xcb_sync_query_counter

Section: XCB Requests (3)
Updated: libxcb 1.13.1
Page Index

NAME

xcb_sync_query_counter -

SYNOPSIS

#include <xcb/sync.h>

Request function

: xcb_sync_query_counter_cookie_t xcb_sync_query_counter(xcb_connection_t *conn, xcb_sync_counter_t counter);

Reply datastructure


typedef struct xcb_sync_query_counter_reply_t {
    uint8_t          response_type;
    uint8_t          pad0;
    uint16_t         sequence;
    uint32_t         length;
    xcb_sync_int64_t counter_value;
} xcb_sync_query_counter_reply_t;

Reply function

: xcb_sync_query_counter_reply_t *xcb_sync_query_counter_reply(xcb_connection_t *conn, xcb_sync_query_counter_cookie_t cookie, xcb_generic_error_t **e);

REQUEST ARGUMENTS

conn: The XCB connection to X11.
counter: TODO: NOT YET DOCUMENTED.

REPLY FIELDS

response_type: The type of this reply, in this case XCB_SYNC_QUERY_COUNTER. 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).
counter_value: TODO: NOT YET DOCUMENTED.

DESCRIPTION

RETURN VALUE

Returns an xcb_sync_query_counter_cookie_t. Errors have to be handled when calling the reply function xcb_sync_query_counter_reply.

If you want to handle errors in the event loop instead, use xcb_sync_query_counter_unchecked. See xcb-requests(3) for details.

ERRORS

This request does never generate any errors.

AUTHOR

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