使用API函数CDdoor 来控制光驱门的开和关程序十分简单，由于 CDdoor 函数自身包含了对异常错误的处理机制，因此这个程序的通用性很高，你可以把这段代码移植到你的程序中，实现某些多媒体播放器所常用的开关光驱的功能。

菜单等内容。-CDdoor the use of API functions to control the drive door open and very simple customs clearance procedures, as CDdoor function contains its own error handling mechanism of anomaly, this process involves a high degree of general-purpose, you can put this code into your program to achieve certain multimedia player used by the switch drive function. Menu and so on.