扫描本地网段的给定ip，然后获取MAC地址和计算机名（主机名）。适合网管使用。另外还有一个ccolorlistctrl类，能改变item字体颜色。-scanning the local network of a given ip, then MAC address and access to the computer (host). Suitable for network use. There is also a ccolorlistctrl category, change the font