object.h

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 IMPLEMENT_ABSTRACT_PLUGGABLE_CLASS(name, basename)
#define IMPLEMENT_USER_EXPORTED_ABSTRACT_PLUGGABLE_CLASS2(name, basename1, basename2)  \
 IMPLEMENT_ABSTRACT_PLUGGABLE_CLASS2(name, basename1, basename2)

#define CLASSINFO(name) (&name::ms_classInfo)

#define wxIS_KIND_OF(obj, className) obj->IsKindOf(&className::ms_classInfo)

// Just seems a bit nicer-looking (pretend it's not a macro)
#define wxIsKindOf(obj, className) obj->IsKindOf(&className::ms_classInfo)

// this cast does some more checks at compile time as it uses static_cast
// internally
//
// note that it still has different semantics from dynamic_cast<> and so can't
// be replaced by it as long as there are any compilers not supporting it
#define wxDynamicCast(obj, className) \
    ((className *) wxCheckDynamicCast( \
        wx_const_cast(wxObject *, wx_static_cast(const wxObject *, \
          wx_const_cast(className *, wx_static_cast(const className *, obj)))), \
        &className::ms_classInfo))

// The 'this' pointer is always true, so use this version
// to cast the this pointer and avoid compiler warnings.
#define wxDynamicCastThis(className) \
     (IsKindOf(&className::ms_classInfo) ? (className *)(this) : (className *)0)

#ifdef __WXDEBUG__
inline void* wxCheckCast(void *ptr)
{
    wxASSERT_MSG( ptr, _T("wxStaticCast() used incorrectly") );
    return ptr;
}
#define wxStaticCast(obj, className) \
 ((className *)wxCheckCast(wxDynamicCast(obj, className)))

#else  // !__WXDEBUG__
#define wxStaticCast(obj, className) \
    wx_const_cast(className *, wx_static_cast(const className *, obj))

#endif  // __WXDEBUG__

// ----------------------------------------------------------------------------
// set up memory debugging macros
// ----------------------------------------------------------------------------

/*
    Which new/delete operator variants do we want?

    _WX_WANT_NEW_SIZET_WXCHAR_INT             = void *operator new (size_t size, wxChar *fileName = 0, int lineNum = 0)
    _WX_WANT_DELETE_VOID                      = void operator delete (void * buf)
    _WX_WANT_DELETE_VOID_CONSTCHAR_SIZET      = void operator delete (void *buf, const char *_fname, size_t _line)
    _WX_WANT_DELETE_VOID_WXCHAR_INT           = void operator delete(void *buf, wxChar*, int)
    _WX_WANT_ARRAY_NEW_SIZET_WXCHAR_INT       = void *operator new[] (size_t size, wxChar *fileName , int lineNum = 0)
    _WX_WANT_ARRAY_DELETE_VOID                = void operator delete[] (void *buf)
    _WX_WANT_ARRAY_DELETE_VOID_WXCHAR_INT     = void operator delete[] (void* buf, wxChar*, int )
*/

#if defined(__WXDEBUG__) && wxUSE_MEMORY_TRACING

// All compilers get this one
#define _WX_WANT_NEW_SIZET_WXCHAR_INT

// Everyone except Visage gets the next one
#ifndef __VISAGECPP__
    #define _WX_WANT_DELETE_VOID
#endif

// Only visage gets this one under the correct circumstances
#if defined(__VISAGECPP__) && __DEBUG_ALLOC__
    #define _WX_WANT_DELETE_VOID_CONSTCHAR_SIZET
#endif

// Only VC++ 6.0 and CodeWarrior compilers get overloaded delete that matches new
#if ( defined(__VISUALC__) && (__VISUALC__ >= 1200) ) || (defined(__MWERKS__) && (__MWERKS__ >= 0x2400))
    #define _WX_WANT_DELETE_VOID_WXCHAR_INT
#endif

// Now see who (if anyone) gets the array memory operators
#if wxUSE_ARRAY_MEMORY_OPERATORS

    // Everyone except Visual C++ (cause problems for VC++ - crashes)
    #if !defined(__VISUALC__)
        #define _WX_WANT_ARRAY_NEW_SIZET_WXCHAR_INT
    #endif

    // Everyone except Visual C++ (cause problems for VC++ - crashes)
    #if !defined(__VISUALC__)
        #define _WX_WANT_ARRAY_DELETE_VOID
    #endif

    // Only CodeWarrior 6 or higher
    #if defined(__MWERKS__) && (__MWERKS__ >= 0x2400)
        #define _WX_WANT_ARRAY_DELETE_VOID_WXCHAR_INT
    #endif

#endif // wxUSE_ARRAY_MEMORY_OPERATORS

#endif // __WXDEBUG__ && wxUSE_MEMORY_TRACING

// ----------------------------------------------------------------------------
// wxObject: the root class of wxWidgets object hierarchy
// ----------------------------------------------------------------------------

class WXDLLIMPEXP_BASE wxObject
{
    DECLARE_ABSTRACT_CLASS(wxObject)

private:
    void InitFrom(const wxObject& other);

public:
    wxObject() { m_refData = NULL; }
    virtual ~wxObject() { UnRef(); }

    wxObject(const wxObject& other)
    {
        InitFrom(other);
    }

    wxObject& operator=(const wxObject& other)
    {
        if ( this != &other )
        {
            UnRef();
            InitFrom(other);
        }
        return *this;
    }

    bool IsKindOf(wxClassInfo *info) const;


