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 #if WXWIN_COMPATIBILITY_2_4
  98     // Initializes parent pointers and hash table for fast searching.
  99     wxDEPRECATED( static void InitializeClasses() );
 100     // Cleans up hash table used for fast searching.
 101     wxDEPRECATED( static void CleanUpClasses() );
 102 #endif
 103
 104 public:
 105     const wxChar            *m_className;
 106     int                      m_objectSize;
 107     wxObjectConstructorFn    m_objectConstructor;
 108
 109         // Pointers to base wxClassInfos: set in InitializeClasses
 110
 111     const wxClassInfo       *m_baseInfo1;
 112     const wxClassInfo       *m_baseInfo2;
 113
 114         // class info object live in a linked list:
 115         // pointers to its head and the next element in it
 116
 117     static wxClassInfo      *sm_first;
 118     wxClassInfo             *m_next;
 119
 120     // FIXME: this should be private (currently used directly by way too
 121     //        many clients)
 122     static wxHashTable      *sm_classTable;
 123
 124 private:
 125     // InitializeClasses() helper
 126     static wxClassInfo *GetBaseByName(const wxChar *name);
 127
 128     DECLARE_NO_COPY_CLASS(wxClassInfo)
 129
 130 protected:
 131     // registers the class
 132     void Register();
 133     void Unregister();
 134 };
 135
 136 WXDLLIMPEXP_BASE wxObject *wxCreateDynamicObject(const wxChar *name);
 137
 138 #if WXWIN_COMPATIBILITY_2_4
 139 inline void wxClassInfo::InitializeClasses() {}
 140 inline void wxClassInfo::CleanUpClasses() {}
 141 #endif
 142
 143 // ----------------------------------------------------------------------------
 144 // Dynamic class macros
 145 // ----------------------------------------------------------------------------
 146
 147 #define DECLARE_ABSTRACT_CLASS(name)                                          \
 148     public:                                                                   \
 149         static wxClassInfo ms_classInfo;                                      \
 150         virtual wxClassInfo *GetClassInfo() const;
 151
 152 #define DECLARE_DYNAMIC_CLASS_NO_ASSIGN(name)                                 \
 153     DECLARE_NO_ASSIGN_CLASS(name)                                             \
 154     DECLARE_DYNAMIC_CLASS(name)
 155
 156 #define DECLARE_DYNAMIC_CLASS_NO_COPY(name)                                   \
 157     DECLARE_NO_COPY_CLASS(name)                                               \
 158     DECLARE_DYNAMIC_CLASS(name)
 159
 160 #define DECLARE_DYNAMIC_CLASS(name)                                           \
 161     DECLARE_ABSTRACT_CLASS(name)                                              \
 162     static wxObject* wxCreateObject();
 163
 164 #define DECLARE_CLASS(name) DECLARE_DYNAMIC_CLASS(name)
 165
 166
 167 // common part of the macros below
 168 #define wxIMPLEMENT_CLASS_COMMON(name, basename, baseclsinfo2, func)          \
 169     wxClassInfo name::ms_classInfo(wxT(#name),                                \
 170             &basename::ms_classInfo,                                          \
 171             baseclsinfo2,                                                     \
 172             (int) sizeof(name),                                               \
 173             (wxObjectConstructorFn) func);                                    \
 174                                                                               \
 175     wxClassInfo *name::GetClassInfo() const                                   \
 176         { return &name::ms_classInfo; }
 177
