No primaryScreen property

[andr1972]

Before change to SingleApplication I have

int main(int argc, char **argv)
{
    QApplication app(argc, argv);

    QScreen *screen = QGuiApplication::primaryScreen();
    QRect  screenGeometry = screen->geometry();

    MainWindow mainWindow;
    mainWindow.resize(int(screenGeometry.width()*0.8), int(screenGeometry.height()*0.8));
    mainWindow.show();
    return app.exec();
}

After change QApplication to SingleApplication, screen is NULL. How can this be a workaround?

[itay-grudev]

Did you set the QAPPLICATION_CLASS macro to QGuiApplication?

On Sat, 13 Aug 2022, 21:18 Andrzej Borucki, @.***> wrote:

Before change to SingleApplication I have

int main(int argc, char **argv) { QApplication app(argc, argv);

QScreen *screen = QGuiApplication::primaryScreen();
QRect  screenGeometry = screen->geometry();

MainWindow mainWindow;
mainWindow.resize(int(screenGeometry.width()*0.8), int(screenGeometry.height()*0.8));
mainWindow.show();
return app.exec();

}

After change QApplication to SingleApplication, screen is NULL. How can this be a workaround?

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