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wx.Event — wxPython Phoenix 4.2.4a1 documentation

An event is a structure holding information about an event passed to a callback or member function.

wx.Event used to be a multipurpose event object, and is an abstract base class for other event classes (see below).

For more information about events, see the Events and Event Handling overview.

Inheritance diagram for class

:

wx.ActivateEvent, wx.aui.AuiManagerEvent, wx.adv.CalculateLayoutEvent, wx.CloseEvent, wx.CommandEvent, wx.DPIChangedEvent, DialUpEvent , wx.DisplayChangedEvent, wx.DropFilesEvent, wx.EraseEvent, wx.FileSystemWatcherEvent, wx.FocusEvent, wx.FullScreenEvent, wx.GestureEvent, wx.IconizeEvent, wx.IdleEvent, wx.InitDialogEvent, wx.JoystickEvent, wx.KeyEvent, wx.MaximizeEvent, wx.MenuEvent, wx.MouseCaptureChangedEvent, wx.MouseCaptureLostEvent, wx.MouseEvent, wx.MoveEvent, wx.NavigationKeyEvent, wx.PaintEvent, wx.PaletteChangedEvent, wx.PowerEvent, wx.ProcessEvent, wx.adv.QueryLayoutInfoEvent, wx.QueryNewPaletteEvent, wx.ScrollWinEvent, wx.SetCursorEvent, wx.ShowEvent, wx.SizeEvent, SocketEvent , wx.SysColourChangedEvent, wx.adv.TaskBarIconEvent, wx.ThreadEvent, wx.TimerEvent, WebRequestEvent

__init__

Constructor.

Clone

Returns a copy of the event.

GetEventCategory

Returns a generic category for this event.

GetEventObject

Returns the object (usually a window) associated with the event, if any.

GetEventType

Returns the identifier of the given event type, such as wxEVT_BUTTON .

GetId

Returns the identifier associated with this event, such as a button command id.

GetSkipped

Returns True if the event handler should be skipped, False otherwise.

GetTimestamp

Gets the timestamp for the event.

IsCommandEvent

Returns True if the event is or is derived from wx.CommandEvent else it returns False.

ResumePropagation

Sets the propagation level to the given value (for example returned from an earlier call to wx.Event.StopPropagation ).

SetEventObject

Sets the originating object.

SetEventType

Sets the event type.

SetId

Sets the identifier associated with this event, such as a button command id.

SetTimestamp

Sets the timestamp for the event.

ShouldPropagate

Test if this event should be propagated or not, i.e. if the propagation level is currently greater than 0.

Skip

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.

StopPropagation

Stop the event from propagating to its parent window.

class wx.Event(Object)¶

Possible constructors:

Event(id=0, eventType=wxEVT_NULL) -> None

An event is a structure holding information about an event passed to a callback or member function.

Methods¶

__init__(self, id=0, eventType=wxEVT_NULL)¶

Constructor.

Notice that events are usually created by wxWidgets itself and creating e.g. a wx.PaintEvent in your code and sending it to e.g. a wx.TextCtrl will not usually affect it at all as native controls have no specific knowledge about wxWidgets events. However you may construct objects of specific types and pass them to wx.EvtHandler.ProcessEvent if you want to create your own custom control and want to process its events in the same manner as the standard ones.

Also please notice that the order of parameters in this constructor is different from almost all the derived classes which specify the event type as the first argument.

Parameters:

• id (int) – The identifier of the object (window, timer, …) which generated this event.

• eventType (wx.EventType) – The unique type of event, e.g. wxEVT_PAINT , wxEVT_SIZE or wxEVT_BUTTON .

Return type:

None

Clone(self)¶

Returns a copy of the event.

Any event that is posted to the wxWidgets event system for later action (via wx.EvtHandler.AddPendingEvent , wx.EvtHandler.QueueEvent or wx.PostEvent ) must implement this method.

All wxWidgets events fully implement this method, but any derived events implemented by the user should also implement this method just in case they (or some event derived from them) are ever posted.

All wxWidgets events implement a copy constructor, so the easiest way of implementing the Clone function is to implement a copy constructor for a new event (call it MyEvent) and then define the Clone function like this:

def Clone(self):

    return MyEvent()

Return type:

wx.Event

GetEventCategory(self)¶

Returns a generic category for this event.

wx.Event implementation returns wxEVT_CATEGORY_UI by default.

This function is used to selectively process events in wx.EventLoopBase.YieldFor .

Return type:

wx.EventCategory

GetEventObject(self)¶

Returns the object (usually a window) associated with the event, if any.

Return type:

wx.Object

GetEventType(self)¶

Returns the identifier of the given event type, such as wxEVT_BUTTON .

Return type:

wx.EventType

GetId(self)¶

Returns the identifier associated with this event, such as a button command id.

Return type:

int

GetSkipped(self)¶

Returns True if the event handler should be skipped, False otherwise.

Return type:

bool

GetTimestamp(self)¶

Gets the timestamp for the event.

The timestamp is the time in milliseconds since some fixed moment (not necessarily the standard Unix Epoch, so only differences between the timestamps and not their absolute values usually make sense).

Return type:

int

IsCommandEvent(self)¶

Returns True if the event is or is derived from wx.CommandEvent else it returns False.

Return type:

bool

Note

exists only for optimization purposes.

ResumePropagation(self, propagationLevel)¶

Sets the propagation level to the given value (for example returned from an earlier call to wx.Event.StopPropagation ).

Parameters:

propagationLevel (int)

Return type:

None

SetEventObject(self, object)¶

Sets the originating object.

Parameters:

object (wx.Object)

Return type:

None

SetEventType(self, type)¶

Sets the event type.

Parameters:

type (wx.EventType)

Return type:

None

SetId(self, id)¶

Sets the identifier associated with this event, such as a button command id.

Parameters:

id (int)

Return type:

None

SetTimestamp(self, timeStamp=0)¶

Sets the timestamp for the event.

Parameters:

timeStamp (long)

Return type:

None

ShouldPropagate(self)¶

Test if this event should be propagated or not, i.e. if the propagation level is currently greater than 0.

Return type:

bool

Skip(self, 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.

Without Skip (or equivalently if Skip(false) is used), the event will not be processed any more. If Skip(true) is called, the event processing system continues searching for a further handler function for this event, even though it has been processed already in the current handler.

In general, it is recommended to skip all non-command events to allow the default handling to take place. The command events are, however, normally not skipped as usually a single command such as a button click or menu item selection must only be processed by one handler.

Parameters:

skip (bool)

Return type:

None

StopPropagation(self)¶

Stop the event from propagating to its parent window.

Returns the old propagation level value which may be later passed to ResumePropagation to allow propagating the event again.

Return type:

int

Properties¶

EventObject¶

See GetEventObject and SetEventObject

EventType¶

See GetEventType and SetEventType

Id¶

See GetId and SetId

Skipped¶

See GetSkipped

Timestamp¶

See GetTimestamp and SetTimestamp

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