xcb_shm_query_version_reply3
Query the version of the mit-shm extension.
Part of xcb_shm_query_version(3).
Usage
Request function
xcb_shm_query_version_cookie_t xcb_shm_query_version(xcb_connection_t
*conn,
Reply datastructure
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]
;
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.
Overview
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.
Releases
6 releases since Debian 9 (Stretch); the text changed 4 times.