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 #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
  17 #pragma interface "object.h"
  18 #endif
  19
  20 // ----------------------------------------------------------------------------
  21 // headers
  22 // ----------------------------------------------------------------------------
  23
  24 #include "wx/defs.h"
  25 #include "wx/memory.h"
  26
  27 class WXDLLIMPEXP_BASE wxObject;
  28
  29 #if wxUSE_DYNAMIC_CLASSES
  30
  31 #ifndef wxUSE_EXTENDED_RTTI
  32 #define wxUSE_EXTENDED_RTTI 0
  33 #endif
  34
  35 #if wxUSE_EXTENDED_RTTI
  36 #include "wx/xti.h"
  37 #else
  38
  39 // ----------------------------------------------------------------------------
  40 // conditional compilation
  41 // ----------------------------------------------------------------------------
  42
  43 // this shouldn't be needed any longer as <wx/msw/private.h> does it but it
  44 // doesn't hurt neither
  45 #ifdef GetClassName
  46 #undef GetClassName
  47 #endif
  48 #ifdef GetClassInfo
  49 #undef GetClassInfo
  50 #endif
  51
  52 class WXDLLIMPEXP_BASE wxClassInfo;
  53 class WXDLLIMPEXP_BASE wxHashTable;
  54 class WXDLLIMPEXP_BASE wxObjectRefData;
  55
  56 // ----------------------------------------------------------------------------
  57 // wxClassInfo
  58 // ----------------------------------------------------------------------------
  59
  60 typedef wxObject *(*wxObjectConstructorFn)(void);
  61
  62 class WXDLLIMPEXP_BASE wxClassInfo
  63 {
  64 public:
  65     wxClassInfo( const wxChar *className,
  66                  const wxClassInfo *baseInfo1,
  67                  const wxClassInfo *baseInfo2,
  68                  int size,
  69                  wxObjectConstructorFn ctor )
  70         : m_className(className)
  71         , m_objectSize(size)
  72         , m_objectConstructor(ctor)
  73         , m_baseInfo1(baseInfo1)
  74         , m_baseInfo2(baseInfo2)
  75         , m_next(sm_first)
  76         {
  77             sm_first = this;
  78             Register();
  79         }
  80
  81     ~wxClassInfo();
  82
  83     wxObject *CreateObject() { return m_objectConstructor ? (*m_objectConstructor)() : 0; }
  84
  85     const wxChar       *GetClassName() const { return m_className; }
  86     const wxChar       *GetBaseClassName1() const
  87         { return m_baseInfo1 ? m_baseInfo1->GetClassName() : NULL; }
  88     const wxChar       *GetBaseClassName2() const
  89         { return m_baseInfo2 ? m_baseInfo2->GetClassName() : NULL; }
  90     const wxClassInfo  *GetBaseClass1() const { return m_baseInfo1; }
  91     const wxClassInfo  *GetBaseClass2() const { return m_baseInfo2; }
  92     int                 GetSize() const { return m_objectSize; }
  93
  94     wxObjectConstructorFn      GetConstructor() const { return m_objectConstructor; }
  95     static const wxClassInfo  *GetFirst() { return sm_first; }
  96     const wxClassInfo         *GetNext() const { return m_next; }
  97     static wxClassInfo        *FindClass(const wxChar *className);
  98
  99         // Climb upwards through inheritance hierarchy.
 100         // Dual inheritance is catered for.
 101
 102     bool IsKindOf(const wxClassInfo *info) const
 103     {
 104         return info != 0 &&
 105                ( info == this ||
 106                  ( m_baseInfo1 && m_baseInfo1->IsKindOf(info) ) ||
 107                  ( m_baseInfo2 && m_baseInfo2->IsKindOf(info) ) );
 108     }
 109
 110 #ifdef WXWIN_COMPATIBILITY_2_4
 111     // Initializes parent pointers and hash table for fast searching.
