[Overview][Constants][Types][Classes][Procedures and functions][Index] Reference for unit 'DBCtrls' (#lcl)

TCustomDBListBox.DataChange

Performs actions needed when the linked dataset is repositioned.

Declaration

Source position: dbctrls.pp line 366

protected procedure TCustomDBListBox.DataChange(

  Sender: TObject

); virtual; abstract;

Arguments

Sender

  

Object for the event notification.

Description

DataChange is an method used to perform actions needed when the control needs to be refreshed after a positioning the linked dataset. DataChange is an abstract virtual method in TCustomDBListBox, and must be implemented in a descendent class to perform the actions required for the control.

DataChange is assigned to the OnDataChange event handler in the TFieldDataLink instance used in data-aware controls.

See also

TFieldDataLink.OnDataChange

  

Event handler signalled when the field data link has been changed.

TDBListBox.DataChange

  

Implements the event handler signalled when data in the linked dataset has been changed.

TDBLookupListBox.DataChange

  

Performs actions needed when a new DataField value is selected using the lookup dataset.

Version 4.0 Generated 2025-05-03 Home