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 wxHashTable_Node;
  73
  74 // ----------------------------------------------------------------------------
  75 // wxClassInfo
  76 // ----------------------------------------------------------------------------
  77
  78 typedef wxObject *(*wxObjectConstructorFn)(void);
  79
  80 class WXDLLIMPEXP_BASE wxClassInfo
  81 {
  82     friend class WXDLLIMPEXP_FWD_BASE wxObject;
  83     friend WXDLLIMPEXP_BASE wxObject *wxCreateDynamicObject(const wxString& name);
  84 public:
  85     wxClassInfo( const wxChar *className,
  86                  const wxClassInfo *baseInfo1,
  87                  const wxClassInfo *baseInfo2,
  88                  int size,
  89                  wxObjectConstructorFn ctor )
  90         : m_className(className)
  91         , m_objectSize(size)
  92         , m_objectConstructor(ctor)
  93         , m_baseInfo1(baseInfo1)
  94         , m_baseInfo2(baseInfo2)
  95         , m_next(sm_first)
  96         {
  97             sm_first = this;
  98             Register();
  99         }
 100
 101     ~wxClassInfo();
 102
 103     wxObject *CreateObject() const
 104         { return m_objectConstructor ? (*m_objectConstructor)() : 0; }
 105     bool IsDynamic() const { return (NULL != m_objectConstructor); }
 106
 107     const wxChar       *GetClassName() const { return m_className; }
 108     const wxChar       *GetBaseClassName1() const
 109         { return m_baseInfo1 ? m_baseInfo1->GetClassName() : NULL; }
 110     const wxChar       *GetBaseClassName2() const
 111         { return m_baseInfo2 ? m_baseInfo2->GetClassName() : NULL; }
 112     const wxClassInfo  *GetBaseClass1() const { return m_baseInfo1; }
 113     const wxClassInfo  *GetBaseClass2() const { return m_baseInfo2; }
 114     int                 GetSize() const { return m_objectSize; }
 115
 116     wxObjectConstructorFn      GetConstructor() const
 117         { return m_objectConstructor; }
 118     static const wxClassInfo  *GetFirst() { return sm_first; }
 119     const wxClassInfo         *GetNext() const { return m_next; }
 120     static wxClassInfo        *FindClass(const wxString& className);
 121
 122         // Climb upwards through inheritance hierarchy.
 123         // Dual inheritance is catered for.
 124
 125     bool IsKindOf(const wxClassInfo *info) const
 126     {
 127         return info != 0 &&
 128                ( info == this ||
 129                  ( m_baseInfo1 && m_baseInfo1->IsKindOf(info) ) ||
 130                  ( m_baseInfo2 && m_baseInfo2->IsKindOf(info) ) );
 131     }
 132
 133     DECLARE_CLASS_INFO_ITERATORS()
 134 private:
 135     const wxChar            *m_className;
 136     int                      m_objectSize;
 137     wxObjectConstructorFn    m_objectConstructor;
 138
 139         // Pointers to base wxClassInfos
 140
 141     const wxClassInfo       *m_baseInfo1;
 142     const wxClassInfo       *m_baseInfo2;
 143
 144         // class info object live in a linked list:
 145         // pointers to its head and the next element in it
 146
 147     static wxClassInfo      *sm_first;
 148     wxClassInfo             *m_next;
 149
 150     static wxHashTable      *sm_classTable;
 151
 152 protected:
 153     // registers the class
 154     void Register();
 155     void Unregister();
 156
 157     wxDECLARE_NO_COPY_CLASS(wxClassInfo);
 158 };
 159
 160 WXDLLIMPEXP_BASE wxObject *wxCreateDynamicObject(const wxString& name);
 161
 162 // ----------------------------------------------------------------------------
 163 // Dynamic class macros
 164 // ----------------------------------------------------------------------------
 165
 166 #define DECLARE_ABSTRACT_CLASS(name)                                          \
 167     public:                                                                   \
