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DriveWorks Pro 22
Combo Box

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Combo Box

The Combo Box displays a drop down that contains items from which a selection can be made.

When the Form Control is applied the name entered will display as the caption for the Form Control. This can be changed by selecting the Caption property.

When an item in the Combo Box is selected the Form Control reports the exact item as it appears in the Control.

Items are added to the Control from the Items property. Use the pipebar (|) to separate each item, for example:

"Item A|Item B|Item C"

Finding An Item By Matching Characters

It is possible to find an item in the list by beginning to type characters of the item you wish to find. The list will then jump to the section of the list to match the characters you have typed.

To do this simply start typing the characters of the item you want to find at a steady constant speed.



Appearance - Border

Appearance - Caption


  • Clear Selection Allowed

    If TRUE, allows the user to clear the active selection, otherwise if FALSE, an item IS always selected.

  • Default Value

    Controls the default value of the control. If the default value is based on a rule and the value changes, then the value of the control will be changed to be the new default value.

  • Enabled

    Controls whether the control is enabled (if the result is TRUE) or disabled (if the result is anything other than TRUE, e.g. FALSE).

  • Error Result

    Determines whether the value of the control is in error. The result of this rule is a string containing the error message if the value is in error, otherwise a blank string or the number zero.

  • Items

    Combo Box - A list of items, delimited by the | symbol, which control the items shown in the control.

  • Selected Item

    The selected item in the list.

  • Selected Item (Override Rule)

    The selected item in the list.

  • Selected Item Removed Behavior

    Specifies the action taken by the list control when the list of items is changed, and the selected item is not in the new list.

  • Tab Index

    Configures the position of the control in the form tab order.

  • Visible

    Determines whether the control is visible (TRUE) or hidden (FALSE).


  • Macro Argument

    Provides an optional argument to the macro

  • On Change

    Determines the name of the macro to fire when the value of this control changes.


  • (Metadata)

    Optional text which can be used to provide information belonging to or about a control. For example, a list of CSS classes which can be parsed and applied to the control using the Integration Theme in DriveWorks Live. This doesn't affect the control's behavior.

  • (Name)

    The name of the control

  • (Tag)

    Optional text which can be used to describe the control, but which doesn't affect the control's behavior.

  • Tooltip Duration

    Controls the duration, in seconds, for which the tooltip will remain visible. Values of 0 and below indicate an infinite duration.

  • Tooltip Text

    Specifies the text to display in a tooltip when hovering over the control.


  • Caption Width

    Controls the width of the control's caption.

  • Height

    Controls the height of the control.

  • Left

    Controls the left position of the control.

  • Top

    Controls the top position of the control.

  • Width

    Controls the width of the control.