/usr/include/wx-3.0/wx/gdiobj.h is in wx3.0-headers 3.0.4+dfsg-3.
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/gdiobj.h
// Purpose: wxGDIObject base header
// Author: Julian Smart
// Modified by:
// Created:
// Copyright: (c) Julian Smart
// Licence: wxWindows Licence
/////////////////////////////////////////////////////////////////////////////
#ifndef _WX_GDIOBJ_H_BASE_
#define _WX_GDIOBJ_H_BASE_
#include "wx/object.h"
// ----------------------------------------------------------------------------
// wxGDIRefData is the base class for wxXXXData structures which contain the
// real data for the GDI object and are shared among all wxWin objects sharing
// the same native GDI object
// ----------------------------------------------------------------------------
class WXDLLIMPEXP_CORE wxGDIRefData : public wxObjectRefData
{
public:
// Default ctor which needs to be defined just because we use
// wxDECLARE_NO_COPY_CLASS() below.
wxGDIRefData() { }
// override this in the derived classes to check if this data object is
// really fully initialized
virtual bool IsOk() const { return true; }
private:
wxDECLARE_NO_COPY_CLASS(wxGDIRefData);
};
// ----------------------------------------------------------------------------
// wxGDIObject: base class for bitmaps, pens, brushes, ...
// ----------------------------------------------------------------------------
class WXDLLIMPEXP_CORE wxGDIObject : public wxObject
{
public:
// checks if the object can be used
virtual bool IsOk() const
{
// the cast here is safe because the derived classes always create
// wxGDIRefData objects
return m_refData && static_cast<wxGDIRefData *>(m_refData)->IsOk();
}
// don't use in the new code, use IsOk() instead
bool IsNull() const { return m_refData == NULL; }
// older version, for backwards compatibility only (but not deprecated
// because it's still widely used)
bool Ok() const { return IsOk(); }
#if defined(__WXMSW__) || defined(__WXPM__)
// Creates the resource
virtual bool RealizeResource() { return false; }
// Frees the resource
virtual bool FreeResource(bool WXUNUSED(force) = false) { return false; }
virtual bool IsFree() const { return false; }
// Returns handle.
virtual WXHANDLE GetResourceHandle() const { return 0; }
#endif // defined(__WXMSW__) || defined(__WXPM__)
protected:
// replace base class functions using wxObjectRefData with our own which
// use wxGDIRefData to ensure that we always work with data objects of the
// correct type (i.e. derived from wxGDIRefData)
virtual wxObjectRefData *CreateRefData() const
{
return CreateGDIRefData();
}
virtual wxObjectRefData *CloneRefData(const wxObjectRefData *data) const
{
return CloneGDIRefData(static_cast<const wxGDIRefData *>(data));
}
virtual wxGDIRefData *CreateGDIRefData() const = 0;
virtual wxGDIRefData *CloneGDIRefData(const wxGDIRefData *data) const = 0;
DECLARE_DYNAMIC_CLASS(wxGDIObject)
};
#endif // _WX_GDIOBJ_H_BASE_
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