Version: 3.1.1
wxMenuEvent Class Reference

#include <wx/event.h>

+ Inheritance diagram for wxMenuEvent:

Detailed Description

This class is used for a variety of menu-related events.

Note that these do not include menu command events, which are handled using wxCommandEvent objects.

Events of this class are generated by both menus that are part of a wxMenuBar, attached to wxFrame, and popup menus shown by wxWindow::PopupMenu(). They are sent to the following objects until one of them handles the event:

-# The menu object itself, as returned by GetMenu(), if any.
-# The wxMenuBar to which this menu is attached, if any.
-# The window associated with the menu, e.g. the one calling
PopupMenu() for the popup menus.
-# The top level parent of that window if it's different from the
window itself.

This is similar to command events generated by the menu items, but, unlike them, wxMenuEvent are only sent to the window itself and its top level parent but not any intermediate windows in the hierarchy.

The default handler for wxEVT_MENU_HIGHLIGHT in wxFrame displays help text in the status bar, see wxFrame::SetStatusBarPane().

Events using this class

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

void handlerFuncName(wxMenuEvent& event)

Event macros:

  • EVT_MENU_OPEN(func):
    A menu is about to be opened. On Windows, this is only sent once for each navigation of the menubar (up until all menus have closed).
  • EVT_MENU_CLOSE(func):
    A menu has been just closed. Notice that this event is currently being sent before the menu selection (wxEVT_MENU) event, if any.
  • EVT_MENU_HIGHLIGHT(id, func):
    The menu item with the specified id has been highlighted: used to show help prompts in the status bar by wxFrame
  • EVT_MENU_HIGHLIGHT_ALL(func):
    A menu item has been highlighted, i.e. the currently selected menu item has changed.

Library:  wxCore
Category:  Events
See also
wxCommandEvent, Events and Event Handling

Public Member Functions

 wxMenuEvent (wxEventType type=wxEVT_NULL, int id=0, wxMenu *menu=NULL)
 Constructor. More...
 
wxMenuGetMenu () const
 Returns the menu which is being opened or closed. More...
 
int GetMenuId () const
 Returns the menu identifier associated with the event. More...
 
bool IsPopup () const
 Returns true if the menu which is being opened or closed is a popup menu, false if it is a normal one. More...
 
- Public Member Functions inherited from wxEvent
 wxEvent (int id=0, wxEventType eventType=wxEVT_NULL)
 Constructor. More...
 
virtual wxEventClone () const =0
 Returns a copy of the event. More...
 
wxObjectGetEventObject () const
 Returns the object (usually a window) associated with the event, if any. More...
 
wxEventType GetEventType () const
 Returns the identifier of the given event type, such as wxEVT_BUTTON. More...
 
virtual wxEventCategory GetEventCategory () const
 Returns a generic category for this event. More...
 
int GetId () const
 Returns the identifier associated with this event, such as a button command id. More...
 
wxObjectGetEventUserData () const
 Return the user data associated with a dynamically connected event handler. More...
 
bool GetSkipped () const
 Returns true if the event handler should be skipped, false otherwise. More...
 
long GetTimestamp () const
 Gets the timestamp for the event. More...
 
bool IsCommandEvent () const
 Returns true if the event is or is derived from wxCommandEvent else it returns false. More...
 
void ResumePropagation (int propagationLevel)
 Sets the propagation level to the given value (for example returned from an earlier call to wxEvent::StopPropagation). More...
 
void SetEventObject (wxObject *object)
 Sets the originating object. More...
 
void SetEventType (wxEventType type)
 Sets the event type. More...
 
void SetId (int id)
 Sets the identifier associated with this event, such as a button command id. More...
 
void SetTimestamp (long timeStamp=0)
 Sets the timestamp for the event. More...
 
bool ShouldPropagate () const
 Test if this event should be propagated or not, i.e. if the propagation level is currently greater than 0. More...
 
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. More...
 
int StopPropagation ()
 Stop the event from propagating to its parent window. More...
 
- Public Member Functions inherited from wxObject
 wxObject ()
 Default ctor; initializes to NULL the internal reference data. More...
 
 wxObject (const wxObject &other)
 Copy ctor. More...
 
virtual ~wxObject ()
 Destructor. More...
 
virtual wxClassInfoGetClassInfo () const
 This virtual function is redefined for every class that requires run-time type information, when using the wxDECLARE_CLASS macro (or similar). More...
 
wxObjectRefDataGetRefData () const
 Returns the wxObject::m_refData pointer, i.e. the data referenced by this object. More...
 
bool IsKindOf (const wxClassInfo *info) const
 Determines whether this class is a subclass of (or the same class as) the given class. More...
 
bool IsSameAs (const wxObject &obj) const
 Returns true if this object has the same data pointer as obj. More...
 
void Ref (const wxObject &clone)
 Makes this object refer to the data in clone. More...
 
void SetRefData (wxObjectRefData *data)
 Sets the wxObject::m_refData pointer. More...
 
void UnRef ()
 Decrements the reference count in the associated data, and if it is zero, deletes the data. More...
 
void UnShare ()
 This is the same of AllocExclusive() but this method is public. More...
 
void operator delete (void *buf)
 The delete operator is defined for debugging versions of the library only, when the identifier WXDEBUG is defined. More...
 
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. More...
 

Additional Inherited Members

- Protected Member Functions inherited from wxObject
void AllocExclusive ()
 Ensure that this object's data is not shared with any other object. More...
 
virtual wxObjectRefDataCreateRefData () const
 Creates a new instance of the wxObjectRefData-derived class specific to this object and returns it. More...
 
virtual wxObjectRefDataCloneRefData (const wxObjectRefData *data) const
 Creates a new instance of the wxObjectRefData-derived class specific to this object and initializes it copying data. More...
 
- Protected Attributes inherited from wxEvent
int m_propagationLevel
 Indicates how many levels the event can propagate. More...
 
- Protected Attributes inherited from wxObject
wxObjectRefDatam_refData
 Pointer to an object which is the object's reference-counted data. More...
 

Constructor & Destructor Documentation

wxMenuEvent::wxMenuEvent ( wxEventType  type = wxEVT_NULL,
int  id = 0,
wxMenu menu = NULL 
)

Constructor.

Member Function Documentation

wxMenu* wxMenuEvent::GetMenu ( ) const

Returns the menu which is being opened or closed.

This method can only be used with the OPEN and CLOSE events.

The returned value is never NULL in the ports implementing this function, which currently includes all the major ones.

int wxMenuEvent::GetMenuId ( ) const

Returns the menu identifier associated with the event.

This method should be only used with the HIGHLIGHT events.

bool wxMenuEvent::IsPopup ( ) const

Returns true if the menu which is being opened or closed is a popup menu, false if it is a normal one.

This method should only be used with the OPEN and CLOSE events.