include/wx/object.h

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        wx/object.h
   3 // Purpose:     wxObject class, plus run-time type information macros
   4 // Author:      Julian Smart
   5 // Modified by: Ron Lee
   6 // Created:     01/02/97
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) 1997 Julian Smart
   9 //              (c) 2001 Ron Lee <ron@debian.org>
  10 // Licence:     wxWindows licence
  11 /////////////////////////////////////////////////////////////////////////////
  12
  13 #ifndef _WX_OBJECTH__
  14 #define _WX_OBJECTH__
  15
  16 // ----------------------------------------------------------------------------
  17 // headers
  18 // ----------------------------------------------------------------------------
  19
  20 #include "wx/memory.h"
  21
  22 class WXDLLIMPEXP_BASE wxObject;
  23
  24 #ifndef wxUSE_EXTENDED_RTTI
  25 #define wxUSE_EXTENDED_RTTI 0
  26 #endif
  27
  28 #if wxUSE_EXTENDED_RTTI
  29 #include "wx/xti.h"
  30 #else
  31
  32 // ----------------------------------------------------------------------------
  33 // conditional compilation
  34 // ----------------------------------------------------------------------------
  35
  36 class WXDLLIMPEXP_BASE wxClassInfo;
  37 class WXDLLIMPEXP_BASE wxHashTable;
  38 class WXDLLIMPEXP_BASE wxObjectRefData;
  39
  40 // ----------------------------------------------------------------------------
  41 // wxClassInfo
  42 // ----------------------------------------------------------------------------
  43
  44 typedef wxObject *(*wxObjectConstructorFn)(void);
  45
  46 class WXDLLIMPEXP_BASE wxClassInfo
  47 {
  48 public:
  49     wxClassInfo( const wxChar *className,
  50                  const wxClassInfo *baseInfo1,
  51                  const wxClassInfo *baseInfo2,
  52                  int size,
  53                  wxObjectConstructorFn ctor )
  54         : m_className(className)
  55         , m_objectSize(size)
  56         , m_objectConstructor(ctor)
  57         , m_baseInfo1(baseInfo1)
  58         , m_baseInfo2(baseInfo2)
  59         , m_next(sm_first)
  60         {
  61             sm_first = this;
  62             Register();
  63         }
  64
  65     ~wxClassInfo();
  66
  67     wxObject *CreateObject() const
  68         { return m_objectConstructor ? (*m_objectConstructor)() : 0; }
  69     bool IsDynamic() const { return (NULL != m_objectConstructor); }
  70
  71     const wxChar       *GetClassName() const { return m_className; }
  72     const wxChar       *GetBaseClassName1() const
  73         { return m_baseInfo1 ? m_baseInfo1->GetClassName() : NULL; }
  74     const wxChar       *GetBaseClassName2() const
  75         { return m_baseInfo2 ? m_baseInfo2->GetClassName() : NULL; }
  76     const wxClassInfo  *GetBaseClass1() const { return m_baseInfo1; }
  77     const wxClassInfo  *GetBaseClass2() const { return m_baseInfo2; }
  78     int                 GetSize() const { return m_objectSize; }
  79
  80     wxObjectConstructorFn      GetConstructor() const
  81         { return m_objectConstructor; }
  82     static const wxClassInfo  *GetFirst() { return sm_first; }
  83     const wxClassInfo         *GetNext() const { return m_next; }
  84     static wxClassInfo        *FindClass(const wxChar *className);
  85
  86         // Climb upwards through inheritance hierarchy.
  87         // Dual inheritance is catered for.