    // Turn on the correct set of new and delete operators

#ifdef _WX_WANT_NEW_SIZET_WXCHAR_INT
    void *operator new ( size_t size, const wxChar *fileName = NULL, int lineNum = 0 );
#endif

#ifdef _WX_WANT_DELETE_VOID
    void operator delete ( void * buf );
#endif

#ifdef _WX_WANT_DELETE_VOID_CONSTCHAR_SIZET
    void operator delete ( void *buf, const char *_fname, size_t _line );
#endif

#ifdef _WX_WANT_DELETE_VOID_WXCHAR_INT
    void operator delete ( void *buf, const wxChar*, int );
#endif

#ifdef _WX_WANT_ARRAY_NEW_SIZET_WXCHAR_INT
    void *operator new[] ( size_t size, const wxChar *fileName = NULL, int lineNum = 0 );
#endif

#ifdef _WX_WANT_ARRAY_DELETE_VOID
    void operator delete[] ( void *buf );
#endif

#ifdef _WX_WANT_ARRAY_DELETE_VOID_WXCHAR_INT
    void operator delete[] (void* buf, const wxChar*, int );
#endif

    // ref counted data handling methods

    // get/set
    wxObjectRefData *GetRefData() const { return m_refData; }
    void SetRefData(wxObjectRefData *data) { m_refData = data; }

    // make a 'clone' of the object
    void Ref(const wxObject& clone);

    // destroy a reference
    void UnRef();


    // Reserved for future use
    virtual void ReservedObjectFunc1() {}
    virtual void ReservedObjectFunc2() {}
    virtual void ReservedObjectFunc3() {}
    virtual void ReservedObjectFunc4() {}
    virtual void ReservedObjectFunc5() {}
    virtual void ReservedObjectFunc6() {}
    virtual void ReservedObjectFunc7() {}
    virtual void ReservedObjectFunc8() {}
    virtual void ReservedObjectFunc9() {}

protected:
    // ensure that our data is not shared with anybody else: if we have no
    // data, it is created using CreateRefData() below, if we have shared data
    // it is copied using CloneRefData(), otherwise nothing is done
    void AllocExclusive();

    // both methods must be implemented if Unshare() is used, not pure virtual
    // only because of the backwards compatibility reasons

    // create a new m_refData
    virtual wxObjectRefData *CreateRefData() const;

    // create a new m_refData initialized with the given one
    virtual wxObjectRefData *CloneRefData(const wxObjectRefData *data) const;

    wxObjectRefData *m_refData;
};

// ----------------------------------------------------------------------------
// wxObjectRefData: ref counted data meant to be stored in wxObject
// ----------------------------------------------------------------------------

class WXDLLIMPEXP_BASE wxObjectRefData
{
    friend class WXDLLIMPEXP_BASE wxObject;

public:
    wxObjectRefData() : m_count(1) { }
    virtual ~wxObjectRefData() { }

    int GetRefCount() const { return m_count; }

private:
    int m_count;
};


inline wxObject *wxCheckDynamicCast(wxObject *obj, wxClassInfo *classInfo)
{
    return obj && obj->GetClassInfo()->IsKindOf(classInfo) ? obj : NULL;
}

#if wxUSE_EXTENDED_RTTI
class WXDLLIMPEXP_BASE wxDynamicObject : public wxObject
{
    friend class WXDLLIMPEXP_BASE wxDynamicClassInfo ;
public:
    // instantiates this object with an instance of its superclass
    wxDynamicObject(wxObject* superClassInstance, const wxDynamicClassInfo *info) ;
    ~wxDynamicObject();

    void SetProperty (const wxChar *propertyName, const wxxVariant &value);
    wxxVariant GetProperty (const wxChar *propertyName) const ;

    // get the runtime identity of this object
    wxClassInfo *GetClassInfo() const
    {
#ifdef _MSC_VER
        return (wxClassInfo*) m_classInfo;
#else
        return wx_const_cast(wxClassInfo *, m_classInfo);
#endif
    }

    wxObject* GetSuperClassInstance() const
    {
        return m_superClassInstance ;
    }
private :
    // removes an existing runtime-property
    void RemoveProperty( const wxChar *propertyName ) ;

    // renames an existing runtime-property
    void RenameProperty( const wxChar *oldPropertyName , const wxChar *newPropertyName ) ;

    wxObject *m_superClassInstance ;
    const wxDynamicClassInfo *m_classInfo;
    struct wxDynamicObjectInternal;
    wxDynamicObjectInternal *m_data;
};
#endif

// ----------------------------------------------------------------------------
// more debugging macros
// ----------------------------------------------------------------------------

#ifdef __WXDEBUG__
    #ifndef WXDEBUG_NEW
        #define WXDEBUG_NEW new(__TFILE__,__LINE__)
    #endif
#else // !__WXDEBUG__
    #define WXDEBUG_NEW new
#endif

// Redefine new to be the debugging version. This doesn't work with all
// compilers, in which case you need to use WXDEBUG_NEW explicitly if you wish
// to use the debugging version.

#if defined(__WXDEBUG__) && wxUSE_GLOBAL_MEMORY_OPERATORS && wxUSE_DEBUG_NEW_ALWAYS
    #define new new(__TFILE__,__LINE__)
#elif (defined(__WXDEBUG__) && defined(__VISUALC__) && !wxUSE_GLOBAL_MEMORY_OPERATORS && wxUSE_DEBUG_NEW_ALWAYS)
    // Including this file redefines new and allows leak reports to contain line numbers
    #include "wx/msw/msvcrt.h"
#endif

#endif  // _WX_OBJECTH__