xcb_poly_line(3) XCB Requests xcb_poly_line(3)NAMExcb_poly_line - draw lines
SYNOPSIS
#include <xcb/xproto.h>
Request function
xcb_void_cookie_t xcb_poly_line(xcb_connection_t *conn,
uint8_t coordinate_mode, xcb_drawable_t drawable,
xcb_gcontext_t gc, uint32_t points_len, const
xcb_point_t *points);
REQUEST ARGUMENTS
conn The XCB connection to X11.
coordinate_mode
One of the following values:
XCB_COORD_MODE_ORIGIN
Treats all coordinates as relative to the origin.
XCB_COORD_MODE_PREVIOUS
Treats all coordinates after the first as relative
to the previous coordinate.
drawable The drawable to draw the line(s) on.
gc The graphics context to use.
points_len
The number of xcb_point_t structures in points.
points An array of points.
DESCRIPTION
Draws points_len-1 lines between each pair of points (point[i],
point[i+1]) in the points array. The lines are drawn in the order list‐
ed in the array. They join correctly at all intermediate points, and
if the first and last points coincide, the first and last lines also
join correctly. For any given line, a pixel is not drawn more than
once. If thin (zero line-width) lines intersect, the intersecting pix‐
els are drawn multiple times. If wide lines intersect, the intersecting
pixels are drawn only once, as though the entire request were a single,
filled shape.
RETURN VALUE
Returns an xcb_void_cookie_t. Errors (if any) have to be handled in the
event loop.
If you want to handle errors directly with xcb_request_check instead,
use xcb_poly_line_checked. See xcb-requests(3) for details.
ERRORS
xcb_drawable_error_t
TODO: reasons?
xcb_gc_error_t
TODO: reasons?
xcb_value_error_t
TODO: reasons?
xcb_match_error_t
TODO: reasons?
EXAMPLE
/*
* Draw a straight line.
*
*/
void my_example(xcb_connection *conn, xcb_drawable_t drawable, xcb_gcontext_t gc) {
xcb_poly_line(conn, XCB_COORD_MODE_ORIGIN, drawable, gc, 2,
(xcb_point_t[]) { {10, 10}, {100, 10} });
xcb_flush(conn);
}
SEE ALSOxcb-requests(3), xcb-examples(3)AUTHOR
Generated from xproto.xml. Contact xcb@lists.freedesktop.org for cor‐
rections and improvements.
XCB 2013-10-29 xcb_poly_line(3)
