Get user name of an open file

[Patfor7]

Hi,
I would like to get, for a pdf file, located on a server, in case somebody is currently reading it, what's the name of the user who has currently open it. This in VBA excel. Could somebody help me?
Thanks.

[tuvw755]

这是新加的空白文章15，可以在UBB可视化编辑器中，添加和修改文章内容。

[Patfor7]

Sorry tuvw755 but what is your answer? I can only see stranga characters ...