wxEraseEvent Class Reference

#include </home/zeitlin/src/wx/github/interface/wx/event.h>

Inheritance diagram for wxEraseEvent:

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Detailed Description

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 GetDC() to draw on, don't create a wxPaintDC in the event handler.

Events using this class

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

void handlerFuncName(wxEraseEvent& event)

Event macros:

• EVT_ERASE_BACKGROUND(func):
  Process a wxEVT_ERASE_BACKGROUND event.

Library:  wxCore

Category:  Events

参照:

イベントとイベント処理

Public Member Functions
	wxEraseEvent (int id=0, wxDC *dc=NULL)
	Constructor.
wxDC *	GetDC () const
	Returns the device context associated with the erase event to draw on.

List of all members.

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Constructor & Destructor Documentation

wxEraseEvent::wxEraseEvent	(	int	id = 0,
		wxDC *	dc = NULL
	)

Constructor.

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Member Function Documentation

wxDC* wxEraseEvent::GetDC

(

)

const

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

The returned pointer is never NULL.