addressdialog.cpp Example File

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 #include "addressdialog.h"
 #include "ui_addressdialog.h"

 #include <QtCore>
 #include <QtNetwork>
 #include <QtWidgets>

 #include <limits>

 AddressDialog::AddressDialog(QWidget *parent)
     : QDialog(parent),
       ui(new Ui::AddressDialog)
 {
     ui->setupUi(this);
     setupHostSelector();
     setupPortSelector();
 }

 AddressDialog::~AddressDialog()
 {
     delete ui;
 }

 QString AddressDialog::remoteName() const
 {
     if (ui->addressSelector->count())
         return ui->addressSelector->currentText();
     return {};
 }

 quint16 AddressDialog::remotePort() const
 {
     return quint16(ui->portSelector->text().toUInt());
 }

 void AddressDialog::setupHostSelector()
 {
     QString name(QHostInfo::localHostName());
     if (!name.isEmpty()) {
         ui->addressSelector->addItem(name);
         const QString domain = QHostInfo::localDomainName();
         if (!domain.isEmpty())
             ui->addressSelector->addItem(name + QChar('.') + domain);
     }

     if (name != QStringLiteral("localhost"))
         ui->addressSelector->addItem(QStringLiteral("localhost"));

     const QList<QHostAddress> ipAddressesList = QNetworkInterface::allAddresses();
     for (const QHostAddress &ipAddress : ipAddressesList) {
         if (!ipAddress.isLoopback())
             ui->addressSelector->addItem(ipAddress.toString());
     }

     ui->addressSelector->insertSeparator(ui->addressSelector->count());

     for (const QHostAddress &ipAddress : ipAddressesList) {
         if (ipAddress.isLoopback())
             ui->addressSelector->addItem(ipAddress.toString());
     }
 }

 void AddressDialog::setupPortSelector()
 {
     ui->portSelector->setValidator(new QIntValidator(0, std::numeric_limits<quint16>::max(),
                                                      ui->portSelector));
     ui->portSelector->setText(QStringLiteral("22334"));
 }