compile windows app so only one instance will run

[Mike Kerner]

Is there any way to compile an app from LC for execution on Windows so that
only one instance of the app will run at a time?

-- 
On the first day, God created the heavens and the Earth
On the second day, God created the oceans.
On the third day, God put the animals on hold for a few hours,
   and did a little diving.
And God said, "This is good."