If youi suspect that this is also written to a message box, you might want to try looking for recently modified files in the directories mentioned in the message box. This find command might help:
find /MED18.104.22.168 /share/medina /home/balnair/.medina -type f -mtime -1 -print
If the information is not available in a file, a starting point for getting to the information out of the X window might be the xclip, xsel & xdotool commands.
Hope this helps!