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XkbAddGeomSection(3) XKB FUNCTIONS XkbAddGeomSection(3)
NAME
XkbAddGeomSection - Add one section to an existing keyboard geometry
SYNOPSIS
XkbSectionPtr XkbAddGeomSection (XkbGeometryPtr geom, Atom name, int sz_rows, int sz_doo-
dads, int sz_overlays);
ARGUMENTS
- 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
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 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.
STRUCTURES
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.
SEE ALSO
XkbAllocGeomSections(3)
X Version 11 libX11 1.6.7 XkbAddGeomSection(3)
Generated by $Id: phpMan.php,v 4.55 2007/09/05 04:42:51 chedong Exp $ Author: Che Dong
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