 112     wxDEPRECATED( static void     InitializeClasses() );
 113     // Cleans up hash table used for fast searching.
 114     wxDEPRECATED( static void     CleanUpClasses() );
 115 #endif
 116     static void     CleanUp();
 117
 118 public:
 119     const wxChar            *m_className;
 120     int                      m_objectSize;
 121     wxObjectConstructorFn    m_objectConstructor;
 122
 123         // Pointers to base wxClassInfos: set in InitializeClasses
 124
 125     const wxClassInfo       *m_baseInfo1;
 126     const wxClassInfo       *m_baseInfo2;
 127
 128         // class info object live in a linked list:
 129         // pointers to its head and the next element in it
 130
 131     static wxClassInfo      *sm_first;
 132     wxClassInfo             *m_next;
 133
 134     // FIXME: this should be private (currently used directly by way too
 135     //        many clients)
 136     static wxHashTable      *sm_classTable;
 137
 138 private:
 139     // InitializeClasses() helper
 140     static wxClassInfo *GetBaseByName(const wxChar *name);
 141
 142     DECLARE_NO_COPY_CLASS(wxClassInfo)
 143
 144 protected:
 145     // registers the class
 146     void Register();
 147     void Unregister();
 148 };
 149
 150 WXDLLIMPEXP_BASE wxObject *wxCreateDynamicObject(const wxChar *name);
 151
 152 #ifdef WXWIN_COMPATIBILITY_2_4
 153 inline void wxClassInfo::InitializeClasses() {}
 154 inline void wxClassInfo::CleanUpClasses() {}
 155 #endif
 156
 157 // ----------------------------------------------------------------------------
 158 // Dynamic class macros
 159 // ----------------------------------------------------------------------------
 160
 161 #define DECLARE_DYNAMIC_CLASS(name)           \
 162  public:                                      \
 163   static wxClassInfo sm_class##name;          \
 164   virtual wxClassInfo *GetClassInfo() const   \
 165    { return &name::sm_class##name; }
 166
 167 #define DECLARE_DYNAMIC_CLASS_NO_ASSIGN(name)   \
 168     DECLARE_NO_ASSIGN_CLASS(name)               \
 169     DECLARE_DYNAMIC_CLASS(name)
 170
 171 #define DECLARE_DYNAMIC_CLASS_NO_COPY(name)   \
 172     DECLARE_NO_COPY_CLASS(name)               \
 173     DECLARE_DYNAMIC_CLASS(name)
 174
 175 #define DECLARE_ABSTRACT_CLASS(name) DECLARE_DYNAMIC_CLASS(name)
 176 #define DECLARE_CLASS(name) DECLARE_DYNAMIC_CLASS(name)
 177
 178 // -----------------------------------
 179 // for concrete classes
 180 // -----------------------------------
 181
 182     // Single inheritance with one base class
 183
 184 #define IMPLEMENT_DYNAMIC_CLASS(name, basename)                 \
 185  wxObject* wxConstructorFor##name()                             \
 186   { return new name; }                                          \
 187  wxClassInfo name::sm_class##name(wxT(#name),                   \
 188             &basename::sm_class##basename, NULL,                \
 189             (int) sizeof(name),                                 \
 190             (wxObjectConstructorFn) wxConstructorFor##name);
 191
 192     // Multiple inheritance with two base classes
 193
 194 #define IMPLEMENT_DYNAMIC_CLASS2(name, basename1, basename2)    \
 195  wxObject* wxConstructorFor##name()                             \
 196   { return new name; }                                          \
 197  wxClassInfo name::sm_class##name(wxT(#name),                   \
 198             &basename1::sm_class##basename1,                    \
