说明：  MCI命令的VC版 用MCI命令来实现多媒体的播放功能,几乎有播放器软件的各种功能，你只是引用这些函数就能做出一个播放器来
(MCI command VC version with MCI commands to realize multimedia playing capability, a player almost has a variety of software features, you have only used these functions can make a player)