09b852b1d8
Examples are usually a good way to get to know a new codebase, do not teach developers who are new to Qt about the 3-arg connect() to begin with. Drive-by changes: - `this` can't be implicitly captured with [=] in a lambda, instead capture by reference - Update docs related to the sqlbrowser example; the overloaded signal it mentions has been removed in Qt6 - In the sqlbrowser example, rename addConnection() (no-arg) overload to openNewConnectionDialog, suggested in code review Change-Id: I30c9f35bda4ac2f460d767ab7f84422ae3ed09f7 Reviewed-by: Volker Hilsheimer <volker.hilsheimer@qt.io>
55 lines
1.9 KiB
C++
55 lines
1.9 KiB
C++
// Copyright (C) 2016 The Qt Company Ltd.
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// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
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#include "browser.h"
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#include <QtCore>
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#include <QtWidgets>
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#include <QtSql>
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void addConnectionsFromCommandline(const QStringList &args, Browser *browser)
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{
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for (int i = 1; i < args.count(); ++i) {
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QUrl url(args.at(i), QUrl::TolerantMode);
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if (!url.isValid()) {
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qWarning("Invalid URL: %s", qPrintable(args.at(i)));
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continue;
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}
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QSqlError err = browser->addConnection(url.scheme(), url.path().mid(1), url.host(),
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url.userName(), url.password(), url.port(-1));
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if (err.type() != QSqlError::NoError)
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qDebug() << "Unable to open connection:" << err;
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}
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}
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int main(int argc, char *argv[])
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{
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QApplication app(argc, argv);
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QMainWindow mainWin;
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mainWin.setWindowTitle(QObject::tr("Qt SQL Browser"));
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Browser browser(&mainWin);
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mainWin.setCentralWidget(&browser);
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QMenu *fileMenu = mainWin.menuBar()->addMenu(QObject::tr("&File"));
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fileMenu->addAction(QObject::tr("Add &Connection..."), &browser,
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&Browser::openNewConnectionDialog);
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fileMenu->addSeparator();
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fileMenu->addAction(QObject::tr("&Quit"), qApp, &QApplication::quit);
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QMenu *helpMenu = mainWin.menuBar()->addMenu(QObject::tr("&Help"));
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helpMenu->addAction(QObject::tr("About"), &browser, &Browser::about);
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helpMenu->addAction(QObject::tr("About Qt"), qApp, &QApplication::aboutQt);
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QObject::connect(&browser, &Browser::statusMessage, &mainWin,
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[&mainWin](const QString &text) { mainWin.statusBar()->showMessage(text); });
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addConnectionsFromCommandline(app.arguments(), &browser);
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mainWin.show();
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if (QSqlDatabase::connectionNames().isEmpty())
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QMetaObject::invokeMethod(&browser, "addConnection", Qt::QueuedConnection);
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return app.exec();
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}
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