 199             &basename2::sm_class##basename2,                    \
 200             wxT(#basename2), (int) sizeof(name),                \
 201             (wxObjectConstructorFn) wxConstructorFor##name);
 202
 203 // -----------------------------------
 204 // for abstract classes
 205 // -----------------------------------
 206
 207     // Single inheritance with one base class
 208
 209 #define IMPLEMENT_ABSTRACT_CLASS(name, basename)                \
 210  wxClassInfo name::sm_class##name(wxT(#name),                   \
 211             &basename::sm_class##basename, NULL,                \
 212             (int) sizeof(name), (wxObjectConstructorFn) 0);
 213
 214     // Multiple inheritance with two base classes
 215
 216 #define IMPLEMENT_ABSTRACT_CLASS2(name, basename1, basename2)   \
 217  wxClassInfo name::sm_class##name(wxT(#name),                   \
 218             &basename1::sm_class##basename1,                    \
 219             &basename2::sm_class##basename2,                    \
 220             (int) sizeof(name),                                 \
 221             (wxObjectConstructorFn) 0);
 222
 223 #define IMPLEMENT_CLASS IMPLEMENT_ABSTRACT_CLASS
 224 #define IMPLEMENT_CLASS2 IMPLEMENT_ABSTRACT_CLASS2
 225
 226 #endif // !wxUSE_EXTENDED_RTTI
 227
 228
 229 // -----------------------------------
 230 // for pluggable classes
 231 // -----------------------------------
 232
 233     // NOTE: this should probably be the very first statement
 234     //       in the class declaration so wxPluginSentinel is
 235     //       the first member initialised and the last destroyed.
 236
 237 // _DECLARE_DL_SENTINEL(name) wxPluginSentinel m_pluginsentinel;
 238
 239 #if wxUSE_NESTED_CLASSES
 240
 241 #define _DECLARE_DL_SENTINEL(name, exportdecl)  \
 242 class exportdecl name##PluginSentinel {         \
 243 private:                                        \
 244     static const wxString sm_className;         \
 245 public:                                         \
 246     name##PluginSentinel();                     \
 247     ~name##PluginSentinel();                    \
 248 };                                              \
 249 name##PluginSentinel  m_pluginsentinel;
 250
 251 #define _IMPLEMENT_DL_SENTINEL(name)                                \
 252  const wxString name::name##PluginSentinel::sm_className(#name);    \
 253  name::name##PluginSentinel::name##PluginSentinel() {               \
 254     wxPluginLibrary *e = (wxPluginLibrary*) wxPluginLibrary::ms_classes.Get(#name);   \
 255     if( e != 0 ) { e->RefObj(); }                                      \
 256  }                                                                  \
 257  name::name##PluginSentinel::~name##PluginSentinel() {            \
 258     wxPluginLibrary *e = (wxPluginLibrary*) wxPluginLibrary::ms_classes.Get(#name);   \
 259     if( e != 0 ) { e->UnrefObj(); }                                 \
 260  }
 261 #else
 262
 263 #define _DECLARE_DL_SENTINEL(name)
 264 #define _IMPLEMENT_DL_SENTINEL(name)
 265
 266 #endif  // wxUSE_NESTED_CLASSES
 267
 268 #define DECLARE_PLUGGABLE_CLASS(name) \
 269  DECLARE_DYNAMIC_CLASS(name) _DECLARE_DL_SENTINEL(name, WXDLLEXPORT)
 270 #define DECLARE_ABSTRACT_PLUGGABLE_CLASS(name)  \
 271  DECLARE_ABSTRACT_CLASS(name) _DECLARE_DL_SENTINEL(name, WXDLLEXPORT)
 272
 273 #define DECLARE_USER_EXPORTED_PLUGGABLE_CLASS(name, usergoo) \
