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Combo Box Controls

A combo box is implemented as a control with a Type property setting of ComboBox. It consists of a field with a drop-down button attached at the right edge. The user clicks the drop-down button, which activates a selection list, and then clicks a selection in the list. The selected value replaces the previous value in the box.

Combo box controls implement special-purpose picklists in chart, calendar, and pick applets. In chart applets they implement the Show and By combo boxes. In calendar applets they implement the user name combo box. In pick applets they implement the Find combo box. Combo box controls appear and behave almost identically to static picklists, but they are implemented through a different control type (ComboBox rather than Text).

A combo box control creates a UI element that allows the selection of a value from a set of values. This type can be used only if the control has a picklist defined that provides the list of values. An example of a combo box is shown in Figure 56.

Figure 56.  Combo Box