\helpref{wxObject}{wxobject}
+\wxheading{Include files}
+
+<wx/event.h>
+
\wxheading{See also}
\overview{Event handling overview}{eventhandlingoverview}
unlink itself and restore the previous and next handlers so that they point to
each other.
-\membersection{wxEvtHandler::Default}\label{wxevthandlerdefault}
+\membersection{wxEvtHandler::AddPendingEvent}\label{wxevthandleraddpendingevent}
-\func{virtual long}{Default}{\void}
+\func{virtual void}{AddPendingEvent}{\param{wxEvent\& }{event}}
-Invokes default processing if this event handler is a window.
+This function posts an event to be processed later.
-\wxheading{Return value}
+\wxheading{Parameters}
-System dependent.
+\docparam{event}{Event to add to process queue.}
\wxheading{Remarks}
-A generic way of delegating processing to the default system behaviour. It calls a platform-dependent
-default function, with parameters dependent on the event or message parameters
-originally sent from the windowing system.
+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).
+
+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---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.
+
+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}
+
+\func{void}{Connect}{\param{int}{ id},
+ \param{wxEventType }{eventType}, \param{wxObjectEventFunction}{ function},
+ \param{wxObject*}{ userData = NULL}}
+
+\func{void}{Connect}{\param{int}{ id}, \param{int}{ lastId},
+ \param{wxEventType }{eventType}, \param{wxObjectEventFunction}{ function},
+ \param{wxObject*}{ userData = NULL}}
+
+Connects the given function dynamically with the event handler, id and event type. This
+is an alternative to the use of static event tables. See the 'dynamic' sample for usage.
+
+\wxheading{Parameters}
+
+\docparam{id}{The identifier (or first of the identifier range) to be associated with the event handler function.}
+
+\docparam{lastId}{The second part of the identifier range to be associated with the event handler function.}
+
+\docparam{eventType}{The event type to be associated with this event handler.}
+
+\docparam{function}{The event handler function.}
+
+\docparam{userData}{Data to be associated with the event table entry.}
+
+\wxheading{Example}
-Normally the application should call a base member, such as \helpref{wxWindow::OnChar}{wxwindowonchar}, which itself
-may call {\bf Default}.
+\begin{verbatim}
+ frame->Connect( wxID_EXIT,
+ wxEVT_COMMAND_MENU_SELECTED,
+ (wxObjectEventFunction) (wxEventFunction) (wxCommandEventFunction) MyFrame::OnQuit );
+\end{verbatim}
+
+\membersection{wxEvtHandler::Disconnect}\label{wxevthandlerdisconnect}
+
+\func{bool}{Disconnect}{\param{int}{ id},
+ \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{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 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 functions connected using the (static) event tables.
+
+\wxheading{Parameters}
+
+\docparam{id}{The identifier (or first of the identifier range) associated with the event handler function.}
+
+\docparam{lastId}{The second part of the identifier range associated with the event handler function.}
+
+\docparam{eventType}{The event type associated with this event handler.}
+
+\docparam{function}{The event handler function.}
+
+\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}
\wxheading{See also}
+\helpref{wxEvtHandler::SetNextHandler}{wxevthandlersetnexthandler},\rtfsp
\helpref{wxEvtHandler::GetPreviousHandler}{wxevthandlergetprevioushandler},\rtfsp
\helpref{wxEvtHandler::SetPreviousHandler}{wxevthandlersetprevioushandler},\rtfsp
-\helpref{wxEvtHandler::SetNextHandler}{wxevthandlersetnexthandler},\rtfsp
\helpref{wxWindow::PushEventHandler}{wxwindowpusheventhandler},\rtfsp
\helpref{wxWindow::PopEventHandler}{wxwindowpopeventhandler}
\wxheading{See also}
-\helpref{wxEvtHandler::GetPreviousHandler}{wxevthandlergetprevioushandler},\rtfsp
-\helpref{wxEvtHandler::SetPreviousHandler}{wxevthandlersetprevioushandler},\rtfsp
\helpref{wxEvtHandler::SetPreviousHandler}{wxevthandlersetprevioushandler},\rtfsp
+\helpref{wxEvtHandler::GetNextHandler}{wxevthandlergetnexthandler},\rtfsp
+\helpref{wxEvtHandler::SetNextHandler}{wxevthandlersetnexthandler},\rtfsp
\helpref{wxWindow::PushEventHandler}{wxwindowpusheventhandler},\rtfsp
\helpref{wxWindow::PopEventHandler}{wxwindowpopeventhandler}
\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}
\helpref{wxEvtHandler::GetClientData}{wxevthandlergetclientdata}
projects / wxWidgets.git / blobdiff