  88
  89     bool IsKindOf(const wxClassInfo *info) const
  90     {
  91         return info != 0 &&
  92                ( info == this ||
  93                  ( m_baseInfo1 && m_baseInfo1->IsKindOf(info) ) ||
  94                  ( m_baseInfo2 && m_baseInfo2->IsKindOf(info) ) );
  95     }
  96
  97 public:
  98     const wxChar            *m_className;
  99     int                      m_objectSize;
 100     wxObjectConstructorFn    m_objectConstructor;
 101
 102         // Pointers to base wxClassInfos: set in InitializeClasses
 103
 104     const wxClassInfo       *m_baseInfo1;
 105     const wxClassInfo       *m_baseInfo2;
 106
 107         // class info object live in a linked list:
 108         // pointers to its head and the next element in it
 109
 110     static wxClassInfo      *sm_first;
 111     wxClassInfo             *m_next;
 112
 113     // FIXME: this should be private (currently used directly by way too
 114     //        many clients)
 115     static wxHashTable      *sm_classTable;
 116
 117 private:
 118     // InitializeClasses() helper
 119     static wxClassInfo *GetBaseByName(const wxChar *name);
 120
 121     DECLARE_NO_COPY_CLASS(wxClassInfo)
 122
 123 protected:
 124     // registers the class
 125     void Register();
 126     void Unregister();
 127 };
 128
 129 WXDLLIMPEXP_BASE wxObject *wxCreateDynamicObject(const wxChar *name);
 130
 131 // ----------------------------------------------------------------------------
 132 // Dynamic class macros
 133 // ----------------------------------------------------------------------------
 134
 135 #define DECLARE_ABSTRACT_CLASS(name)                                          \
 136     public:                                                                   \
 137         static wxClassInfo ms_classInfo;                                      \
 138         virtual wxClassInfo *GetClassInfo() const;
 139
 140 #define DECLARE_DYNAMIC_CLASS_NO_ASSIGN(name)                                 \
 141     DECLARE_NO_ASSIGN_CLASS(name)                                             \
 142     DECLARE_DYNAMIC_CLASS(name)
 143
 144 #define DECLARE_DYNAMIC_CLASS_NO_COPY(name)                                   \
 145     DECLARE_NO_COPY_CLASS(name)                                               \
 146     DECLARE_DYNAMIC_CLASS(name)
 147
 148 #define DECLARE_DYNAMIC_CLASS(name)                                           \
 149     DECLARE_ABSTRACT_CLASS(name)                                              \
 150     static wxObject* wxCreateObject();
 151
 152 #define DECLARE_CLASS(name) DECLARE_DYNAMIC_CLASS(name)
 153
 154
 155 // common part of the macros below
 156 #define wxIMPLEMENT_CLASS_COMMON(name, basename, baseclsinfo2, func)          \
 157     wxClassInfo name::ms_classInfo(wxT(#name),                                \
 158             &basename::ms_classInfo,                                          \
 159             baseclsinfo2,                                                     \
 160             (int) sizeof(name),                                               \
 161             (wxObjectConstructorFn) func);                                    \
 162                                                                               \
 163     wxClassInfo *name::GetClassInfo() const                                   \
 164         { return &name::ms_classInfo; }
 165
 166 #define wxIMPLEMENT_CLASS_COMMON1(name, basename, func)                       \
 167     wxIMPLEMENT_CLASS_COMMON(name, basename, NULL, func)
 168
 169 #define wxIMPLEMENT_CLASS_COMMON2(name, basename1, basename2, func)           \
 170     wxIMPLEMENT_CLASS_COMMON(name, basename1, &basename2::ms_classInfo, func)
 171
 172 // -----------------------------------
 173 // for concrete classes
 174 // -----------------------------------
 175
 176     // Single inheritance with one base class
 177 #define IMPLEMENT_DYNAMIC_CLASS(name, basename)                               \
 178     wxIMPLEMENT_CLASS_COMMON1(name, basename, name::wxCreateObject)           \
 179     wxObject* name::wxCreateObject()                                          \
 180         { return new name; }
 181
 182     // Multiple inheritance with two base classes
 183 #define IMPLEMENT_DYNAMIC_CLASS2(name, basename1, basename2)                  \
 184     wxIMPLEMENT_CLASS_COMMON2(name, basename1, basename2,                     \
 185                               name::wxCreateObject)                           \
 186     wxObject* name::wxCreateObject()                                          \
 187         { return new name; }
 188
 189 // -----------------------------------
 190 // for abstract classes
 191 // -----------------------------------
 192
 193     // Single inheritance with one base class
 194
 195 #define IMPLEMENT_ABSTRACT_CLASS(name, basename)                              \
 196     wxIMPLEMENT_CLASS_COMMON1(name, basename, NULL)
 197
 198     // Multiple inheritance with two base classes
 199
 200 #define IMPLEMENT_ABSTRACT_CLASS2(name, basename1, basename2)                 \
 201     wxIMPLEMENT_CLASS_COMMON2(name, basename1, basename2, NULL)
 202
 203 #define IMPLEMENT_CLASS IMPLEMENT_ABSTRACT_CLASS
 204 #define IMPLEMENT_CLASS2 IMPLEMENT_ABSTRACT_CLASS2
 205
 206 #endif // !wxUSE_EXTENDED_RTTI
 207
 208
 209 // -----------------------------------
 210 // for pluggable classes
 211 // -----------------------------------
 212
 213     // NOTE: this should probably be the very first statement
 214     //       in the class declaration so wxPluginSentinel is
 215     //       the first member initialised and the last destroyed.
