一段获取网络设置，网卡信息的源码。简单实用，vc 下使用，可用来获得网络设置 也可用来获得网卡信息。适合初学者-A period of access network Settings, nic information source. Simple, practical, and vc, be used to obtain used under network Settings can also be used to obtain nic information. Suitable for beg