 178 #define wxIMPLEMENT_CLASS_COMMON1(name, basename, func)                       \
 179     wxIMPLEMENT_CLASS_COMMON(name, basename, NULL, func)
 180
 181 #define wxIMPLEMENT_CLASS_COMMON2(name, basename1, basename2, func)           \
 182     wxIMPLEMENT_CLASS_COMMON(name, basename1, &basename2::ms_classInfo, func)
 183
 184 // -----------------------------------
 185 // for concrete classes
 186 // -----------------------------------
 187
 188     // Single inheritance with one base class
 189 #define IMPLEMENT_DYNAMIC_CLASS(name, basename)                               \
 190     wxIMPLEMENT_CLASS_COMMON1(name, basename, name::wxCreateObject)           \
 191     wxObject* name::wxCreateObject()                                          \
 192         { return new name; }
 193
 194     // Multiple inheritance with two base classes
 195 #define IMPLEMENT_DYNAMIC_CLASS2(name, basename1, basename2)                  \
 196     wxIMPLEMENT_CLASS_COMMON2(name, basename1, basename2,                     \
 197                               name::wxCreateObject)                           \
 198     wxObject* name::wxCreateObject()                                          \
 199         { return new name; }
 200
 201 // -----------------------------------
 202 // for abstract classes
 203 // -----------------------------------
 204
 205     // Single inheritance with one base class
 206
 207 #define IMPLEMENT_ABSTRACT_CLASS(name, basename)                              \
 208     wxIMPLEMENT_CLASS_COMMON1(name, basename, NULL)
 209
 210     // Multiple inheritance with two base classes
 211
 212 #define IMPLEMENT_ABSTRACT_CLASS2(name, basename1, basename2)                 \
 213     wxIMPLEMENT_CLASS_COMMON2(name, basename1, basename2, NULL)
 214
 215 #define IMPLEMENT_CLASS IMPLEMENT_ABSTRACT_CLASS
 216 #define IMPLEMENT_CLASS2 IMPLEMENT_ABSTRACT_CLASS2
 217
 218 #endif // !wxUSE_EXTENDED_RTTI
 219
 220
 221 // -----------------------------------
 222 // for pluggable classes
 223 // -----------------------------------
 224
 225     // NOTE: this should probably be the very first statement
 226     //       in the class declaration so wxPluginSentinel is
 227     //       the first member initialised and the last destroyed.
 228
 229 // _DECLARE_DL_SENTINEL(name) wxPluginSentinel m_pluginsentinel;
 230
 231 #if wxUSE_NESTED_CLASSES
 232
 233 #define _DECLARE_DL_SENTINEL(name, exportdecl)  \
 234 class exportdecl name##PluginSentinel {         \
 235 private:                                        \
 236     static const wxString sm_className;         \
 237 public:                                         \
 238     name##PluginSentinel();                     \
 239     ~name##PluginSentinel();                    \
 240 };                                              \
 241 name##PluginSentinel  m_pluginsentinel;
 242
 243 #define _IMPLEMENT_DL_SENTINEL(name)                                \
 244  const wxString name::name##PluginSentinel::sm_className(#name);    \
 245  name::name##PluginSentinel::name##PluginSentinel() {               \
 246     wxPluginLibrary *e = (wxPluginLibrary*) wxPluginLibrary::ms_classes.Get(#name);   \
 247     if( e != 0 ) { e->RefObj(); }                                      \
 248  }                                                                  \
 249  name::name##PluginSentinel::~name##PluginSentinel() {            \
 250     wxPluginLibrary *e = (wxPluginLibrary*) wxPluginLibrary::ms_classes.Get(#name);   \
 251     if( e != 0 ) { e->UnrefObj(); }                                 \
 252  }
 253 #else
 254
 255 #define _DECLARE_DL_SENTINEL(name)
