XKeymapEvent - KeymapNotify event structure
The structure for KeymapNotify events contains:
generated on EnterWindow and FocusIn when KeymapState selected
typedef struct {
int type; KeymapNotify
unsigned long serial; # of last request processed by server
Bool send_event; true if this came from a SendEvent request
Display *display; Display the event was read from
Window window;
char key_vector[32];
} XKeymapEvent;