QT获取本机IP和MAC地址的方法

QNetworkInterface localInterface =localInterface.interfaceFromName("设备名称 例如 eth0");

QString MAC =localInterface.hardwareAddress()/* "90:FB:A6:11:52:63"*/;

int localNetmask = 0xFFFFFF00;

int localIP ;

for(int i =0; i < localInterface.addressEntries().size(); i ++)

{

if( !localInterface.addressEntries().at(i).ip().isNull() &&localInterface.addressEntries().at(i).ip().protocol()==QAbstractSocket::IPv4Protocol)

{

localIP = localInterface.addressEntries().at(i).ip().toIPv4Address();

localNetmask = localInterface.addressEntries().at(i).netmask().toIPv4Address();

break;

}

}

以上方法貌似某些情况下也不好使，可以试试下面的方法：

QString localHostName=QHostInfo::localHostName();

QHostInfo hostInfo=QHostInfo::fromName(localHostName);

QList<QHostAddress>listAddress=hostInfo.addresses();

for(int j = 0; j < listAddress.size(); j++)

{

if(!listAddress.at(j).isNull() && listAddress.at(j).protocol() == QAbstractSocket::IPv4Protocol

&& listAddress.at(j) != QHostAddress::LocalHost)

{

emit this->sendMsg(listAddress.at(j).toString());

break;

}

}

获取本机有效IP地址、掩码、网关、MAC地址，一直以来我都没找到有效方法，以前用MFC时也是这样，真无语了...

再或者：

[code]    QList<QHostAddress>listAddress = QNetworkInterface::allAddresses();
for(int j = 0; j < listAddress.size(); j++)

{

if(!listAddress.at(j).isNull() && listAddress.at(j).protocol() ==  QAbstractSocket::IPv4Protocol

&& listAddress.at(j) != QHostAddress::LocalHost)

       {

localIPAddress = listAddress.at(j).toString();

break;

}

}

[/code]