>Thank you very much .
>
>But , can you , Cetin , teach me , how can i make code to check what's changing ?
>
>Thank you .

lparameters nColIndex
Local llChangingRow,lnTop,lnBottom,lnMouseRowPos,lnMouseColPos
llChangingRow = .f.
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))
	Else
		llChangingRow	= inlist(lastkey(),24,5,18,3,145,148)
	Endif
	If llChangingRow
*..

PS: VFP6 and later has GridHitTest to determine where mouse is.
Cetin