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_FWD_BASE wxObject;
  23 class WXDLLIMPEXP_FWD_BASE wxString;
  24
  25 #ifndef wxUSE_EXTENDED_RTTI
  26 #define wxUSE_EXTENDED_RTTI 0
  27 #endif
  28
  29 #define DECLARE_CLASS_INFO_ITERATORS()                                       \
  30     class WXDLLIMPEXP_BASE const_iterator                                    \
  31     {                                                                        \
  32         typedef wxHashTable_Node Node;                                       \
  33     public:                                                                  \
  34         typedef const wxClassInfo* value_type;                               \
  35         typedef const value_type& const_reference;                           \
  36         typedef const_iterator itor;                                         \
  37         typedef value_type* ptr_type;                                        \
  38                                                                              \
  39         Node* m_node;                                                        \
  40         wxHashTable* m_table;                                                \
  41     public:                                                                  \
  42         typedef const_reference reference_type;                              \
  43         typedef ptr_type pointer_type;                                       \
  44                                                                              \
  45         const_iterator(Node* node, wxHashTable* table)                       \
  46             : m_node(node), m_table(table) { }                               \
  47         const_iterator() : m_node(NULL), m_table(NULL) { }                   \
  48         value_type operator*() const;                                        \
  49         itor& operator++();                                                  \
  50         const itor operator++(int);                                          \
  51         bool operator!=(const itor& it) const                                \
  52             { return it.m_node != m_node; }                                  \
  53         bool operator==(const itor& it) const                                \
  54             { return it.m_node == m_node; }                                  \
  55     };                                                                       \
  56                                                                              \
  57     static const_iterator begin_classinfo();                                 \
  58     static const_iterator end_classinfo();
  59
  60 #if wxUSE_EXTENDED_RTTI
  61 #include "wx/xti.h"
  62 #else
  63
  64 // ----------------------------------------------------------------------------
  65 // conditional compilation
  66 // ----------------------------------------------------------------------------
  67
  68 class WXDLLIMPEXP_FWD_BASE wxClassInfo;
  69 class WXDLLIMPEXP_FWD_BASE wxHashTable;
  70 class WXDLLIMPEXP_FWD_BASE wxObject;
  71 class WXDLLIMPEXP_FWD_BASE wxPluginLibrary;
  72 class WXDLLIMPEXP_FWD_BASE wxObjectRefData;
  73 class WXDLLIMPEXP_FWD_BASE wxHashTable_Node;
  74
  75 // ----------------------------------------------------------------------------
  76 // wxClassInfo
  77 // ----------------------------------------------------------------------------
  78
  79 typedef wxObject *(*wxObjectConstructorFn)(void);
  80
  81 class WXDLLIMPEXP_BASE wxClassInfo
  82 {
  83     friend class WXDLLIMPEXP_FWD_BASE wxObject;
  84     friend WXDLLIMPEXP_BASE wxObject *wxCreateDynamicObject(const wxString& name);
  85 public:
  86     wxClassInfo( const wxChar *className,
  87                  const wxClassInfo *baseInfo1,
  88                  const wxClassInfo *baseInfo2,
  89                  int size,
  90                  wxObjectConstructorFn ctor )
  91         : m_className(className)
  92         , m_objectSize(size)
  93         , m_objectConstructor(ctor)
  94         , m_baseInfo1(baseInfo1)
  95         , m_baseInfo2(baseInfo2)
  96         , m_next(sm_first)
  97         {
  98             sm_first = this;
  99             Register();
 100         }
 101
 102     ~wxClassInfo();
 103
 104     wxObject *CreateObject() const
 105         { return m_objectConstructor ? (*m_objectConstructor)() : 0; }
 106     bool IsDynamic() const { return (NULL != m_objectConstructor); }
 107
 108     const wxChar       *GetClassName() const { return m_className; }
 109     const wxChar       *GetBaseClassName1() const
 110         { return m_baseInfo1 ? m_baseInfo1->GetClassName() : NULL; }
 111     const wxChar       *GetBaseClassName2() const
 112         { return m_baseInfo2 ? m_baseInfo2->GetClassName() : NULL; }
 113     const wxClassInfo  *GetBaseClass1() const { return m_baseInfo1; }
 114     const wxClassInfo  *GetBaseClass2() const { return m_baseInfo2; }
 115     int                 GetSize() const { return m_objectSize; }
 116
 117     wxObjectConstructorFn      GetConstructor() const
 118         { return m_objectConstructor; }
 119     static const wxClassInfo  *GetFirst() { return sm_first; }
 120     const wxClassInfo         *GetNext() const { return m_next; }
 121     static wxClassInfo        *FindClass(const wxString& className);
 122
 123         // Climb upwards through inheritance hierarchy.
