**XkbOutlinePtr XkbAddGeomOutline****(XkbShapePtr***shape***,****int***sz_points***);**

*-*shape- shape to be updated
*-*sz_points- number of points to be reserved

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.

An outline
consists of an arbitrary number of points. *XkbAddGeomOutline* adds an outline
to the specified *shape* by reserving *sz_points* points for it. The new
outline is allocated and zeroed. *XkbAddGeomOutline* returns NULL if any
of the parameters is empty or if it was not able to allocate space. To
allocate space for an arbitrary number of outlines to a shape, use *XkbAllocGeomOutlines.*

typedef struct _XkbOutline { unsigned short num_points; /* number of points in the outline */ unsigned short sz_points; /* size of the points array */ unsigned short corner_radius; /* draw corners as circles with this radius */ XkbPointPtr points; /* array of points defining the outline */ } XkbOutlineRec, *XkbOutlinePtr;