x11r4 man page for xkbaddgeomoverlaykey

XkbAddGeomOverlayKey(3) 					   XKB FUNCTIONS					   XkbAddGeomOverlayKey(3)

NAME
       XkbAddGeomOverlayKey - Add a key to an existing overlay row

SYNOPSIS
       XkbOverlayKeyPtr XkbAddGeomOverlayKey ( overlay, row, under )
	     XkbOverlayPtr overlay;
	     XkbRowPtr row;
	     char * under;

ARGUMENTS
       - overlay
	      overlay to be updated

       - row  row in overlay to be updated

       - under
	      primary name of the key to be considered

DESCRIPTION
       Xkb  provides functions to add a single new element to the top-level keyboard geometry. In each case the num_ * fields of the corresponding
       structure is incremented by 1. These functions do not change sz_* unless there is no more room in the array. Some of these  functions  fill
       in  the	values	of the element's structure from the arguments. For other functions, you must explicitly write code to fill the structure's
       elements.

       The top-level geometry description includes a list of geometry properties.  A geometry property associates  an  arbitrary  string  with	an
       equally	arbitrary  name.  Programs  that display images of keyboards can use geometry properties as hints, but they are not interpreted by
       Xkb. No other geometry structures refer to geometry properties.

       XkbAddGeomOverlayKey adds one key to the row in the overlay.  If there is no key named under in the row of the underlying  section,  XkbAd-
       dGeomOverlayKey returns NULL.

STRUCTURES
	   typedef struct _XkbOverlayKey {
	       XkbKeyNameRec	       over;	  /* name of this overlay key */
	       XkbKeyNameRec	       under;	  /* name of the key under this overlay key */
	   } XkbOverlayKeyRec,*XkbOverlayKeyPtr;

X Version 11							   libX11 1.2.1 					   XkbAddGeomOverlayKey(3)