NotifyEvent

This class is not used by the event handlers by itself, but is a base class for other event classes (such as BookCtrlEvent).

It (or an object of a derived class) is sent when the controls state is being changed and allows the program to NotifyEvent.Veto this change if it wants to prevent it from happening.

See also

BookCtrlEvent

Inheritance Diagram

Inheritance diagram for class NotifyEvent

Known Subclasses

AuiToolBarEvent, BookCtrlEvent, DataViewEvent, GridEvent, GridRangeSelectEvent, GridSizeEvent, HeaderCtrlEvent, ListEvent, MediaEvent, RibbonBarEvent, RichTextEvent, SpinDoubleEvent, SpinEvent, SplitterEvent, TreeEvent, TreeListEvent, WebViewEvent, WizardEvent

Methods Summary

__init__	Constructor (used internally by wxWidgets only).
Allow	This is the opposite of Veto : it explicitly allows the event to be processed.
IsAllowed	Returns True if the change is allowed ( Veto hasn’t been called) or False otherwise (if it was).
Veto	Prevents the change announced by this event from happening.

Class API

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class NotifyEvent(CommandEvent)

This class is not used by the event handlers by itself, but is a base class for other event classes (such as BookCtrlEvent).

Possible constructors:

NotifyEvent(eventType=wxEVT_NULL, id=0)

Methods

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

Constructor (used internally by wxWidgets only).

Parameters:

• eventType (EventType) –
• id (int) –

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Allow(self)

This is the opposite of Veto : it explicitly allows the event to be processed.

For most events it is not necessary to call this method as the events are allowed anyhow but some are forbidden by default (this will be mentioned in the corresponding event description).

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IsAllowed(self)

Returns True if the change is allowed ( Veto hasn’t been called) or False otherwise (if it was).

Return type:bool

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Veto(self)

Prevents the change announced by this event from happening.

It is in general a good idea to notify the user about the reasons for vetoing the change because otherwise the applications behaviour (which just refuses to do what the user wants) might be quite surprising.