>The field is logical so it is a value of .F., but perhaps I should not assume that the value is .F.?
>
>>>It seems that the checkbox is disabled except for the very first row. What gives here? Is there some Property I've not set?
>
>>Have you checked the underlying data? If the checkbox is bound to a field that contains NULL, it will appear disabled.

Since you created this field in your select statement yourself, of course, you have .F. in this field.