 124         // Dual inheritance is catered for.
 125
 126     bool IsKindOf(const wxClassInfo *info) const
 127     {
 128         return info != 0 &&
 129                ( info == this ||
 130                  ( m_baseInfo1 && m_baseInfo1->IsKindOf(info) ) ||
 131                  ( m_baseInfo2 && m_baseInfo2->IsKindOf(info) ) );
 132     }
 133
 134     DECLARE_CLASS_INFO_ITERATORS()
 135 private:
 136     const wxChar            *m_className;
 137     int                      m_objectSize;
 138     wxObjectConstructorFn    m_objectConstructor;
 139
 140         // Pointers to base wxClassInfos
 141
 142     const wxClassInfo       *m_baseInfo1;
 143     const wxClassInfo       *m_baseInfo2;
 144
 145         // class info object live in a linked list:
 146         // pointers to its head and the next element in it
 147
 148     static wxClassInfo      *sm_first;
 149     wxClassInfo             *m_next;
 150
 151     static wxHashTable      *sm_classTable;
 152
 153 protected:
 154     // registers the class
 155     void Register();
 156     void Unregister();
 157
 158     wxDECLARE_NO_COPY_CLASS(wxClassInfo);
 159 };
 160
 161 WXDLLIMPEXP_BASE wxObject *wxCreateDynamicObject(const wxString& name);
 162
 163 // ----------------------------------------------------------------------------
 164 // Dynamic class macros
 165 // ----------------------------------------------------------------------------
 166
 167 #define DECLARE_ABSTRACT_CLASS(name)                                          \
 168     public:                                                                   \
 169         static wxClassInfo ms_classInfo;                                      \
 170         virtual wxClassInfo *GetClassInfo() const;
 171
 172 #define DECLARE_DYNAMIC_CLASS_NO_ASSIGN(name)                                 \
 173     DECLARE_NO_ASSIGN_CLASS(name)                                             \
 174     DECLARE_DYNAMIC_CLASS(name)
 175
 176 #define DECLARE_DYNAMIC_CLASS_NO_COPY(name)                                   \
 177     DECLARE_NO_COPY_CLASS(name)                                               \
 178     DECLARE_DYNAMIC_CLASS(name)
 179
 180 #define DECLARE_DYNAMIC_CLASS(name)                                           \
 181     DECLARE_ABSTRACT_CLASS(name)                                              \
 182     static wxObject* wxCreateObject();
 183
 184 #define DECLARE_CLASS(name) DECLARE_DYNAMIC_CLASS(name)
 185
 186
 187 // common part of the macros below
 188 #define wxIMPLEMENT_CLASS_COMMON(name, basename, baseclsinfo2, func)          \
 189     wxClassInfo name::ms_classInfo(wxT(#name),                                \
 190             &basename::ms_classInfo,                                          \
 191             baseclsinfo2,                                                     \
 192             (int) sizeof(name),                                               \
 193             func);                                                            \
 194                                                                               \
 195     wxClassInfo *name::GetClassInfo() const                                   \
 196         { return &name::ms_classInfo; }
 197
 198 #define wxIMPLEMENT_CLASS_COMMON1(name, basename, func)                       \
 199     wxIMPLEMENT_CLASS_COMMON(name, basename, NULL, func)
 200
 201 #define wxIMPLEMENT_CLASS_COMMON2(name, basename1, basename2, func)           \
