How to get event of changing current keyboard layout in Unix?

Question

I searched simple solution, but could not find.

I need getting event of changing system keyboard layout for setting this in my application.

QApplication::keyboardInputLocale() is not suitable, because I need to catch system layout, not the application.

Xkblib also is not suitable, because I use Qt project and this library can lead to crashes ( QEvent , QTimer ).

Answer 1

X sends a MapNotifyEvent (not to be confused with KeymapNotify) when the key mapping is changed (tested with xmodmap, but should work for other methods as well). I don't know if you can get at raw X events under Qt, but if you can, I think that's the event to look for.