Keyboard shortcuts for non-English keyboard layouts

Hey community,

I am working on a project where I want to introduce a keyboard shortcut for a particular action.

private void shortcutKeyHandler() {
    Event.addNativePreviewHandler(new Event.NativePreviewHandler() {
        @Override
        public void onPreviewNativeEvent(Event.NativePreviewEvent event) {
          NativeEvent nativeEvent = event.getNativeEvent();
          if (event.getTypeInt() == Event.ONKEYDOWN && nativeEvent.getAltKey() && nativeEvent.getKeyCode() == 191 && !db.isShowing()) {
            nativeEvent.preventDefault();
            execute();
          }
        }
      });
    }

In the code, I implemented a shortcut (Alt + /) to display a dialog box. While it works well with English keyboard layouts, the problem arises with other layouts where the Slash key (keycode 191) generates a different keycode.

Is there some workaround with the help of JSNI?

I would greatly appreciate any help in determining how to check the character code and verify if the Alt key is pressed.

Thanks in advance 

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