 274  DECLARE_DYNAMIC_CLASS(name) _DECLARE_DL_SENTINEL(name, usergoo)
 275 #define DECLARE_USER_EXPORTED_ABSTRACT_PLUGGABLE_CLASS(name, usergoo)  \
 276  DECLARE_ABSTRACT_CLASS(name) _DECLARE_DL_SENTINEL(name, usergoo)
 277
 278 #define IMPLEMENT_PLUGGABLE_CLASS(name, basename) \
 279  IMPLEMENT_DYNAMIC_CLASS(name, basename) _IMPLEMENT_DL_SENTINEL(name)
 280 #define IMPLEMENT_PLUGGABLE_CLASS2(name, basename1, basename2)  \
 281  IMPLEMENT_DYNAMIC_CLASS2(name, basename1, basename2) _IMPLEMENT_DL_SENTINEL(name)
 282 #define IMPLEMENT_ABSTRACT_PLUGGABLE_CLASS(name, basename) \
 283  IMPLEMENT_ABSTRACT_CLASS(name, basename) _IMPLEMENT_DL_SENTINEL(name)
 284 #define IMPLEMENT_ABSTRACT_PLUGGABLE_CLASS2(name, basename1, basename2)  \
 285  IMPLEMENT_ABSTRACT_CLASS2(name, basename1, basename2) _IMPLEMENT_DL_SENTINEL(name)
 286
 287 #define IMPLEMENT_USER_EXPORTED_PLUGGABLE_CLASS(name, basename) \
 288  IMPLEMENT_PLUGGABLE_CLASS(name, basename)
 289 #define IMPLEMENT_USER_EXPORTED_PLUGGABLE_CLASS2(name, basename1, basename2)  \
 290  IMPLEMENT_PLUGGABLE_CLASS2(name, basename1, basename2)
 291 #define IMPLEMENT_USER_EXPORTED_ABSTRACT_PLUGGABLE_CLASS(name, basename) \
 292  IMPLEMENT_ABSTRACT_PLUGGABLE_CLASS(name, basename)
 293 #define IMPLEMENT_USER_EXPORTED_ABSTRACT_PLUGGABLE_CLASS2(name, basename1, basename2)  \
 294  IMPLEMENT_ABSTRACT_PLUGGABLE_CLASS2(name, basename1, basename2)
 295
 296 #define CLASSINFO(name) (&name::sm_class##name)
 297
 298 #else // !wxUSE_DYNAMIC_CLASSES
 299
 300     // No dynamic class system: so stub out the macros
 301
 302 #define DECLARE_DYNAMIC_CLASS(name)
 303 #define DECLARE_ABSTRACT_CLASS(name)
 304 #define DECLARE_CLASS(name)
 305 #define IMPLEMENT_DYNAMIC_CLASS(name, basename)
 306 #define IMPLEMENT_DYNAMIC_CLASS2(name, basename1, basename2)
 307 #define IMPLEMENT_ABSTRACT_CLASS(name, basename)
 308 #define IMPLEMENT_ABSTRACT_CLASS2(name, basename1, basename2)
 309 #define IMPLEMENT_CLASS IMPLEMENT_ABSTRACT_CLASS
 310 #define IMPLEMENT_CLASS2 IMPLEMENT_ABSTRACT_CLASS2
 311
 312 #define DECLARE_PLUGGABLE_CLASS(name)
 313 #define DECLARE_ABSTRACT_PLUGGABLE_CLASS(name)
 314 #define IMPLEMENT_PLUGGABLE_CLASS(name, basename)
 315 #define IMPLEMENT_PLUGGABLE_CLASS2(name, basename1, basename2)
 316 #define IMPLEMENT_ABSTRACT_PLUGGABLE_CLASS(name, basename)
 317 #define IMPLEMENT_ABSTRACT_PLUGGABLE_CLASS2(name, basename1, basename2)
 318
 319 #define DECLARE_USER_EXPORTED_PLUGGABLE_CLASS(name, usergoo)
 320 #define DECLARE_USER_EXPORTED_ABSTRACT_PLUGGABLE_CLASS(name, usergoo)
 321 #define IMPLEMENT_USER_EXPORTED_PLUGGABLE_CLASS(name, basename)
 322 #define IMPLEMENT_USER_EXPORTED_PLUGGABLE_CLASS2(name, basename1, basename2)
 323 #define IMPLEMENT_USER_EXPORTED_ABSTRACT_PLUGGABLE_CLASS(name, basename)
 324 #define IMPLEMENT_USER_EXPORTED_ABSTRACT_PLUGGABLE_CLASS2(name, basename1, basename2)
 325
 326 #endif // wxUSE_DYNAMIC_CLASSES
 327
 328 #define wxIS_KIND_OF(obj, className) obj->IsKindOf(&className::sm_class##className)
 329
 330 // Just seems a bit nicer-looking (pretend it's not a macro)
 331 #define wxIsKindOf(obj, className) obj->IsKindOf(&className::sm_class##className)
 332
 333 // to be replaced by dynamic_cast<> in the future
 334 #define wxDynamicCast(obj, className) \
 335  ((className *) wxCheckDynamicCast((wxObject*)(obj), &className::sm_class##className))
 336
 337 // The 'this' pointer is always true, so use this version
 338 // to cast the this pointer and avoid compiler warnings.