 216
 217 // _DECLARE_DL_SENTINEL(name) wxPluginSentinel m_pluginsentinel;
 218
 219 #if wxUSE_NESTED_CLASSES
 220
 221 #define _DECLARE_DL_SENTINEL(name, exportdecl)  \
 222 class exportdecl name##PluginSentinel {         \
 223 private:                                        \
 224     static const wxString sm_className;         \
 225 public:                                         \
 226     name##PluginSentinel();                     \
 227     ~name##PluginSentinel();                    \
 228 };                                              \
 229 name##PluginSentinel  m_pluginsentinel;
 230
 231 #define _IMPLEMENT_DL_SENTINEL(name)                                \
 232  const wxString name::name##PluginSentinel::sm_className(#name);    \
 233  name::name##PluginSentinel::name##PluginSentinel() {               \
 234     wxPluginLibrary *e = (wxPluginLibrary*) wxPluginLibrary::ms_classes.Get(#name);   \
 235     if( e != 0 ) { e->RefObj(); }                                      \
 236  }                                                                  \
 237  name::name##PluginSentinel::~name##PluginSentinel() {            \
 238     wxPluginLibrary *e = (wxPluginLibrary*) wxPluginLibrary::ms_classes.Get(#name);   \
 239     if( e != 0 ) { e->UnrefObj(); }                                 \
 240  }
 241 #else
 242
 243 #define _DECLARE_DL_SENTINEL(name)
 244 #define _IMPLEMENT_DL_SENTINEL(name)
 245
 246 #endif  // wxUSE_NESTED_CLASSES
 247
 248 #define DECLARE_PLUGGABLE_CLASS(name) \
 249  DECLARE_DYNAMIC_CLASS(name) _DECLARE_DL_SENTINEL(name, WXDLLEXPORT)
 250 #define DECLARE_ABSTRACT_PLUGGABLE_CLASS(name)  \
 251  DECLARE_ABSTRACT_CLASS(name) _DECLARE_DL_SENTINEL(name, WXDLLEXPORT)
 252
 253 #define DECLARE_USER_EXPORTED_PLUGGABLE_CLASS(name, usergoo) \
 254  DECLARE_DYNAMIC_CLASS(name) _DECLARE_DL_SENTINEL(name, usergoo)
 255 #define DECLARE_USER_EXPORTED_ABSTRACT_PLUGGABLE_CLASS(name, usergoo)  \
 256  DECLARE_ABSTRACT_CLASS(name) _DECLARE_DL_SENTINEL(name, usergoo)
 257
 258 #define IMPLEMENT_PLUGGABLE_CLASS(name, basename) \
 259  IMPLEMENT_DYNAMIC_CLASS(name, basename) _IMPLEMENT_DL_SENTINEL(name)
 260 #define IMPLEMENT_PLUGGABLE_CLASS2(name, basename1, basename2)  \
 261  IMPLEMENT_DYNAMIC_CLASS2(name, basename1, basename2) _IMPLEMENT_DL_SENTINEL(name)
 262 #define IMPLEMENT_ABSTRACT_PLUGGABLE_CLASS(name, basename) \
 263  IMPLEMENT_ABSTRACT_CLASS(name, basename) _IMPLEMENT_DL_SENTINEL(name)
 264 #define IMPLEMENT_ABSTRACT_PLUGGABLE_CLASS2(name, basename1, basename2)  \
