记录一些 用过的 cmd 命令

//刷新dns
system("ipconfig /flushdns");

//刷新网络 ( 可能要重启 )
system("netsh winsock reset");


WinExec("SystemPropertiesPerformance.exe",SW_SHOW );

//设置ip 掩码 网关
system ( "netsh interface ip set address \"本地连接\" source=static address=192.168.1.12 mask=255.255.255.0  gateway=192.168.1.1 " )