NAME

       XkbAddGeomOverlayKey - Add a key to an existing overlay row

SYNOPSIS

       XkbOverlayKeyPtr XkbAddGeomOverlayKey (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, XkbAddGeomOverlayKey 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;