如何在程序内部打开DOC文件

function OpenWordDocument(const AFileName: String;  //uses Comobj
  AControl: TCustomMemo): Boolean;
var
  NewDoc: Variant;
  V: OleVariant;
begin
  try
    try
      V := CreateOleObject('Word.Application');//建立自动化对象
      NewDoc :=V.Documents.Open(AFileName); //打开指定文件
      NewDoc.Content.Copy; //拷贝到剪贴板
      AControl.Lines.Clear;
      AControl.PasteFromClipboard; //粘贴
      NewDoc.Close; //关闭Word文件
    finally
      V.Quit; //释放自动化对象
    end;
    Result := True;
  except
    Result := False;
  end;
end;