Then don't add the timer to _SCREEN or a Form. Just define it and create it:

PUBLIC oTimer1
oTimer1 = CREAT([oTimer])

DEFINE CLASS oTimer AS TIMER
	INTERVAL = 1000
	PROC TIMER
	IF FILE([foo.txt])
		QUIT
	ENDIF
ENDPROC
ENDDEFINE

Dave

>No that don't works.
>It only works if the window where my app. is running or (vfp) has the focus.
>??????
>
>thanks anyway !!