05fc3aef53
Replace the current license disclaimer in files by a SPDX-License-Identifier. Files that have to be modified by hand are modified. License files are organized under LICENSES directory. Task-number: QTBUG-67283 Change-Id: Id880c92784c40f3bbde861c0d93f58151c18b9f1 Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org> Reviewed-by: Lars Knoll <lars.knoll@qt.io> Reviewed-by: Jörg Bornemann <joerg.bornemann@qt.io>
76 lines
1.9 KiB
C++
76 lines
1.9 KiB
C++
// Copyright (C) 2021 The Qt Company Ltd.
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// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
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#include <QtGui>
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class EventTarget : public QObject
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{
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Q_OBJECT
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protected:
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bool event(QEvent *evt)
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{
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if (evt->type() == QEvent::User) {
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qDebug() << "User event on thread" << QThread::currentThread();
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return true;
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}
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return QObject::event(evt);
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}
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};
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class EventPosterWindow: public QRasterWindow
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{
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public:
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EventPosterWindow(EventTarget *target)
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:m_target(target)
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{ }
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void paintEvent(QPaintEvent *ev) override {
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QPainter p(this);
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p.fillRect(ev->rect(), QColorConstants::Svg::deepskyblue);
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p.drawText(50, 100, "Application has started. Click to post events.\n See the developer tools console for debug output");
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}
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void mousePressEvent(QMouseEvent *) override {
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qDebug() << "Posting events from thread" << QThread::currentThread();
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QGuiApplication::postEvent(m_target, new QEvent(QEvent::User));
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QTimer::singleShot(500, m_target, []() {
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qDebug() << "Timer event on secondary thread" << QThread::currentThread();
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});
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}
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public:
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EventTarget *m_target;
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};
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class SecondaryThread : public QThread
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{
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public:
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void run() override {
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qDebug() << "exec on secondary thread" << QThread::currentThread();
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exec();
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}
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};
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// This example demonstrates how to start a secondary thread event loop
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int main(int argc, char **argv)
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{
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QGuiApplication app(argc, argv);
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EventTarget eventTarget;
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EventPosterWindow window(&eventTarget);
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window.show();
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SecondaryThread thread;
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eventTarget.moveToThread(&thread);
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#if QT_CONFIG(thread)
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thread.start();
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#else
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qDebug() << "Warning: This test requires a multithreaded build of Qt for WebAssembly";
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#endif
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return app.exec();
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}
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#include "main.moc"
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