Hi Frank

Thanks for your reply. I make the timer disabled while processing my timer event then re-enabled when complete. I was wondering whether this was necessary and you confirmed that it is required.

Thanks
Simon

>Simon,
>
>>I read the VFP documentation but I could not tell if the timer event can be trigger while in the timer event or is it disabled until the timer event completes. I am trying to trace down a strange experience where the debugger shows a timer control disabled and the timer event still occuring (There is only one timer on the form).
>
>Yes! it does. I encountered that a timer - esp. when interval is short - fires a second time even if it should only once.
>
>What I do ALWAYS is :
>
>

>PROCEDURE TIMER
>local ln_WasInt
>if this.Interval = 0
>    return
>else
>    ln_WasInt     = This.Interval
>    this.Interval = 0
>endif
>
>.... do my work ...
>
>
>this.Interval = ln_WasInt
>ENDPROC
>

>
>And since I do this, never had problems with timers anymore
>
>
>HTH
>
>Frank