Vcl.ValEdit.TValueListEditor.OnValidate
Delphi
property OnValidate: TOnValidateEvent read FOnValidate write FOnValidate;
C++
__property TOnValidateEvent OnValidate = {read=FOnValidate, write=FOnValidate};
Properties
| Type | Visibility | Source | Unit | Parent |
|---|---|---|---|---|
| event | published | Vcl.ValEdit.pas Vcl.ValEdit.hpp |
Vcl.ValEdit | TValueListEditor |
Description
Occurs when focus shifts away from a cell in the value list editor.
Write an OnValidate event handler to validate any edits the user enters in a cell before focus leaves it. OnValidate gives applications an opportunity to provide more validation than the EditMask property of the corresponding TItemProp object can supply.
OnValidate only occurs if the user edited the value of the cell that is about to lose focus. The OnValidate event handler can verify the value the user supplied, and if it is not acceptable, raise an exception.