wxPython/src/helpers.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        helpers.cpp
   3 // Purpose:     Helper functions/classes for the wxPython extension module
   4 //
   5 // Author:      Robin Dunn
   6 //
   7 // Created:     7/1/97
   8 // RCS-ID:      $Id$
   9 // Copyright:   (c) 1998 by Total Control Software
  10 // Licence:     wxWindows license
  11 /////////////////////////////////////////////////////////////////////////////
  12
  13 #include <stdio.h>  // get the correct definition of NULL
  14
  15 #undef DEBUG
  16 #include <Python.h>
  17 #include "helpers.h"
  18
  19 #ifdef __WXMSW__
  20 #include <wx/msw/private.h>
  21 #include <wx/msw/winundef.h>
  22 #include <wx/msw/msvcrt.h>
  23 #endif
  24
  25 #ifdef __WXGTK__
  26 #include <gtk/gtk.h>
  27 #include <gdk/gdkprivate.h>
  28 #include <wx/gtk/win_gtk.h>
  29 #endif
  30
  31
  32 //----------------------------------------------------------------------
  33
  34 #ifdef __WXGTK__
  35 int  WXDLLEXPORT wxEntryStart( int& argc, char** argv );
  36 #else
  37 int  WXDLLEXPORT wxEntryStart( int argc, char** argv );
  38 #endif
  39 int  WXDLLEXPORT wxEntryInitGui();
  40 void WXDLLEXPORT wxEntryCleanup();
  41
  42 wxPyApp* wxPythonApp = NULL;  // Global instance of application object
  43
  44
  45 #ifdef WXP_WITH_THREAD
  46 struct wxPyThreadState {
  47     unsigned long  tid;
  48     PyThreadState* tstate;
  49
  50     wxPyThreadState(unsigned long _tid=0, PyThreadState* _tstate=NULL)
  51         : tid(_tid), tstate(_tstate) {}
  52 };
  53
  54 #include <wx/dynarray.h>
  55 WX_DECLARE_OBJARRAY(wxPyThreadState, wxPyThreadStateArray);
  56 #include <wx/arrimpl.cpp>
  57 WX_DEFINE_OBJARRAY(wxPyThreadStateArray);
  58
  59 wxPyThreadStateArray* wxPyTStates = NULL;
  60 wxMutex*              wxPyTMutex = NULL;
  61 #endif
  62
  63
  64 #ifdef __WXMSW__             // If building for win32...
  65 //----------------------------------------------------------------------
  66 // This gets run when the DLL is loaded.  We just need to save a handle.
  67 //----------------------------------------------------------------------
  68
  69 BOOL WINAPI DllMain(
  70     HINSTANCE   hinstDLL,    // handle to DLL module
  71     DWORD       fdwReason,   // reason for calling function
  72     LPVOID      lpvReserved  // reserved
  73    )
  74 {
  75     wxSetInstance(hinstDLL);
  76     return 1;
  77 }
  78 #endif
  79
  80 //----------------------------------------------------------------------
  81 // Classes for implementing the wxp main application shell.
  82 //----------------------------------------------------------------------
  83
  84
  85 wxPyApp::wxPyApp() {
  86 //    printf("**** ctor\n");
  87 }
  88
  89 wxPyApp::~wxPyApp() {
  90 //    printf("**** dtor\n");
  91 }
  92
  93
  94 // This one isn't acutally called...  See __wxStart()
  95 bool wxPyApp::OnInit() {
  96     return FALSE;
  97 }
  98
  99
 100 int  wxPyApp::MainLoop() {
 101     int retval = 0;
 102
 103     DeletePendingObjects();
 104     bool initialized = wxTopLevelWindows.GetCount() != 0;
 105 #ifdef __WXGTK__
 106     m_initialized = initialized;
 107 #endif
 108
 109     if (initialized) {
 110         retval = wxApp::MainLoop();
 111         OnExit();
 112     }
 113     return retval;
 114 }
 115
 116
 117
 118 //---------------------------------------------------------------------
 119 //----------------------------------------------------------------------
 120
 121
 122 // This is where we pick up the first part of the wxEntry functionality...
 123 // The rest is in __wxStart and  __wxCleanup.  This function is called when
 124 // wxcmodule is imported.  (Before there is a wxApp object.)
 125 void __wxPreStart()
 126 {
 127
 128 #ifdef __WXMSW__
 129 //    wxCrtSetDbgFlag(_CRTDBG_LEAK_CHECK_DF);
 130 #endif
 131
 132 #ifdef WXP_WITH_THREAD
 133     PyEval_InitThreads();
 134     wxPyTStates = new wxPyThreadStateArray;
 135     wxPyTMutex = new wxMutex;
 136 #endif
 137
 138     // Bail out if there is already windows created.  This means that the
 139     // toolkit has already been initialized, as in embedding wxPython in
 140     // a C++ wxWindows app.
 141     if (wxTopLevelWindows.Number() > 0)
 142         return;
 143
 144
 145     int argc = 0;
 146     char** argv = NULL;
 147     PyObject* sysargv = PySys_GetObject("argv");
 148     if (sysargv != NULL) {
 149         argc = PyList_Size(sysargv);
 150         argv = new char*[argc+1];
 151         int x;
 152         for(x=0; x<argc; x++)
 153             argv[x] = copystring(PyString_AsString(PyList_GetItem(sysargv, x)));
 154         argv[argc] = NULL;
 155     }
 156
 157     wxEntryStart(argc, argv);
 158     delete [] argv;
 159 }
 160
 161
 162
 163 // Start the user application, user App's OnInit method is a parameter here
 164 PyObject* __wxStart(PyObject* /* self */, PyObject* args)
 165 {
 166     PyObject*   onInitFunc = NULL;
 167     PyObject*   arglist;
 168     PyObject*   result;
 169     long        bResult;
 170
 171     if (!PyArg_ParseTuple(args, "O", &onInitFunc))
 172         return NULL;
 173
 174 #if 0  // Try it out without this check, see how it does...
