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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
//! [0]
// To find the IP address of qt-project.org
QHostInfo::lookupHost("qt-project.org",
this, SLOT(printResults(QHostInfo)));
// To find the host name for 4.2.2.1
QHostInfo::lookupHost("4.2.2.1",
this, SLOT(printResults(QHostInfo)));
//! [0]
//! [1]
QHostInfo info = QHostInfo::fromName("qt-project.org");
//! [1]
//! [2]
QHostInfo::lookupHost("www.kde.org",
this, SLOT(lookedUp(QHostInfo)));
//! [2]
//! [3]
void MyWidget::lookedUp(const QHostInfo &host)
{
if (host.error() != QHostInfo::NoError) {
qDebug() << "Lookup failed:" << host.errorString();
return;
}
const auto addresses = host.addresses();
for (const QHostAddress &address : addresses)
qDebug() << "Found address:" << address.toString();
}
//! [3]
//! [4]
QHostInfo::lookupHost("4.2.2.1",
this, SLOT(lookedUp(QHostInfo)));
//! [4]
//! [5]
QHostInfo info;
...
if (!info.addresses().isEmpty()) {
QHostAddress address = info.addresses().first();
// use the first IP address
}
//! [5]
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