 256 #define _IMPLEMENT_DL_SENTINEL(name)
 257
 258 #endif  // wxUSE_NESTED_CLASSES
 259
 260 #define DECLARE_PLUGGABLE_CLASS(name) \
 261  DECLARE_DYNAMIC_CLASS(name) _DECLARE_DL_SENTINEL(name, WXDLLEXPORT)
 262 #define DECLARE_ABSTRACT_PLUGGABLE_CLASS(name)  \
 263  DECLARE_ABSTRACT_CLASS(name) _DECLARE_DL_SENTINEL(name, WXDLLEXPORT)
 264
 265 #define DECLARE_USER_EXPORTED_PLUGGABLE_CLASS(name, usergoo) \
 266  DECLARE_DYNAMIC_CLASS(name) _DECLARE_DL_SENTINEL(name, usergoo)
 267 #define DECLARE_USER_EXPORTED_ABSTRACT_PLUGGABLE_CLASS(name, usergoo)  \
 268  DECLARE_ABSTRACT_CLASS(name) _DECLARE_DL_SENTINEL(name, usergoo)
 269
 270 #define IMPLEMENT_PLUGGABLE_CLASS(name, basename) \
 271  IMPLEMENT_DYNAMIC_CLASS(name, basename) _IMPLEMENT_DL_SENTINEL(name)
 272 #define IMPLEMENT_PLUGGABLE_CLASS2(name, basename1, basename2)  \
 273  IMPLEMENT_DYNAMIC_CLASS2(name, basename1, basename2) _IMPLEMENT_DL_SENTINEL(name)
 274 #define IMPLEMENT_ABSTRACT_PLUGGABLE_CLASS(name, basename) \
 275  IMPLEMENT_ABSTRACT_CLASS(name, basename) _IMPLEMENT_DL_SENTINEL(name)
 276 #define IMPLEMENT_ABSTRACT_PLUGGABLE_CLASS2(name, basename1, basename2)  \
 277  IMPLEMENT_ABSTRACT_CLASS2(name, basename1, basename2) _IMPLEMENT_DL_SENTINEL(name)
 278
 279 #define IMPLEMENT_USER_EXPORTED_PLUGGABLE_CLASS(name, basename) \
 280  IMPLEMENT_PLUGGABLE_CLASS(name, basename)
 281 #define IMPLEMENT_USER_EXPORTED_PLUGGABLE_CLASS2(name, basename1, basename2)  \
 282  IMPLEMENT_PLUGGABLE_CLASS2(name, basename1, basename2)
 283 #define IMPLEMENT_USER_EXPORTED_ABSTRACT_PLUGGABLE_CLASS(name, basename) \
 284  IMPLEMENT_ABSTRACT_PLUGGABLE_CLASS(name, basename)
 285 #define IMPLEMENT_USER_EXPORTED_ABSTRACT_PLUGGABLE_CLASS2(name, basename1, basename2)  \
 286  IMPLEMENT_ABSTRACT_PLUGGABLE_CLASS2(name, basename1, basename2)
 287
 288 #define CLASSINFO(name) (&name::ms_classInfo)
 289
 290 #define wxIS_KIND_OF(obj, className) obj->IsKindOf(&className::ms_classInfo)
 291
 292 // Just seems a bit nicer-looking (pretend it's not a macro)
 293 #define wxIsKindOf(obj, className) obj->IsKindOf(&className::ms_classInfo)
 294
 295 // this cast does some more checks at compile time as it uses static_cast
 296 // internally
 297 //
 298 // note that it still has different semantics from dynamic_cast<> and so can't
 299 // be replaced by it as long as there are any compilers not supporting it
 300 #define wxDynamicCast(obj, className) \
 301     ((className *) wxCheckDynamicCast( \
 302         wx_const_cast(wxObject *, wx_static_cast(const wxObject *, \
 303           wx_const_cast(className *, wx_static_cast(const className *, obj)))), \
 304         &className::ms_classInfo))
 305
 306 // The 'this' pointer is always true, so use this version
 307 // to cast the this pointer and avoid compiler warnings.
 308 #define wxDynamicCastThis(className) \
 309      (IsKindOf(&className::ms_classInfo) ? (className *)(this) : (className *)0)
 310
 311 #ifdef __WXDEBUG__
 312 inline void* wxCheckCast(void *ptr)
 313 {
 314     wxASSERT_MSG( ptr, _T("wxStaticCast() used incorrectly") );
 315     return ptr;
 316 }
 317 #define wxStaticCast(obj, className) \
 318  ((className *)wxCheckCast(wxDynamicCast(obj, className)))
 319
 320 #else  // !__WXDEBUG__
 321 #define wxStaticCast(obj, className) \
 322     wx_const_cast(className *, wx_static_cast(const className *, obj))
 323
 324 #endif  // __WXDEBUG__
 325
 326 // ----------------------------------------------------------------------------
 327 // set up memory debugging macros
 328 // ----------------------------------------------------------------------------
