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XkbAddGeomOverlayKey(3)          XKB FUNCTIONS         XkbAddGeomOverlayKey(3)

       XkbAddGeomOverlayKey - Add a key to an existing overlay row

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

       - overlay
              overlay to be updated

       - row  row in overlay to be updated

       - under
              primary name of the key to be considered

       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  ele-

       The  top-level geometry description includes a list of geometry proper-
       ties.  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,  XkbAddGeo-
       mOverlayKey returns NULL.

           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 1.1.5          XkbAddGeomOverlayKey(3)