 202     wxIMPLEMENT_CLASS_COMMON(name, basename1, &basename2::ms_classInfo, func)
 203
 204 // -----------------------------------
 205 // for concrete classes
 206 // -----------------------------------
 207
 208     // Single inheritance with one base class
 209 #define IMPLEMENT_DYNAMIC_CLASS(name, basename)                               \
 210     wxIMPLEMENT_CLASS_COMMON1(name, basename, name::wxCreateObject)           \
 211     wxObject* name::wxCreateObject()                                          \
 212         { return new name; }
 213
 214     // Multiple inheritance with two base classes
 215 #define IMPLEMENT_DYNAMIC_CLASS2(name, basename1, basename2)                  \
 216     wxIMPLEMENT_CLASS_COMMON2(name, basename1, basename2,                     \
 217                               name::wxCreateObject)                           \
 218     wxObject* name::wxCreateObject()                                          \
 219         { return new name; }
 220
 221 // -----------------------------------
 222 // for abstract classes
 223 // -----------------------------------
 224
 225     // Single inheritance with one base class
 226
 227 #define IMPLEMENT_ABSTRACT_CLASS(name, basename)                              \
 228     wxIMPLEMENT_CLASS_COMMON1(name, basename, NULL)
 229
 230     // Multiple inheritance with two base classes
 231
 232 #define IMPLEMENT_ABSTRACT_CLASS2(name, basename1, basename2)                 \
 233     wxIMPLEMENT_CLASS_COMMON2(name, basename1, basename2, NULL)
 234
 235 #define IMPLEMENT_CLASS IMPLEMENT_ABSTRACT_CLASS
 236 #define IMPLEMENT_CLASS2 IMPLEMENT_ABSTRACT_CLASS2
 237
 238 #endif // !wxUSE_EXTENDED_RTTI
 239
 240
 241 // -----------------------------------
 242 // for pluggable classes
 243 // -----------------------------------
 244
 245     // NOTE: this should probably be the very first statement
 246     //       in the class declaration so wxPluginSentinel is
 247     //       the first member initialised and the last destroyed.
 248
 249 // _DECLARE_DL_SENTINEL(name) wxPluginSentinel m_pluginsentinel;
 250
 251 #if wxUSE_NESTED_CLASSES
 252
 253 #define _DECLARE_DL_SENTINEL(name, exportdecl)  \
 254 class exportdecl name##PluginSentinel {         \
 255 private:                                        \
 256     static const wxString sm_className;         \
 257 public:                                         \
 258     name##PluginSentinel();                     \
 259     ~name##PluginSentinel();                    \
 260 };                                              \
 261 name##PluginSentinel  m_pluginsentinel;
 262
 263 #define _IMPLEMENT_DL_SENTINEL(name)                                \
 264  const wxString name::name##PluginSentinel::sm_className(#name);    \
 265  name::name##PluginSentinel::name##PluginSentinel() {               \
 266     wxPluginLibrary *e = (wxPluginLibrary*) wxPluginLibrary::ms_classes.Get(#name);   \
 267     if( e != 0 ) { e->RefObj(); }                                      \
 268  }                                                                  \
 269  name::name##PluginSentinel::~name##PluginSentinel() {            \
 270     wxPluginLibrary *e = (wxPluginLibrary*) wxPluginLibrary::ms_classes.Get(#name);   \
 271     if( e != 0 ) { e->UnrefObj(); }                                 \
 272  }
 273 #else
 274
 275 #define _DECLARE_DL_SENTINEL(name)
 276 #define _IMPLEMENT_DL_SENTINEL(name)
 277
 278 #endif  // wxUSE_NESTED_CLASSES
 279
 280 #define DECLARE_PLUGGABLE_CLASS(name) \
