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 #if 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 #if 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 ms_classInfo;            \
 164   static wxObject* wxCreateObject();          \
 165   virtual wxClassInfo *GetClassInfo() const   \
 166    { return &name::ms_classInfo; }
 167
 168 #define DECLARE_DYNAMIC_CLASS_NO_ASSIGN(name)   \
 169     DECLARE_NO_ASSIGN_CLASS(name)               \
 170     DECLARE_DYNAMIC_CLASS(name)
 171
 172 #define DECLARE_DYNAMIC_CLASS_NO_COPY(name)   \
 173     DECLARE_NO_COPY_CLASS(name)               \
 174     DECLARE_DYNAMIC_CLASS(name)
 175
 176 #define DECLARE_ABSTRACT_CLASS(name) DECLARE_DYNAMIC_CLASS(name)
 177 #define DECLARE_CLASS(name) DECLARE_DYNAMIC_CLASS(name)
 178
 179 // -----------------------------------
 180 // for concrete classes
 181 // -----------------------------------
 182
 183     // Single inheritance with one base class
 184
 185 #define IMPLEMENT_DYNAMIC_CLASS(name, basename)                 \
 186  wxObject* name::wxCreateObject()                             \
 187   { return new name; }                                          \
 188  wxClassInfo name::ms_classInfo(wxT(#name),                     \
 189             &basename::ms_classInfo, NULL,                      \
 190             (int) sizeof(name),                                 \
 191             (wxObjectConstructorFn) name::wxCreateObject);
 192
 193     // Multiple inheritance with two base classes
 194
 195 #define IMPLEMENT_DYNAMIC_CLASS2(name, basename1, basename2)    \
 196  wxObject* name::wxCreateObject()                             \
 197   { return new name; }                                          \
 198  wxClassInfo name::ms_classInfo(wxT(#name),                     \
 199             &basename1::ms_classInfo,                           \
 200             &basename2::ms_classInfo,                           \
 201             wxT(#basename2), (int) sizeof(name),                \
 202             (wxObjectConstructorFn) name::wxCreateObject);
 203
 204 // -----------------------------------
 205 // for abstract classes
 206 // -----------------------------------
 207
 208     // Single inheritance with one base class
 209
 210 #define IMPLEMENT_ABSTRACT_CLASS(name, basename)                \
 211  wxClassInfo name::ms_classInfo(wxT(#name),                     \
 212             &basename::ms_classInfo, NULL,                      \
 213             (int) sizeof(name), (wxObjectConstructorFn) 0);
 214
 215     // Multiple inheritance with two base classes
 216
 217 #define IMPLEMENT_ABSTRACT_CLASS2(name, basename1, basename2)   \
 218  wxClassInfo name::ms_classInfo(wxT(#name),                     \
 219             &basename1::ms_classInfo,                           \
 220             &basename2::ms_classInfo,                           \
 221             (int) sizeof(name),                                 \
 222             (wxObjectConstructorFn) 0);
 223
 224 #define IMPLEMENT_CLASS IMPLEMENT_ABSTRACT_CLASS
 225 #define IMPLEMENT_CLASS2 IMPLEMENT_ABSTRACT_CLASS2
 226
 227 #endif // !wxUSE_EXTENDED_RTTI
 228
 229
 230 // -----------------------------------
 231 // for pluggable classes
 232 // -----------------------------------
 233
 234     // NOTE: this should probably be the very first statement
 235     //       in the class declaration so wxPluginSentinel is
 236     //       the first member initialised and the last destroyed.
