XkbKeycodeToKeysym - Finds the keysym bound to a particular key at a specified group and shift level

dpy    connection to X server

       kc     key of interest

       group  group of interest

       level  shift level of interest

XkbKeycodeToKeysym returns the keysym bound to a particular group and shift level for a particular key on
       the  core  keyboard.  If kc is not a legal keycode for the core keyboard, or if group or level are out of
       range for the specified key, XkbKeycodeToKeysym returns NoSymbol.

X Version 11                                      libX11 1.8.12                            XkbKeycodeToKeysym(3)

       XkbKeycodeToKeysym - Finds the keysym bound to a particular key at a specified group and shift level

KeySymXkbKeycodeToKeysym(Display*dpy,KeyCodekc,unsignedintgroup,unsignedintlevel);