 175     if (wxTopLevelWindows.Number() > 0) {
 176         PyErr_SetString(PyExc_TypeError, "Only 1 wxApp per process!");
 177         return NULL;
 178     }
 179 #endif
 180
 181     // This is the next part of the wxEntry functionality...
 182     int argc = 0;
 183     char** argv = NULL;
 184     PyObject* sysargv = PySys_GetObject("argv");
 185     if (sysargv != NULL) {
 186         argc = PyList_Size(sysargv);
 187         argv = new char*[argc+1];
 188         int x;
 189         for(x=0; x<argc; x++)
 190             argv[x] = copystring(PyString_AsString(PyList_GetItem(sysargv, x)));
 191         argv[argc] = NULL;
 192     }
 193     wxPythonApp->argc = argc;
 194     wxPythonApp->argv = argv;
 195
 196     wxEntryInitGui();
 197
 198     // Call the Python App's OnInit function
 199     arglist = PyTuple_New(0);
 200     result = PyEval_CallObject(onInitFunc, arglist);
 201     if (!result) {      // an exception was raised.
 202         return NULL;
 203     }
 204
 205     if (! PyInt_Check(result)) {
 206         PyErr_SetString(PyExc_TypeError, "OnInit should return a boolean value");
 207         return NULL;
 208     }
 209     bResult = PyInt_AS_LONG(result);
 210     if (! bResult) {
 211         PyErr_SetString(PyExc_SystemExit, "OnInit returned FALSE, exiting...");
 212         return NULL;
 213     }
 214
 215 #ifdef __WXGTK__
 216     wxTheApp->m_initialized = (wxTopLevelWindows.GetCount() > 0);
 217 #endif
 218
 219     Py_INCREF(Py_None);
 220     return Py_None;
 221 }
 222
 223
 224 void __wxCleanup() {
 225     wxEntryCleanup();
 226 #ifdef WXP_WITH_THREAD
 227     delete wxPyTMutex;
 228     wxPyTMutex = NULL;
 229     wxPyTStates->Empty();
 230     delete wxPyTStates;
 231     wxPyTStates = NULL;
 232 #endif
 233 }
 234
 235
 236
 237 static PyObject* wxPython_dict = NULL;
 238 static PyObject* wxPyPtrTypeMap = NULL;
 239
 240 PyObject* __wxSetDictionary(PyObject* /* self */, PyObject* args)
 241 {
 242
 243     if (!PyArg_ParseTuple(args, "O", &wxPython_dict))
 244         return NULL;
 245
 246     if (!PyDict_Check(wxPython_dict)) {
 247         PyErr_SetString(PyExc_TypeError, "_wxSetDictionary must have dictionary object!");
 248         return NULL;
 249     }
 250
 251     if (! wxPyPtrTypeMap)
 252         wxPyPtrTypeMap = PyDict_New();
 253     PyDict_SetItemString(wxPython_dict, "__wxPyPtrTypeMap", wxPyPtrTypeMap);
 254
 255
 256 #ifdef __WXMOTIF__
 257 #define wxPlatform "__WXMOTIF__"
 258 #endif
 259 #ifdef __WXQT__
 260 #define wxPlatform "__WXQT__"
 261 #endif
 262 #ifdef __WXGTK__
 263 #define wxPlatform "__WXGTK__"
 264 #endif
 265 #if defined(__WIN32__) || defined(__WXMSW__)
 266 #define wxPlatform "__WXMSW__"
 267 #endif
 268 #ifdef __WXMAC__
 269 #define wxPlatform "__WXMAC__"
 270 #endif
 271
 272     PyDict_SetItemString(wxPython_dict, "wxPlatform", PyString_FromString(wxPlatform));
 273
 274     Py_INCREF(Py_None);
 275     return Py_None;
 276 }
 277
 278
 279 //---------------------------------------------------------------------------
 280 // Stuff used by OOR to find the right wxPython class type to return and to
 281 // build it.
 282
 283
 284 // The pointer type map is used when the "pointer" type name generated by SWIG
 285 // is not the same as the shadow class name, for example wxPyTreeCtrl
 286 // vs. wxTreeCtrl.  It needs to be referenced in Python as well as from C++,
 287 // so we'll just make it a Python dictionary in the wx module's namespace.
 288 void wxPyPtrTypeMap_Add(const char* commonName, const char* ptrName) {
 289     if (! wxPyPtrTypeMap)
 290         wxPyPtrTypeMap = PyDict_New();
 291     PyDict_SetItemString(wxPyPtrTypeMap,
 292                          (char*)commonName,
 293                          PyString_FromString((char*)ptrName));
 294 }
 295
 296
 297
 298 PyObject* wxPyClassExists(const char* className) {
 299
 300     if (!className)
 301         return NULL;
 302
 303     char    buff[64];               // should always be big enough...
