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| author | marha <marha@users.sourceforge.net> | 2011-03-21 08:51:23 +0000 |
|---|---|---|
| committer | marha <marha@users.sourceforge.net> | 2011-03-21 08:51:23 +0000 |
| commit | b63d68318fdce5002f42a818f3dd3dff126ec2c2 (patch) | |
| tree | 2b1ecbb851674f7aa2bbd8a41ef95e49ecbbf0f9 /include/xcb | |
| parent | 6e973f9f133979796ca35d275470255271f39fce (diff) | |
| download | vcxsrv-b63d68318fdce5002f42a818f3dd3dff126ec2c2.tar.gz vcxsrv-b63d68318fdce5002f42a818f3dd3dff126ec2c2.tar.bz2 vcxsrv-b63d68318fdce5002f42a818f3dd3dff126ec2c2.zip | |
Synchronised libxcb\src\xcb.h and include\xcb\xcb.h
Diffstat (limited to 'include/xcb')
| -rw-r--r-- | include/xcb/xcb.h | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/include/xcb/xcb.h b/include/xcb/xcb.h index f781e87f9..b1bab44da 100644 --- a/include/xcb/xcb.h +++ b/include/xcb/xcb.h @@ -272,6 +272,41 @@ xcb_generic_event_t *xcb_wait_for_event(xcb_connection_t *c); xcb_generic_event_t *xcb_poll_for_event(xcb_connection_t *c);
/**
+ * @brief Returns the next event or error that precedes the given request.
+ * @param c: The connection to the X server.
+ * @param request: The limiting sequence number.
+ * @return The next event from the server.
+ *
+ * Returns the next event or error with a sequence number less than or
+ * equal to the given sequence number, or returns NULL if no such event can
+ * ever arrive. Blocks until either a suitable event or error arrive, or a
+ * response arrives that proves no such event is coming, or an I/O error
+ * occurs.
+ *
+ * After processing a request, the X server sends responses in a specific
+ * order. First come any events that the request generated, then any
+ * replies for the request, then the error response if there is one. After
+ * that, the server may spontaneously send more events with the same
+ * sequence number, which are not related to that request.
+ *
+ * This function will always return events from the pre-reply phase of the
+ * specified request. It may also return events from the unrelated
+ * post-reply stream, as long as they have the same sequence number.
+ *
+ * This function is useful for callers that need to process responses in
+ * wire-order.
+ *
+ * Implementation note: You cannot currently use this function to ensure
+ * that you process responses in exactly wire-order, because depending on
+ * the sequence of calls you make and the timing of server responses,
+ * post-reply events with the same sequence number may be returned as part
+ * of the pre-reply event stream, even though they were separated by a
+ * reply or error. In practice this kind of error is unlikely to matter,
+ * but it may be fixed in the future.
+ */
+xcb_generic_event_t *xcb_wait_for_event_until(xcb_connection_t *c, unsigned int request);
+
+/**
* @brief Return the error for a request, or NULL if none can ever arrive.
* @param c: The connection to the X server.
* @param cookie: The request cookie.
|