SuSE 11.3 - man page for xkbgetstate (suse section 3)

XkbGetState(3)				  XKB FUNCTIONS 			   XkbGetState(3)

NAME
       XkbGetState -  Obtains the keyboard state

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

ARGUMENTS
       display
	      connection to the X server

       device_spec
	      device ID, or XkbUseCoreKbd

       state_return
	      backfilled with Xkb state

DESCRIPTION
       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.

X Version 11				   libX11 1.3.2 			   XkbGetState(3)