Enable cell protection

[JDasHO]

Hi everyone,
is there a way to enable protection of a worksheet?
Right now what I'm trying to do is setting a cell to protected like so:

ws.cell("D4").protection(xlnt::protection::locked_and_visible());

However it doesn't take effect. When I open the so created xlsx file in Excel I can still edit the protected cell and under cell/formatting Excel also informs me that cell protection is only effective after I enabled sheet protection.

[m7913d]

As discussed in issue #748, this repo has been unmaintained for several years.
In order to continue this great project started by tfussell, we have created a new repo to support further development by the community.
Feel free to participate in this community effort by submitting issues and PR to this new community-driven repo.