Multiple windows in a single project

Question

I have a requirement for my project to display two QML Windows each on one of the screen (one sender, one receiver). Both of the .qml requires me to in

Answer 1

That can be done easier, for example:

main.qml

import QtQuick 2.3
import QtQuick.Window 2.2

Item {

    Window {
        objectName: "wnd1"
        visible: true
    }

    Window {
        objectName: "wnd2"
        visible: true
    }
}

And so you can access these windows from C++ code:

main.cpp

QQmlApplicationEngine engine;
    engine.load(QUrl(QStringLiteral("qrc:/main.qml")));

    QQuickWindow *wnd1 = engine.rootObjects()[0]->findChild("wnd1");
    if(wnd1)
        wnd1->setTitle("Server");
    QQuickWindow *wnd2 = engine.rootObjects()[0]->findChild("wnd2");
    if(wnd2)
        wnd2->setTitle("Client");

To catch a closing event you should use QQuickWindow::closing event