>Is there a way to change the tool tip text for a cell in a grid as the user is moving down through the records of the grid.
>I assigned a method to the tooltiptext and returned a text value
>but nothing happened.

Bob, you can try this in grid.AfterRowColChange() event
this.columns(this.activecolumn).text1.tooltiptext = "Record No = "+ alltri(str(recno()))

In this sample ToolTipText will show the current record number.