 237
 238 // _DECLARE_DL_SENTINEL(name) wxPluginSentinel m_pluginsentinel;
 239
 240 #if wxUSE_NESTED_CLASSES
 241
 242 #define _DECLARE_DL_SENTINEL(name, exportdecl)  \
 243 class exportdecl name##PluginSentinel {         \
 244 private:                                        \
 245     static const wxString sm_className;         \
 246 public:                                         \
 247     name##PluginSentinel();                     \
 248     ~name##PluginSentinel();                    \
 249 };                                              \
 250 name##PluginSentinel  m_pluginsentinel;
 251
 252 #define _IMPLEMENT_DL_SENTINEL(name)                                \
 253  const wxString name::name##PluginSentinel::sm_className(#name);    \
 254  name::name##PluginSentinel::name##PluginSentinel() {               \
 255     wxPluginLibrary *e = (wxPluginLibrary*) wxPluginLibrary::ms_classes.Get(#name);   \
 256     if( e != 0 ) { e->RefObj(); }                                      \
 257  }                                                                  \
 258  name::name##PluginSentinel::~name##PluginSentinel() {            \
 259     wxPluginLibrary *e = (wxPluginLibrary*) wxPluginLibrary::ms_classes.Get(#name);   \
 260     if( e != 0 ) { e->UnrefObj(); }                                 \
 261  }
 262 #else
 263
 264 #define _DECLARE_DL_SENTINEL(name)
 265 #define _IMPLEMENT_DL_SENTINEL(name)
 266
 267 #endif  // wxUSE_NESTED_CLASSES
 268
 269 #define DECLARE_PLUGGABLE_CLASS(name) \
 270  DECLARE_DYNAMIC_CLASS(name) _DECLARE_DL_SENTINEL(name, WXDLLEXPORT)
 271 #define DECLARE_ABSTRACT_PLUGGABLE_CLASS(name)  \
 272  DECLARE_ABSTRACT_CLASS(name) _DECLARE_DL_SENTINEL(name, WXDLLEXPORT)
 273
 274 #define DECLARE_USER_EXPORTED_PLUGGABLE_CLASS(name, usergoo) \
 275  DECLARE_DYNAMIC_CLASS(name) _DECLARE_DL_SENTINEL(name, usergoo)
 276 #define DECLARE_USER_EXPORTED_ABSTRACT_PLUGGABLE_CLASS(name, usergoo)  \
 277  DECLARE_ABSTRACT_CLASS(name) _DECLARE_DL_SENTINEL(name, usergoo)
 278
 279 #define IMPLEMENT_PLUGGABLE_CLASS(name, basename) \
 280  IMPLEMENT_DYNAMIC_CLASS(name, basename) _IMPLEMENT_DL_SENTINEL(name)
 281 #define IMPLEMENT_PLUGGABLE_CLASS2(name, basename1, basename2)  \
 282  IMPLEMENT_DYNAMIC_CLASS2(name, basename1, basename2) _IMPLEMENT_DL_SENTINEL(name)
 283 #define IMPLEMENT_ABSTRACT_PLUGGABLE_CLASS(name, basename) \
 284  IMPLEMENT_ABSTRACT_CLASS(name, basename) _IMPLEMENT_DL_SENTINEL(name)
 285 #define IMPLEMENT_ABSTRACT_PLUGGABLE_CLASS2(name, basename1, basename2)  \
 286  IMPLEMENT_ABSTRACT_CLASS2(name, basename1, basename2) _IMPLEMENT_DL_SENTINEL(name)
 287
 288 #define IMPLEMENT_USER_EXPORTED_PLUGGABLE_CLASS(name, basename) \
 289  IMPLEMENT_PLUGGABLE_CLASS(name, basename)
 290 #define IMPLEMENT_USER_EXPORTED_PLUGGABLE_CLASS2(name, basename1, basename2)  \
 291  IMPLEMENT_PLUGGABLE_CLASS2(name, basename1, basename2)
 292 #define IMPLEMENT_USER_EXPORTED_ABSTRACT_PLUGGABLE_CLASS(name, basename) \
 293  IMPLEMENT_ABSTRACT_PLUGGABLE_CLASS(name, basename)
 294 #define IMPLEMENT_USER_EXPORTED_ABSTRACT_PLUGGABLE_CLASS2(name, basename1, basename2)  \
