When I was facing similar requirements all I had to do was to set all grid's readonly appropriately in AfterRowColChange method.

>Hello Everybody
>
>I have a form with a grid to enter monthly time data for contracts into a cursor.
>
>The cursor has always 31 rows. (= day 1 to 31,1 to 31 marks,1 to 31 starttimes,1 to 31 endtimes ...)
>The cursor is filled with default planning data values for the given month and contract.
>Now i want to do 2 things:
>a:
>Disable (or set to read only) some rows under spezial circumstances.
>(disable row 30 and 31 if month = februar or disable row 1 to 14 if contract starts on 15s day of month)
>The actual month and the contract start date are values of textboxes in my form.(can be part of the cursor if needed)
>
>b:
>disable(or set to read only) a row column for spezial circumstances.
>If field MARK in column2 contais "XYZ" or "YYY" or ... it can't be changed. If MARK has another value it can be changed.
>
>Any help welcomed
>Best regards
>Albert