KeyRelease event, serial 31, synthetic NO, window 0x2a00001,
    root 0x75, subw 0x0, time 686636820, (-284,371), root:(814,396),
    state 0x0, keycode 162 (keysym 0x0, NoSymbol), same_screen YES,
    XLookupString gives 0 bytes:
    XFilterEvent returns: False