 329
 330 /*
 331     Which new/delete operator variants do we want?
 332
 333     _WX_WANT_NEW_SIZET_WXCHAR_INT             = void *operator new (size_t size, wxChar *fileName = 0, int lineNum = 0)
 334     _WX_WANT_DELETE_VOID                      = void operator delete (void * buf)
 335     _WX_WANT_DELETE_VOID_CONSTCHAR_SIZET      = void operator delete (void *buf, const char *_fname, size_t _line)
 336     _WX_WANT_DELETE_VOID_WXCHAR_INT           = void operator delete(void *buf, wxChar*, int)
 337     _WX_WANT_ARRAY_NEW_SIZET_WXCHAR_INT       = void *operator new[] (size_t size, wxChar *fileName , int lineNum = 0)
 338     _WX_WANT_ARRAY_DELETE_VOID                = void operator delete[] (void *buf)
 339     _WX_WANT_ARRAY_DELETE_VOID_WXCHAR_INT     = void operator delete[] (void* buf, wxChar*, int )
 340 */
 341
 342 #if defined(__WXDEBUG__) && wxUSE_MEMORY_TRACING
 343
 344 // All compilers get this one
 345 #define _WX_WANT_NEW_SIZET_WXCHAR_INT
 346
 347 // Everyone except Visage gets the next one
 348 #ifndef __VISAGECPP__
 349     #define _WX_WANT_DELETE_VOID
 350 #endif
 351
 352 // Only visage gets this one under the correct circumstances
 353 #if defined(__VISAGECPP__) && __DEBUG_ALLOC__
 354     #define _WX_WANT_DELETE_VOID_CONSTCHAR_SIZET
 355 #endif
 356
 357 // Only VC++ 6 and CodeWarrior get overloaded delete that matches new
 358 #if (defined(__VISUALC__) && (__VISUALC__ >= 1200)) || \
 359         (defined(__MWERKS__) && (__MWERKS__ >= 0x2400))
 360     #define _WX_WANT_DELETE_VOID_WXCHAR_INT
 361 #endif
 362
 363 // Now see who (if anyone) gets the array memory operators
 364 #if wxUSE_ARRAY_MEMORY_OPERATORS
 365
 366     // Everyone except Visual C++ (cause problems for VC++ - crashes)
 367     #if !defined(__VISUALC__)
 368         #define _WX_WANT_ARRAY_NEW_SIZET_WXCHAR_INT
 369     #endif
 370
 371     // Everyone except Visual C++ (cause problems for VC++ - crashes)
 372     #if !defined(__VISUALC__)
 373         #define _WX_WANT_ARRAY_DELETE_VOID
 374     #endif
 375
 376     // Only CodeWarrior 6 or higher
 377     #if defined(__MWERKS__) && (__MWERKS__ >= 0x2400)
 378         #define _WX_WANT_ARRAY_DELETE_VOID_WXCHAR_INT
 379     #endif
 380
 381 #endif // wxUSE_ARRAY_MEMORY_OPERATORS
 382
 383 #endif // __WXDEBUG__ && wxUSE_MEMORY_TRACING
 384
 385 // ----------------------------------------------------------------------------
 386 // wxObjectRefData: ref counted data meant to be stored in wxObject
 387 // ----------------------------------------------------------------------------
 388
 389 class WXDLLIMPEXP_BASE wxObjectRefData
 390 {
 391     friend class WXDLLIMPEXP_BASE wxObject;
 392
 393 public:
 394     wxObjectRefData() : m_count(1) { }
 395
 396     int GetRefCount() const { return m_count; }
 397
 398     void IncRef() { m_count++; }
 399     void DecRef();
 400
 401 protected:
 402     // this object should never be destroyed directly but only as a
 403     // result of a DecRef() call:
 404     virtual ~wxObjectRefData() { }
 405
 406 private:
 407     // our refcount:
 408     int m_count;
 409 };
 410
 411 // ----------------------------------------------------------------------------
 412 // wxObjectDataPtr: helper class to avoid memleaks because of missing calls
 413 //                  to wxObjectRefData::DecRef
 414 // ----------------------------------------------------------------------------
 415
 416 template <class T>
 417 class wxObjectDataPtr
 418 {
 419 public:
 420     typedef T element_type;
 421
