wxNotificationMessage Class Reference

#include <wx/notifmsg.h>

Inheritance diagram for wxNotificationMessage:

Detailed Description

This class allows to show the user a message non intrusively.

Currently it is implemented natively for Windows, OS X, GTK and uses generic toast notifications under the other platforms. It's not recommended but wxGenericNotificationMessage can be used instead of the native ones. This might make sense if your application requires features not available in the native implementation.

Notice that this class is not a window and so doesn't derive from wxWindow.

Platform Notes

Windows

Up to Windows 8 balloon notifications are displayed from an icon in the notification area of the taskbar. If your application uses a wxTaskBarIcon you should call UseTaskBarIcon() to ensure that only one icon is shown in the notification area. Windows 10 displays all notifications as popup toasts. To suppress the additional icon in the notification area on Windows 10 and for toast notification support on Windows 8 it is recommended to call MSWUseToasts() before showing the first notification message.

OS X

The OS X implementation uses Notification Center to display native notifications. In order to use actions your notifications must use the alert style. This can be enabled by the user in system settings or by setting the NSUserNotificationAlertStyle value in Info.plist to alert. Please note that the user always has the option to change the notification style.

Events emitted by this class

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

void handlerFuncName(wxCommandEvent& event)

Event macros for events emitted by this class:

• wxEVT_NOTIFICATION_MESSAGE_CLICK(id, func):
  Process a wxEVT_NOTIFICATION_MESSAGE_CLICK event, when a notification is clicked.
• wxEVT_NOTIFICATION_MESSAGE_DISMISSED(id, func):
  Process a wxEVT_NOTIFICATION_MESSAGE_DISMISSED event, when a notification is dismissed by the user or times out.
• wxEVT_NOTIFICATION_MESSAGE_ACTION(id, func):
  Process a wxEVT_NOTIFICATION_MESSAGE_ACTION event, when the user selects on of the actions added by AddAction()

Since

2.9.0

Library:  wxAdvanced

Category:  Miscellaneous

Public Types
enum	{   Timeout_Auto = -1,   Timeout_Never = 0 }
	Possible values for Show() timeout. More...

