I have the old 8book O'Reily Serious "The X Resources" in my bookshelf bought about 15 years ago.
Is there any book which is explaining the new technologies and X11 extensions like XDnD, Xinerama, XCursor, XRandR, XRender, XIM + Input Methods etc. maybe with a chapter (but not more) of GTK and QT. I'm not even asking for Compiz and other state of the art stuff.
I can't believe that the chaos in the man pages is the only documentation there is.