 295  IMPLEMENT_ABSTRACT_PLUGGABLE_CLASS2(name, basename1, basename2)
 296
 297 #define CLASSINFO(name) (&name::ms_classInfo)
 298
 299 #else // !wxUSE_DYNAMIC_CLASSES
 300
 301     // No dynamic class system: so stub out the macros
 302
 303 #define DECLARE_DYNAMIC_CLASS(name)
 304 #define DECLARE_ABSTRACT_CLASS(name)
 305 #define DECLARE_CLASS(name)
 306 #define IMPLEMENT_DYNAMIC_CLASS(name, basename)
 307 #define IMPLEMENT_DYNAMIC_CLASS2(name, basename1, basename2)
 308 #define IMPLEMENT_ABSTRACT_CLASS(name, basename)
 309 #define IMPLEMENT_ABSTRACT_CLASS2(name, basename1, basename2)
 310 #define IMPLEMENT_CLASS IMPLEMENT_ABSTRACT_CLASS
 311 #define IMPLEMENT_CLASS2 IMPLEMENT_ABSTRACT_CLASS2
 312
 313 #define DECLARE_PLUGGABLE_CLASS(name)
 314 #define DECLARE_ABSTRACT_PLUGGABLE_CLASS(name)
 315 #define IMPLEMENT_PLUGGABLE_CLASS(name, basename)
 316 #define IMPLEMENT_PLUGGABLE_CLASS2(name, basename1, basename2)
 317 #define IMPLEMENT_ABSTRACT_PLUGGABLE_CLASS(name, basename)
 318 #define IMPLEMENT_ABSTRACT_PLUGGABLE_CLASS2(name, basename1, basename2)
 319
 320 #define DECLARE_USER_EXPORTED_PLUGGABLE_CLASS(name, usergoo)
 321 #define DECLARE_USER_EXPORTED_ABSTRACT_PLUGGABLE_CLASS(name, usergoo)
 322 #define IMPLEMENT_USER_EXPORTED_PLUGGABLE_CLASS(name, basename)
 323 #define IMPLEMENT_USER_EXPORTED_PLUGGABLE_CLASS2(name, basename1, basename2)
 324 #define IMPLEMENT_USER_EXPORTED_ABSTRACT_PLUGGABLE_CLASS(name, basename)
 325 #define IMPLEMENT_USER_EXPORTED_ABSTRACT_PLUGGABLE_CLASS2(name, basename1, basename2)
 326
 327 #endif // wxUSE_DYNAMIC_CLASSES
 328
 329 #define wxIS_KIND_OF(obj, className) obj->IsKindOf(&className::ms_classInfo)
 330
 331 // Just seems a bit nicer-looking (pretend it's not a macro)
 332 #define wxIsKindOf(obj, className) obj->IsKindOf(&className::ms_classInfo)
 333
 334 // to be replaced by dynamic_cast<> in the future
 335 #define wxDynamicCast(obj, className) \
 336     ((className *) wxCheckDynamicCast( \
 337         wx_const_cast(wxObject *, wx_static_cast(const wxObject *, \
 338           wx_const_cast(className *, wx_static_cast(const className *, obj)))), \
 339         &className::ms_classInfo))
 340
 341 // The 'this' pointer is always true, so use this version
 342 // to cast the this pointer and avoid compiler warnings.
 343 #define wxDynamicCastThis(className) \
 344  (IsKindOf(&className::ms_classInfo) ? (className *)(this) : (className *)0)
 345
 346 #ifdef __WXDEBUG__
 347 inline void* wxCheckCast(void *ptr)
 348 {
 349     wxASSERT_MSG( ptr, _T("wxStaticCast() used incorrectly") );
 350     return ptr;
 351 }
 352 #define wxStaticCast(obj, className) \
 353  ((className *)wxCheckCast(wxDynamicCast(obj, className)))
 354
 355 #else  // !__WXDEBUG__
 356 #define wxStaticCast(obj, className) ((className *)(obj))
 357
 358 #endif  // __WXDEBUG__
 359
 360 // ----------------------------------------------------------------------------
 361 // set up memory debugging macros
 362 // ----------------------------------------------------------------------------
