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The ComboForm class is part of the Visual DataFlex product since it was introduced in 1996. The control is also called a drop-down box and combines a single value entry control with a list of options. By setting the property Entry_State to false you turn the control into a select only list, users can rotate through the values with a arrow-down/arrow-up keys and open the list by clicking on the arrow on the right. Usually the list is static and does not extend during the program run. ...