 339 #define wxDynamicCastThis(className) \
 340  (IsKindOf(&className::sm_class##className) ? (className *)(this) : (className *)0)
 341
 342 #ifdef HAVE_CONST_CAST
 343 #define wxConstCast(obj, className) const_cast<className *>(obj)
 344 #else
 345 #define wxConstCast(obj, className) ((className *)(obj))
 346 #endif
 347
 348
 349 #ifdef __WXDEBUG__
 350 inline void wxCheckCast(void *ptr)
 351 {
 352     wxASSERT_MSG( ptr, _T("wxStaticCast() used incorrectly") );
 353 }
 354 #define wxStaticCast(obj, className) \
 355  (wxCheckCast(wxDynamicCast(obj, className)), ((className *)(obj)))
 356
 357 #else  // !__WXDEBUG__
 358 #define wxStaticCast(obj, className) ((className *)(obj))
 359
 360 #endif  // __WXDEBUG__
 361
 362 // ----------------------------------------------------------------------------
 363 // set up memory debugging macros
 364 // ----------------------------------------------------------------------------
 365
 366 /*
 367     Which new/delete operator variants do we want?
 368
 369     _WX_WANT_NEW_SIZET_WXCHAR_INT             = void *operator new (size_t size, wxChar *fileName = 0, int lineNum = 0)
 370     _WX_WANT_DELETE_VOID                      = void operator delete (void * buf)
 371     _WX_WANT_DELETE_VOID_CONSTCHAR_SIZET      = void operator delete (void *buf, const char *_fname, size_t _line)
 372     _WX_WANT_DELETE_VOID_WXCHAR_INT           = void operator delete(void *buf, wxChar*, int)
 373     _WX_WANT_ARRAY_NEW_SIZET_WXCHAR_INT       = void *operator new[] (size_t size, wxChar *fileName , int lineNum = 0)
 374     _WX_WANT_ARRAY_DELETE_VOID                = void operator delete[] (void *buf)
 375     _WX_WANT_ARRAY_DELETE_VOID_WXCHAR_INT     = void operator delete[] (void* buf, wxChar*, int )
 376 */
 377
 378 #if defined(__WXDEBUG__) && wxUSE_MEMORY_TRACING
 379
 380 // All compilers get this one
 381 #define _WX_WANT_NEW_SIZET_WXCHAR_INT
 382
 383 // Everyone except Visage gets the next one
 384 #ifndef __VISAGECPP__
 385     #define _WX_WANT_DELETE_VOID
 386 #endif
 387
 388 // Only visage gets this one under the correct circumstances
 389 #if defined(__VISAGECPP__) && __DEBUG_ALLOC__
 390     #define _WX_WANT_DELETE_VOID_CONSTCHAR_SIZET
 391 #endif
 392
 393 // Only VC++ 6.0 and CodeWarrior compilers get overloaded delete that matches new
 394 #if ( defined(__VISUALC__) && (__VISUALC__ >= 1200) ) || (defined(__MWERKS__) && (__MWERKS__ >= 0x2400))
 395     #define _WX_WANT_DELETE_VOID_WXCHAR_INT
 396 #endif
 397
 398 // Now see who (if anyone) gets the array memory operators
 399 #if wxUSE_ARRAY_MEMORY_OPERATORS
 400
 401     // Everyone except Visual C++ (cause problems for VC++ - crashes)
 402     #if !defined(__VISUALC__)
 403         #define _WX_WANT_ARRAY_NEW_SIZET_WXCHAR_INT
 404     #endif
 405
 406     // Everyone except Visual C++ (cause problems for VC++ - crashes)
 407     #if !defined(__VISUALC__)
 408         #define _WX_WANT_ARRAY_DELETE_VOID
 409     #endif
 410
 411     // Only CodeWarrior 6 or higher
