How to prevent your app from staring a second instance of itselt?

Sometimes you don't want your program to be run in more then one instance. It is a very simple procedure to prevent multiple instances and it goes like this:
In the main form's load event...

If App.PrevInstance then
'Maybe tell the user that another instance is not allowed
end
End If

Mail to Daniel Wiman <daniel@wimania.com>
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