The only problem now is that the CheckBox seems to be disabled. I had already checked the ReadOnly and Enabled properties of the CheckBox in the Column, in the Grid.; both properties were set to their default values, i.e., ReadOnly=.F. and Enabled = .T.

I cannot understand this. The cursor into which the user would enter this information is a writeable cursor, since I used the "Create Cursor" command.

With these settings, why can I not write a Check Mark into the CheckBox?