You can browse C++ class hierarchies from within Emacs by using Ebrowse.
This file documents Ebrowse, a C++ class browser for GNU Emacs.
|Overview||What is it and how does it work?|
|Generating browser files||How to process C++ source files|
|Loading a Tree||How to start browsing|
|Tree Buffers||Traversing class hierarchies|
|Member Buffers||Looking at member information|
|Tags-like Functions||Finding members from source files|
|GNU Free Documentation License||The license for this documentation.|
|Concept Index||An entry for each concept defined|
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(a) The FSF's Back-Cover Text is: “You have the freedom to copy and modify this GNU manual.”