other in their structure, which is very helpful in making the (sometimes frustrating) transition from as2 to as3. I'm confused about chapter 16 though. In the AS2 book, there seems to be a pretty clear step by step procedure for making a custom component from scratch, but in O-O AS3.0, I don't see how this explains actually how to build a component, although they use the word component alot, I don't see an actual explanation of publishing a custom component in as3. For instance, how do you tie into the component inspector with as3? how do you achieve live preview? no mention of componentShim etc.
is there any book or documentation out there that clearly explains developing custom components for Flash Actionscript 3.0 (the .fla based ones)?

edit:
btw, moock's book "essential actionscript 3.0" doesn't cover custom components either, stating
"this book does not cover component creation in actionscript. For information on components, see the appropriate product documentation"
well, a thorough scouring of adobe's site hasn't yet revealed any appropriate product documentation on component creation either.

... at least they pretended to cover components. Moock avoids it altogether. Since when did component development cease to be part of "Essential Actionscript"? Maybe if you're referring to designers and not developers ...