>>

>>* Form's Init
>>Thisform.Checkbox1.ControlSource = "Thisform.Timer3.Enabled"
>>

>>
>A checkbox may confuse the user because when you
>click it, the control was checked and after
>the timer.timer event fire it remain checked
>even if the timer was now disabled...
>
>You know what i mean?
>
>HTH :-)

Not if the Timer's timer event does a Thisform.Checkbox.Refresh() which will update the display of the checkmark.