Implement mainwindow example

Sine Striker

2023-12-05 f8975a7d449bac21a2fdbc1a8ca85d1f5b99b362

 src/quick/quickwindowagent.h

@@ -21,15 +21,15 @@
    public:
        bool setup(QQuickWindow *window);

        bool isHitTestVisible(QQuickItem *item) const;
        void setHitTestVisible(QQuickItem *item, bool visible);
        void setHitTestVisible(const QRect &rect, bool visible);
        QQuickItem *titleBar() const;
        void setTitleBar(QQuickItem *item);

        QQuickItem *systemButton(SystemButton button) const;
        void setSystemButton(SystemButton button, QQuickItem *item);

        QQuickItem *titleBar() const;
        void setTitleBar(QQuickItem *item);
        bool isHitTestVisible(QQuickItem *item) const;
        void setHitTestVisible(QQuickItem *item, bool visible = true);
        void setHitTestVisible(const QRect &rect, bool visible = true);

    Q_SIGNALS:
        void titleBarWidgetChanged(QQuickItem *item);