Hi,
Got the same problem with combobox... the only solution I found was to use a real combobox, set its visible property to False and when the user clicks on a cell, position the combo (by determining the position of the cell) and set it visible property to true.
Now, if you want it in each cell and if you can add or delete rows, you would have to create buttons dynamically when you select the column (with rowcount)...