wxWindow (and therefore all window classes) are derived from
this class.
+When events are received, wxEvtHandler invokes the method listed in the
+event table using itself as the object. When using multiple inheritance
+it is imperative that the wxEvtHandler(-derived) class be the first
+class inherited such that the "this" pointer for the overall object
+will be identical to the "this" pointer for the wxEvtHandler portion.
+
\wxheading{Derived from}
\helpref{wxObject}{wxobject}
\membersection{wxEvtHandler::AddPendingEvent}\label{wxevthandleraddpendingevent}
-\func{virtual void}{AddPendingEvent}{\param{wxEvent\& }{event}}
+\func{void}{AddPendingEvent}{\param{wxEvent\& }{event}}
This function posts an event to be processed later.
\func{void}{Connect}{\param{int}{ id},
\param{wxEventType }{eventType}, \param{wxObjectEventFunction}{ function},
- \param{wxObject*}{ userData = NULL}}
+ \param{wxObject*}{ userData = NULL}, \param{wxEvtHandler*}{ eventSink = NULL}}
\func{void}{Connect}{\param{int}{ id}, \param{int}{ lastId},
\param{wxEventType }{eventType}, \param{wxObjectEventFunction}{ function},
- \param{wxObject*}{ userData = NULL}}
+ \param{wxObject*}{ userData = NULL}, \param{wxEvtHandler*}{ eventSink = 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.
\docparam{userData}{Data to be associated with the event table entry.}
+\docparam{eventSink}{Object whose member function should be called. If this is NULL,
+'this' will be used.}
+
\wxheading{Example}
\begin{verbatim}
(wxObjectEventFunction) (wxEventFunction) (wxCommandEventFunction) MyFrame::OnQuit );
\end{verbatim}
+\perlnote{In wxPerl this function takes 4 arguments: \texttt{id,
+lastid, type, method}; if \texttt{method} is \texttt{undef}, the
+handler is disconnected.}
+
\membersection{wxEvtHandler::Disconnect}\label{wxevthandlerdisconnect}
\func{bool}{Disconnect}{\param{int}{ id},
\param{wxEventType }{eventType = wxEVT\_NULL}, \param{wxObjectEventFunction}{ function = NULL},
- \param{wxObject*}{ userData = NULL}}
+ \param{wxObject*}{ userData = NULL}, \param{wxEvtHandler*}{ eventSink = NULL}}
\func{bool}{Disconnect}{\param{int}{ id}, \param{int}{ lastId = -1},
\param{wxEventType }{eventType = wxEVT\_NULL}, \param{wxObjectEventFunction}{ function = NULL},
- \param{wxObject*}{ userData = NULL}}
+ \param{wxObject*}{ userData = NULL}, \param{wxEvtHandler*}{ eventSink = 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
\docparam{userData}{Data associated with the event table entry.}
+\docparam{eventSink}{Object whose member function should be called.}
+
+\perlnote{In wxPerl this function takes 3 arguments: \texttt{id,
+lastid, type}.}
+
\membersection{wxEvtHandler::GetClientData}\label{wxevthandlergetclientdata}
\func{void* }{GetClientData}{\void}
\wxheading{Remarks}
-Normally, your application would not call this function: it is called in the wxWindows
+Normally, your application would not call this function: it is called in the wxWidgets
implementation to dispatch incoming user interface events to the framework (and application).
However, you might need to call it if implementing new functionality (such as a new control) where
you define new event types, as opposed to allowing the user to override virtual functions.
An instance where you might actually override the {\bf ProcessEvent} function is where you want
-to direct event processing to event handlers not normally noticed by wxWindows. For example,
+to direct event processing to event handlers not normally noticed by wxWidgets. For example,
in the document/view architecture, documents and views are potential event handlers.
When an event reaches a frame, {\bf ProcessEvent} will need to be called on the associated
document and view in case event handler functions are associated with these objects.