preventing Delphi app from running more than once

Posted by BeckyR on April 28, 2003 at 21:18:35:

If I have a Delphi .exe on a shared network drive for different users to access, but because it accesses a database, I only want one person to be able to have the application open at a time. Is there a way inside Delphi I can add this check to the program code?

Thanks in advance.