 363
 364 /*
 365     Which new/delete operator variants do we want?
 366
 367     _WX_WANT_NEW_SIZET_WXCHAR_INT             = void *operator new (size_t size, wxChar *fileName = 0, int lineNum = 0)
 368     _WX_WANT_DELETE_VOID                      = void operator delete (void * buf)
 369     _WX_WANT_DELETE_VOID_CONSTCHAR_SIZET      = void operator delete (void *buf, const char *_fname, size_t _line)
 370     _WX_WANT_DELETE_VOID_WXCHAR_INT           = void operator delete(void *buf, wxChar*, int)
 371     _WX_WANT_ARRAY_NEW_SIZET_WXCHAR_INT       = void *operator new[] (size_t size, wxChar *fileName , int lineNum = 0)
 372     _WX_WANT_ARRAY_DELETE_VOID                = void operator delete[] (void *buf)
 373     _WX_WANT_ARRAY_DELETE_VOID_WXCHAR_INT     = void operator delete[] (void* buf, wxChar*, int )
 374 */
 375
 376 #if defined(__WXDEBUG__) && wxUSE_MEMORY_TRACING
 377
 378 // All compilers get this one
 379 #define _WX_WANT_NEW_SIZET_WXCHAR_INT
 380
 381 // Everyone except Visage gets the next one
 382 #ifndef __VISAGECPP__
 383     #define _WX_WANT_DELETE_VOID
 384 #endif
 385
 386 // Only visage gets this one under the correct circumstances
 387 #if defined(__VISAGECPP__) && __DEBUG_ALLOC__
 388     #define _WX_WANT_DELETE_VOID_CONSTCHAR_SIZET
 389 #endif
 390
 391 // Only VC++ 6.0 and CodeWarrior compilers get overloaded delete that matches new
 392 #if ( defined(__VISUALC__) && (__VISUALC__ >= 1200) ) || (defined(__MWERKS__) && (__MWERKS__ >= 0x2400))
 393     #define _WX_WANT_DELETE_VOID_WXCHAR_INT
 394 #endif
 395
 396 // Now see who (if anyone) gets the array memory operators
 397 #if wxUSE_ARRAY_MEMORY_OPERATORS
 398
 399     // Everyone except Visual C++ (cause problems for VC++ - crashes)
 400     #if !defined(__VISUALC__)
 401         #define _WX_WANT_ARRAY_NEW_SIZET_WXCHAR_INT
 402     #endif
 403
 404     // Everyone except Visual C++ (cause problems for VC++ - crashes)
 405     #if !defined(__VISUALC__)
 406         #define _WX_WANT_ARRAY_DELETE_VOID
 407     #endif
 408
 409     // Only CodeWarrior 6 or higher
 410     #if defined(__MWERKS__) && (__MWERKS__ >= 0x2400)
 411         #define _WX_WANT_ARRAY_DELETE_VOID_WXCHAR_INT
 412     #endif
 413
 414 #endif // wxUSE_ARRAY_MEMORY_OPERATORS
 415
 416 #endif // WXDEBUG && wxUSE_MEMORY_TRACING
 417
 418 // ----------------------------------------------------------------------------
 419 // wxObject: the root class of wxWidgets object hierarchy
 420 // ----------------------------------------------------------------------------
 421
 422 class WXDLLIMPEXP_BASE wxObject
 423 {
 424     DECLARE_ABSTRACT_CLASS(wxObject)
 425
 426 private:
 427     void InitFrom(const wxObject& other);
 428
 429 public:
 430     wxObject() { m_refData = NULL; }
 431     virtual ~wxObject() { UnRef(); }
 432
 433     wxObject(const wxObject& other)
 434         {
 435             InitFrom(other);
 436         }
 437
 438     wxObject& operator=(const wxObject& other)
 439     {
 440         if ( this != &other )
 441         {
 442             UnRef();
 443             InitFrom(other);
 444         }
 445         return *this;
 446     }
 447
 448     bool IsKindOf(wxClassInfo *info) const;
 449
 450
 451     // Turn on the correct set of new and delete operators
 452
 453 #ifdef _WX_WANT_NEW_SIZET_WXCHAR_INT
 454     void *operator new ( size_t size, const wxChar *fileName = NULL, int lineNum = 0 );
 455 #endif
 456
 457 #ifdef _WX_WANT_DELETE_VOID
 458     void operator delete ( void * buf );
 459 #endif
 460
 461 #ifdef _WX_WANT_DELETE_VOID_CONSTCHAR_SIZET
 462     void operator delete ( void *buf, const char *_fname, size_t _line );
 463 #endif
 464
 465 #ifdef _WX_WANT_DELETE_VOID_WXCHAR_INT
 466     void operator delete ( void *buf, const wxChar*, int );
 467 #endif
 468
 469 #ifdef _WX_WANT_ARRAY_NEW_SIZET_WXCHAR_INT
 470     void *operator new[] ( size_t size, const wxChar *fileName = NULL, int lineNum = 0 );
 471 #endif
 472
 473 #ifdef _WX_WANT_ARRAY_DELETE_VOID
 474     void operator delete[] ( void *buf );
 475 #endif
 476