 168         static wxClassInfo ms_classInfo;                                      \
 169         virtual wxClassInfo *GetClassInfo() const;
 170
 171 #define DECLARE_DYNAMIC_CLASS_NO_ASSIGN(name)                                 \
 172     DECLARE_NO_ASSIGN_CLASS(name)                                             \
 173     DECLARE_DYNAMIC_CLASS(name)
 174
 175 #define DECLARE_DYNAMIC_CLASS_NO_COPY(name)                                   \
 176     DECLARE_NO_COPY_CLASS(name)                                               \
 177     DECLARE_DYNAMIC_CLASS(name)
 178
 179 #define DECLARE_DYNAMIC_CLASS(name)                                           \
 180     DECLARE_ABSTRACT_CLASS(name)                                              \
 181     static wxObject* wxCreateObject();
 182
 183 #define DECLARE_CLASS(name) DECLARE_DYNAMIC_CLASS(name)
 184
 185
 186 // common part of the macros below
 187 #define wxIMPLEMENT_CLASS_COMMON(name, basename, baseclsinfo2, func)          \
 188     wxClassInfo name::ms_classInfo(wxT(#name),                                \
 189             &basename::ms_classInfo,                                          \
 190             baseclsinfo2,                                                     \
 191             (int) sizeof(name),                                               \
 192             func);                                                            \
 193                                                                               \
 194     wxClassInfo *name::GetClassInfo() const                                   \
 195         { return &name::ms_classInfo; }
 196
 197 #define wxIMPLEMENT_CLASS_COMMON1(name, basename, func)                       \
 198     wxIMPLEMENT_CLASS_COMMON(name, basename, NULL, func)
 199
 200 #define wxIMPLEMENT_CLASS_COMMON2(name, basename1, basename2, func)           \
 201     wxIMPLEMENT_CLASS_COMMON(name, basename1, &basename2::ms_classInfo, func)
 202
 203 // -----------------------------------
 204 // for concrete classes
 205 // -----------------------------------
 206
 207     // Single inheritance with one base class
 208 #define IMPLEMENT_DYNAMIC_CLASS(name, basename)                               \
 209     wxIMPLEMENT_CLASS_COMMON1(name, basename, name::wxCreateObject)           \
 210     wxObject* name::wxCreateObject()                                          \
 211         { return new name; }
 212
 213     // Multiple inheritance with two base classes
 214 #define IMPLEMENT_DYNAMIC_CLASS2(name, basename1, basename2)                  \
 215     wxIMPLEMENT_CLASS_COMMON2(name, basename1, basename2,                     \
 216                               name::wxCreateObject)                           \
 217     wxObject* name::wxCreateObject()                                          \
 218         { return new name; }
 219
 220 // -----------------------------------
 221 // for abstract classes
 222 // -----------------------------------
 223
 224     // Single inheritance with one base class
 225
 226 #define IMPLEMENT_ABSTRACT_CLASS(name, basename)                              \
 227     wxIMPLEMENT_CLASS_COMMON1(name, basename, NULL)
 228
 229     // Multiple inheritance with two base classes
 230
 231 #define IMPLEMENT_ABSTRACT_CLASS2(name, basename1, basename2)                 \
 232     wxIMPLEMENT_CLASS_COMMON2(name, basename1, basename2, NULL)
 233
 234 #define IMPLEMENT_CLASS IMPLEMENT_ABSTRACT_CLASS
 235 #define IMPLEMENT_CLASS2 IMPLEMENT_ABSTRACT_CLASS2
 236
 237 #endif // !wxUSE_EXTENDED_RTTI
 238
 239
 240 // -----------------------------------
 241 // for pluggable classes
 242 // -----------------------------------
 243
 244     // NOTE: this should probably be the very first statement
 245     //       in the class declaration so wxPluginSentinel is
 246     //       the first member initialised and the last destroyed.
