wxFocusEvent Class Reference

#include <wx/event.h>

Inheritance diagram for wxFocusEvent:

Detailed Description

A focus event is sent when a window's focus changes.

The window losing focus receives a "kill focus" event while the window gaining it gets a "set focus" one.

Notice that the set focus event happens both when the user gives focus to the window (whether using the mouse or keyboard) and when it is done from the program itself using wxWindow::SetFocus.

The focus event handlers should almost invariably call wxEvent::Skip() on their event argument to allow the default handling to take place. Failure to do this may result in incorrect behaviour of the native controls. Also note that wxEVT_KILL_FOCUS handler must not call wxWindow::SetFocus() as this, again, is not supported by all native controls. If you need to do this, consider using the Delayed Action Mechanism described in wxIdleEvent documentation.

Events using this class

The following event handler macros redirect the events to member function handlers 'func' with prototypes like:

void handlerFuncName(wxFocusEvent& event)

Event macros:

• EVT_SET_FOCUS(func):
  Process a wxEVT_SET_FOCUS event.
• EVT_KILL_FOCUS(func):
  Process a wxEVT_KILL_FOCUS event.

Library:  wxCore

Category:  Events

See Also

Events and Event Handling

Public Member Functions
	wxFocusEvent (wxEventType eventType=wxEVT_NULL, int id=0)
	Constructor.
wxWindow *	GetWindow () const
	Returns the window associated with this event, that is the window which had the focus before for the wxEVT_SET_FOCUS event and the window which is going to receive focus for the wxEVT_KILL_FOCUS one.
void	SetWindow (wxWindow *win)
Public Member Functions inherited from wxEvent
	wxEvent (int id=0, wxEventType eventType=wxEVT_NULL)
	Constructor.
virtual wxEvent *	Clone () const =0
	Returns a copy of the event.
wxObject *	GetEventObject () const
	Returns the object (usually a window) associated with the event, if any.
wxEventType	GetEventType () const
	Returns the identifier of the given event type, such as wxEVT_BUTTON.
virtual wxEventCategory	GetEventCategory () const
	Returns a generic category for this event.
int	GetId () const
	Returns the identifier associated with this event, such as a button command id.
wxObject *	GetEventUserData () const
	Return the user data associated with a dynamically connected event handler.
bool	GetSkipped () const
	Returns true if the event handler should be skipped, false otherwise.
long	GetTimestamp () const
	Gets the timestamp for the event.
bool	IsCommandEvent () const
	Returns true if the event is or is derived from wxCommandEvent else it returns false.
void	ResumePropagation (int propagationLevel)
	Sets the propagation level to the given value (for example returned from an earlier call to wxEvent::StopPropagation).
void	SetEventObject (wxObject *object)
	Sets the originating object.
void	SetEventType (wxEventType type)
	Sets the event type.
void	SetId (int id)
	Sets the identifier associated with this event, such as a button command id.
void	SetTimestamp (long timeStamp=0)
	Sets the timestamp for the event.
bool	ShouldPropagate () const
	Test if this event should be propagated or not, i.e. if the propagation level is currently greater than 0.
void	Skip (bool skip=true)
	This method can be used inside an event handler to control whether further event handlers bound to this event will be called after the current one returns.
int	StopPropagation ()
	Stop the event from propagating to its parent window.
Public Member Functions inherited from wxObject
	wxObject ()
	Default ctor; initializes to NULL the internal reference data.
	wxObject (const wxObject &other)
	Copy ctor.
virtual	~wxObject ()
	Destructor.
virtual wxClassInfo *	GetClassInfo () const
	This virtual function is redefined for every class that requires run-time type information, when using the wxDECLARE_CLASS macro (or similar).
wxObjectRefData *	GetRefData () const
	Returns the wxObject::m_refData pointer, i.e. the data referenced by this object.
bool	IsKindOf (const wxClassInfo *info) const
	Determines whether this class is a subclass of (or the same class as) the given class.
bool	IsSameAs (const wxObject &obj) const
	Returns true if this object has the same data pointer as obj.
void	Ref (const wxObject &clone)
	Makes this object refer to the data in clone.
void	SetRefData (wxObjectRefData *data)
	Sets the wxObject::m_refData pointer.
void	UnRef ()
	Decrements the reference count in the associated data, and if it is zero, deletes the data.
void	UnShare ()
	This is the same of AllocExclusive() but this method is public.
void	operator delete (void *buf)
	The delete operator is defined for debugging versions of the library only, when the identifier WXDEBUG is defined.
void *	operator new (size_t size, const wxString &filename=NULL, int lineNum=0)
	The new operator is defined for debugging versions of the library only, when the identifier WXDEBUG is defined.

Additional Inherited Members
Protected Member Functions inherited from wxObject
void	AllocExclusive ()
	Ensure that this object's data is not shared with any other object.
virtual wxObjectRefData *	CreateRefData () const
	Creates a new instance of the wxObjectRefData-derived class specific to this object and returns it.
virtual wxObjectRefData *	CloneRefData (const wxObjectRefData *data) const
	Creates a new instance of the wxObjectRefData-derived class specific to this object and initializes it copying data.
Protected Attributes inherited from wxEvent
int	m_propagationLevel
	Indicates how many levels the event can propagate.

Constructor & Destructor Documentation

wxFocusEvent::wxFocusEvent	(	wxEventType	eventType = wxEVT_NULL,
		int	id = 0
	)

Constructor.

Member Function Documentation

wxWindow* wxFocusEvent::GetWindow

(

)

const

Returns the window associated with this event, that is the window which had the focus before for the wxEVT_SET_FOCUS event and the window which is going to receive focus for the wxEVT_KILL_FOCUS one.

Warning: the window pointer may be NULL!

void wxFocusEvent::SetWindow

(

wxWindow *

win

)