main.cpp 范例文件

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#include "browser.h"
#include <QtCore>
#include <QtWidgets>
#include <QtSql>
void addConnectionsFromCommandline(const QStringList &args, Browser *browser)
{
    for (int i = 1; i < args.count(); ++i) {
        QUrl url(args.at(i), QUrl::TolerantMode);
        if (!url.isValid()) {
            qWarning("Invalid URL: %s", qPrintable(args.at(i)));
            continue;
        }
        QSqlError err = browser->addConnection(url.scheme(), url.path().mid(1), url.host(),
                                               url.userName(), url.password(), url.port(-1));
        if (err.type() != QSqlError::NoError)
            qDebug() << "Unable to open connection:" << err;
    }
}
int main(int argc, char *argv[])
{
    QApplication app(argc, argv);
    QMainWindow mainWin;
    mainWin.setWindowTitle(QObject::tr("Qt SQL Browser"));
    Browser browser(&mainWin);
    mainWin.setCentralWidget(&browser);
    QMenu *fileMenu = mainWin.menuBar()->addMenu(QObject::tr("&File"));
    fileMenu->addAction(QObject::tr("Add &Connection..."),
            [&]() { browser.addConnection(); });
    fileMenu->addSeparator();
    fileMenu->addAction(QObject::tr("&Quit"), []() { qApp->quit(); });
    QMenu *helpMenu = mainWin.menuBar()->addMenu(QObject::tr("&Help"));
    helpMenu->addAction(QObject::tr("About"), [&]() { browser.about(); });
    helpMenu->addAction(QObject::tr("About Qt"), []() { qApp->aboutQt(); });
    QObject::connect(&browser, &Browser::statusMessage, [&mainWin](const QString &text) {
        mainWin.statusBar()->showMessage(text);
    });
    addConnectionsFromCommandline(app.arguments(), &browser);
    mainWin.show();
    if (QSqlDatabase::connectionNames().isEmpty())
        QMetaObject::invokeMethod(&browser, "addConnection", Qt::QueuedConnection);
    return app.exec();
}