xcb_shm_query_version(3) XCB Requests xcb_shm_query_version(3)

NAME

xcb_shm_query_version - Query the version of the MIT-SHM extension.

SYNOPSIS

#include <xcb/shm.h>

Request function

xcb_shm_query_version_cookie_t
xcb_shm_query_version(xcb_connection_t *conn,

Reply datastructure

typedef struct xcb_shm_query_version_reply_t {
uint8_t response_type;
uint8_t shared_pixmaps;
uint16_t sequence;
uint32_t length;
uint16_t major_version;
uint16_t minor_version;
uint16_t uid;
uint16_t gid;
uint8_t pixmap_format;
uint8_t pad0[15];
} xcb_shm_query_version_reply_t;

Reply function

xcb_shm_query_version_reply_t
*xcb_shm_query_version_reply(xcb_connection_t *conn,
xcb_shm_query_version_cookie_t cookie,
xcb_generic_error_t **e);

REQUEST ARGUMENTS

conn The XCB connection to X11.

REPLY FIELDS

response_type
The type of this reply, in this case XCB_SHM_QUERY_VERSION.
This field is also present in the xcb_generic_reply_t and
can be used to tell replies apart from each other.

sequence The sequence number of the last request processed by the
X11 server.

length The length of the reply, in words (a word is 4 bytes).

shared_pixmaps
True if the server supports shared pixmaps, otherwise
false.

major_version
The major version of the extension supported.

minor_version
The minor version of the extension supported.

uid The UID of the server.

gid The GID of the server.

pixmap_format
TODO: NOT YET DOCUMENTED.

DESCRIPTION

This is used to determine the version of the MIT-SHM extension
supported by the X server. Clients MUST NOT make other requests in
this extension until a reply to this requests indicates the X server
supports them.

RETURN VALUE

Returns an xcb_shm_query_version_cookie_t. Errors have to be handled
when calling the reply function xcb_shm_query_version_reply.

If you want to handle errors in the event loop instead, use
xcb_shm_query_version_unchecked. 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
corrections and improvements.

X Version 11 libxcb 1.16.1 xcb_shm_query_version(3)