A "semi-private" API exists for applications that want to avoid the XCB top-half and work directly with the bottom half. The file "xcbxlib.h" contains the interface specification. It is an extremely small interface.

xcb_get_request_sent

(xcb_xlib.c)

unsigned int xcb_get_request_sent(xcb_connection_t *c)

Returns the XCB sequence number of the last request sent on the given connection. Must be used while the connection is locked, using the xlib_lock functions below.

c

an XCB connection

Returns

a sequence number.

xcb_xlib_lock

void xcb_xlib_lock(xcb_connection_t *c)

c

an XCB connection

xcb_xlib_unlock

void xcb_xlib_unlock(xcb_connection_t *c)

c

an XCB connection