 304
 305     sprintf(buff, "%sPtr", className);
 306     PyObject* classobj = PyDict_GetItemString(wxPython_dict, buff);
 307
 308     return classobj;  // returns NULL if not found
 309 }
 310
 311
 312 PyObject*  wxPyMake_wxObject(wxObject* source, bool checkEvtHandler) {
 313     PyObject* target = NULL;
 314     bool      isEvtHandler = FALSE;
 315
 316     if (source) {
 317         // If it's derived from wxEvtHandler then there may
 318         // already be a pointer to a Python object that we can use
 319         // in the OOR data.
 320         if (checkEvtHandler && wxIsKindOf(source, wxEvtHandler)) {
 321             isEvtHandler = TRUE;
 322             wxEvtHandler* eh = (wxEvtHandler*)source;
 323             wxPyClientData* data = (wxPyClientData*)eh->GetClientObject();
 324             if (data) {
 325                 target = data->m_obj;
 326                 Py_INCREF(target);
 327             }
 328         }
 329
 330         if (! target) {
 331             // Otherwise make it the old fashioned way by making a
 332             // new shadow object and putting this pointer in it.
 333             wxClassInfo* info = source->GetClassInfo();
 334             wxChar*      name = (wxChar*)info->GetClassName();
 335             PyObject*    klass = wxPyClassExists(name);
 336             while (info && !klass) {
 337                 name = (wxChar*)info->GetBaseClassName1();
 338                 info = wxClassInfo::FindClass(name);
 339                 klass = wxPyClassExists(name);
 340             }
 341             if (info) {
 342                 target = wxPyConstructObject(source, name, klass, FALSE);
 343                 if (target && isEvtHandler)
 344                     ((wxEvtHandler*)source)->SetClientObject(new wxPyClientData(target));
 345             } else {
 346                 wxString msg("wxPython class not found for ");
 347                 msg += source->GetClassInfo()->GetClassName();
 348                 PyErr_SetString(PyExc_NameError, msg.c_str());
 349                 target = NULL;
 350             }
 351         }
 352     } else {  // source was NULL so return None.
 353         Py_INCREF(Py_None); target = Py_None;
 354     }
 355     return target;
 356 }
 357
 358
 359 PyObject*  wxPyMake_wxSizer(wxSizer* source) {
 360     PyObject* target = NULL;
 361
 362     if (source && wxIsKindOf(source, wxSizer)) {
 363         // If it's derived from wxSizer then there may
 364         // already be a pointer to a Python object that we can use
 365         // in the OOR data.
 366         wxSizer* sz = (wxSizer*)source;
 367         wxPyClientData* data = (wxPyClientData*)sz->GetClientObject();
 368         if (data) {
 369             target = data->m_obj;
 370             Py_INCREF(target);
 371         }
 372     }
 373     if (! target) {
 374         target = wxPyMake_wxObject(source, FALSE);
 375         if (target != Py_None)
 376             ((wxSizer*)source)->SetClientObject(new wxPyClientData(target));
 377     }
 378     return target;
 379 }
 380
 381
 382
 383 //---------------------------------------------------------------------------
 384
 385 PyObject* wxPyConstructObject(void* ptr,
 386                               const char* className,
 387                               PyObject* klass,
 388                               int setThisOwn) {
 389
 390     PyObject* obj;
 391     PyObject* arg;
 392     PyObject* item;
 393     char      swigptr[64];      // should always be big enough...
 394     char      buff[64];
 395
 396     if ((item = PyDict_GetItemString(wxPyPtrTypeMap, (char*)className)) != NULL) {
 397         className = PyString_AsString(item);
 398     }
 399     sprintf(buff, "_%s_p", className);
 400     SWIG_MakePtr(swigptr, ptr, buff);
 401
 402     arg = Py_BuildValue("(s)", swigptr);
 403     obj = PyInstance_New(klass, arg, NULL);
 404     Py_DECREF(arg);
 405
 406     if (setThisOwn) {
 407         PyObject* one = PyInt_FromLong(1);
 408         PyObject_SetAttrString(obj, "thisown", one);
 409         Py_DECREF(one);
 410     }
 411
 412     return obj;
 413 }
 414
 415
 416 PyObject* wxPyConstructObject(void* ptr,
 417                               const char* className,
 418                               int setThisOwn) {
 419     PyObject* obj;
 420
 421     if (!ptr) {
 422         Py_INCREF(Py_None);
 423         return Py_None;
 424     }
 425
 426     char    buff[64];               // should always be big enough...
 427     sprintf(buff, "%sPtr", className);
 428
 429     wxASSERT_MSG(wxPython_dict, "wxPython_dict is not set yet!!");
 430
 431     PyObject* classobj = PyDict_GetItemString(wxPython_dict, buff);
 432     if (! classobj) {
 433         char temp[128];
 434         sprintf(temp,
 435                 "*** Unknown class name %s, tell Robin about it please ***",
 436                 buff);
 437         obj = PyString_FromString(temp);
 438         return obj;
 439     }
 440
 441     return wxPyConstructObject(ptr, className, classobj, setThisOwn);
 442 }
 443
 444 //---------------------------------------------------------------------------
 445
 446
 447 #ifdef WXP_WITH_THREAD
 448 inline
 449 unsigned long wxPyGetCurrentThreadId() {
 450     return wxThread::GetCurrentId();
 451 }
 452
 453
 454 static
 455 PyThreadState* wxPyGetThreadState() {
 456     unsigned long ctid = wxPyGetCurrentThreadId();
 457     PyThreadState* tstate = NULL;
 458
 459     wxPyTMutex->Lock();
 460     for(size_t i=0; i < wxPyTStates->GetCount(); i++) {
 461         wxPyThreadState& info = wxPyTStates->Item(i);
 462         if (info.tid == ctid) {
 463             tstate = info.tstate;
 464             break;
 465         }
 466     }
 467     wxPyTMutex->Unlock();
 468     wxASSERT_MSG(tstate, "PyThreadState should not be NULL!");
 469     return tstate;
 470 }
 471
 472 static
 473 void wxPySaveThreadState(PyThreadState* tstate) {
 474     unsigned long ctid = wxPyGetCurrentThreadId();
 475     wxPyTMutex->Lock();
 476     for(size_t i=0; i < wxPyTStates->GetCount(); i++) {
 477         wxPyThreadState& info = wxPyTStates->Item(i);
 478         if (info.tid == ctid) {
 479             info.tstate = tstate;
 480             wxPyTMutex->Unlock();
 481             return;
 482         }
 483     }
 484     // not found, so add it...