 265  IMPLEMENT_ABSTRACT_CLASS2(name, basename1, basename2) _IMPLEMENT_DL_SENTINEL(name)
 266
 267 #define IMPLEMENT_USER_EXPORTED_PLUGGABLE_CLASS(name, basename) \
 268  IMPLEMENT_PLUGGABLE_CLASS(name, basename)
 269 #define IMPLEMENT_USER_EXPORTED_PLUGGABLE_CLASS2(name, basename1, basename2)  \
 270  IMPLEMENT_PLUGGABLE_CLASS2(name, basename1, basename2)
 271 #define IMPLEMENT_USER_EXPORTED_ABSTRACT_PLUGGABLE_CLASS(name, basename) \
 272  IMPLEMENT_ABSTRACT_PLUGGABLE_CLASS(name, basename)
 273 #define IMPLEMENT_USER_EXPORTED_ABSTRACT_PLUGGABLE_CLASS2(name, basename1, basename2)  \
 274  IMPLEMENT_ABSTRACT_PLUGGABLE_CLASS2(name, basename1, basename2)
 275
 276 #define CLASSINFO(name) (&name::ms_classInfo)
 277
 278 #define wxIS_KIND_OF(obj, className) obj->IsKindOf(&className::ms_classInfo)
 279
 280 // Just seems a bit nicer-looking (pretend it's not a macro)
 281 #define wxIsKindOf(obj, className) obj->IsKindOf(&className::ms_classInfo)
 282
 283 // this cast does some more checks at compile time as it uses static_cast
 284 // internally
 285 //
 286 // note that it still has different semantics from dynamic_cast<> and so can't
 287 // be replaced by it as long as there are any compilers not supporting it
 288 #define wxDynamicCast(obj, className) \
 289     ((className *) wxCheckDynamicCast( \
 290         wx_const_cast(wxObject *, wx_static_cast(const wxObject *, \
 291           wx_const_cast(className *, wx_static_cast(const className *, obj)))), \
 292         &className::ms_classInfo))
 293
 294 // The 'this' pointer is always true, so use this version
 295 // to cast the this pointer and avoid compiler warnings.
 296 #define wxDynamicCastThis(className) \
 297      (IsKindOf(&className::ms_classInfo) ? (className *)(this) : (className *)0)
 298
 299 #ifdef __WXDEBUG__
 300 inline void* wxCheckCast(void *ptr)
 301 {
 302     wxASSERT_MSG( ptr, _T("wxStaticCast() used incorrectly") );
 303     return ptr;
 304 }
 305 #define wxStaticCast(obj, className) \
 306  ((className *)wxCheckCast(wxDynamicCast(obj, className)))
 307
 308 #else  // !__WXDEBUG__
 309 #define wxStaticCast(obj, className) \
 310     wx_const_cast(className *, wx_static_cast(const className *, obj))
 311
 312 #endif  // __WXDEBUG__
 313
 314 // ----------------------------------------------------------------------------
 315 // set up memory debugging macros
 316 // ----------------------------------------------------------------------------