 422     wxEXPLICIT wxObjectDataPtr(T *ptr = NULL) : m_ptr(ptr) {}
 423
 424     // copy ctor
 425     wxObjectDataPtr(const wxObjectDataPtr<T> &tocopy)
 426         : m_ptr(tocopy.m_ptr)
 427     {
 428         if (m_ptr)
 429             m_ptr->IncRef();
 430     }
 431
 432     ~wxObjectDataPtr()
 433     {
 434         if (m_ptr)
 435             m_ptr->DecRef();
 436     }
 437
 438     T *get() const { return m_ptr; }
 439     T *operator->() const { return get(); }
 440
 441     void reset(T *ptr)
 442     {
 443         if (m_ptr)
 444             m_ptr->DecRef();
 445         m_ptr = ptr;
 446     }
 447
 448     wxObjectDataPtr& operator=(const wxObjectDataPtr &tocopy)
 449     {
 450         if (m_ptr)
 451             m_ptr->DecRef();
 452         m_ptr = tocopy.m_ptr;
 453         if (m_ptr)
 454             m_ptr->IncRef();
 455         return *this;
 456     }
 457
 458     wxObjectDataPtr& operator=(T *ptr)
 459     {
 460         if (m_ptr)
 461             m_ptr->DecRef();
 462         m_ptr = ptr;
 463         if (m_ptr)
 464             m_ptr->IncRef();
 465         return *this;
 466     }
 467
 468 private:
 469     T *m_ptr;
 470 };
 471
 472 // ----------------------------------------------------------------------------
 473 // wxObject: the root class of wxWidgets object hierarchy
 474 // ----------------------------------------------------------------------------
 475
 476 class WXDLLIMPEXP_BASE wxObject
 477 {
 478     DECLARE_ABSTRACT_CLASS(wxObject)
 479
 480 public:
 481     wxObject() { m_refData = NULL; }
 482     virtual ~wxObject() { UnRef(); }
 483
 484     wxObject(const wxObject& other)
 485     {
 486          m_refData = other.m_refData;
 487          if (m_refData)
 488              m_refData->m_count++;
 489     }
 490
 491     wxObject& operator=(const wxObject& other)
 492     {
 493         if ( this != &other )
 494         {
 495             Ref(other);
 496         }
 497         return *this;
 498     }
 499
 500     bool IsKindOf(wxClassInfo *info) const;
 501
 502
 503     // Turn on the correct set of new and delete operators
 504
 505 #ifdef _WX_WANT_NEW_SIZET_WXCHAR_INT
 506     void *operator new ( size_t size, const wxChar *fileName = NULL, int lineNum = 0 );
 507 #endif
 508
 509 #ifdef _WX_WANT_DELETE_VOID
 510     void operator delete ( void * buf );
 511 #endif
 512
 513 #ifdef _WX_WANT_DELETE_VOID_CONSTCHAR_SIZET
 514     void operator delete ( void *buf, const char *_fname, size_t _line );
 515 #endif
 516
 517 #ifdef _WX_WANT_DELETE_VOID_WXCHAR_INT
 518     void operator delete ( void *buf, const wxChar*, int );
 519 #endif
 520
 521 #ifdef _WX_WANT_ARRAY_NEW_SIZET_WXCHAR_INT
 522     void *operator new[] ( size_t size, const wxChar *fileName = NULL, int lineNum = 0 );
 523 #endif
 524
 525 #ifdef _WX_WANT_ARRAY_DELETE_VOID
 526     void operator delete[] ( void *buf );
 527 #endif
 528
 529 #ifdef _WX_WANT_ARRAY_DELETE_VOID_WXCHAR_INT
 530     void operator delete[] (void* buf, const wxChar*, int );
 531 #endif
 532
 533     // ref counted data handling methods
 534
 535     // get/set
 536     wxObjectRefData *GetRefData() const { return m_refData; }
 537     void SetRefData(wxObjectRefData *data) { m_refData = data; }
 538
 539     // make a 'clone' of the object
 540     void Ref(const wxObject& clone);
 541
 542     // destroy a reference
 543     void UnRef();
 544
 545     // Make sure this object has only one reference
 546     void UnShare() { AllocExclusive(); }
 547
 548     // check if this object references the same data as the other one