 485     wxPyTStates->Add(new wxPyThreadState(ctid, tstate));
 486     wxPyTMutex->Unlock();
 487 }
 488
 489 #endif
 490
 491
 492 // Calls from Python to wxWindows code are wrapped in calls to these
 493 // functions:
 494
 495 PyThreadState* wxPyBeginAllowThreads() {
 496 #ifdef WXP_WITH_THREAD
 497     PyThreadState* saved = PyEval_SaveThread();  // Py_BEGIN_ALLOW_THREADS;
 498     wxPySaveThreadState(saved);
 499     return saved;
 500 #else
 501     return NULL;
 502 #endif
 503 }
 504
 505 void wxPyEndAllowThreads(PyThreadState* saved) {
 506 #ifdef WXP_WITH_THREAD
 507     PyEval_RestoreThread(saved);   // Py_END_ALLOW_THREADS;
 508 #endif
 509 }
 510
 511
 512
 513 // Calls from wxWindows back to Python code, or even any PyObject
 514 // manipulations, PyDECREF's and etc. are wrapped in calls to these functions:
 515
 516 void wxPyBeginBlockThreads() {
 517 #ifdef WXP_WITH_THREAD
 518     PyThreadState* tstate = wxPyGetThreadState();
 519     PyEval_RestoreThread(tstate);
 520 #endif
 521 }
 522
 523
 524 void wxPyEndBlockThreads() {
 525 #ifdef WXP_WITH_THREAD
 526     PyThreadState* tstate = PyEval_SaveThread();
 527     // Is there any need to save it again?
 528 #endif
 529 }
 530
 531
 532 //---------------------------------------------------------------------------
 533
 534 IMPLEMENT_ABSTRACT_CLASS(wxPyCallback, wxObject);
 535
 536 wxPyCallback::wxPyCallback(PyObject* func) {
 537     m_func = func;
 538     Py_INCREF(m_func);
 539 }
 540
 541 wxPyCallback::wxPyCallback(const wxPyCallback& other) {
 542     m_func = other.m_func;
 543     Py_INCREF(m_func);
 544 }
 545
 546 wxPyCallback::~wxPyCallback() {
 547     wxPyBeginBlockThreads();
 548     Py_DECREF(m_func);
 549     wxPyEndBlockThreads();
 550 }
 551
 552
 553
 554 // This function is used for all events destined for Python event handlers.
 555 void wxPyCallback::EventThunker(wxEvent& event) {
 556     wxPyCallback*   cb = (wxPyCallback*)event.m_callbackUserData;
 557     PyObject*       func = cb->m_func;
 558     PyObject*       result;
 559     PyObject*       arg;
 560     PyObject*       tuple;
 561
 562
 563     wxPyBeginBlockThreads();
 564     wxString className = event.GetClassInfo()->GetClassName();
 565
 566     if (className == "wxPyEvent")
 567         arg = ((wxPyEvent*)&event)->GetSelf();
 568     else if (className == "wxPyCommandEvent")
 569         arg = ((wxPyCommandEvent*)&event)->GetSelf();
 570     else
 571         arg = wxPyConstructObject((void*)&event, className);
 572
 573     tuple = PyTuple_New(1);
 574     PyTuple_SET_ITEM(tuple, 0, arg);
 575     result = PyEval_CallObject(func, tuple);
 576     Py_DECREF(tuple);
 577     if (result) {
 578         Py_DECREF(result);
 579         PyErr_Clear();       // Just in case...
 580     } else {
 581         PyErr_Print();
 582     }
 583     wxPyEndBlockThreads();
 584 }
 585
 586
 587 //----------------------------------------------------------------------
 588
 589 wxPyCallbackHelper::wxPyCallbackHelper(const wxPyCallbackHelper& other) {
 590       m_lastFound = NULL;
 591       m_self = other.m_self;
 592       m_class = other.m_class;
 593       if (m_self) {
 594           Py_INCREF(m_self);
 595           Py_INCREF(m_class);
 596       }
 597 }
 598
 599
 600 void wxPyCallbackHelper::setSelf(PyObject* self, PyObject* klass, int incref) {
 601     m_self = self;
 602     m_class = klass;
 603     m_incRef = incref;
 604     if (incref) {
 605         Py_INCREF(m_self);
 606         Py_INCREF(m_class);
 607     }
 608 }
 609
 610
 611 #if PYTHON_API_VERSION >= 1011
 612
 613 // Prior to Python 2.2 PyMethod_GetClass returned the class object
 614 // in which the method was defined.  Starting with 2.2 it returns
 615 // "class that asked for the method" which seems totally bogus to me
 616 // but apprently if fixes some obscure problem waiting to happen in
 617 // Python.  Since the API was not documented Guido and the gang felt
 618 // safe in changing it.  Needless to say that totally screwed up the
 619 // logic below in wxPyCallbackHelper::findCallback, hence this icky
 620 // code to find the class where the method is actuallt defined...
