If I understand you right, you want to be able to click on a cell in a grid and have that cell turn into a combobox. The way to do that is to have the combo box invisible at all times until needed. When the cell is clicked, set the combo box left, top, length and height to the cell parameters and then make it visible. Once an item is selected, make the combobox invisible and move the selected item to the cell text.

If I understand you right, you want to be able to click on a cell in a grid and have that cell turn into a combobox. The way to do that is to have the combo box invisible at all times until needed. When the cell is clicked, set the combo box left, top, length and height to the cell parameters and then make it visible. Once an item is selected, make the combobox invisible and move the selected item to the cell text.