This property returns and sets a value that indicates whether a control can be edited.
object.Locked [= Boolean]
ComboBox object. You cannot type in the text box.
ComboBox object. You can type in the text box, and you can open the drop-down list box.
For the ComboBox control, when Locked is set to True, a user cannot change any data. However, a user can highlight data in the text box and copy it. This property does not affect programmatic access to the ComboBox.