XkbGetState - Man Page

Status XkbGetState (Display *display, unsigned int device_spec, XkbStatePtr state_return);

display

connection to the X server

device_spec

device ID, or XkbUseCoreKbd

state_return

backfilled with Xkb state

The XkbGetState function queries the server for the current keyboard state, waits  for a reply, and then backfills state_return with the results.

All group values are expressed as group indices in the range [0..3]. Modifiers  and the compatibility modifier state values are expressed as the bitwise union  of the core X11 modifier masks. The pointer button state is reported as in the  core X11 protocol.