 412     #if defined(__MWERKS__) && (__MWERKS__ >= 0x2400)
 413         #define _WX_WANT_ARRAY_DELETE_VOID_WXCHAR_INT
 414     #endif
 415
 416 #endif // wxUSE_ARRAY_MEMORY_OPERATORS
 417
 418 #endif // WXDEBUG && wxUSE_MEMORY_TRACING
 419
 420 // ----------------------------------------------------------------------------
 421 // wxObject: the root class of wxWindows object hierarchy
 422 // ----------------------------------------------------------------------------
 423
 424 class WXDLLIMPEXP_BASE wxObject
 425 {
 426     DECLARE_ABSTRACT_CLASS(wxObject)
 427
 428 private:
 429     void InitFrom(const wxObject& other);
 430
 431 public:
 432     wxObject() { m_refData = NULL; }
 433     virtual ~wxObject() { UnRef(); }
 434
 435     wxObject(const wxObject& other)
 436         {
 437             InitFrom(other);
 438         }
 439
 440     wxObject& operator=(const wxObject& other)
 441     {
 442         if ( this != &other )
 443         {
 444             UnRef();
 445             InitFrom(other);
 446         }
 447         return *this;
 448     }
 449
 450     bool IsKindOf(wxClassInfo *info) const;
 451
 452
 453     // Turn on the correct set of new and delete operators
 454
 455 #ifdef _WX_WANT_NEW_SIZET_WXCHAR_INT
 456     void *operator new ( size_t size, const wxChar *fileName = NULL, int lineNum = 0 );
 457 #endif
 458
 459 #ifdef _WX_WANT_DELETE_VOID
 460     void operator delete ( void * buf );
 461 #endif
 462
 463 #ifdef _WX_WANT_DELETE_VOID_CONSTCHAR_SIZET
 464     void operator delete ( void *buf, const char *_fname, size_t _line );
 465 #endif
 466
 467 #ifdef _WX_WANT_DELETE_VOID_WXCHAR_INT
 468     void operator delete ( void *buf, const wxChar*, int );
 469 #endif
 470
 471 #ifdef _WX_WANT_ARRAY_NEW_SIZET_WXCHAR_INT
 472     void *operator new[] ( size_t size, const wxChar *fileName = NULL, int lineNum = 0 );
 473 #endif
 474
 475 #ifdef _WX_WANT_ARRAY_DELETE_VOID
 476     void operator delete[] ( void *buf );
 477 #endif
 478
 479 #ifdef _WX_WANT_ARRAY_DELETE_VOID_WXCHAR_INT
 480     void operator delete[] (void* buf, const wxChar*, int );
 481 #endif
 482
 483     // ref counted data handling methods
 484
 485     // get/set
 486     wxObjectRefData *GetRefData() const { return m_refData; }
 487     void SetRefData(wxObjectRefData *data) { m_refData = data; }
 488
 489     // make a 'clone' of the object
 490     void Ref(const wxObject& clone);
 491
 492     // destroy a reference
 493     void UnRef();
 494
 495 protected:
 496     // ensure that our data is not shared with anybody else: if we have no
 497     // data, it is created using CreateRefData() below, if we have shared data
 498     // it is copied using CloneRefData(), otherwise nothing is done
 499     void AllocExclusive();
 500
 501     // both methods must be implemented if Unshare() is used, not pure virtual
 502     // only because of the backwards compatibility reasons
 503
 504     // create a new m_refData
 505     virtual wxObjectRefData *CreateRefData() const;
 506
 507     // create a new m_refData initialized with the given one