 247
 248 // _DECLARE_DL_SENTINEL(name) wxPluginSentinel m_pluginsentinel;
 249
 250 #if wxUSE_NESTED_CLASSES
 251
 252 #define _DECLARE_DL_SENTINEL(name, exportdecl)  \
 253 class exportdecl name##PluginSentinel {         \
 254 private:                                        \
 255     static const wxString sm_className;         \
 256 public:                                         \
 257     name##PluginSentinel();                     \
 258     ~name##PluginSentinel();                    \
 259 };                                              \
 260 name##PluginSentinel  m_pluginsentinel;
 261
 262 #define _IMPLEMENT_DL_SENTINEL(name)                                \
 263  const wxString name::name##PluginSentinel::sm_className(#name);    \
 264  name::name##PluginSentinel::name##PluginSentinel() {               \
 265     wxPluginLibrary *e = (wxPluginLibrary*) wxPluginLibrary::ms_classes.Get(#name);   \
 266     if( e != 0 ) { e->RefObj(); }                                      \
 267  }                                                                  \
 268  name::name##PluginSentinel::~name##PluginSentinel() {            \
 269     wxPluginLibrary *e = (wxPluginLibrary*) wxPluginLibrary::ms_classes.Get(#name);   \
 270     if( e != 0 ) { e->UnrefObj(); }                                 \
 271  }
 272 #else
 273
 274 #define _DECLARE_DL_SENTINEL(name)
 275 #define _IMPLEMENT_DL_SENTINEL(name)
 276
 277 #endif  // wxUSE_NESTED_CLASSES
 278
 279 #define DECLARE_PLUGGABLE_CLASS(name) \
 280  DECLARE_DYNAMIC_CLASS(name) _DECLARE_DL_SENTINEL(name, WXDLLIMPEXP_CORE)
 281 #define DECLARE_ABSTRACT_PLUGGABLE_CLASS(name)  \
 282  DECLARE_ABSTRACT_CLASS(name) _DECLARE_DL_SENTINEL(name, WXDLLIMPEXP_CORE)
 283
 284 #define DECLARE_USER_EXPORTED_PLUGGABLE_CLASS(name, usergoo) \
 285  DECLARE_DYNAMIC_CLASS(name) _DECLARE_DL_SENTINEL(name, usergoo)
 286 #define DECLARE_USER_EXPORTED_ABSTRACT_PLUGGABLE_CLASS(name, usergoo)  \
 287  DECLARE_ABSTRACT_CLASS(name) _DECLARE_DL_SENTINEL(name, usergoo)
 288
 289 #define IMPLEMENT_PLUGGABLE_CLASS(name, basename) \
 290  IMPLEMENT_DYNAMIC_CLASS(name, basename) _IMPLEMENT_DL_SENTINEL(name)
 291 #define IMPLEMENT_PLUGGABLE_CLASS2(name, basename1, basename2)  \
 292  IMPLEMENT_DYNAMIC_CLASS2(name, basename1, basename2) _IMPLEMENT_DL_SENTINEL(name)
 293 #define IMPLEMENT_ABSTRACT_PLUGGABLE_CLASS(name, basename) \
 294  IMPLEMENT_ABSTRACT_CLASS(name, basename) _IMPLEMENT_DL_SENTINEL(name)
 295 #define IMPLEMENT_ABSTRACT_PLUGGABLE_CLASS2(name, basename1, basename2)  \
 296  IMPLEMENT_ABSTRACT_CLASS2(name, basename1, basename2) _IMPLEMENT_DL_SENTINEL(name)
 297
 298 #define IMPLEMENT_USER_EXPORTED_PLUGGABLE_CLASS(name, basename) \
 299  IMPLEMENT_PLUGGABLE_CLASS(name, basename)
 300 #define IMPLEMENT_USER_EXPORTED_PLUGGABLE_CLASS2(name, basename1, basename2)  \
 301  IMPLEMENT_PLUGGABLE_CLASS2(name, basename1, basename2)
 302 #define IMPLEMENT_USER_EXPORTED_ABSTRACT_PLUGGABLE_CLASS(name, basename) \
 303  IMPLEMENT_ABSTRACT_PLUGGABLE_CLASS(name, basename)
 304 #define IMPLEMENT_USER_EXPORTED_ABSTRACT_PLUGGABLE_CLASS2(name, basename1, basename2)  \
 305  IMPLEMENT_ABSTRACT_PLUGGABLE_CLASS2(name, basename1, basename2)
 306
 307 #define CLASSINFO(name) (&name::ms_classInfo)
 308
 309 #define wxIS_KIND_OF(obj, className) obj->IsKindOf(&className::ms_classInfo)
 310
 311 // Just seems a bit nicer-looking (pretend it's not a macro)
 312 #define wxIsKindOf(obj, className) obj->IsKindOf(&className::ms_classInfo)
 313
 314 // this cast does some more checks at compile time as it uses static_cast
 315 // internally
 316 //
 317 // note that it still has different semantics from dynamic_cast<> and so can't
 318 // be replaced by it as long as there are any compilers not supporting it
 319 #define wxDynamicCast(obj, className) \
 320     ((className *) wxCheckDynamicCast( \
 321         const_cast<wxObject *>(static_cast<const wxObject *>(\
 322           const_cast<className *>(static_cast<const className *>(obj)))), \
 323         &className::ms_classInfo))
 324
 325 // The 'this' pointer is always true, so use this version
 326 // to cast the this pointer and avoid compiler warnings.
