\func{virtual void}{AddPendingEvent}{\param{wxEvent\& }{event}}
-Adds an event to be processed later. The function will return immediately and the
-event will get processed in idle time using the \helpref{wxEvtHandler::ProcessEvent}{wxevthandlerprocessevent}
-method.
+This function posts an event to be processed later.
\wxheading{Parameters}
\wxheading{Remarks}
-Note that this requires that the event has a fully implemented Clone()
-methods so that the event can be duplicated and stored until later processing.
-Not all events in wxWindows currently have a fully implemented Clone() method,
-you may have to look at the source to verify this.
+The difference between sending an event (using the
+\helpref{ProcessEvent}{wxevthandlerprocessevent} method) and posting it is
+that in the first case the event is processed before the function returns,
+while in the second case, the function returns immediately and the event will
+be processed sometime later (usually during the next event loop iteration).
-This methods automatically wakes up idle handling even if the underlying window
-system is currently idle anyway and thus would not send any idle events. (Waking
-up the idle handling is done calling \helpref{::wxWakeUpIdle}{wxwakeupidle}.)
+A copy of {\it event} is made by the function, so the original can be deleted
+as soon as function returns (it is common that the original is created on the
+stack). This requires that the \helpref{wxEvent::Clone}{wxeventclone} method
+be implemented by {\it event} so that it can be duplicated and stored until
+it gets processed.
-This is also the method to call for inter-thread communication. When using
-a multi-threading program, you will often have to inform the main GUI thread
-about the status of other working threads and this has to be done using this
-method - which also means that this method is thread safe by means of using
-crtical sections where needed.
+This is also the method to call for inter-thread communication---it will
+post events safely between different threads which means that this method is
+thread-safe by using critical sections where needed. In a multi-threaded
+program, you often need to inform the main GUI thread about the status of
+other working threads and such notification should be done using this method.
-Furthermore, it may be noted that some ports of wxWindows will probably move
-to using this method more and more in preference over calling ProcessEvent()
-directly so as to avoid problems with reentrant code.
+This method automatically wakes up idle handling if the underlying window
+system is currently idle and thus would not send any idle events. (Waking
+up idle handling is done calling \helpref{::wxWakeUpIdle}{wxwakeupidle}.)
\membersection{wxEvtHandler::Connect}\label{wxevthandlerconnect}
\membersection{wxEvtHandler::Disconnect}\label{wxevthandlerdisconnect}
\func{bool}{Disconnect}{\param{int}{ id},
- \param{wxEventType }{eventType = wxEVT_NULL}, \param{wxObjectEventFunction}{ function = NULL},
+ \param{wxEventType }{eventType = wxEVT\_NULL}, \param{wxObjectEventFunction}{ function = NULL},
\param{wxObject*}{ userData = NULL}}
\func{bool}{Disconnect}{\param{int}{ id}, \param{int}{ lastId = -1},
- \param{wxEventType }{eventType = wxEVT_NULL}, \param{wxObjectEventFunction}{ function = NULL},
+ \param{wxEventType }{eventType = wxEVT\_NULL}, \param{wxObjectEventFunction}{ function = NULL},
\param{wxObject*}{ userData = NULL}}
Disconnects the given function dynamically from the event handler, using the specified
-parameters as search criteria and returning TRUE if a matching event handler has been
-found and removed. This method can only disconnect from functions which have been added
+parameters as search criteria and returning TRUE if a matching function has been
+found and removed. This method can only disconnect functions which have been added
using the \helpref{wxEvtHandler::Connect}{wxevthandlerconnect} method. There is no way
-to disconnect from events used in the (static) event tables.
+to disconnect functions connected using the (static) event tables.
\wxheading{Parameters}
\docparam{function}{The event handler function.}
-\docparam{userData}{Data to be associated with the event table entry.}
+\docparam{userData}{Data associated with the event table entry.}
\membersection{wxEvtHandler::GetClientData}\label{wxevthandlergetclientdata}
-\func{char* }{GetClientData}{\void}
+\func{void* }{GetClientData}{\void}
Gets user-supplied client data.
\wxheading{Remarks}
Normally, any extra data the programmer wishes to associate with the object
-should be made available by deriving a new class
-with new data members.
+should be made available by deriving a new class with new data members.
\wxheading{See also}
\membersection{wxEvtHandler::SetClientData}\label{wxevthandlersetclientdata}
-\func{void}{SetClientData}{\param{char* }{data}}
+\func{void}{SetClientData}{\param{void* }{data}}
Sets user-supplied client data.
\wxheading{Remarks}
-Normally, any extra data the programmer wishes
-to associate with the object should be made available by deriving a new class
+Normally, any extra data the programmer wishes to associate with
+the object should be made available by deriving a new class
with new data members.
-%TODO: make this void*, char* only in compatibility mode.
\wxheading{See also}
projects / wxWidgets.git / blobdiff