I use code based on the examples Client7z and Console with 7z.dll to extract, compress and delete files from/to 7z archives. Is these an example available to rename files in a 7z archive without using the latest 7z.exe that supports this feature.
0 0 - Copy data and properties from archive
0 1 - Copy data from archive, request new properties
1 0 - that combination is unused now
1 1 - Request new data and new properties
indexInArchive = -1 if there is no item in archive, or if it doesn't matter.
I checked your suggestion with success. Thank you for your fast advise.