XYplorer Beta Club

Is there any way to automatically run a script when a certain file is opened?

Sure, CFA's are a possible place (custom file associations)

Hmm thanks, I'll look into it.

Is it possible through a CFA to let other users know that a file is opened by another user? Even if you open the file with another application (without browsing in XYplorer)?

If the user isn't using XY, in what way would CFAs be involved?

Or without CFAs..I guess it's not possible. What if the files are opened through XYplorer?

It depends on how the users should be informed (and when). Ofc it could be done without XY, write an application e.g. in AutoHotkey's scripting language.