Thx. This will have no interface whatsoever. Will be triggered by a task scheduler in the morning and only be open for 3 hours of so awaiting the incoming file.

I already have a pilot done today using a timer. Haven't tried the Sleep() option yet but I see it as a cleaner option. With the timer I have a longer prg (there is no UI), and it is OOP, with instantiation of a timer subclass and setting properties, etc.

I see Sleep as cleaner for this very small app as I could just do a simple Do While .T., check if the 3 hours expired (then quit), check if the file arrived and process it (then quit), else Sleep() for a few minutes and enddo.

How does it sound?

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Sleep() burns no cycles while the API call is in effect, but VFP won't respond to any UI events in the interval that Sleep() is in effect, either, so you have to decide which is more important, responding to UI events or not eating some CPU cycles while idling along between checks for the file arriving.
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