 281  DECLARE_DYNAMIC_CLASS(name) _DECLARE_DL_SENTINEL(name, WXDLLIMPEXP_CORE)
 282 #define DECLARE_ABSTRACT_PLUGGABLE_CLASS(name)  \
 283  DECLARE_ABSTRACT_CLASS(name) _DECLARE_DL_SENTINEL(name, WXDLLIMPEXP_CORE)
 284
 285 #define DECLARE_USER_EXPORTED_PLUGGABLE_CLASS(name, usergoo) \
 286  DECLARE_DYNAMIC_CLASS(name) _DECLARE_DL_SENTINEL(name, usergoo)
 287 #define DECLARE_USER_EXPORTED_ABSTRACT_PLUGGABLE_CLASS(name, usergoo)  \
 288  DECLARE_ABSTRACT_CLASS(name) _DECLARE_DL_SENTINEL(name, usergoo)
 289
 290 #define IMPLEMENT_PLUGGABLE_CLASS(name, basename) \
 291  IMPLEMENT_DYNAMIC_CLASS(name, basename) _IMPLEMENT_DL_SENTINEL(name)
 292 #define IMPLEMENT_PLUGGABLE_CLASS2(name, basename1, basename2)  \
 293  IMPLEMENT_DYNAMIC_CLASS2(name, basename1, basename2) _IMPLEMENT_DL_SENTINEL(name)
 294 #define IMPLEMENT_ABSTRACT_PLUGGABLE_CLASS(name, basename) \
 295  IMPLEMENT_ABSTRACT_CLASS(name, basename) _IMPLEMENT_DL_SENTINEL(name)
 296 #define IMPLEMENT_ABSTRACT_PLUGGABLE_CLASS2(name, basename1, basename2)  \
 297  IMPLEMENT_ABSTRACT_CLASS2(name, basename1, basename2) _IMPLEMENT_DL_SENTINEL(name)
 298
 299 #define IMPLEMENT_USER_EXPORTED_PLUGGABLE_CLASS(name, basename) \
 300  IMPLEMENT_PLUGGABLE_CLASS(name, basename)
 301 #define IMPLEMENT_USER_EXPORTED_PLUGGABLE_CLASS2(name, basename1, basename2)  \
 302  IMPLEMENT_PLUGGABLE_CLASS2(name, basename1, basename2)
 303 #define IMPLEMENT_USER_EXPORTED_ABSTRACT_PLUGGABLE_CLASS(name, basename) \
 304  IMPLEMENT_ABSTRACT_PLUGGABLE_CLASS(name, basename)
 305 #define IMPLEMENT_USER_EXPORTED_ABSTRACT_PLUGGABLE_CLASS2(name, basename1, basename2)  \
 306  IMPLEMENT_ABSTRACT_PLUGGABLE_CLASS2(name, basename1, basename2)
 307
 308 #define CLASSINFO(name) (&name::ms_classInfo)
 309
 310 #define wxIS_KIND_OF(obj, className) obj->IsKindOf(&className::ms_classInfo)
 311
 312 // Just seems a bit nicer-looking (pretend it's not a macro)
 313 #define wxIsKindOf(obj, className) obj->IsKindOf(&className::ms_classInfo)
 314
 315 // this cast does some more checks at compile time as it uses static_cast
 316 // internally
 317 //
 318 // note that it still has different semantics from dynamic_cast<> and so can't
 319 // be replaced by it as long as there are any compilers not supporting it
 320 #define wxDynamicCast(obj, className) \
 321     ((className *) wxCheckDynamicCast( \
 322         const_cast<wxObject *>(static_cast<const wxObject *>(\
 323           const_cast<className *>(static_cast<const className *>(obj)))), \
 324         &className::ms_classInfo))
 325
 326 // The 'this' pointer is always true, so use this version
 327 // to cast the this pointer and avoid compiler warnings.
 328 #define wxDynamicCastThis(className) \
 329      (IsKindOf(&className::ms_classInfo) ? (className *)(this) : (className *)0)
 330
 331 // FIXME-VC6: dummy argument needed because VC6 doesn't support explicitly
 332 //            choosing the template function to call
 333 template <class T>
 334 inline T *wxCheckCast(const void *ptr, T * = NULL)
 335 {
 336     wxASSERT_MSG( wxDynamicCast(ptr, T), "wxStaticCast() used incorrectly" );
 337     return const_cast<T *>(static_cast<const T *>(ptr));
 338 }
 339
 340 #define wxStaticCast(obj, className) wxCheckCast((obj), (className *)NULL)
 341
 342 // ----------------------------------------------------------------------------
 343 // set up memory debugging macros
 344 // ----------------------------------------------------------------------------
