Detect when a file is used

I am not sure if this question should be here but what I wonder is if this is possible:
I have a mp3-file like this. "D:\\music\\song.mp3".
Now if I will play this song with example VLC-player, this meens that the mediaplayer accessing the file.

My question is if it is possible to detect when this file is used/played and if it is possible to return the fullpath for the file when it happens ?

There is no easy way of doing this. You could write a filter driver, but it is A LOT of effort.

--
Mats

okay, I have to ask. I wonder if the fileSystemWatcher component in the form application can do this. I have have tried this component out with these events:

_Changed
_Created
_Deleted
_Renamed

But when accessing the file wich should be in this case, no of these event could be used for this as I have tried out ?

Under the properties of this component there is a "NotifyFilter" that for example has "LastAccess" wich perheps could be it but I have not got it to work there.
With the changed event I have tried it out to open the file in "Notepad" as a test and change a few characters and saved the file and this returns me the Full Path of the file. It works fine.

I wonder if the "LastAccess" could be something to use in any way.

This was strange, suddenly it works with the _Changed event and NotifyFilter "LastAccess".
The Watcher detects the file and full path when using the testcode like this.
I will try to test it out.

Code:

---

private: System::Void fileSystemWatcher1_Changed(System::Object^  sender, System::IO::FileSystemEventArgs^  e)
{
               
        MessageBox::Show(e->FullPath->ToString());
               
}

---

[/code]

i think u need to set the EnableRaisingEvents property to true.

http://msdn.microsoft.com/en-us/libr...65(VS.85).aspx
ReadDirectoryChangesW()

use the filter for detecting the last access time changing.