xcb_shm_attach(3) XCB Requests xcb_shm_attach(3)
NAME
xcb_shm_attach - Attach a System V shared memory segment.
SYNOPSIS
#include <xcb/shm.h>
Request function
xcb_void_cookie_t xcb_shm_attach(xcb_connection_t *conn,
xcb_shm_seg_t shmseg, uint32_t shmid, uint8_t read_only);
REQUEST ARGUMENTS
conn The XCB connection to X11.
shmseg A shared memory segment ID created with xcb_generate_id().
shmid The System V shared memory segment the server should map.
read_only True if the segment shall be mapped read only by the X11 serv-
er, otherwise false.
DESCRIPTION
Attach a System V shared memory segment to the server. This will fail
unless the server has permission to map the segment. The client may de-
stroy the segment as soon as it receives a XCB_SHM_COMPLETION event with
the shmseg value in this request and with the appropriate serial number.
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_shm_attach_checked. See xcb-requests(3) for details.
ERRORS
This request does never generate any errors.
SEE ALSO
xcb-requests(3)
AUTHOR
Generated from shm.xml. Contact xcb@lists.freedesktop.org for correc-
tions and improvements.
X Version 11 libxcb 1.17.0 xcb_shm_attach(3)
Generated by dwww version 1.16 on Sat Oct 3 07:35:05 CEST 2026.