How does the Window's Flag "Qt::Desktop"works?

[tubbadu]

hello there! I'm experimenting on creating a really simple desktop environment in Qt following this guide and I'm trying to create a Qt app to just show a wallpaper and with a few buttons to run some application

I'd like to do this in QML, using C++ just where needed (e.g.: run processes)

in the Window Type docs there is the Qt::Desktop flag:

Qt::Desktop | Indicates that this widget is the desktop. This is the type for QDesktopWidget.

so I tried setting:

Window{
    id: window
    flags: Qt.Desktop
    Rectangle{
        color: "red"
    }
}

it builds correctly, but when I try to run it it just displays nothing

What is the correct way to use this? are there better ways to do this?

I know I'm probably not going to finish this project, it's just meant to learn something new :D