 327 #define wxDynamicCastThis(className) \
 328      (IsKindOf(&className::ms_classInfo) ? (className *)(this) : (className *)0)
 329
 330 // FIXME-VC6: dummy argument needed because VC6 doesn't support explicitly
 331 //            choosing the template function to call
 332 template <class T>
 333 inline T *wxCheckCast(const void *ptr, T * = NULL)
 334 {
 335     wxASSERT_MSG( wxDynamicCast(ptr, T), "wxStaticCast() used incorrectly" );
 336     return const_cast<T *>(static_cast<const T *>(ptr));
 337 }
 338
 339 #define wxStaticCast(obj, className) wxCheckCast((obj), (className *)NULL)
 340
 341 // ----------------------------------------------------------------------------
 342 // set up memory debugging macros
 343 // ----------------------------------------------------------------------------
 344
 345 /*
 346     Which new/delete operator variants do we want?
 347
 348     _WX_WANT_NEW_SIZET_WXCHAR_INT             = void *operator new (size_t size, wxChar *fileName = 0, int lineNum = 0)
 349     _WX_WANT_DELETE_VOID                      = void operator delete (void * buf)
 350     _WX_WANT_DELETE_VOID_CONSTCHAR_SIZET      = void operator delete (void *buf, const char *_fname, size_t _line)
 351     _WX_WANT_DELETE_VOID_WXCHAR_INT           = void operator delete(void *buf, wxChar*, int)
 352     _WX_WANT_ARRAY_NEW_SIZET_WXCHAR_INT       = void *operator new[] (size_t size, wxChar *fileName , int lineNum = 0)
 353     _WX_WANT_ARRAY_DELETE_VOID                = void operator delete[] (void *buf)
 354     _WX_WANT_ARRAY_DELETE_VOID_WXCHAR_INT     = void operator delete[] (void* buf, wxChar*, int )
 355 */
 356
 357 #if wxUSE_MEMORY_TRACING
 358
 359 // All compilers get this one
 360 #define _WX_WANT_NEW_SIZET_WXCHAR_INT
 361
 362 // Everyone except Visage gets the next one
 363 #ifndef __VISAGECPP__
 364     #define _WX_WANT_DELETE_VOID
 365 #endif
 366
 367 // Only visage gets this one under the correct circumstances
 368 #if defined(__VISAGECPP__) && __DEBUG_ALLOC__
 369     #define _WX_WANT_DELETE_VOID_CONSTCHAR_SIZET
 370 #endif
 371
 372 // Only VC++ 6 and CodeWarrior get overloaded delete that matches new
 373 #if (defined(__VISUALC__) && (__VISUALC__ >= 1200)) || \
 374         (defined(__MWERKS__) && (__MWERKS__ >= 0x2400))
 375     #define _WX_WANT_DELETE_VOID_WXCHAR_INT
 376 #endif
 377
 378 // Now see who (if anyone) gets the array memory operators
 379 #if wxUSE_ARRAY_MEMORY_OPERATORS
 380
 381     // Everyone except Visual C++ (cause problems for VC++ - crashes)
 382     #if !defined(__VISUALC__)
 383         #define _WX_WANT_ARRAY_NEW_SIZET_WXCHAR_INT
 384     #endif
 385
 386     // Everyone except Visual C++ (cause problems for VC++ - crashes)
 387     #if !defined(__VISUALC__)
 388         #define _WX_WANT_ARRAY_DELETE_VOID
 389     #endif
 390
 391     // Only CodeWarrior 6 or higher
 392     #if defined(__MWERKS__) && (__MWERKS__ >= 0x2400)
 393         #define _WX_WANT_ARRAY_DELETE_VOID_WXCHAR_INT
 394     #endif
 395
 396 #endif // wxUSE_ARRAY_MEMORY_OPERATORS
 397
 398 #endif // wxUSE_MEMORY_TRACING
 399
 400 // ----------------------------------------------------------------------------
 401 // wxRefCounter: ref counted data "manager"
 402 // ----------------------------------------------------------------------------
 403
 404 class WXDLLIMPEXP_BASE wxRefCounter
 405 {
 406 public:
 407     wxRefCounter() { m_count = 1; }
 408
 409     int GetRefCount() const { return m_count; }
 410
 411     void IncRef() { m_count++; }
 412     void DecRef();
 413
 414 protected:
 415     // this object should never be destroyed directly but only as a
 416     // result of a DecRef() call:
 417     virtual ~wxRefCounter() { }
 418
 419 private:
 420     // our refcount:
 421     int m_count;
 422 };
 423
 424 // ----------------------------------------------------------------------------
 425 // wxObjectRefData: ref counted data meant to be stored in wxObject