 477 #ifdef _WX_WANT_ARRAY_DELETE_VOID_WXCHAR_INT
 478     void operator delete[] (void* buf, const wxChar*, int );
 479 #endif
 480
 481     // ref counted data handling methods
 482
 483     // get/set
 484     wxObjectRefData *GetRefData() const { return m_refData; }
 485     void SetRefData(wxObjectRefData *data) { m_refData = data; }
 486
 487     // make a 'clone' of the object
 488     void Ref(const wxObject& clone);
 489
 490     // destroy a reference
 491     void UnRef();
 492
 493 protected:
 494     // ensure that our data is not shared with anybody else: if we have no
 495     // data, it is created using CreateRefData() below, if we have shared data
 496     // it is copied using CloneRefData(), otherwise nothing is done
 497     void AllocExclusive();
 498
 499     // both methods must be implemented if Unshare() is used, not pure virtual
 500     // only because of the backwards compatibility reasons
 501
 502     // create a new m_refData
 503     virtual wxObjectRefData *CreateRefData() const;
 504
 505     // create a new m_refData initialized with the given one
 506     virtual wxObjectRefData *CloneRefData(const wxObjectRefData *data) const;
 507
 508     wxObjectRefData *m_refData;
 509 };
 510
 511 // ----------------------------------------------------------------------------
 512 // wxObjectRefData: ref counted data meant to be stored in wxObject
 513 // ----------------------------------------------------------------------------
 514
 515 class WXDLLIMPEXP_BASE wxObjectRefData
 516 {
 517     friend class WXDLLIMPEXP_BASE wxObject;
 518
 519 public:
 520     wxObjectRefData() : m_count(1) { }
 521     virtual ~wxObjectRefData() { }
 522
 523     int GetRefCount() const { return m_count; }
 524
 525 private:
 526     int m_count;
 527 };
 528
 529
 530 inline wxObject *wxCheckDynamicCast(wxObject *obj, wxClassInfo *classInfo)
 531 {
 532     return obj && obj->GetClassInfo()->IsKindOf(classInfo) ? obj : NULL;
 533 }
 534
 535 #if wxUSE_EXTENDED_RTTI
 536 class WXDLLIMPEXP_BASE wxDynamicObject : public wxObject
 537 {
 538     friend class WXDLLIMPEXP_BASE wxDynamicClassInfo ;
 539 public:
 540     // instantiates this object with an instance of its superclass
 541     wxDynamicObject(wxObject* superClassInstance, const wxDynamicClassInfo *info) ;
 542     ~wxDynamicObject();
 543
 544     void SetProperty (const wxChar *propertyName, const wxxVariant &value);
 545     wxxVariant GetProperty (const wxChar *propertyName) const ;
 546
 547     // get the runtime identity of this object
 548     wxClassInfo *GetClassInfo() const
 549     {
 550                 return wx_const_cast(wxClassInfo *, m_classInfo);
 551     }
 552
 553     wxObject* GetSuperClassInstance() const
 554     {
 555         return m_superClassInstance ;
 556     }
 557 private :
 558     // removes an existing runtime-property
 559     void RemoveProperty( const wxChar *propertyName ) ;
 560
 561     // renames an existing runtime-property
 562     void RenameProperty( const wxChar *oldPropertyName , const wxChar *newPropertyName ) ;
 563
 564     wxObject *m_superClassInstance ;
 565     const wxDynamicClassInfo *m_classInfo;
 566     struct wxDynamicObjectInternal;
 567     wxDynamicObjectInternal *m_data;
 568 };
 569 #endif
 570
 571 // ----------------------------------------------------------------------------
 572 // more debugging macros
 573 // ----------------------------------------------------------------------------
 574
 575 #ifdef __WXDEBUG__
 576     #ifndef WXDEBUG_NEW
 577         #define WXDEBUG_NEW new(__TFILE__,__LINE__)
 578     #endif
 579 #else // !__WXDEBUG__
 580     #define WXDEBUG_NEW new
 581 #endif
 582
 583 // Redefine new to be the debugging version. This doesn't work with all
 584 // compilers, in which case you need to use WXDEBUG_NEW explicitly if you wish
 585 // to use the debugging version.
 586
 587 #if defined(__WXDEBUG__) && wxUSE_GLOBAL_MEMORY_OPERATORS && wxUSE_DEBUG_NEW_ALWAYS
 588     #define new new(__TFILE__,__LINE__)
 589 #endif
 590
 591 #endif  // _WX_OBJECTH__
 592