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CentOS 7.0 - man page for xkbgetnamedindicator (centos section 3)

XkbGetNamedIndicator(3) 		  XKB FUNCTIONS 		  XkbGetNamedIndicator(3)

       XkbGetNamedIndicator - Look up the indicator map and other information for an indicator by

       Bool XkbGetNamedIndicator (Display *dpy, unsigned int dev_spec, Atom name, int  *ndx_rtrn,
	      Bool *state_rtrn, XkbIndicatorMapPtr map_rtrn, Bool *real_rtrn);

       - dpy  connection to the X server

       - dev_spec
	      keyboard device ID, or XkbUseCoreKbd

       - name name of the indicator to be retrieved

       - ndx_rtrn
	      backfilled with the index of the retrieved indicator

       - state_rtrn
	      backfilled with the current state of the retrieved indicator

       - map_rtrn
	       backfilled with the mapping for the retrieved indicator

       - real_rtrn
	      backfilled with True if the named indicator is real (physical)

       Xkb  also  allows  applications to refer to indicators by name. Use XkbGetNames to get the
       indicator names. Using names eliminates the need for hard-coding bitmask values	for  par-
       ticular	keyboards.  For  example,  instead  of	using  vendor-specific	constants such as
       WSKBLed_ScrollLock mask on Digital workstations or XLED_SCROLL_LOCK on  Sun  workstations,
       you  can  instead  use  XkbGetNamedIndicator to look up information on the indicator named
       "Scroll Lock."

       If the device specified by device_spec has an indicator named  name,  XkbGetNamedIndicator
       returns	True  and populates the rest of the parameters with information about the indica-
       tor. Otherwise, XkbGetNamedIndicator returns False.

       The ndx_rtrn field returns the zero-based index of the named indicator. This index is  the
       bit  position  to use in any function call that requires a mask of indicator bits, as well
       as the indicator's index into the XkbIndicatorRec array	of  indicator  maps.   state_rtrn
       returns	the  current  state  of  the  named indicator (True = on, False = off).  map_rtrn
       returns the indicator map for the named indicator. In addition, if the indicator is mapped
       to a physical LED, the real_rtrn parameter is set to True.

       Each  of the " _rtrn " arguments is optional; you can pass NULL for any unneeded " _rtrn "

       True	      The XkbGetNamedIndicator function returns True if the device  specified  by
		      device_spec has an indicator named name.

       False	      The  XkbGetNamedIndicator function returns False if the device specified by
		      device_spec does not have an indicator named name.


X Version 11				   libX11 1.6.0 		  XkbGetNamedIndicator(3)

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