xcb_poly_line(3) XCB Requests xcb_poly_line(3)
NAME
xcb_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_g_context_error_t
TODO: reasons?
xcb_match_error_t
TODO: reasons?
xcb_value_error_t
TODO: reasons?
EXAMPLE
/*
* Draw a straight line.
*
*/
void my_example(xcb_connection_t *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 ALSO
xcb-requests(3), xcb-examples(3)
AUTHOR
Generated from xproto.xml. Contact xcb@lists.freedesktop.org for cor-
rections and improvements.
X Version 11 libxcb 1.14 xcb_poly_line(3)
xorg-libxcb 1.14 - Generated Sun Mar 15 09:32:18 CDT 2020