Public Member Functions
	wxNotificationMessage ()
	Default constructor, use SetParent(), SetTitle() and SetMessage() to initialize the object before showing it. More...
	wxNotificationMessage (const wxString &title, const wxString &message=wxEmptyString, wxWindow *parent=NULL, int flags=wxICON_INFORMATION)
	Create a notification object with the given attributes. More...
virtual	~wxNotificationMessage ()
	Destructor does not hide the notification. More...
bool	AddAction (wxWindowID actionid, const wxString &label=wxString())
	Add an action to the notification. More...
virtual bool	Close ()
	Hides the notification. More...
void	SetFlags (int flags)
	This parameter can be currently used to specify the icon to show in the notification. More...
void	SetIcon (const wxIcon &icon)
	Specify a custom icon to be displayed in the notification. More...
void	SetMessage (const wxString &message)
	Set the main text of the notification. More...
void	SetParent (wxWindow *parent)
	Set the parent for this notification: the notification will be associated with the top level parent of this window or, if this method is not called, with the main application window by default. More...
void	SetTitle (const wxString &title)
	Set the title, it must be a concise string (not more than 64 characters), use SetMessage() to give the user more details. More...
virtual bool	Show (int timeout=Timeout_Auto)
	Show the notification to the user and hides it after timeout seconds are elapsed. More...
Public Member Functions inherited from wxEvtHandler
	wxEvtHandler ()
	Constructor. More...
virtual	~wxEvtHandler ()
	Destructor. More...
virtual void	QueueEvent (wxEvent *event)
	Queue event for a later processing. More...
virtual void	AddPendingEvent (const wxEvent &event)
	Post an event to be processed later. More...
template<typename T , typename T1 , ... >
void	CallAfter (void(T::*method)(T1,...), T1 x1,...)
	Asynchronously call the given method. More...
template<typename T >
void	CallAfter (const T &functor)
	Asynchronously call the given functor. More...
virtual bool	ProcessEvent (wxEvent &event)
	Processes an event, searching event tables and calling zero or more suitable event handler function(s). More...
bool	ProcessEventLocally (wxEvent &event)
	Try to process the event in this handler and all those chained to it. More...
bool	SafelyProcessEvent (wxEvent &event)
	Processes an event by calling ProcessEvent() and handles any exceptions that occur in the process. More...
void	ProcessPendingEvents ()
	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 wxCHECK will fail. More...
void	DeletePendingEvents ()
	Deletes all events queued on this event handler using QueueEvent() or AddPendingEvent(). More...
virtual bool	SearchEventTable (wxEventTable &table, wxEvent &event)
	Searches the event table, executing an event handler function if an appropriate one is found. More...
void	Connect (int id, int lastId, wxEventType eventType, wxObjectEventFunction function, wxObject *userData=NULL, wxEvtHandler *eventSink=NULL)
	Connects the given function dynamically with the event handler, id and event type. More...
void	Connect (int id, wxEventType eventType, wxObjectEventFunction function, wxObject *userData=NULL, wxEvtHandler *eventSink=NULL)
	See the Connect(int, int, wxEventType, wxObjectEventFunction, wxObject*, wxEvtHandler*) overload for more info. More...
void	Connect (wxEventType eventType, wxObjectEventFunction function, wxObject *userData=NULL, wxEvtHandler *eventSink=NULL)
	See the Connect(int, int, wxEventType, wxObjectEventFunction, wxObject*, wxEvtHandler*) overload for more info. More...
bool	Disconnect (wxEventType eventType, wxObjectEventFunction function, wxObject *userData=NULL, 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 found and removed. More...
bool	Disconnect (int id=wxID_ANY, wxEventType eventType=wxEVT_NULL, wxObjectEventFunction function=NULL, wxObject *userData=NULL, wxEvtHandler *eventSink=NULL)
	See the Disconnect(wxEventType, wxObjectEventFunction, wxObject*, wxEvtHandler*) overload for more info. More...
bool	Disconnect (int id, int lastId, wxEventType eventType, wxObjectEventFunction function=NULL, wxObject *userData=NULL, wxEvtHandler *eventSink=NULL)
	See the Disconnect(wxEventType, wxObjectEventFunction, wxObject*, wxEvtHandler*) overload for more info. More...
template<typename EventTag , typename Functor >
void	Bind (const EventTag &eventType, Functor functor, int id=wxID_ANY, int lastId=wxID_ANY, wxObject *userData=NULL)
	Binds the given function, functor or method dynamically with the event. More...
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)
	See the Bind<>(const EventTag&, Functor, int, int, wxObject*) overload for more info. More...
template<typename EventTag , typename Functor >
bool	Unbind (const EventTag &eventType, Functor functor, 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. More...
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)
	See the Unbind<>(const EventTag&, Functor, int, int, wxObject*) overload for more info. More...
void *	GetClientData () const
	Returns user-supplied client data. More...
wxClientData *	GetClientObject () const
	Returns a pointer to the user-supplied client data object. More...
void	SetClientData (void *data)
	Sets user-supplied client data. More...
void	SetClientObject (wxClientData *data)
	Set the client data object. More...
bool	GetEvtHandlerEnabled () const
	Returns true if the event handler is enabled, false otherwise. More...
wxEvtHandler *	GetNextHandler () const
	Returns the pointer to the next handler in the chain. More...
wxEvtHandler *	GetPreviousHandler () const
	Returns the pointer to the previous handler in the chain. More...
void	SetEvtHandlerEnabled (bool enabled)
	Enables or disables the event handler. More...
virtual void	SetNextHandler (wxEvtHandler *handler)
	Sets the pointer to the next handler. More...
virtual void	SetPreviousHandler (wxEvtHandler *handler)
	Sets the pointer to the previous handler. More...
void	Unlink ()
	Unlinks this event handler from the chain it's part of (if any); then links the "previous" event handler to the "next" one (so that the chain won't be interrupted). More...
bool	IsUnlinked () const
	Returns true if the next and the previous handler pointers of this event handler instance are NULL. 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 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). More...
wxObjectRefData *	GetRefData () 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...

Static Public Member Functions
static wxTaskBarIcon *	UseTaskBarIcon (wxTaskBarIcon *icon)
	If the application already uses a wxTaskBarIcon, it should be connected to notifications by using this method. More...
static bool	MSWUseToasts (const wxString &shortcutPath=wxString(), const wxString &appId=wxString())
	Enables toast notifications available since Windows 8 and suppresses the additional icon in the notification area on Windows 10. More...
Static Public Member Functions inherited from wxEvtHandler
static void	AddFilter (wxEventFilter *filter)
	Add an event filter whose FilterEvent() method will be called for each and every event processed by wxWidgets. More...
static void	RemoveFilter (wxEventFilter *filter)
	Remove a filter previously installed with AddFilter(). More...

Additional Inherited Members
Protected Member Functions inherited from wxEvtHandler
virtual bool	TryBefore (wxEvent &event)
	Method called by ProcessEvent() before examining this object event tables. More...
virtual bool	TryAfter (wxEvent &event)
	Method called by ProcessEvent() as last resort. More...
Protected Member Functions inherited from wxObject
void	AllocExclusive ()
	Ensure that this object's data is not shared with any other object. More...
virtual wxObjectRefData *	CreateRefData () const
	Creates a new instance of the wxObjectRefData-derived class specific to this object and returns it. More...
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. More...
Protected Attributes inherited from wxObject
wxObjectRefData *	m_refData
	Pointer to an object which is the object's reference-counted data. More...

