the function skips to step (7).
-# TryBefore() is called (this is where wxValidator are taken into
account for wxWindow objects). If this returns @true, the function exits.
- -# Dynamic event table of the handlers connected using Connect() is
+ -# Dynamic event table of the handlers binded using Bind<>() is
searched. If a handler is found, it is executed and the function
returns @true unless the handler used wxEvent::Skip() to indicate
that it didn't handle the event in which case the search continues.
- -# Static events table of the handlers connected using event table
+ -# Static events table of the handlers binded using event table
macros is searched for this event handler. If this fails, the base
class event table table is tried, and so on until no more tables
exist or an appropriate function was found. If a handler is found,
@see wxWindow::HandleWindowEvent
*/
bool SafelyProcessEvent(wxEvent& event);
-
+
/**
- Processes the pending events previously queued using QueueEvent() or
+ Processes the pending events previously queued using QueueEvent() or
AddPendingEvent(); you must call this function only if you are sure
there are pending events for this handler, otherwise a @c wxCHECK
will fail.
-
+
The real processing still happens in ProcessEvent() which is called by this
function.
-
- Note that this function needs a valid application object (see
+
+ Note that this function needs a valid application object (see
wxAppConsole::GetInstance()) because wxApp holds the list of the event
handlers with pending events and this function manipulates that list.
*/
/**
Deletes all events queued on this event handler using QueueEvent() or
AddPendingEvent().
-
+
Use with care because the events which are deleted are (obviously) not
processed and this may have unwanted consequences (e.g. user actions events
will be lost).
*/
void DeletePendingEvents();
-
+
/**
Searches the event table, executing an event handler function if an appropriate
one is found.
If a suitable function is called but calls wxEvent::Skip, this
function will fail, and searching will continue.
-
+
@todo this function in the header is listed as an "implementation only" function;
are we sure we want to document it?
Connects the given function dynamically with the event handler, id and
event type.
+ Notice that Bind() provides a more flexible and safer way to do the
+ same thing as Connect(), please use it in any new code -- while
+ Connect() is not formally deprecated due to its existing widespread
+ usage, it has no advantages compared to Bind().
+
This is an alternative to the use of static event tables. It is more
flexible as it allows to connect events generated by some object to an
event handler defined in a different object of a different class (which
Do make sure to specify the correct @a eventSink when connecting to an
event of a different object.
- See @ref overview_events_connect for more detailed explanation
+ See @ref overview_events_bind for more detailed explanation
of this function and the @ref page_samples_event sample for usage
examples.
Object whose member function should be called. It must be specified
when connecting an event generated by one object to a member
function of a different object. If it is omitted, @c this is used.
+
+ @see Bind<>()
*/
void Connect(int id, int lastId, wxEventType eventType,
wxObjectEventFunction function,
//@}
+ /**
+ @name Binding and Unbinding
+ */
+ //@{
+
+ /**
+ Binds the given function, functor or method dynamically with the event.
+
+ This offers basically the same functionality as Connect(), but it is
+ more flexible as it also allows you to use ordinary functions and
+ arbitrary functors as event handlers. It is also less restrictive then
+ Connect() because you can use an arbitrary method as an event handler,
+ where as Connect() requires a wxEvtHandler derived handler.
+
+ See @ref overview_events_bind for more detailed explanation
+ of this function and the @ref page_samples_event sample for usage
+ examples.
+
+ @param eventType
+ The event type to be associated with this event handler.
+ @param functor
+ The event handler functor. This can be an ordinary function but also
+ an arbitrary functor like boost::function<>.
+ @param id
+ The first ID of the identifier range to be associated with the event
+ handler.
+ @param lastId
+ The last ID of the identifier range to be associated with the event
+ handler.
+ @param userData
+ Data to be associated with the event table entry.
+
+ @since 2.9.0
+ */
+ template <typename EventTag, typename Functor>
+ void Bind(const EventTag& eventType,
+ Functor functor,
+ int id = wxID_ANY,
+ int lastId = wxID_ANY,
+ wxObject *userData = NULL);
+
+ /**
+ See the Bind<>(const EventTag&, Functor, int, int, wxObject*) overload for
+ more info.
+
+ This overload will bind the given method as the event handler.
+
+ @param eventType
+ The event type to be associated with this event handler.
+ @param method
+ The event handler method. This can be an arbitrary method (doesn't need
+ to be from a wxEvtHandler derived class).
+ @param handler
+ Object whose method should be called. It must always be specified
+ so it can be checked at compile time whether the given method is an
+ actual member of the given handler.
+ @param id
+ The first ID of the identifier range to be associated with the event
+ handler.
+ @param lastId
+ The last ID of the identifier range to be associated with the event
+ handler.
+ @param userData
+ Data to be associated with the event table entry.
+
+ @since 2.9.0
+ */
+ template <typename EventTag, typename Class, typename EventArg, typename EventHandler>
+ void Bind(const EventTag &eventType,
+ void (Class::*method)(EventArg &),
+ EventHandler *handler,
+ int id = wxID_ANY,
+ int lastId = wxID_ANY,
+ wxObject *userData = NULL);
+ /**
+ Unbinds the given function, functor or method 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 unbind functions, functors or methods which have
+ been added using the Bind<>() method. There is no way to unbind
+ functions binded using the (static) event tables.
+
+ @param eventType
+ The event type associated with this event handler.
+ @param functor
+ The event handler functor. This can be an ordinary function but also
+ an arbitrary functor like boost::function<>.
+ @param id
+ The first ID of the identifier range associated with the event
+ handler.
+ @param lastId
+ The last ID of the identifier range associated with the event
+ handler.
+ @param userData
+ Data associated with the event table entry.
+
+ @since 2.9.0
+ */
+ template <typename EventTag, typename Functor>
+ bool Unbind(const EventTag& eventType,
+ Functor functor,
+ int id = wxID_ANY,
+ int lastId = wxID_ANY,
+ wxObject *userData = NULL);
+
+ /**
+ See the Unbind<>(const EventTag&, Functor, int, int, wxObject*)
+ overload for more info.
+
+ This overload unbinds the given method from the event..
+
+ @param eventType
+ The event type associated with this event handler.
+ @param method
+ The event handler method associated with this event.
+ @param handler
+ Object whose method was called.
+ @param id
+ The first ID of the identifier range associated with the event
+ handler.
+ @param lastId
+ The last ID of the identifier range associated with the event
+ handler.
+ @param userData
+ Data associated with the event table entry.
+
+ @since 2.9.0
+ */
+ template <typename EventTag, typename Class, typename EventArg, typename EventHandler>
+ bool Unbind(const EventTag &eventType,
+ void (Class::*method)(EventArg&),
+ EventHandler *handler,
+ int id = wxID_ANY,
+ int lastId = wxID_ANY,
+ wxObject *userData = NULL );
+ //@}
/**
@name User-supplied data
*/
The class @a cls must be the wxEvent-derived class associated with the
events of this type and its full declaration must be visible from the point
of use of this macro.
+
+ For example:
+ @code
+ wxDECLARE_EVENT(MY_COMMAND_EVENT, wxCommandEvent);
+
+ class MyCustomEvent : public wxEvent { ... };
+ wxDECLARE_EVENT(MY_CUSTOM_EVENT, MyCustomEvent);
+ @endcode
*/
#define wxDECLARE_EVENT(name, cls) \
wxDECLARE_EXPORTED_EVENT(wxEMPTY_PARAMETER_VALUE, name, cls)
projects / wxWidgets.git / blobdiff