 426 // ----------------------------------------------------------------------------
 427
 428 typedef wxRefCounter wxObjectRefData;
 429
 430
 431 // ----------------------------------------------------------------------------
 432 // wxObjectDataPtr: helper class to avoid memleaks because of missing calls
 433 //                  to wxObjectRefData::DecRef
 434 // ----------------------------------------------------------------------------
 435
 436 template <class T>
 437 class wxObjectDataPtr
 438 {
 439 public:
 440     typedef T element_type;
 441
 442     wxEXPLICIT wxObjectDataPtr(T *ptr = NULL) : m_ptr(ptr) {}
 443
 444     // copy ctor
 445     wxObjectDataPtr(const wxObjectDataPtr<T> &tocopy)
 446         : m_ptr(tocopy.m_ptr)
 447     {
 448         if (m_ptr)
 449             m_ptr->IncRef();
 450     }
 451
 452     ~wxObjectDataPtr()
 453     {
 454         if (m_ptr)
 455             m_ptr->DecRef();
 456     }
 457
 458     T *get() const { return m_ptr; }
 459
 460     // test for pointer validity: defining conversion to unspecified_bool_type
 461     // and not more obvious bool to avoid implicit conversions to integer types
 462     typedef T *(wxObjectDataPtr<T>::*unspecified_bool_type)() const;
 463     operator unspecified_bool_type() const
 464     {
 465         return m_ptr ? &wxObjectDataPtr<T>::get : NULL;
 466     }
 467
 468     T& operator*() const
 469     {
 470         wxASSERT(m_ptr != NULL);
 471         return *(m_ptr);
 472     }
 473
 474     T *operator->() const
 475     {
 476         wxASSERT(m_ptr != NULL);
 477         return get();
 478     }
 479
 480     void reset(T *ptr)
 481     {
 482         if (m_ptr)
 483             m_ptr->DecRef();
 484         m_ptr = ptr;
 485     }
 486
 487     wxObjectDataPtr& operator=(const wxObjectDataPtr &tocopy)
 488     {
 489         if (m_ptr)
 490             m_ptr->DecRef();
 491         m_ptr = tocopy.m_ptr;
 492         if (m_ptr)
 493             m_ptr->IncRef();
 494         return *this;
 495     }
 496
 497     wxObjectDataPtr& operator=(T *ptr)
 498     {
 499         if (m_ptr)
 500             m_ptr->DecRef();
 501         m_ptr = ptr;
 502         return *this;
 503     }
 504
 505 private:
 506     T *m_ptr;
 507 };
 508
 509 // ----------------------------------------------------------------------------
 510 // wxObject: the root class of wxWidgets object hierarchy
 511 // ----------------------------------------------------------------------------
 512
 513 class WXDLLIMPEXP_BASE wxObject
 514 {
 515     DECLARE_ABSTRACT_CLASS(wxObject)
 516
 517 public:
 518     wxObject() { m_refData = NULL; }
 519     virtual ~wxObject() { UnRef(); }
 520
 521     wxObject(const wxObject& other)
 522     {
 523          m_refData = other.m_refData;
 524          if (m_refData)
 525              m_refData->IncRef();
 526     }
 527
 528     wxObject& operator=(const wxObject& other)
 529     {
 530         if ( this != &other )
 531         {
 532             Ref(other);
 533         }
 534         return *this;
 535     }
 536
 537     bool IsKindOf(const wxClassInfo *info) const;
 538
 539
 540     // Turn on the correct set of new and delete operators
 541
 542 #ifdef _WX_WANT_NEW_SIZET_WXCHAR_INT
 543     void *operator new ( size_t size, const wxChar *fileName = NULL, int lineNum = 0 );
 544 #endif
 545
 546 #ifdef _WX_WANT_DELETE_VOID
 547     void operator delete ( void * buf );
 548 #endif
 549
 550 #ifdef _WX_WANT_DELETE_VOID_CONSTCHAR_SIZET
 551     void operator delete ( void *buf, const char *_fname, size_t _line );
 552 #endif
 553
 554 #ifdef _WX_WANT_DELETE_VOID_WXCHAR_INT
 555     void operator delete ( void *buf, const wxChar*, int );
 556 #endif
 557
 558 #ifdef _WX_WANT_ARRAY_NEW_SIZET_WXCHAR_INT
 559     void *operator new[] ( size_t size, const wxChar *fileName = NULL, int lineNum = 0 );
 560 #endif
 561
