xcb_composite_query_version(3)

NAME
xcb_composite_query_version - Negotiate the version of Composite

SYNOPSIS
#include <xcb/composite.h>

  Request function

xcb_composite_query_version_cookie_t xcb_composite_query_version(xcb_connection_t *conn, uint32_t client_major_version, uint32_t client_minor_version);

  Reply datastructure

typedef struct xcb_composite_query_version_reply_t {
    uint8_t  response_type;
    uint8_t  pad0;
    uint16_t sequence;
    uint32_t length;
    uint32_t major_version;
    uint32_t minor_version;
    uint8_t  pad1[16];
} xcb_composite_query_version_reply_t;

  Reply function

xcb_composite_query_version_reply_t *xcb_composite_query_version_reply(xcb_connection_t *conn, xcb_composite_query_version_cookie_t cookie, xcb_generic_error_t **e);

REQUEST ARGUMENTS

conn
    The XCB connection to X11.

client_major_version
    The major version supported by the client.

client_minor_version
    The minor version supported by the client.

REPLY FIELDS

response_type
    The type of this reply, in this case XCB_COMPOSITE_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).

major_version
    The major version chosen by the server.

minor_version
    The minor version chosen by the server.

DESCRIPTION
This negotiates the version of the Composite extension. It must be precede all other requests using Composite. Failure to do so will cause a BadRequest error.

RETURN VALUE
Returns an xcb_composite_query_version_cookie_t. Errors have to be handled when calling the reply function xcb_composite_query_version_reply. If you want to handle errors in the event loop instead, use xcb_composite_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 composite.xml. Contact xcb@lists.freedesktop.org for corrections and improvements.