 345
 346 /*
 347     Which new/delete operator variants do we want?
 348
 349     _WX_WANT_NEW_SIZET_WXCHAR_INT             = void *operator new (size_t size, wxChar *fileName = 0, int lineNum = 0)
 350     _WX_WANT_DELETE_VOID                      = void operator delete (void * buf)
 351     _WX_WANT_DELETE_VOID_CONSTCHAR_SIZET      = void operator delete (void *buf, const char *_fname, size_t _line)
 352     _WX_WANT_DELETE_VOID_WXCHAR_INT           = void operator delete(void *buf, wxChar*, int)
 353     _WX_WANT_ARRAY_NEW_SIZET_WXCHAR_INT       = void *operator new[] (size_t size, wxChar *fileName , int lineNum = 0)
 354     _WX_WANT_ARRAY_DELETE_VOID                = void operator delete[] (void *buf)
 355     _WX_WANT_ARRAY_DELETE_VOID_WXCHAR_INT     = void operator delete[] (void* buf, wxChar*, int )
 356 */
 357
 358 #if wxUSE_MEMORY_TRACING
 359
 360 // All compilers get this one
 361 #define _WX_WANT_NEW_SIZET_WXCHAR_INT
 362
 363 // Everyone except Visage gets the next one
 364 #ifndef __VISAGECPP__
 365     #define _WX_WANT_DELETE_VOID
 366 #endif
 367
 368 // Only visage gets this one under the correct circumstances
 369 #if defined(__VISAGECPP__) && __DEBUG_ALLOC__
 370     #define _WX_WANT_DELETE_VOID_CONSTCHAR_SIZET
 371 #endif
 372
 373 // Only VC++ 6 and CodeWarrior get overloaded delete that matches new
 374 #if (defined(__VISUALC__) && (__VISUALC__ >= 1200)) || \
 375         (defined(__MWERKS__) && (__MWERKS__ >= 0x2400))
 376     #define _WX_WANT_DELETE_VOID_WXCHAR_INT
 377 #endif
 378
 379 // Now see who (if anyone) gets the array memory operators
 380 #if wxUSE_ARRAY_MEMORY_OPERATORS
 381
 382     // Everyone except Visual C++ (cause problems for VC++ - crashes)
 383     #if !defined(__VISUALC__)
 384         #define _WX_WANT_ARRAY_NEW_SIZET_WXCHAR_INT
 385     #endif
 386
 387     // Everyone except Visual C++ (cause problems for VC++ - crashes)
 388     #if !defined(__VISUALC__)
 389         #define _WX_WANT_ARRAY_DELETE_VOID
 390     #endif
 391
 392     // Only CodeWarrior 6 or higher
 393     #if defined(__MWERKS__) && (__MWERKS__ >= 0x2400)
 394         #define _WX_WANT_ARRAY_DELETE_VOID_WXCHAR_INT
 395     #endif
 396
 397 #endif // wxUSE_ARRAY_MEMORY_OPERATORS
 398
 399 #endif // wxUSE_MEMORY_TRACING
 400
 401 // ----------------------------------------------------------------------------
 402 // wxObjectRefData: ref counted data meant to be stored in wxObject
 403 // ----------------------------------------------------------------------------
 404
 405 class WXDLLIMPEXP_BASE wxObjectRefData
 406 {
 407     friend class WXDLLIMPEXP_FWD_BASE wxObject;
 408
 409 public:
 410     wxObjectRefData() : m_count(1) { }
 411
 412     int GetRefCount() const { return m_count; }
 413
 414     void IncRef() { m_count++; }
 415     void DecRef();
 416
 417 protected:
 418     // this object should never be destroyed directly but only as a
 419     // result of a DecRef() call:
 420     virtual ~wxObjectRefData() { }
 421
 422 private:
 423     // our refcount:
 424     int m_count;
 425 };
 426
 427 // ----------------------------------------------------------------------------
 428 // wxObjectDataPtr: helper class to avoid memleaks because of missing calls
 429 //                  to wxObjectRefData::DecRef
 430 // ----------------------------------------------------------------------------
 431
 432 template <class T>
 433 class wxObjectDataPtr
 434 {
 435 public:
 436     typedef T element_type;
 437
 438     wxEXPLICIT wxObjectDataPtr(T *ptr = NULL) : m_ptr(ptr) {}
 439
 440     // copy ctor
