>Thanks for hanging in there Sergey. There is obviously something I am missing here: it shouldn't be this hard to figure out what data is displayed in column 4. Columns 1, 2 and 3 have fields from a parent table while Column 4 is from a related child table. I need to know the child value, if any, for the currently selected row. I expected this.column4.text1.value in the AfterRowColChange method of the grid to provide that information but it is NOT reliable. When AllowCellSelection = .f., the value does not change appropriately as you move from one row to another. If you click on columns 1 through 3, the value returned is typically the child value from row 1. If you click on column 4, the value returned may be from another row, but it is almost never from the currently selected row. The only time I've been able to reliably retrieve a value from column 4 is when AllowCellSelection = .t. and column 4 has focus.
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>Update: EVAL(this.column4.controlsource) does appear to be reliable, even when AllowCellSelection = .f. I'll continue testing tomorrow but am hopeful this will prove to be the solution. Thanks!

Yes it's right direction.