main.cpp 范例文件

network-chat/main.cpp
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#include <QApplication> #include "chatdialog.h" #include <QtCore/QSettings> #include <QtNetwork/QNetworkConfigurationManager> #include <QtNetwork/QNetworkSession> int main(int argc, char *argv[]) { QApplication app(argc, argv); QNetworkConfigurationManager manager; if (manager.capabilities() & QNetworkConfigurationManager::NetworkSessionRequired) { // Get saved network configuration QSettings settings(QSettings::UserScope, QLatin1String("QtProject")); settings.beginGroup(QLatin1String("QtNetwork")); const QString id = settings.value(QLatin1String("DefaultNetworkConfiguration")).toString(); settings.endGroup(); // If the saved network configuration is not currently discovered use the system default QNetworkConfiguration config = manager.configurationFromIdentifier(id); if ((config.state() & QNetworkConfiguration::Discovered) != QNetworkConfiguration::Discovered) { config = manager.defaultConfiguration(); } QNetworkSession *networkSession = new QNetworkSession(config, &app); networkSession->open(); networkSession->waitForOpened(); if (networkSession->isOpen()) { // Save the used configuration QNetworkConfiguration config = networkSession->configuration(); QString id; if (config.type() == QNetworkConfiguration::UserChoice) { id = networkSession->sessionProperty( QLatin1String("UserChoiceConfiguration")).toString(); } else { id = config.identifier(); } QSettings settings(QSettings::UserScope, QLatin1String("QtProject")); settings.beginGroup(QLatin1String("QtNetwork")); settings.setValue(QLatin1String("DefaultNetworkConfiguration"), id); settings.endGroup(); } } ChatDialog dialog; dialog.show(); return app.exec(); }