>>_Tally and timers Thread #1102133 Message #1102133
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>
>What an interesting reading, especially close to the end of that thread.
>
>Anyway, timers in VFP are based on Windows timers and are triggered when VFP processes Windows events. When AutoYield =.T., approximately every 200 milliseconds VFP processes Windows message before executing the next command. Therefore, it is possible for Timer events to fire between any two consecutive commands, SELECT-SQL and the next command are not special.
>
>Thanks,
>Aleksey.

Hi Aleksey,

it would be a lot of comfortable to control this interval

AutoYield = 200 as .T.

AutoYield = 0   as .F.

AutoYield = 500 as 500ms

and

how can I know if the code is performed among two lines of code in execution,
because AutoYield is fired ?

With the stack level PROGRAM(-1) ?
Possible, but not very deterministic.