 621
 622 static
 623 PyObject* PyFindClassWithAttr(PyObject *klass, PyObject *name)
 624 {
 625     int i, n;
 626
 627     if (PyType_Check(klass)) {      // new style classes
 628         // This code is borrowed/adapted from _PyType_Lookup in typeobject.c
 629         // (TODO: This part is not tested yet, so I'm not sure it is correct...)
 630         PyTypeObject* type = (PyTypeObject*)klass;
 631         PyObject *mro, *res, *base, *dict;
 632         /* Look in tp_dict of types in MRO */
 633         mro = type->tp_mro;
 634         assert(PyTuple_Check(mro));
 635         n = PyTuple_GET_SIZE(mro);
 636         for (i = 0; i < n; i++) {
 637             base = PyTuple_GET_ITEM(mro, i);
 638             if (PyClass_Check(base))
 639                 dict = ((PyClassObject *)base)->cl_dict;
 640             else {
 641                 assert(PyType_Check(base));
 642                 dict = ((PyTypeObject *)base)->tp_dict;
 643             }
 644             assert(dict && PyDict_Check(dict));
 645             res = PyDict_GetItem(dict, name);
 646             if (res != NULL)
 647                 return base;
 648         }
 649         return NULL;
 650     }
 651
 652     else if (PyClass_Check(klass)) { // old style classes
 653         // This code is borrowed/adapted from class_lookup in classobject.c
 654         PyClassObject* cp = (PyClassObject*)klass;
 655         PyObject *value = PyDict_GetItem(cp->cl_dict, name);
 656         if (value != NULL) {
 657             return (PyObject*)cp;
 658         }
 659         n = PyTuple_Size(cp->cl_bases);
 660         for (i = 0; i < n; i++) {
 661             PyObject* base = PyTuple_GetItem(cp->cl_bases, i);
 662             PyObject *v = PyFindClassWithAttr(base, name);
 663             if (v != NULL)
 664                 return v;
 665         }
 666         return NULL;
 667     }
 668 }
 669 #endif
 670
 671
 672 static
 673 PyObject* PyMethod_GetDefiningClass(PyObject* method, const char* name)
 674 {
 675     PyObject* mgc = PyMethod_GET_CLASS(method);
 676
 677 #if PYTHON_API_VERSION <= 1010    // prior to Python 2.2, the easy way
 678     return mgc;
 679 #else                             // 2.2 and after, the hard way...
 680
 681     PyObject* nameo = PyString_FromString(name);
 682     PyObject* klass = PyFindClassWithAttr(mgc, nameo);
 683     Py_DECREF(nameo);
 684     return klass;
 685 #endif
 686 }
 687
 688
 689
 690 bool wxPyCallbackHelper::findCallback(const char* name) const {
 691     wxPyCallbackHelper* self = (wxPyCallbackHelper*)this; // cast away const
 692     self->m_lastFound = NULL;
 693
 694     // If the object (m_self) has an attibute of the given name...
 695     if (m_self && PyObject_HasAttrString(m_self, (char*)name)) {
 696         PyObject *method, *klass;
 697         method = PyObject_GetAttrString(m_self, (char*)name);
 698
 699         // ...and if that attribute is a method, and if that method's class is
 700         // not from a base class...
 701         if (PyMethod_Check(method) &&
 702             (klass = PyMethod_GetDefiningClass(method, (char*)name)) != NULL &&
 703             ((klass == m_class) || PyClass_IsSubclass(klass, m_class))) {
 704
 705             // ...then we'll save a pointer to the method so callCallback can call it.
 706             self->m_lastFound = method;
 707         }
 708         else {
 709             Py_DECREF(method);
 710         }
 711     }
 712     return m_lastFound != NULL;
 713 }
 714
 715
 716 int wxPyCallbackHelper::callCallback(PyObject* argTuple) const {
 717     PyObject*   result;
 718     int         retval = FALSE;
 719
 720     result = callCallbackObj(argTuple);
 721     if (result) {                       // Assumes an integer return type...
 722         retval = PyInt_AsLong(result);
 723         Py_DECREF(result);
 724         PyErr_Clear();                  // forget about it if it's not...
 725     }
 726     return retval;
 727 }
 728
 729 // Invoke the Python callable object, returning the raw PyObject return
 730 // value.  Caller should DECREF the return value and also call PyEval_SaveThread.
 731 PyObject* wxPyCallbackHelper::callCallbackObj(PyObject* argTuple) const {
 732     PyObject* result;
 733
 734     // Save a copy of the pointer in case the callback generates another
 735     // callback.  In that case m_lastFound will have a different value when
 736     // it gets back here...