 317
 318 /*
 319     Which new/delete operator variants do we want?
 320
 321     _WX_WANT_NEW_SIZET_WXCHAR_INT             = void *operator new (size_t size, wxChar *fileName = 0, int lineNum = 0)
 322     _WX_WANT_DELETE_VOID                      = void operator delete (void * buf)
 323     _WX_WANT_DELETE_VOID_CONSTCHAR_SIZET      = void operator delete (void *buf, const char *_fname, size_t _line)
 324     _WX_WANT_DELETE_VOID_WXCHAR_INT           = void operator delete(void *buf, wxChar*, int)
 325     _WX_WANT_ARRAY_NEW_SIZET_WXCHAR_INT       = void *operator new[] (size_t size, wxChar *fileName , int lineNum = 0)
 326     _WX_WANT_ARRAY_DELETE_VOID                = void operator delete[] (void *buf)
 327     _WX_WANT_ARRAY_DELETE_VOID_WXCHAR_INT     = void operator delete[] (void* buf, wxChar*, int )
 328 */
 329
 330 #if defined(__WXDEBUG__) && wxUSE_MEMORY_TRACING
 331
 332 // All compilers get this one
 333 #define _WX_WANT_NEW_SIZET_WXCHAR_INT
 334
 335 // Everyone except Visage gets the next one
 336 #ifndef __VISAGECPP__
 337     #define _WX_WANT_DELETE_VOID
 338 #endif
 339
 340 // Only visage gets this one under the correct circumstances
 341 #if defined(__VISAGECPP__) && __DEBUG_ALLOC__
 342     #define _WX_WANT_DELETE_VOID_CONSTCHAR_SIZET
 343 #endif
 344
 345 // Only VC++ 6 and CodeWarrior get overloaded delete that matches new
 346 #if (defined(__VISUALC__) && (__VISUALC__ >= 1200)) || \
 347         (defined(__MWERKS__) && (__MWERKS__ >= 0x2400))
 348     #define _WX_WANT_DELETE_VOID_WXCHAR_INT
 349 #endif
 350
 351 // Now see who (if anyone) gets the array memory operators
 352 #if wxUSE_ARRAY_MEMORY_OPERATORS
 353
 354     // Everyone except Visual C++ (cause problems for VC++ - crashes)
 355     #if !defined(__VISUALC__)
 356         #define _WX_WANT_ARRAY_NEW_SIZET_WXCHAR_INT
 357     #endif
 358
 359     // Everyone except Visual C++ (cause problems for VC++ - crashes)
 360     #if !defined(__VISUALC__)
 361         #define _WX_WANT_ARRAY_DELETE_VOID
 362     #endif
 363
 364     // Only CodeWarrior 6 or higher
 365     #if defined(__MWERKS__) && (__MWERKS__ >= 0x2400)
 366         #define _WX_WANT_ARRAY_DELETE_VOID_WXCHAR_INT
 367     #endif
 368
 369 #endif // wxUSE_ARRAY_MEMORY_OPERATORS
 370
 371 #endif // __WXDEBUG__ && wxUSE_MEMORY_TRACING
 372
 373 // ----------------------------------------------------------------------------
 374 // wxObjectRefData: ref counted data meant to be stored in wxObject
 375 // ----------------------------------------------------------------------------
 376
 377 class WXDLLIMPEXP_BASE wxObjectRefData
 378 {
 379     friend class WXDLLIMPEXP_BASE wxObject;
 380
 381 public:
 382     wxObjectRefData() : m_count(1) { }
 383
 384     int GetRefCount() const { return m_count; }
 385
 386     void IncRef() { m_count++; }
 387     void DecRef();
 388
 389 protected:
 390     // this object should never be destroyed directly but only as a
 391     // result of a DecRef() call:
 392     virtual ~wxObjectRefData() { }
 393
 394 private:
 395     // our refcount:
 396     int m_count;
 397 };
 398
 399 // ----------------------------------------------------------------------------
 400 // wxObjectDataPtr: helper class to avoid memleaks because of missing calls
 401 //                  to wxObjectRefData::DecRef
 402 // ----------------------------------------------------------------------------
 403
 404 template <class T>
 405 class wxObjectDataPtr
 406 {
 407 public:
 408     typedef T element_type;
 409
