wxWidgets/include/wx/msw/gdiobj.h

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/////////////////////////////////////////////////////////////////////////////
// Name: wx/msw/gdiobj.h
// Purpose: wxGDIObject class: base class for other GDI classes
// Author: Julian Smart
// Modified by:
// Created: 01/02/97
// RCS-ID: $Id$
// Copyright: (c) Julian Smart
// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
#ifndef _WX_GDIOBJ_H_
#define _WX_GDIOBJ_H_
#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
#pragma interface "gdiobj.h"
#endif
#include "wx/object.h" // base class
// ----------------------------------------------------------------------------
// 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 WXDLLEXPORT wxGDIRefData : public wxObjectRefData
{
// this class is intentionally left blank
};
// ----------------------------------------------------------------------------
// wxGDIObject
// ----------------------------------------------------------------------------
class WXDLLEXPORT wxGDIObject : public wxObject
{
public:
wxGDIObject() { m_visible = false; };
// 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; }
bool IsNull() const { return (m_refData == 0); }
// Returns handle.
virtual WXHANDLE GetResourceHandle() const { return 0; }
virtual bool GetVisible() { return m_visible; }
virtual void SetVisible(bool v) { m_visible = v; }
protected:
bool m_visible; // true only if we should delete this object ourselves
private:
DECLARE_DYNAMIC_CLASS(wxGDIObject)
};
#endif
// _WX_GDIOBJ_H_