检测广播终端，显示终端应答、ups 、质音音量信息。-Detection of radio terminals, display terminals responses, ups, quality audio and volume information.

wince环境下操作音量的一个类代码实现，对于操作音量，封装成类，可以借鉴。-wince environment operate the volume of a class code, the operating volume, packaged into a class, you can learn from.

模拟按键所有系统调整音量、静音，支持win7-Analog buttons to adjust the volume of all systems, support win7