 410     wxEXPLICIT wxObjectDataPtr(T *ptr = NULL) : m_ptr(ptr) {}
 411
 412     // copy ctor
 413     wxObjectDataPtr(const wxObjectDataPtr<T> &tocopy)
 414         : m_ptr(tocopy.m_ptr)
 415     {
 416         if (m_ptr)
 417             m_ptr->IncRef();
 418     }
 419
 420     ~wxObjectDataPtr()
 421     {
 422         if (m_ptr)
 423             m_ptr->DecRef();
 424     }
 425
 426     T *get() const { return m_ptr; }
 427     T *operator->() const { return get(); }
 428
 429     void reset(T *ptr)
 430     {
 431         if (m_ptr)
 432             m_ptr->DecRef();
 433         m_ptr = ptr;
 434     }
 435
 436     wxObjectDataPtr& operator=(const wxObjectDataPtr &tocopy)
 437     {
 438         if (m_ptr)
 439             m_ptr->DecRef();
 440         m_ptr = tocopy.m_ptr;
 441         if (m_ptr)
 442             m_ptr->IncRef();
 443         return *this;
 444     }
 445
 446     wxObjectDataPtr& operator=(T *ptr)
 447     {
 448         if (m_ptr)
 449             m_ptr->DecRef();
 450         m_ptr = ptr;
 451         if (m_ptr)
 452             m_ptr->IncRef();
 453         return *this;
 454     }
 455
 456 private:
 457     T *m_ptr;
 458 };
 459
 460 // ----------------------------------------------------------------------------
 461 // wxObject: the root class of wxWidgets object hierarchy
 462 // ----------------------------------------------------------------------------
 463
 464 class WXDLLIMPEXP_BASE wxObject
 465 {
 466     DECLARE_ABSTRACT_CLASS(wxObject)
 467
 468 public:
 469     wxObject() { m_refData = NULL; }
 470     virtual ~wxObject() { UnRef(); }
 471
 472     wxObject(const wxObject& other)
 473     {
 474          m_refData = other.m_refData;
 475          if (m_refData)
 476              m_refData->m_count++;
 477     }
 478
 479     wxObject& operator=(const wxObject& other)
 480     {
 481         if ( this != &other )
 482         {
 483             Ref(other);
 484         }
 485         return *this;
 486     }
 487
 488     bool IsKindOf(wxClassInfo *info) const;
 489
 490
 491     // Turn on the correct set of new and delete operators
 492
 493 #ifdef _WX_WANT_NEW_SIZET_WXCHAR_INT
 494     void *operator new ( size_t size, const wxChar *fileName = NULL, int lineNum = 0 );
 495 #endif
 496
 497 #ifdef _WX_WANT_DELETE_VOID
 498     void operator delete ( void * buf );
 499 #endif
 500
 501 #ifdef _WX_WANT_DELETE_VOID_CONSTCHAR_SIZET
 502     void operator delete ( void *buf, const char *_fname, size_t _line );
 503 #endif
 504
 505 #ifdef _WX_WANT_DELETE_VOID_WXCHAR_INT
 506     void operator delete ( void *buf, const wxChar*, int );
 507 #endif
 508
 509 #ifdef _WX_WANT_ARRAY_NEW_SIZET_WXCHAR_INT
 510     void *operator new[] ( size_t size, const wxChar *fileName = NULL, int lineNum = 0 );
 511 #endif
 512
 513 #ifdef _WX_WANT_ARRAY_DELETE_VOID
 514     void operator delete[] ( void *buf );
 515 #endif
 516
 517 #ifdef _WX_WANT_ARRAY_DELETE_VOID_WXCHAR_INT
 518     void operator delete[] (void* buf, const wxChar*, int );
 519 #endif
 520
 521     // ref counted data handling methods
 522
 523     // get/set
 524     wxObjectRefData *GetRefData() const { return m_refData; }
 525     void SetRefData(wxObjectRefData *data) { m_refData = data; }
 526
 527     // make a 'clone' of the object
 528     void Ref(const wxObject& clone);
 529
 530     // destroy a reference
 531     void UnRef();
 532
 533     // Make sure this object has only one reference
 534     void UnShare() { AllocExclusive(); }
 535
 536     // check if this object references the same data as the other one
