I finally found a solution which seems to work in my case. I added the Qt.MSWindowsFixedSizeDialogHint window flag, which seems to fix the issue.

So below is the modified code:

ApplicationWindow { // common properties id: awMainForm width: 602 height: 728 flags: Qt.Window | Qt.FramelessWindowHint | Qt.MSWindowsFixedSizeDialogHint visible: true // form content isn't relevant ... }

@pmh4514

maybe you can use the QDesktopWidget

int QDesktopWidget::screenNumber(const QWidget * widget = 0) const Returns the index of the screen that contains the largest part of widget, or -1 if the widget not on a screen.

Thanks, I'll have a look at it.