 441     wxObjectDataPtr(const wxObjectDataPtr<T> &tocopy)
 442         : m_ptr(tocopy.m_ptr)
 443     {
 444         if (m_ptr)
 445             m_ptr->IncRef();
 446     }
 447
 448     ~wxObjectDataPtr()
 449     {
 450         if (m_ptr)
 451             m_ptr->DecRef();
 452     }
 453
 454     T *get() const { return m_ptr; }
 455
 456     // test for pointer validity: defining conversion to unspecified_bool_type
 457     // and not more obvious bool to avoid implicit conversions to integer types
 458     typedef T *(wxObjectDataPtr<T>::*unspecified_bool_type)() const;
 459     operator unspecified_bool_type() const
 460     {
 461         return m_ptr ? &wxObjectDataPtr<T>::get : NULL;
 462     }
 463
 464     T& operator*() const
 465     {
 466         wxASSERT(m_ptr != NULL);
 467         return *(m_ptr);
 468     }
 469
 470     T *operator->() const
 471     {
 472         wxASSERT(m_ptr != NULL);
 473         return get();
 474     }
 475
 476     void reset(T *ptr)
 477     {
 478         if (m_ptr)
 479             m_ptr->DecRef();
 480         m_ptr = ptr;
 481     }
 482
 483     wxObjectDataPtr& operator=(const wxObjectDataPtr &tocopy)
 484     {
 485         if (m_ptr)
 486             m_ptr->DecRef();
 487         m_ptr = tocopy.m_ptr;
 488         if (m_ptr)
 489             m_ptr->IncRef();
 490         return *this;
 491     }
 492
 493     wxObjectDataPtr& operator=(T *ptr)
 494     {
 495         if (m_ptr)
 496             m_ptr->DecRef();
 497         m_ptr = ptr;
 498         return *this;
 499     }
 500
 501 private:
 502     T *m_ptr;
 503 };
 504
 505 // ----------------------------------------------------------------------------
 506 // wxObject: the root class of wxWidgets object hierarchy
 507 // ----------------------------------------------------------------------------
 508
 509 class WXDLLIMPEXP_BASE wxObject
 510 {
 511     DECLARE_ABSTRACT_CLASS(wxObject)
 512
 513 public:
 514     wxObject() { m_refData = NULL; }
 515     virtual ~wxObject() { UnRef(); }
 516
 517     wxObject(const wxObject& other)
 518     {
 519          m_refData = other.m_refData;
 520          if (m_refData)
 521              m_refData->m_count++;
 522     }
 523
 524     wxObject& operator=(const wxObject& other)
 525     {
 526         if ( this != &other )
 527         {
 528             Ref(other);
 529         }
 530         return *this;
 531     }
 532
 533     bool IsKindOf(const wxClassInfo *info) const;
 534
 535
 536     // Turn on the correct set of new and delete operators
 537
 538 #ifdef _WX_WANT_NEW_SIZET_WXCHAR_INT
 539     void *operator new ( size_t size, const wxChar *fileName = NULL, int lineNum = 0 );
 540 #endif
 541
 542 #ifdef _WX_WANT_DELETE_VOID
 543     void operator delete ( void * buf );
 544 #endif
 545
 546 #ifdef _WX_WANT_DELETE_VOID_CONSTCHAR_SIZET
 547     void operator delete ( void *buf, const char *_fname, size_t _line );
 548 #endif
 549
 550 #ifdef _WX_WANT_DELETE_VOID_WXCHAR_INT
 551     void operator delete ( void *buf, const wxChar*, int );
 552 #endif
 553
 554 #ifdef _WX_WANT_ARRAY_NEW_SIZET_WXCHAR_INT
 555     void *operator new[] ( size_t size, const wxChar *fileName = NULL, int lineNum = 0 );
 556 #endif
 557
 558 #ifdef _WX_WANT_ARRAY_DELETE_VOID
 559     void operator delete[] ( void *buf );
 560 #endif
 561
 562 #ifdef _WX_WANT_ARRAY_DELETE_VOID_WXCHAR_INT
 563     void operator delete[] (void* buf, const wxChar*, int );
 564 #endif
 565
 566     // ref counted data handling methods
 567
 568     // get/set
 569     wxObjectRefData *GetRefData() const { return m_refData; }
