RAD Studio VCL Reference
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TDBLookupComboBox.NullValueKey Property
TDBLookupComboBox Class | TDBLookupComboBox Members | DBCtrls Namespace | Description | See Also
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Specifies the key combination that assigns a blank value to the associated field.

Pascal
property NullValueKey: TShortCut;
C++
__property TShortCut NullValueKey;
Description

Set NullValueKey to let users enter a "blank" value into the associated field. When the user types the key combination that this shortcut represents, the associated field is cleared.

Tip: Use the ShortCut function or the TextToShortCut function to create a value to assign to NullValueKey.
 

 

See Also
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