The Customize Combo Box Value Dialog

The Customize Combo Box Value dialog can be displayed by clicking on the Customize push button in the Properties section of the Edit Combo Box dialog. This dialog presents additional attributes of a combo box related to its data value. The dialog consists of one section, Validation.

Validation Section

This section presents the validation attributes for list boxes.

Validation Rule

This field contains the data validation rule for the combo box. Refer to Data Value Validation Rules for more detailed information about validation rules.

Minimum Input Length

This field contains the minimum number of characters that must be entered into the combo box, or the minimum number of characters in a selected list item for the combo box data value to be valid. Refer to Data Value Validation Rules for more detailed information about minimum input lengths and other data validation rules.

Accept Abbreviations

This field determines if the data value entered into the combo box, or the selected list item value can partially match a validation rule (alphanumeric fields only). For example, if this field were selected and the validation rule was "AAA9999", a data value of "AAA1" would be accepted. Otherwise, it would generate a validation error.

Blank is $Null

This field determines if blank values in the combo box should be translated to the Zim null value $Null. If this field is selected, this translation occurs. Otherwise, it does not.

Value Must Match List

This field determines if a data value entered into a combo box is required to match a member of the list. If this field is selected, the matching requirement is enforced. Otherwise, it is not.

Value Required

This field sets the "required" attribute for the combo box. The values are "No", "Yes" and "Immediate". "No" means that blank data values are accepted. "Yes" means that a non-blank data value must be entered or selected from the list before a FORM INPUT "transmit" action can occur. "Immediate" means that a non-blank data value must be entered or selected from the list before the combo box can loose the input focus.

Error Message

This field contains the message to display in the message field in the form (if one exists) when the entered or selected data fails the Validation Rule.

Dialog Push Buttons

Close

This push button performs any required data validation, records (but does not commit) any changes which were made in this dialog, and returns to the Edit Combo Box dialog.

Cancel

This push button discards any changes that were made in this dialog and returns to the Edit Combo Box dialog.

Help

This push button invokes the Zim Help facility, initially displaying the section entitled Customize Combo Box Value dialog (this section).