CF_OEMTEXT from CF_TEXT and vice versa?
Starting with the easy case, or at least it looks easy.
You'll have to trick yourself before anybody notices, which may not be possible.
You can't. You'll have to do it before the process starts.
Request the directory security attributes that correspond to your proposed operation.
The large obstacles.
Remembering some old APIs.
You can ask for its handle and mark it read-only.
If you want to host UI, use a real window (possibly hidden).
The translation team sets the deadline.
Challenge accepted.