 549     bool IsSameAs(const wxObject& o) const { return m_refData == o.m_refData; }
 550
 551 protected:
 552     // ensure that our data is not shared with anybody else: if we have no
 553     // data, it is created using CreateRefData() below, if we have shared data
 554     // it is copied using CloneRefData(), otherwise nothing is done
 555     void AllocExclusive();
 556
 557     // both methods must be implemented if AllocExclusive() is used, not pure
 558     // virtual only because of the backwards compatibility reasons
 559
 560     // create a new m_refData
 561     virtual wxObjectRefData *CreateRefData() const;
 562
 563     // create a new m_refData initialized with the given one
 564     virtual wxObjectRefData *CloneRefData(const wxObjectRefData *data) const;
 565
 566     wxObjectRefData *m_refData;
 567 };
 568
 569 inline wxObject *wxCheckDynamicCast(wxObject *obj, wxClassInfo *classInfo)
 570 {
 571     return obj && obj->GetClassInfo()->IsKindOf(classInfo) ? obj : NULL;
 572 }
 573
 574 #if wxUSE_EXTENDED_RTTI
 575 class WXDLLIMPEXP_BASE wxDynamicObject : public wxObject
 576 {
 577     friend class WXDLLIMPEXP_BASE wxDynamicClassInfo ;
 578 public:
 579     // instantiates this object with an instance of its superclass
 580     wxDynamicObject(wxObject* superClassInstance, const wxDynamicClassInfo *info) ;
 581     virtual ~wxDynamicObject();
 582
 583     void SetProperty (const wxChar *propertyName, const wxxVariant &value);
 584     wxxVariant GetProperty (const wxChar *propertyName) const ;
 585
 586     // get the runtime identity of this object
 587     wxClassInfo *GetClassInfo() const
 588     {
 589 #ifdef _MSC_VER
 590         return (wxClassInfo*) m_classInfo;
 591 #else
 592         wxDynamicClassInfo *nonconst = wx_const_cast(wxDynamicClassInfo *, m_classInfo);
 593         return wx_static_cast(wxClassInfo *, nonconst);
 594 #endif
 595     }
 596
 597     wxObject* GetSuperClassInstance() const
 598     {
 599         return m_superClassInstance ;
 600     }
 601 private :
 602     // removes an existing runtime-property
 603     void RemoveProperty( const wxChar *propertyName ) ;
 604
 605     // renames an existing runtime-property
 606     void RenameProperty( const wxChar *oldPropertyName , const wxChar *newPropertyName ) ;
 607
 608     wxObject *m_superClassInstance ;
 609     const wxDynamicClassInfo *m_classInfo;
 610     struct wxDynamicObjectInternal;
 611     wxDynamicObjectInternal *m_data;
 612 };
 613 #endif
 614
 615 // ----------------------------------------------------------------------------
 616 // more debugging macros
 617 // ----------------------------------------------------------------------------
 618
 619 // Redefine new to be the debugging version. This doesn't work with all
 620 // compilers, in which case you need to use WXDEBUG_NEW explicitly if you wish
 621 // to use the debugging version.
 622
 623 #ifdef __WXDEBUG__
 624     #define WXDEBUG_NEW new(__TFILE__,__LINE__)
 625
 626     #if wxUSE_DEBUG_NEW_ALWAYS
 627         #if wxUSE_GLOBAL_MEMORY_OPERATORS
 628             #define new WXDEBUG_NEW
 629         #elif defined(__VISUALC__)
 630             // Including this file redefines new and allows leak reports to
 631             // contain line numbers
 632             #include "wx/msw/msvcrt.h"
 633         #endif
 634     #endif // wxUSE_DEBUG_NEW_ALWAYS
 635 #else // !__WXDEBUG__
 636     #define WXDEBUG_NEW new
 637 #endif // __WXDEBUG__/!__WXDEBUG__
 638
 639 #endif // _WX_OBJECTH__