/usr/include/wx-2.8/wx/dcmemory.h is in wx2.8-headers 2.8.12.1-6ubuntu2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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// Name: wx/dcmemory.h
// Purpose: wxMemoryDC base header
// Author: Julian Smart
// Modified by:
// Created:
// Copyright: (c) Julian Smart
// RCS-ID: $Id: dcmemory.h 43843 2006-12-07 05:44:44Z PC $
// Licence: wxWindows Licence
/////////////////////////////////////////////////////////////////////////////
#ifndef _WX_DCMEMORY_H_BASE_
#define _WX_DCMEMORY_H_BASE_
#include "wx/bitmap.h"
// NOTE: different native implementations of wxMemoryDC will derive from
// different wxDC classes (wxPaintDC, wxWindowDC, etc), so that
// we cannot derive wxMemoryDCBase from wxDC and then use it as the
// only base class for native impl of wxMemoryDC...
class WXDLLEXPORT wxMemoryDCBase
{
public:
wxMemoryDCBase() { }
// avoid warnings about having virtual functions but non virtual dtor
virtual ~wxMemoryDCBase() { }
// select the given bitmap to draw on it
void SelectObject(wxBitmap& bmp)
{
// make sure that the given wxBitmap is not sharing its data with other
// wxBitmap instances as its contents will be modified by any drawing
// operation done on this DC
if (bmp.IsOk())
bmp.UnShare();
DoSelect(bmp);
}
// select the given bitmap for read-only
virtual void SelectObjectAsSource(const wxBitmap& bmp)
{
DoSelect(bmp);
}
protected:
virtual void DoSelect(const wxBitmap& bmp) = 0;
};
#if defined(__WXPALMOS__)
#include "wx/palmos/dcmemory.h"
#elif defined(__WXMSW__)
#include "wx/msw/dcmemory.h"
#elif defined(__WXMOTIF__)
#include "wx/motif/dcmemory.h"
#elif defined(__WXGTK20__)
#include "wx/gtk/dcmemory.h"
#elif defined(__WXGTK__)
#include "wx/gtk1/dcmemory.h"
#elif defined(__WXX11__)
#include "wx/x11/dcmemory.h"
#elif defined(__WXMGL__)
#include "wx/mgl/dcmemory.h"
#elif defined(__WXDFB__)
#include "wx/dfb/dcmemory.h"
#elif defined(__WXMAC__)
#include "wx/mac/dcmemory.h"
#elif defined(__WXCOCOA__)
#include "wx/cocoa/dcmemory.h"
#elif defined(__WXPM__)
#include "wx/os2/dcmemory.h"
#endif
#endif
// _WX_DCMEMORY_H_BASE_
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