 737     PyObject* method = m_lastFound;
 738
 739     result = PyEval_CallObject(method, argTuple);
 740     Py_DECREF(argTuple);
 741     Py_DECREF(method);
 742     if (!result) {
 743         PyErr_Print();
 744     }
 745     return result;
 746 }
 747
 748
 749 void wxPyCBH_setCallbackInfo(wxPyCallbackHelper& cbh, PyObject* self, PyObject* klass, int incref) {
 750     cbh.setSelf(self, klass, incref);
 751 }
 752
 753 bool wxPyCBH_findCallback(const wxPyCallbackHelper& cbh, const char* name) {
 754     return cbh.findCallback(name);
 755 }
 756
 757 int  wxPyCBH_callCallback(const wxPyCallbackHelper& cbh, PyObject* argTuple) {
 758     return cbh.callCallback(argTuple);
 759 }
 760
 761 PyObject* wxPyCBH_callCallbackObj(const wxPyCallbackHelper& cbh, PyObject* argTuple) {
 762     return cbh.callCallbackObj(argTuple);
 763 }
 764
 765
 766 void wxPyCBH_delete(wxPyCallbackHelper* cbh) {
 767     if (cbh->m_incRef) {
 768         wxPyBeginBlockThreads();
 769         Py_XDECREF(cbh->m_self);
 770         Py_XDECREF(cbh->m_class);
 771         wxPyEndBlockThreads();
 772     }
 773 }
 774
 775 //---------------------------------------------------------------------------
 776 //---------------------------------------------------------------------------
 777 // These event classes can be derived from in Python and passed through the event
 778 // system without losing anything.  They do this by keeping a reference to
 779 // themselves and some special case handling in wxPyCallback::EventThunker.
 780
 781
 782 wxPyEvtSelfRef::wxPyEvtSelfRef() {
 783     //m_self = Py_None;         // **** We don't do normal ref counting to prevent
 784     //Py_INCREF(m_self);        //      circular loops...
 785     m_cloned = FALSE;
 786 }
 787
 788 wxPyEvtSelfRef::~wxPyEvtSelfRef() {
 789     wxPyBeginBlockThreads();
 790     if (m_cloned)
 791         Py_DECREF(m_self);
 792     wxPyEndBlockThreads();
 793 }
 794
 795 void wxPyEvtSelfRef::SetSelf(PyObject* self, bool clone) {
 796     wxPyBeginBlockThreads();
 797     if (m_cloned)
 798         Py_DECREF(m_self);
 799     m_self = self;
 800     if (clone) {
 801         Py_INCREF(m_self);
 802         m_cloned = TRUE;
 803     }
 804     wxPyEndBlockThreads();
 805 }
 806
 807 PyObject* wxPyEvtSelfRef::GetSelf() const {
 808     Py_INCREF(m_self);
 809     return m_self;
 810 }
 811
 812
 813 IMPLEMENT_ABSTRACT_CLASS(wxPyEvent, wxEvent);
 814 IMPLEMENT_ABSTRACT_CLASS(wxPyCommandEvent, wxCommandEvent);
 815
 816
 817 wxPyEvent::wxPyEvent(int id)
 818     : wxEvent(id) {
 819 }
 820
 821
 822 wxPyEvent::wxPyEvent(const wxPyEvent& evt)
 823     : wxEvent(evt)
 824 {
 825     SetSelf(evt.m_self, TRUE);
 826 }
 827
 828
 829 wxPyEvent::~wxPyEvent() {
 830 }
 831
 832
 833 wxPyCommandEvent::wxPyCommandEvent(wxEventType commandType, int id)
 834     : wxCommandEvent(commandType, id) {
 835 }
 836
 837
 838 wxPyCommandEvent::wxPyCommandEvent(const wxPyCommandEvent& evt)
 839     : wxCommandEvent(evt)
 840 {
 841     SetSelf(evt.m_self, TRUE);
 842 }
 843
 844
 845 wxPyCommandEvent::~wxPyCommandEvent() {
 846 }
 847
 848
 849
 850
 851 //---------------------------------------------------------------------------
 852 //---------------------------------------------------------------------------
 853
 854
 855 wxPyTimer::wxPyTimer(PyObject* callback) {
 856     func = callback;
 857     Py_INCREF(func);
 858 }
 859
 860 wxPyTimer::~wxPyTimer() {
 861     wxPyBeginBlockThreads();
 862     Py_DECREF(func);
 863     wxPyEndBlockThreads();
 864 }
 865
 866 void wxPyTimer::Notify() {
 867     if (!func || func == Py_None) {
 868         wxTimer::Notify();
 869     }
 870     else {
 871         wxPyBeginBlockThreads();
 872
 873         PyObject*   result;
 874         PyObject*   args = Py_BuildValue("()");
 875
 876         result = PyEval_CallObject(func, args);
 877         Py_DECREF(args);
 878         if (result) {
 879             Py_DECREF(result);
 880             PyErr_Clear();
 881         } else {
 882             PyErr_Print();
 883         }
 884
 885         wxPyEndBlockThreads();
 886     }
 887 }
 888
 889
 890
 891 //---------------------------------------------------------------------------
 892 //---------------------------------------------------------------------------
 893 // Convert a wxList to a Python List
 894
 895 PyObject* wxPy_ConvertList(wxListBase* list, const char* className) {
 896     PyObject*   pyList;
 897     PyObject*   pyObj;
 898     wxObject*   wxObj;
 899     wxNode*     node = list->First();
 900
 901     wxPyBeginBlockThreads();
 902     pyList = PyList_New(0);
 903     while (node) {
 904         wxObj = node->Data();
 905         pyObj = wxPyMake_wxObject(wxObj); //wxPyConstructObject(wxObj, className);
 906         PyList_Append(pyList, pyObj);
 907         node = node->Next();
 908     }
 909     wxPyEndBlockThreads();
 910     return pyList;
 911 }
 912
 913 //----------------------------------------------------------------------
 914
 915 long wxPyGetWinHandle(wxWindow* win) {
 916 #ifdef __WXMSW__
 917     return (long)win->GetHandle();
 918 #endif
 919
 920     // Find and return the actual X-Window.
