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X11R7.4 - man page for xkbaddgeomsection (x11r4 section 3)

XkbAddGeomSection(3)			  XKB FUNCTIONS 		     XkbAddGeomSection(3)

       XkbAddGeomSection - Add one section to an existing keyboard geometry

       XkbSectionPtr XkbAddGeomSection ( geom, name, sz_rows, sz_doodads, sz_overlays )
	     XkbGeometryPtr geom;
	     Atom name;
	     int sz_rows;
	     int sz_doodads;
	     int sz_overlays;

       - geom geometry to be updated

       - name name of the new section

       - sz_rows
	      number of rows to reserve in the section

       - sz_doodads
	      number of doodads to reserve in the section

       - sz_overlays
	      number of overlays to reserve in the section

       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 dis-
       play  images  of  keyboards  can use geometry properties as hints, but they are not inter-
       preted by Xkb. No other geometry structures refer to geometry properties.

       A keyboard geometry contains an arbitrary number of sections.  XkbAddGeomSection adds  one
       section	to  an	existing  keyboard geometry geom.  The new section contains space for the
       number of rows, doodads, and overlays specified by sz_rows, sz_doodads,	and  sz_overlays.
       The  new  section is allocated and zeroed and given the name specified by name.	If a sec-
       tion with name name already exists in the geometry, a pointer to the existing  section  is
       returned.   XkbAddGeomSection  returns NULL if any of the parameters is empty or if it was
       not able to allocate space for the section. To allocate space for an arbitrary  number  of
       sections to a geometry, use XkbAllocGeomSections.

       typedef struct _XkbSection {
	   Atom 		   name;	/* section name */
	   unsigned char	   priority;	/* drawing priority, 0=>highest, 255=>lowest */
	   short		   top; 	/* top coordinate of section origin */
	   short		   left;	/* left coordinate of row origin */
	   unsigned short	   width;	/* section width, in mm/10 */
	   unsigned short	   height;	/* section height, in mm/10 */
	   short		   angle;	/* angle of section rotation, counterclockwise */
	   unsigned short	   num_rows;	/* number of rows in the rows array */
	   unsigned short	   num_doodads; /* number of doodads in the doodads array */
	   unsigned short	   num_overlays; /* number of overlays in the overlays array */
	   unsigned short	   sz_rows;	 /* size of the rows array */
	   unsigned short	   sz_doodads;	 /* size of the doodads array */
	   unsigned short	   sz_overlays;  /* size of the overlays array */
	   XkbRowPtr		   rows;	 /* section rows array */
	   XkbDoodadPtr 	   doodads;	 /* section doodads array */
	   XkbBoundsRec 	   bounds;	 /* bounding box for the section, before rotation*/
	   XkbOverlayPtr	   overlays;	 /* section overlays array */
       } XkbSectionRec, *XkbSectionPtr;

       top  and  left  are  the origin of the section, relative to the origin of the keyboard, in
       mm/10. angle is in 1/10 degrees.


X Version 11				   libX11 1.2.1 		     XkbAddGeomSection(3)

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