typedef struct {
    unsigned int mode;
    unsigned int mod;
    KeySym keysym;
    void (*func)(Arg *);
    Arg arg;
} Key;

// user friendly names for all the modifiers we're using, but there are many more
#define Ctrl ControlMask
#define Shift ShiftMask
#define Alt Mod1Mask
#define AltGr Mod3Mask
#define Super Mod4Mask
#define ShiftGr Mod5Mask

static void updatenumlockmask(void);
static void keypress(XEvent *e);
static void grabkeyboard(void);
static void getcapsstate(void);

static Key ckeys[256];
static char capstext[16];