QWidget / X11: Prevent window from beeing activated/focussed by mouse clicks

问题

I would like to develop a system-wide onscreen keyboard in Qt/QML. Injecting key-events via xlib works fine.

My problem now: If a keyboard-button is clicked, the window with the selected input field will lose the focus. In consequence, the key event will not be delivered to the previously selected input field.

So does anybody know how to prevent a QWidget from beeing activated/focussed by mouse-clicks? Every hint is welcome and a code examples would be great!

Thank you very much in advance, Frime

来源：https://stackoverflow.com/questions/29097363/qwidget-x11-prevent-window-from-beeing-activated-focussed-by-mouse-clicks