TDBLookup

type TDBLookup = class(TComponent)

protected

  procedure Notification(); override;

  procedure DoClearSelection;

public

  constructor Create(); override;

Create - constructor for TDBLookup: calls inherited Create, creates links with fields and data source, initialises ActiveChange and Editing properties

  destructor Destroy; override;

Destroy - destructor for TDBLookup: frees links and calls inherited Destroy

  procedure Initialize();

Initialize makes links between local Fields and the appropriate fields in the remote data source, then fetches the lookup data

  function ListFieldValue;

  procedure UpdateData();

  function GetKeyValue();

  function GetListValue();

  property LookupCache: Boolean; [rw]

  property KeyField: String; [rw]

The name of the KeyField used in the lookup search

  property ListField: String; [rw]

ListField - the name of the list field used in the lookup search

  property ListFieldIndex: Integer; [rw]

ListFieldIndex - the index value of the list field

  property ListSource: TDataSource; [rw]

ListSource - the data source that contains the lookup list

  property NullValueKey: TShortcut; [rw]

  property OnClearSelection: TNotifyEvent; [rw]

end;

TDBLookup

TDBLookup - used as source of data by TDBLookupListBox or TDBLookupComboBox, to find data from a lookup table

TComponent,IUnknown,IInterfaceComponentReference

TPersistent

TObject