 921 #ifdef __WXGTK__
 922     if (win->m_wxwindow) {
 923         GdkWindowPrivate* bwin = (GdkWindowPrivate*)GTK_PIZZA(win->m_wxwindow)->bin_window;
 924         if (bwin) {
 925             return (long)bwin->xwindow;
 926         }
 927     }
 928 #endif
 929     return 0;
 930 }
 931
 932 //----------------------------------------------------------------------
 933 // Some helper functions for typemaps in my_typemaps.i, so they won't be
 934 // included in every file...
 935
 936
 937 byte* byte_LIST_helper(PyObject* source) {
 938     if (!PyList_Check(source)) {
 939         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
 940         return NULL;
 941     }
 942     int count = PyList_Size(source);
 943     byte* temp = new byte[count];
 944     if (! temp) {
 945         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
 946         return NULL;
 947     }
 948     for (int x=0; x<count; x++) {
 949         PyObject* o = PyList_GetItem(source, x);
 950         if (! PyInt_Check(o)) {
 951             PyErr_SetString(PyExc_TypeError, "Expected a list of integers.");
 952             return NULL;
 953         }
 954         temp[x] = (byte)PyInt_AsLong(o);
 955     }
 956     return temp;
 957 }
 958
 959
 960 int* int_LIST_helper(PyObject* source) {
 961     if (!PyList_Check(source)) {
 962         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
 963         return NULL;
 964     }
 965     int count = PyList_Size(source);
 966     int* temp = new int[count];
 967     if (! temp) {
 968         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
 969         return NULL;
 970     }
 971     for (int x=0; x<count; x++) {
 972         PyObject* o = PyList_GetItem(source, x);
 973         if (! PyInt_Check(o)) {
 974             PyErr_SetString(PyExc_TypeError, "Expected a list of integers.");
 975             return NULL;
 976         }
 977         temp[x] = PyInt_AsLong(o);
 978     }
 979     return temp;
 980 }
 981
 982
 983 long* long_LIST_helper(PyObject* source) {
 984     if (!PyList_Check(source)) {
 985         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
 986         return NULL;
 987     }
 988     int count = PyList_Size(source);
 989     long* temp = new long[count];
 990     if (! temp) {
 991         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
 992         return NULL;
 993     }
 994     for (int x=0; x<count; x++) {
 995         PyObject* o = PyList_GetItem(source, x);
 996         if (! PyInt_Check(o)) {
 997             PyErr_SetString(PyExc_TypeError, "Expected a list of integers.");
 998             return NULL;
 999         }
1000         temp[x] = PyInt_AsLong(o);
1001     }
1002     return temp;
1003 }
1004
1005
1006 char** string_LIST_helper(PyObject* source) {
1007     if (!PyList_Check(source)) {
1008         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
1009         return NULL;
1010     }
1011     int count = PyList_Size(source);
1012     char** temp = new char*[count];
1013     if (! temp) {
1014         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
1015         return NULL;
1016     }
1017     for (int x=0; x<count; x++) {
1018         PyObject* o = PyList_GetItem(source, x);
1019         if (! PyString_Check(o)) {
1020             PyErr_SetString(PyExc_TypeError, "Expected a list of strings.");
1021             return NULL;
1022         }
1023         temp[x] = PyString_AsString(o);
1024     }
1025     return temp;
1026 }
1027
1028 //--------------------------------
1029 // Part of patch from Tim Hochberg
1030 static inline bool wxPointFromObjects(PyObject* o1, PyObject* o2, wxPoint* point) {
1031     if (PyInt_Check(o1) && PyInt_Check(o2)) {
1032         point->x = PyInt_AS_LONG(o1);
1033         point->y = PyInt_AS_LONG(o2);
1034         return true;
1035     }
1036     if (PyFloat_Check(o1) && PyFloat_Check(o2)) {
1037         point->x = (int)PyFloat_AS_DOUBLE(o1);
1038         point->y = (int)PyFloat_AS_DOUBLE(o2);
1039         return true;
1040     }
1041     if (PyInstance_Check(o1) || PyInstance_Check(o2)) {
1042         // Disallow instances because they can cause havok
1043         return false;
1044     }
1045     if (PyNumber_Check(o1) && PyNumber_Check(o2)) {
1046         // I believe this excludes instances, so this should be safe without INCREFFing o1 and o2
1047         point->x = PyInt_AsLong(o1);
1048         point->y = PyInt_AsLong(o2);
1049         return true;
1050     }
1051     return false;
1052 }
1053
1054
1055 wxPoint* wxPoint_LIST_helper(PyObject* source, int *count) {
1056     // Putting all of the declarations here allows
1057     // us to put the error handling all in one place.
1058     int x;
1059     wxPoint* temp;
1060     PyObject *o, *o1, *o2;
1061     bool isFast = PyList_Check(source) || PyTuple_Check(source);
1062
1063     if (!PySequence_Check(source)) {
1064         goto error0;
1065     }
1066
1067     // The length of the sequence is returned in count.
1068     *count = PySequence_Length(source);
1069     if (*count < 0) {
1070         goto error0;
1071     }
1072
1073     temp = new wxPoint[*count];
1074     if (!temp) {
1075         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
1076         return NULL;
1077     }
1078     for (x=0; x<*count; x++) {
1079         // Get an item: try fast way first.
