xcb_composite_query_version(3) XCB Requests 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.

X Version 11 libxcb 1.16.1 xcb_composite_query_version(3)