>I should write a VFP program that work on server. Continuously, This program will look a vfp table, if new records added, make some time consuming tasks.
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>User should start and stop this program for maintenance purpose.
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>Question is: How can I escape from an endless loop, when user clicks the stop buton on my vfp form?
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>Is this type program consume much CPU time due to endless do while loop?
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>Thanks for all help.
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>Ali Ihsan

You better use keyboard to stop, e.g.

DO WHILE .t.
	WAIT 'Press Alt+S To Stop' WINDOW nowait
	IF INKEY()=31
		exit
	endif	
ENDDO
WAIT clear