open's file in restrict mode

[DSP-ENP]

7zip always open file (open archive) without FILE_SHARE_READ/FILE_SHARE_WRITE.
Why?

[ip7z]

7-Zip uses FILE_SHARE_READ.

[DSP-ENP]

7-Zip uses FILE_SHARE_READ.

but i need to modify files, while it is opened in 7-zip and it is restricted.
is there any way to achieve file modification without closing 7-zip

[ip7z]

7-zip at first reads headers from archive.
If you modify opened archive file, then the headers will no longer be valid.
So 7-Zip doesn't allow to modify opened archive files.