Thank-you for your suggestion. I will give it a try.

>>Does anyone know if it is possible to cause the drop down list to be displayed when you mouse over a ComboBox? Normally it is only displayed when you click on the comboBox but I would like to trigger it with a simple MouseEnter and close it with a MouseLeave.
>
>You could try issuing the KEYBOARD command with the key combination that drops/raises a dropdown list. I'm not sure what that combination is in VFP, I believe some languages/environments use Alt + DownArrow to drop (and maybe Alt + UpArrow to raise (?))