 537     bool IsSameAs(const wxObject& o) const { return m_refData == o.m_refData; }
 538
 539 protected:
 540     // ensure that our data is not shared with anybody else: if we have no
 541     // data, it is created using CreateRefData() below, if we have shared data
 542     // it is copied using CloneRefData(), otherwise nothing is done
 543     void AllocExclusive();
 544
 545     // both methods must be implemented if AllocExclusive() is used, not pure
 546     // virtual only because of the backwards compatibility reasons
 547
 548     // create a new m_refData
 549     virtual wxObjectRefData *CreateRefData() const;
 550
 551     // create a new m_refData initialized with the given one
 552     virtual wxObjectRefData *CloneRefData(const wxObjectRefData *data) const;
 553
 554     wxObjectRefData *m_refData;
 555 };
 556
 557 inline wxObject *wxCheckDynamicCast(wxObject *obj, wxClassInfo *classInfo)
 558 {
 559     return obj && obj->GetClassInfo()->IsKindOf(classInfo) ? obj : NULL;
 560 }
 561
 562 #if wxUSE_EXTENDED_RTTI
 563 class WXDLLIMPEXP_BASE wxDynamicObject : public wxObject
 564 {
 565     friend class WXDLLIMPEXP_BASE wxDynamicClassInfo ;
 566 public:
 567     // instantiates this object with an instance of its superclass
 568     wxDynamicObject(wxObject* superClassInstance, const wxDynamicClassInfo *info) ;
 569     virtual ~wxDynamicObject();
 570
 571     void SetProperty (const wxChar *propertyName, const wxxVariant &value);
 572     wxxVariant GetProperty (const wxChar *propertyName) const ;
 573
 574     // get the runtime identity of this object
 575     wxClassInfo *GetClassInfo() const
 576     {
 577 #ifdef _MSC_VER
 578         return (wxClassInfo*) m_classInfo;
 579 #else
 580         wxDynamicClassInfo *nonconst = wx_const_cast(wxDynamicClassInfo *, m_classInfo);
 581         return wx_static_cast(wxClassInfo *, nonconst);
 582 #endif
 583     }
 584
 585     wxObject* GetSuperClassInstance() const
 586     {
 587         return m_superClassInstance ;
 588     }
 589 private :
 590     // removes an existing runtime-property
 591     void RemoveProperty( const wxChar *propertyName ) ;
 592
 593     // renames an existing runtime-property
 594     void RenameProperty( const wxChar *oldPropertyName , const wxChar *newPropertyName ) ;
 595
 596     wxObject *m_superClassInstance ;
 597     const wxDynamicClassInfo *m_classInfo;
 598     struct wxDynamicObjectInternal;
 599     wxDynamicObjectInternal *m_data;
 600 };
 601 #endif
 602
 603 // ----------------------------------------------------------------------------
 604 // more debugging macros
 605 // ----------------------------------------------------------------------------
 606
 607 // Redefine new to be the debugging version. This doesn't work with all
 608 // compilers, in which case you need to use WXDEBUG_NEW explicitly if you wish
 609 // to use the debugging version.
 610
 611 #ifdef __WXDEBUG__
 612     #define WXDEBUG_NEW new(__TFILE__,__LINE__)
 613
 614     #if wxUSE_DEBUG_NEW_ALWAYS
 615         #if wxUSE_GLOBAL_MEMORY_OPERATORS
 616             #define new WXDEBUG_NEW
 617         #elif defined(__VISUALC__)
 618             // Including this file redefines new and allows leak reports to
 619             // contain line numbers
 620             #include "wx/msw/msvcrt.h"
 621         #endif
 622     #endif // wxUSE_DEBUG_NEW_ALWAYS
 623 #else // !__WXDEBUG__
 624     #define WXDEBUG_NEW new
 625 #endif // __WXDEBUG__/!__WXDEBUG__
 626
 627 #endif // _WX_OBJECTH__