一个没有外部控件的多媒体播放器 利用MCI指令制作播放器，简单实用，很适合于做为自己软件的一个附带功能或背景音乐，正是基于这点需求，我准备分几个部分来写：-a no external controls multimedia players use MCI directive produced players, simple and practical, is well suited to its own software as an incidental function, or the bac