xcb_shm_query_version(3) XCB Requests xcb_shm_query_version(3)

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

#include <xcb/shm.h>

xcb_shm_query_version_cookie_t xcb_shm_query_version(xcb_connection_t *conn,

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;

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);

The XCB connection to X11.

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.
The sequence number of the last request processed by the X11 server.
The length of the reply, in words (a word is 4 bytes).
True if the server supports shared pixmaps, otherwise false.
The major version of the extension supported.
The minor version of the extension supported.
The UID of the server.
The GID of the server.
TODO: NOT YET DOCUMENTED.

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.

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.

This request does never generate any errors.

xcb-requests(3)

Generated from shm.xml. Contact xcb@lists.freedesktop.org for corrections and improvements.

libxcb 1.15 X Version 11