TCustomDBListBox

type TCustomDBListBox = class(TCustomListBox)

  procedure EditingChange();

EditingChange - method for responding to a change in the Editing property

  procedure FocusRequest();

FocusRequest - method for responding to a request to give this control focus

  function GetDataField;

GetDataField - returns the name of the data field as a string

  function GetDataSource;

GetDataSource - returns the identity of the data source

  function GetField;

GetField - returns the identity of the field

  procedure SetItems(); override;

SetItems - copies the specified Values into the Items property

  function GetReadOnly;

GetReadOnly - fetches the ReadOnly status from the field datalink rather than using the inherited ReadOnly status

  procedure SetReadOnly();

SetReadOnly - changes the datalink ReadOnly property as well as the local property, to that specified by Value

  procedure SetDataField();

SetDataField - links to the field in the datalink with the given name

  procedure SetDataSource();

SetDataSource - changes the attached data source to the one specified by AValue

  procedure CMGetDataLink(); message;

CMGetDataLink - control message method for obtaining the data link

protected

  FDataLink: TFieldDataLink;

FDataLink - local variable holding the identity of the field data link

  procedure DataChange(); virtual;

DataChange - method for dealing with a change in the data

  procedure KeyDown(); override;

KeyDown - emulate the action of pressing the specified key (makes OnKeyDown respond)

  procedure Loaded; override;

  procedure Notification(); override;

  procedure UpdateData(); virtual;

UpdateData - method for applying any pending changes to the data

public

  constructor Create(); override;

Create - constructor for TCustomDBListBox: calls inherited Create, makes links and sets up event handlers for data change, change in Editing status and updating data

  destructor Destroy; override;

Destroy - destructor for TCustomEBListbox: frees data links then calls inherited Destroy

  procedure Click; override;

Click - a procedure that allows the programmer to simulate a mouse click over the control, and initiates the same Action as that associated with the OnClick event

  procedure EditingDone; override;

EditingDone - what to do when you have finished editing; calls the OnEditingDone event handler if assigned

  property Field: TField; [r]

The identity of the Field to which the listbox belongs

  property DataField: String; [rw]

The name of the DataField to which the listbox belongs

  property DataSource: TDataSource; [rw]

The identity of the DataSource from which the lookup data will be fetched

  property ReadOnly: Boolean; [rw]

ReadOnly - if True, the data can only be read but not written or edited

end;

TCustomDBListBox

TCustomDBListBox - base class for TDBListBox, a data-aware listbox for presenting list information from a database

TCustomListBox

TCustomList Box : the base class for TListBox

TWinControl

TControl

TLCLComponent

TLCLComponent - base class for LCL components

TComponent,IUnknown,IInterfaceComponentReference

TPersistent

TObject

HowToUseDataAwareControls

HowToUseDataAwareControls - Hints for accessing databases