Member Enumeration Documentation

anonymous enum

Possible values for Show() timeout.

Enumerator
Timeout_Auto	Notification will be hidden automatically.
Timeout_Never	Notification will never time out.

Constructor & Destructor Documentation

wxNotificationMessage::wxNotificationMessage

(

)

Default constructor, use SetParent(), SetTitle() and SetMessage() to initialize the object before showing it.

wxNotificationMessage::wxNotificationMessage	(	const wxString &	title,
		const wxString &	message = wxEmptyString,
		wxWindow *	parent = NULL,
		int	flags = wxICON_INFORMATION
	)

Create a notification object with the given attributes.

See SetTitle(), SetMessage(), SetParent() and SetFlags() for the description of the corresponding parameters.

virtual wxNotificationMessage::~wxNotificationMessage ( )

virtual

Destructor does not hide the notification.

The notification can continue to be shown even after the C++ object was destroyed, call Close() explicitly if it needs to be hidden.

Member Function Documentation

bool wxNotificationMessage::AddAction	(	wxWindowID	actionid,
		const wxString &	label = wxString()
	)

Add an action to the notification.

If supported by the implementation this are usually buttons in the notification selectable by the user.

Returns

false if the current implementation or OS version does not support actions in notifications.

Since

3.1.0

virtual bool wxNotificationMessage::Close ( )

virtual

Hides the notification.

Returns true if it was hidden or false if it couldn't be done (e.g. on some systems automatically hidden notifications can't be hidden manually).

static bool wxNotificationMessage::MSWUseToasts ( const wxString &  shortcutPath = wxString(), const wxString &  appId = wxString()  )

static

Enables toast notifications available since Windows 8 and suppresses the additional icon in the notification area on Windows 10.

Toast notifications require a shortcut to the application in the start menu. The start menu shortcut needs to contain an Application User Model ID. It is recommended that the applications setup creates the shortcut and the application specifies the setup created shortcut in shortcutPath. A call to this method will verify (and if necessary modify) the shortcut before enabling toast notifications.

Parameters

shortcutPath	Path to a shortcut file referencing the applications executable. If the string is empty the applications display name will be used. If not fully qualified, it will be used as a path relative to the users start menu directory. The file extension .lnk is optional.
appId	The applications Application User Model ID. If empty it will be extracted from the shortcut. If the shortcut does not contain an id an id will be automatically created from the applications vendor and app name.

Returns

false if toast notifications could not be enabled.

Availability:  only available for the wxMSW port.

See also

wxAppConsole::SetAppName(), wxAppConsole::SetVendorName()

Since

3.1.0

void wxNotificationMessage::SetFlags

(

int

flags

)

This parameter can be currently used to specify the icon to show in the notification.

Valid values are wxICON_INFORMATION, wxICON_WARNING and wxICON_ERROR (notice that wxICON_QUESTION is not allowed here). Some implementations of this class may not support the icons.

See also

SetIcon()

void wxNotificationMessage::SetIcon

(

const wxIcon &

icon

)

Specify a custom icon to be displayed in the notification.

Some implementations of this class may not support custom icons.

See also

SetFlags()

Since

3.1.0

void wxNotificationMessage::SetMessage

(

const wxString &

message

)

Set the main text of the notification.

This should be a more detailed description than the title but still limited to reasonable length (not more than 256 characters).

void wxNotificationMessage::SetParent

(

wxWindow *

parent

)

Set the parent for this notification: the notification will be associated with the top level parent of this window or, if this method is not called, with the main application window by default.

void wxNotificationMessage::SetTitle

(

const wxString &

title

)

Set the title, it must be a concise string (not more than 64 characters), use SetMessage() to give the user more details.

virtual bool wxNotificationMessage::Show ( int  timeout = Timeout_Auto )

virtual

Show the notification to the user and hides it after timeout seconds are elapsed.

Special values Timeout_Auto and Timeout_Never can be used here, notice that you shouldn't rely on timeout being exactly respected because the current platform may only support default timeout value and also because the user may be able to close the notification.

Note

When using native notifications in wxGTK, the timeout is ignored for the notifications with wxICON_WARNING or wxICON_ERROR flags, they always remain shown unless they're explicitly hidden by the user, i.e. behave as if Timeout_Auto were given.

Returns

false if an error occurred.

static wxTaskBarIcon* wxNotificationMessage::UseTaskBarIcon ( wxTaskBarIcon *  icon )

static

If the application already uses a wxTaskBarIcon, it should be connected to notifications by using this method.

This has no effect if toast notifications are used.

Returns

the task bar icon which was used previously (may be NULL)

Availability:  only available for the wxMSW port.