automatically run a script?

[Do_c]

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

[highend]

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

[Do_c]

Hmm thanks, I'll look into it.

[Do_c]

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)?

[highend]

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

[Do_c]

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

[highend]

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.