Как поместить данные в RichEdit контрол

unit dbrich;
interface

uses
  Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms, Dialogs,
  StdCtrls, ComCtrls, DB, DBTables, Menus, ExtCtrls, Mask, Buttons, DBCtrls;

//Замечание: вызывать Tablex.Edit необходимо перед изменением свойства paragraph

type
  TDBRichEdit = class(TRichEdit)
  private
    FDataLink: TFieldDataLink;
    FAutoDisplay: Boolean;
    FFocused: Boolean;
    FMemoLoaded: Boolean;
    FPaintControl: TPaintControl;
    procedure DataChange(Sender: TObject);
    procedure EditingChange(Sender: TObject);
    function  GetDataField: string;
    function  GetDataSource: TDataSource;
    function  GetField: TField;
    function  GetReadOnly: Boolean;
    procedure SetDataField(const Value: string);
    procedure SetDataSource(Value: TDataSource);
    procedure SetReadOnly(Value: Boolean);
    procedure SetAutoDisplay(Value: Boolean);
    procedure SetFocused(Value: Boolean);
    procedure UpdateData(Sender: TObject);
    procedure WMCut(var Message: TMessage); message WM_CUT;
    procedure WMPaste(var Message: TMessage); message WM_PASTE;
    procedure CMEnter(var Message: TCMEnter); message CM_ENTER;
    procedure CMExit(var Message: TCMExit); message CM_EXIT;
    procedure WMLButtonDblClk(var Message: TWMLButtonDblClk);
      message WM_LBUTTONDBLCLK;
    procedure WMPaint(var Message: TWMPaint); message WM_PAINT;
    procedure CMGetDataLink(var Message: TMessage); message CM_GETDATALINK;
  protected
    procedure Change; override;
    procedure KeyDown(var Key: Word; Shift: TShiftState); override;
    procedure KeyPress(var Key: Char); override;
    procedure Notification(AComponent: TComponent;
      Operation: TOperation); override;
    procedure WndProc(var Message: TMessage); override;
  public
    constructor Create(AOwner: TComponent); override;
    destructor Destroy; override;
    procedure  LoadMemo;
    property   Field: TField read GetField;
  published
    property AutoDisplay: Boolean read FAutoDisplay write SetAutoDisplay
      default True;
    property DataField: string read GetDataField write SetDataField;
    property DataSource: TDataSource read GetDataSource write SetDataSource;
    property ReadOnly: Boolean read GetReadOnly write SetReadOnly
      default False;
  end;

procedure Register;

implementation

procedure Register;
begin
  RegisterComponents('Data Controls', [TDBRichEdit]);
end;

{Mostly copied from DBMemo}

constructor TDBRichEdit.Create(AOwner: TComponent);
begin
  inherited Create(AOwner);
  inherited ReadOnly := True;
  FAutoDisplay := True;
  FDataLink := TFieldDataLink.Create;
  FDataLink.Control := Self;
  FDataLink.OnDataChange := DataChange;
  FDataLink.OnEditingChange := EditingChange;
  FDataLink.OnUpdateData := UpdateData;
  FPaintControl := TPaintControl.Create(Self, 'EDIT');
end;

destructor TDBRichEdit.Destroy;
begin
  FPaintControl.Free;
  FDataLink.Free;
  FDataLink := nil;
  inherited Destroy;
end;

procedure TDBRichEdit.Notification(AComponent: TComponent;
  Operation: TOperation);
begin
  inherited Notification(AComponent, Operation);
  if (Operation = opRemove) and (FDataLink <> nil) and
    (AComponent = DataSource) then DataSource := nil;
end;

procedure TDBRichEdit.KeyDown(var Key: Word; Shift: TShiftState);
begin
  inherited KeyDown(Key, Shift);
  if FMemoLoaded then
  begin
    if (Key = VK_DELETE) or ((Key = VK_INSERT) and (ssShift in Shift)) then
      FDataLink.Edit;
  end else
    Key := 0;
end;

procedure TDBRichEdit.KeyPress(var Key: Char);
begin
  inherited KeyPress(Key);
  if FMemoLoaded then
  begin
    if (Key in [#32..#255]) and (FDataLink.Field <> nil) and
      not FDataLink.Field.IsValidChar(Key) then
    begin
      MessageBeep(0);
      Key := #0;
    end;
    case Key of
      ^H, ^I, ^J, ^M, ^V, ^X, #32..#255:
        FDataLink.Edit;
      #27:
        FDataLink.Reset;
    end;
  end else
  begin
    if Key = #13 then LoadMemo;
    Key := #0;
  end;
end;

procedure TDBRichEdit.Change;
begin
  with FdataLink do
  begin
    {if Assigned(FdataLink) and (Assigned(DataSource))and
     (DataSource.State = dsBrowse) then
      Edit; } {make sure edits on Attributes change}
    if FMemoLoaded then Modified;
  end;
  FMemoLoaded := True;
  inherited Change;
end;

function TDBRichEdit.GetDataSource: TDataSource;
begin
  Result := FDataLink.DataSource;
end;

procedure TDBRichEdit.SetDataSource(Value: TDataSource);
begin
  FDataLink.DataSource := Value;
  if Value <> nil then Value.FreeNotification(Self);
end;

function TDBRichEdit.GetDataField: string;
begin
  Result := FDataLink.FieldName;
end;

procedure TDBRichEdit.SetDataField(const Value: string);
begin
  FDataLink.FieldName := Value;
end;

function TDBRichEdit.GetReadOnly: Boolean;
begin
  Result := FDataLink.ReadOnly;
end;

procedure TDBRichEdit.SetReadOnly(Value: Boolean);
begin
  FD