Doug Turner wrote:
...
> Wrong!  There are many many examples of classes implementing
> THREADSAFE_ISUPPORTS but the class is not.  Until we have the concept of
> co-classes, the only think that QueryInterface'ing for the ID
> NS_ISTHREADSAFE_IID call tell you is that the ISUPPORTS is threadsafe
> (coclass can give class information).
...

And we do now have something coclass-like. nsIClassInfo snuck in
before the xpcdom landing. Mike Shaver even wrote a doc...
http://lxr.mozilla.org/seamonkey/source/xpcom/doc/nsIClassInfo-overview.html

John.

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