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.

AUTHOR

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