 570     void SetRefData(wxObjectRefData *data) { m_refData = data; }
 571
 572     // make a 'clone' of the object
 573     void Ref(const wxObject& clone);
 574
 575     // destroy a reference
 576     void UnRef();
 577
 578     // Make sure this object has only one reference
 579     void UnShare() { AllocExclusive(); }
 580
 581     // check if this object references the same data as the other one
 582     bool IsSameAs(const wxObject& o) const { return m_refData == o.m_refData; }
 583
 584 protected:
 585     // ensure that our data is not shared with anybody else: if we have no
 586     // data, it is created using CreateRefData() below, if we have shared data
 587     // it is copied using CloneRefData(), otherwise nothing is done
 588     void AllocExclusive();
 589
 590     // both methods must be implemented if AllocExclusive() is used, not pure
 591     // virtual only because of the backwards compatibility reasons
 592
 593     // create a new m_refData
 594     virtual wxObjectRefData *CreateRefData() const;
 595
 596     // create a new m_refData initialized with the given one
 597     virtual wxObjectRefData *CloneRefData(const wxObjectRefData *data) const;
 598
 599     wxObjectRefData *m_refData;
 600 };
 601
 602 inline wxObject *wxCheckDynamicCast(wxObject *obj, wxClassInfo *classInfo)
 603 {
 604     return obj && obj->GetClassInfo()->IsKindOf(classInfo) ? obj : NULL;
 605 }
 606
 607 #if wxUSE_EXTENDED_RTTI
 608 class WXDLLIMPEXP_BASE wxDynamicObject : public wxObject
 609 {
 610     friend class WXDLLIMPEXP_FWD_BASE wxDynamicClassInfo ;
 611 public:
 612     // instantiates this object with an instance of its superclass
 613     wxDynamicObject(wxObject* superClassInstance, const wxDynamicClassInfo *info) ;
 614     virtual ~wxDynamicObject();
 615
 616     void SetProperty (const wxChar *propertyName, const wxxVariant &value);
 617     wxxVariant GetProperty (const wxChar *propertyName) const ;
 618
 619     // get the runtime identity of this object
 620     wxClassInfo *GetClassInfo() const
 621     {
 622 #ifdef _MSC_VER
 623         return (wxClassInfo*) m_classInfo;
 624 #else
 625         wxDynamicClassInfo *nonconst = const_cast<wxDynamicClassInfo *>(m_classInfo);
 626         return static_cast<wxClassInfo *>(nonconst);
 627 #endif
 628     }
 629
 630     wxObject* GetSuperClassInstance() const
 631     {
 632         return m_superClassInstance ;
 633     }
 634 private :
 635     // removes an existing runtime-property
 636     void RemoveProperty( const wxChar *propertyName ) ;
 637
 638     // renames an existing runtime-property
 639     void RenameProperty( const wxChar *oldPropertyName , const wxChar *newPropertyName ) ;
 640
 641     wxObject *m_superClassInstance ;
 642     const wxDynamicClassInfo *m_classInfo;
 643     struct wxDynamicObjectInternal;
 644     wxDynamicObjectInternal *m_data;
 645 };
 646 #endif
 647
 648 // ----------------------------------------------------------------------------
 649 // more debugging macros
 650 // ----------------------------------------------------------------------------
 651
 652 #if wxUSE_DEBUG_NEW_ALWAYS
 653     #define WXDEBUG_NEW new(__TFILE__,__LINE__)
 654
 655     #if wxUSE_GLOBAL_MEMORY_OPERATORS
 656         #define new WXDEBUG_NEW
 657     #elif defined(__VISUALC__)
 658         // Including this file redefines new and allows leak reports to
 659         // contain line numbers
 660         #include "wx/msw/msvcrt.h"
 661     #endif
 662 #endif // wxUSE_DEBUG_NEW_ALWAYS
 663
 664 #endif // _WX_OBJECTH__