Как перетаскивать (Drag and Drop) выделенный текст между компонентами Memo?

Code:

procedure TForm1.MyMemo1DragOver(Sender, Source: TObject; X, Y: Integer;

State: TDragState; var Accept: Boolean);

begin

Accept := Source is TMyMemo;

end;

Code:

procedure TForm1.MyMemo1DragDrop(Sender, Source: TObject;

                                X, Y: Integer);

var

Dst, Src : TMyMemo;

Ch       : Integer;

Temp     : String;

begin

Dst := Sender as TMyMemo;

Src := Source as TMyMemo;

Ch := LoWord(Dst.Perform(EM_CHARFROMPOS,0,MakeLParam(X,Y)));

if (Src = Dst) and (Ch >= Src.LastSelStart) and

    (Ch <= Src.LastSelStart+Src.LastSelLength-1) then

   Exit;

Dst.Text := Copy(Dst.Text,1,Ch)+Src.SelText+

             Copy(Dst.Text,Ch+1,Length(Dst.Text)-Ch);

Temp := Src.Text;

Delete(Temp,Src.LastSelStart+1,Src.LastSelLength);

Src.Text := Temp;

end;