 508     virtual wxObjectRefData *CloneRefData(const wxObjectRefData *data) const;
 509
 510     wxObjectRefData *m_refData;
 511 };
 512
 513 // ----------------------------------------------------------------------------
 514 // wxObjectRefData: ref counted data meant to be stored in wxObject
 515 // ----------------------------------------------------------------------------
 516
 517 class WXDLLIMPEXP_BASE wxObjectRefData
 518 {
 519     friend class WXDLLIMPEXP_BASE wxObject;
 520
 521 public:
 522     wxObjectRefData() : m_count(1) { }
 523     virtual ~wxObjectRefData() { }
 524
 525     int GetRefCount() const { return m_count; }
 526
 527 private:
 528     int m_count;
 529 };
 530
 531
 532 inline wxObject *wxCheckDynamicCast(wxObject *obj, wxClassInfo *classInfo)
 533 {
 534     return obj && obj->GetClassInfo()->IsKindOf(classInfo) ? obj : NULL;
 535 }
 536
 537 #if wxUSE_EXTENDED_RTTI
 538 class WXDLLIMPEXP_BASE wxDynamicObject : public wxObject
 539 {
 540     friend class WXDLLIMPEXP_BASE wxDynamicClassInfo ;
 541 public:
 542     // instantiates this object with an instance of its superclass
 543     wxDynamicObject(wxObject* superClassInstance, const wxDynamicClassInfo *info) ;
 544     ~wxDynamicObject();
 545
 546     void SetProperty (const wxChar *propertyName, const wxxVariant &value);
 547     wxxVariant GetProperty (const wxChar *propertyName) const ;
 548
 549     // get the runtime identity of this object
 550     wxClassInfo *GetClassInfo() const
 551     {
 552                 return const_cast<wxClassInfo*>((const wxClassInfo*)m_classInfo);
 553     }
 554
 555     wxObject* GetSuperClassInstance() const
 556     {
 557         return m_superClassInstance ;
 558     }
 559 private :
 560     // removes an existing runtime-property
 561     void RemoveProperty( const wxChar *propertyName ) ;
 562
 563     // renames an existing runtime-property
 564     void RenameProperty( const wxChar *oldPropertyName , const wxChar *newPropertyName ) ;
 565
 566     wxObject *m_superClassInstance ;
 567     const wxDynamicClassInfo *m_classInfo;
 568     struct wxDynamicObjectInternal;
 569     wxDynamicObjectInternal *m_data;
 570 };
 571 #endif
 572
 573 // ----------------------------------------------------------------------------
 574 // more debugging macros
 575 // ----------------------------------------------------------------------------
 576
 577 #ifdef __WXDEBUG__
 578     #ifndef WXDEBUG_NEW
 579         #define WXDEBUG_NEW new(__TFILE__,__LINE__)
 580     #endif
 581 #else // !__WXDEBUG__
 582     #define WXDEBUG_NEW new
 583 #endif
 584
 585 // Redefine new to be the debugging version. This doesn't work with all
 586 // compilers, in which case you need to use WXDEBUG_NEW explicitly if you wish
 587 // to use the debugging version.
 588
 589 #if defined(__WXDEBUG__) && wxUSE_GLOBAL_MEMORY_OPERATORS && wxUSE_DEBUG_NEW_ALWAYS
 590     #define new new(__TFILE__,__LINE__)
 591 #endif
 592
 593 #endif  // _WX_OBJECTH__
 594