.. include:: headings.inc



.. _EraseEvent:

==========================================================================================================================================
|phoenix_title|  **EraseEvent**
==========================================================================================================================================

An erase event is sent when a window's background needs to be repainted.          

On some platforms, such as GTK+, this event is simulated (simply generated just before the paint event) and may cause flicker. It is therefore recommended that you set the text background colour explicitly in order to prevent flicker. The default background colour under GTK+ is grey. 

To intercept this event, use the ``EVT_ERASE_BACKGROUND`` macro in an event table definition. 

You must use the device context returned by :meth:`~EraseEvent.GetDC`  to draw on, don't create a :ref:`PaintDC`  in the event handler. 





.. _EraseEvent-events:

|events| Events Emitted by this Class
=====================================

Handlers bound for the following event types will receive a :ref:`EraseEvent` parameter.

- EVT_ERASE_BACKGROUND: Process a  ``wxEVT_ERASE_BACKGROUND``   event.   








         



.. seealso:: :ref:`Events and Event Handling <events and event handling>`    







|

|class_hierarchy| Inheritance Diagram
=====================================

Inheritance diagram for class **EraseEvent**

.. raw:: html

   <p class="graphviz">
   <img src="_static/images/inheritance/EraseEvent_inheritance.png" alt="Inheritance diagram of EraseEvent" usemap="#dummy" class="inheritance"/>
   <map id="dummy" name="dummy"> <area shape="rect" id="node1" href="Event.html" title="An event is a structure holding information about an event passed to a callback or member function." alt="" coords="125,5,197,35"/> <area shape="rect" id="node4" href="EraseEvent.html" title="An erase event is sent when a window's background needs to be repainted." alt="" coords="247,5,351,35"/> <area shape="rect" id="node2" href="Object.html" title="This is the root class of many of the wxWidgets classes." alt="" coords="5,5,77,35"/> </map> 
   </p>

|


|method_summary| Methods Summary
================================

================================================================================ ================================================================================
:meth:`~EraseEvent.__init__`                                                     Constructor.
:meth:`~EraseEvent.GetDC`                                                        Returns the device context associated with the erase event to draw on.
================================================================================ ================================================================================


|


|property_summary| Properties Summary
=====================================

================================================================================ ================================================================================
:attr:`~EraseEvent.DC`                                                           See :meth:`~EraseEvent.GetDC`
================================================================================ ================================================================================


|


|api| Class API
===============
   

.. class:: EraseEvent(Event)

   An erase event is sent when a window's background needs to be repainted.
   
   **Possible constructors**::

       EraseEvent(id=0, dc=None)
       



   .. method:: __init__(self, id=0, dc=None)

      Constructor.                  


      :param `id`: 
      :type `id`: int
      :param `dc`: 
      :type `dc`: DC







   .. method:: GetDC(self)

      Returns the device context associated with the erase event to draw on.                  

      The returned pointer is never ``None``.                  

      :rtype: :ref:`DC`








   .. attribute:: DC

      See :meth:`~EraseEvent.GetDC`