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/****************************************************************************
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** Copyright (C) 2016 Olivier Goffart <ogoffart@woboq.com>
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** Contact: https://www.qt.io/licensing/
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** This file is part of the documentation of the Qt Toolkit.
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** $QT_BEGIN_LICENSE:BSD$
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** Commercial License Usage
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** accordance with the commercial license agreement provided with the
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** and conditions see https://www.qt.io/terms-conditions. For further
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** information use the contact form at https://www.qt.io/contact-us.
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** Alternatively, you may use this file under the terms of the BSD license
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** "Redistribution and use in source and binary forms, with or without
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** modification, are permitted provided that the following conditions are
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** * Redistributions of source code must retain the above copyright
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** notice, this list of conditions and the following disclaimer.
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** * Redistributions in binary form must reproduce the above copyright
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** notice, this list of conditions and the following disclaimer in
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** the documentation and/or other materials provided with the
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** from this software without specific prior written permission.
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** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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****************************************************************************/
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#include <QtCore/QThread>
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class WorkerThread : public QThread
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void run() Q_DECL_OVERRIDE {
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/* ... here is the expensive or blocking operation ... */
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emit resultReady(result);
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void resultReady(const QString &s);
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void MyObject::startWorkInAThread()
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WorkerThread *workerThread = new WorkerThread(this);
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connect(workerThread, &WorkerThread::resultReady, this, &MyObject::handleResults);
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connect(workerThread, &WorkerThread::finished, workerThread, &QObject::deleteLater);
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workerThread->start();
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class Worker : public QObject
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void doWork(const QString ¶meter) {
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/* ... here is the expensive or blocking operation ... */
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emit resultReady(result);
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void resultReady(const QString &result);
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class Controller : public QObject
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Worker *worker = new Worker;
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worker->moveToThread(&workerThread);
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connect(&workerThread, &QThread::finished, worker, &QObject::deleteLater);
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connect(this, &Controller::operate, worker, &Worker::doWork);
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connect(worker, &Worker::resultReady, this, &Controller::handleResults);
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workerThread.start();
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void handleResults(const QString &);
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void operate(const QString &);