>>>I added a custom property to my lowest level checkbox mlReadOnly (you can't use ReadOnly because it terribly confused VFP) it defaults to .F. the When method is:
>>>
>>>return ! this.mlReadOnly
>>>
>>
>>Thanks David. That's a solution too. I'm asking me why checkbox doesn't has a readonly property. Will do in VFP 6?
>>Carlos.
>
>Just a thought - you may have a textbox with a iif(lYourfield,"Yes"," ") as ControlSource. Or you can use a bullet character instead of "Yes".

Dragan: this is not a valid controlsource for a textbox. Maybe for the column. But if the column has this controlsource, how do the user introduce values in this field?
Carlos,