According to how to compres a Folder uses lzma sdk? in the 7zip SDK, we have two levels:
LZMA compression
- (over stream or buffer);- .
7z archive format
- The .7z
archive format does handle archive/directory features.
Found a very good 7zip C++ wrapper
on https://bitbucket.org/cmcnab/sevenzip which is a very good example and works great!