 562 #ifdef _WX_WANT_ARRAY_DELETE_VOID
 563     void operator delete[] ( void *buf );
 564 #endif
 565
 566 #ifdef _WX_WANT_ARRAY_DELETE_VOID_WXCHAR_INT
 567     void operator delete[] (void* buf, const wxChar*, int );
 568 #endif
 569
 570     // ref counted data handling methods
 571
 572     // get/set
 573     wxObjectRefData *GetRefData() const { return m_refData; }
 574     void SetRefData(wxObjectRefData *data) { m_refData = data; }
 575
 576     // make a 'clone' of the object
 577     void Ref(const wxObject& clone);
 578
 579     // destroy a reference
 580     void UnRef();
 581
 582     // Make sure this object has only one reference
 583     void UnShare() { AllocExclusive(); }
 584
 585     // check if this object references the same data as the other one
 586     bool IsSameAs(const wxObject& o) const { return m_refData == o.m_refData; }
 587
 588 protected:
 589     // ensure that our data is not shared with anybody else: if we have no
 590     // data, it is created using CreateRefData() below, if we have shared data
 591     // it is copied using CloneRefData(), otherwise nothing is done
 592     void AllocExclusive();
 593
 594     // both methods must be implemented if AllocExclusive() is used, not pure
 595     // virtual only because of the backwards compatibility reasons
 596
 597     // create a new m_refData
 598     virtual wxObjectRefData *CreateRefData() const;
 599
 600     // create a new m_refData initialized with the given one
 601     virtual wxObjectRefData *CloneRefData(const wxObjectRefData *data) const;
 602
 603     wxObjectRefData *m_refData;
 604 };
 605
 606 inline wxObject *wxCheckDynamicCast(wxObject *obj, wxClassInfo *classInfo)
 607 {
 608     return obj && obj->GetClassInfo()->IsKindOf(classInfo) ? obj : NULL;
 609 }
 610
 611 #if wxUSE_EXTENDED_RTTI
 612 class WXDLLIMPEXP_BASE wxDynamicObject : public wxObject
 613 {
 614     friend class WXDLLIMPEXP_FWD_BASE wxDynamicClassInfo ;
 615 public:
 616     // instantiates this object with an instance of its superclass
 617     wxDynamicObject(wxObject* superClassInstance, const wxDynamicClassInfo *info) ;
 618     virtual ~wxDynamicObject();
 619
 620     void SetProperty (const wxChar *propertyName, const wxxVariant &value);
 621     wxxVariant GetProperty (const wxChar *propertyName) const ;
 622
 623     // get the runtime identity of this object
 624     wxClassInfo *GetClassInfo() const
 625     {
 626 #ifdef _MSC_VER
 627         return (wxClassInfo*) m_classInfo;
 628 #else
 629         wxDynamicClassInfo *nonconst = const_cast<wxDynamicClassInfo *>(m_classInfo);
 630         return static_cast<wxClassInfo *>(nonconst);
 631 #endif
 632     }
 633
 634     wxObject* GetSuperClassInstance() const
 635     {
 636         return m_superClassInstance ;
 637     }
 638 private :
 639     // removes an existing runtime-property
 640     void RemoveProperty( const wxChar *propertyName ) ;
 641
 642     // renames an existing runtime-property
 643     void RenameProperty( const wxChar *oldPropertyName , const wxChar *newPropertyName ) ;
 644
 645     wxObject *m_superClassInstance ;
 646     const wxDynamicClassInfo *m_classInfo;
 647     struct wxDynamicObjectInternal;
 648     wxDynamicObjectInternal *m_data;
 649 };
 650 #endif
 651
 652 // ----------------------------------------------------------------------------
 653 // more debugging macros
 654 // ----------------------------------------------------------------------------
 655
 656 #if wxUSE_DEBUG_NEW_ALWAYS
 657     #define WXDEBUG_NEW new(__TFILE__,__LINE__)
 658
 659     #if wxUSE_GLOBAL_MEMORY_OPERATORS
 660         #define new WXDEBUG_NEW
 661     #elif defined(__VISUALC__)
 662         // Including this file redefines new and allows leak reports to
 663         // contain line numbers
 664         #include "wx/msw/msvcrt.h"
 665     #endif
 666 #endif // wxUSE_DEBUG_NEW_ALWAYS
 667
 668 #endif // _WX_OBJECTH__