Bring Window to the 2nd Monitor

cbens

I have 2 Monitors and want to put a Window to let's say Monitor 2. The following Example works perfect compiled with Qt 5.15.2. The window appears on the monitor I defined. But with Qt 6.7.3 it always appears on the Monitor I started the Application from.
(Using Rocky 9.4 Linux, Gnome 40.4, Wayland)

import QtQuick 2.15
import QtQuick.Window 2.15

Window {
    screen: Qt.application.screens[1]   // Monitor to show Window

    x: screen.virtualX
    y: screen.virtualY

    width: 640
    height: 480
    visible: true
    title: qsTr("Hello World")
}

cbens

In the meantime I have found a workaround which only works for full screen.

Window {
    width: 640
    height: 480
    visible: false
    title: qsTr("Hello World")

    //x: 0   // Show on left Monitor
    x: 2000   // Show on right Monitor


    Component.onCompleted: {
        showFullScreen()   // show Window on left or right Monitor (depending on x)
        //showMaximized()  // shows window always on Monitor where I started the app
        //showNormal()   // shows window always on Monitor where I started the app
        //show()         // shows window always on Monitor where I started the app
    }
}

(Same on RockyLinux 9.5 and Qt 6.8.3)

cbens

Same with Fedora 42, Gnome 48

JonB

@cbens
Because there are so many issues with window positioning under Wayland, did you try switching to xcb to see whether it works there?

cbens

You're right, thanks. Running with paramter "-platform xcb" works. (Then, of course, it is no longer Wayland)