c052ee9032
According to QUIP-18 [1], all tests file should be LicenseRef-Qt-Commercial OR GPL-3.0-only [1]: https://contribute.qt-project.org/quips/18 Task-number: QTBUG-121787 Change-Id: I9657df5d660820e56c96d511ea49d321c54682e8 Reviewed-by: Christian Ehrlicher <ch.ehrlicher@gmx.de> (cherry picked from commit ff1039c217fb1ae03b701557a5a50c2112555991)
67 lines
1.7 KiB
C++
67 lines
1.7 KiB
C++
// Copyright (C) 2021 The Qt Company Ltd.
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// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only
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#include <QtGui>
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// This example demonstrates how to create QGuiApplication
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// without calling exec(), and then exiting main() without
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// shutting down the Qt event loop.
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class ClickWindow: public QRasterWindow
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{
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public:
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ClickWindow() {
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qDebug() << "ClickWindow constructor";
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}
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~ClickWindow() {
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qDebug() << "ClickWindow destructor";
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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. 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() << "mousePressEvent(): calling QGuiApplication::quit()";
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QGuiApplication::quit();
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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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qDebug() << "main(): Creating QGuiApplication object";
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QGuiApplication *app = new QGuiApplication(argc, argv);
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QObject::connect(app, &QCoreApplication::aboutToQuit, [](){
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qDebug() << "QCoreApplication::aboutToQuit";
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});
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qDebug() << "main(): Creating ClickWindow object";
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ClickWindow *window = new ClickWindow();
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window->show();
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// We can exit main; the Qt event loop and the emscripten runtime
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// will keep running, as long as Emscriptens EXIT_RUNTIME option
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// has not been enabled.
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qDebug() << "main(): exit";
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}
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// Global variables are created before main() as usual, but not destroyed
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class Global
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{
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public:
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Global() {
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qDebug() << "Global constructor";
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}
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~Global() {
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qDebug() << "Global destructor"; // <- will not be printed
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}
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};
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Global global;
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