一个模仿Windows下的记事本，实现了新建，打开，保存，复制，粘贴，换行等功能。 至于搜索还为能实现，只是弹出了一个窗口。望高手指教。-An imitation of Windows Notepad, to achieve a new, open, save, copy, paste, wrapped functions. As for the search to achieve, but a pop-up window. Expert advice Point.