Since Eclipse Galileo, the documentation for SWT has been assimilated into the
Eclipse Help pages. This is nice if you want to look something up on the net, but is a royal pain in the ass if you want to hook up your IDE to the SWT Javadocs.
It annoyed me so much that I
grabbed the source from CVS, compiled it, generated the Javadocs and bundled them in Jars for you, me and the rest of the world to use.