Thanks Eric
I'll give it a try

>>Hi Rex,
>>
>>>How can I tell in the Grid.BeforeRowColChange method if I am trying to change the Row or the Column in the grid?
>>
>>If you can wait untill AfterColRowChange its easier (save the column number, save it in a property and compare it too tnColIndex), but the only way I know how to do it in Before.. is like this:
>>
>>

LPARAMETERS nColIndex
>>
>>if inlist(lastkey(), 5, 24)
>>	debugout 'Row Changed'
>>else
>>	debugout 'Col Changed'
>>endif

Now, this will not tell you accuratly when you choose a cell with the mouse, or programmatically. You should be able to trap that though, Good Luck!
>
>I use this code that Cetin posted here some months ago:
>
>WITH this
> IF mdown()
> lnBottom = .top+.headerheight+.relativerow * .rowheight
> lnTop = lnBottom - this.rowheight
> lnMouseRowPos = mrow(wontop(),3)
> lnMouseColPos = mcol(wontop(),3)
> llChangingRow = !(between(lnMouseRowPos,lnTop, lnBottom) ;
> and between(lnMouseColPos,.left,.left+.width))
>* Is click on a different row
> ELSE
> llChangingRow = inlist(lastkey(),24,5,18,3)
>* Was lastkey() in Up,down, pgup,pgdown
> ENDIF
>ENDWITH
>
>Works beautifully. I have implemented it in my base grid class, and created two new hook methods, BeforeRowChange, and BeforeColChange, and I call one of them conditionally depending on the value of llChangingRow.
>
>BTW, Thanks, Cetin.