1080         if (isFast) {
1081             o = PySequence_Fast_GET_ITEM(source, x);
1082         }
1083         else {
1084             o = PySequence_GetItem(source, x);
1085             if (o == NULL) {
1086                 goto error1;
1087             }
1088         }
1089
1090         // Convert o to wxPoint.
1091         if ((PyTuple_Check(o) && PyTuple_GET_SIZE(o) == 2) ||
1092             (PyList_Check(o) && PyList_GET_SIZE(o) == 2)) {
1093             o1 = PySequence_Fast_GET_ITEM(o, 0);
1094             o2 = PySequence_Fast_GET_ITEM(o, 1);
1095             if (!wxPointFromObjects(o1, o2, &temp[x])) {
1096                 goto error2;
1097             }
1098         }
1099         else if (PyInstance_Check(o)) {
1100             wxPoint* pt;
1101             if (SWIG_GetPtrObj(o, (void **)&pt, "_wxPoint_p")) {
1102                 goto error2;
1103             }
1104             temp[x] = *pt;
1105         }
1106         else if (PySequence_Check(o) && PySequence_Length(o) == 2) {
1107             o1 = PySequence_GetItem(o, 0);
1108             o2 = PySequence_GetItem(o, 1);
1109             if (!wxPointFromObjects(o1, o2, &temp[x])) {
1110                 goto error3;
1111             }
1112             Py_DECREF(o1);
1113             Py_DECREF(o2);
1114         }
1115         else {
1116             goto error2;
1117         }
1118         // Clean up.
1119         if (!isFast)
1120             Py_DECREF(o);
1121     }
1122     return temp;
1123
1124 error3:
1125     Py_DECREF(o1);
1126     Py_DECREF(o2);
1127 error2:
1128     if (!isFast)
1129         Py_DECREF(o);
1130 error1:
1131     delete temp;
1132 error0:
1133     PyErr_SetString(PyExc_TypeError, "Expected a sequence of length-2 sequences or wxPoints.");
1134     return NULL;
1135 }
1136 // end of patch
1137 //------------------------------
1138
1139
1140 wxBitmap** wxBitmap_LIST_helper(PyObject* source) {
1141     if (!PyList_Check(source)) {
1142         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
1143         return NULL;
1144     }
1145     int count = PyList_Size(source);
1146     wxBitmap** temp = new wxBitmap*[count];
1147     if (! temp) {
1148         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
1149         return NULL;
1150     }
1151     for (int x=0; x<count; x++) {
1152         PyObject* o = PyList_GetItem(source, x);
1153         if (PyInstance_Check(o)) {
1154             wxBitmap*    pt;
1155             if (SWIG_GetPtrObj(o, (void **) &pt,"_wxBitmap_p")) {
1156                 PyErr_SetString(PyExc_TypeError,"Expected _wxBitmap_p.");
1157                 return NULL;
1158             }
1159             temp[x] = pt;
1160         }
1161         else {
1162             PyErr_SetString(PyExc_TypeError, "Expected a list of wxBitmaps.");
1163             return NULL;
1164         }
1165     }
1166     return temp;
1167 }
1168
1169
1170
1171 wxString* wxString_LIST_helper(PyObject* source) {
1172     if (!PyList_Check(source)) {
1173         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
1174         return NULL;
1175     }
1176     int count = PyList_Size(source);
1177     wxString* temp = new wxString[count];
1178     if (! temp) {
1179         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
1180         return NULL;
1181     }
1182     for (int x=0; x<count; x++) {
1183         PyObject* o = PyList_GetItem(source, x);
1184 #if PYTHON_API_VERSION >= 1009
1185         if (! PyString_Check(o) && ! PyUnicode_Check(o)) {
1186             PyErr_SetString(PyExc_TypeError, "Expected a list of string or unicode objects.");
1187             return NULL;
1188         }
1189
1190         char* buff;
1191         int   length;
1192         if (PyString_AsStringAndSize(o, &buff, &length) == -1)
1193             return NULL;
1194         temp[x] = wxString(buff, length);
1195 #else
1196         if (! PyString_Check(o)) {
1197             PyErr_SetString(PyExc_TypeError, "Expected a list of strings.");
1198             return NULL;
1199         }
1200         temp[x] = PyString_AsString(o);
1201 #endif
1202     }
1203     return temp;
1204 }
1205
1206
1207 wxAcceleratorEntry* wxAcceleratorEntry_LIST_helper(PyObject* source) {
1208     if (!PyList_Check(source)) {
1209         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
1210         return NULL;
1211     }
1212     int count                = PyList_Size(source);
1213     wxAcceleratorEntry* temp = new wxAcceleratorEntry[count];
1214     if (! temp) {
1215         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
1216         return NULL;
1217     }
1218     for (int x=0; x<count; x++) {
1219         PyObject* o = PyList_GetItem(source, x);
1220         if (PyInstance_Check(o)) {
1221             wxAcceleratorEntry* ae;
1222             if (SWIG_GetPtrObj(o, (void **) &ae,"_wxAcceleratorEntry_p")) {
1223                 PyErr_SetString(PyExc_TypeError,"Expected _wxAcceleratorEntry_p.");
1224                 return NULL;
1225             }
1226             temp[x] = *ae;
1227         }
1228         else if (PyTuple_Check(o)) {
1229             PyObject* o1 = PyTuple_GetItem(o, 0);
1230             PyObject* o2 = PyTuple_GetItem(o, 1);
1231             PyObject* o3 = PyTuple_GetItem(o, 2);
1232             temp[x].Set(PyInt_AsLong(o1), PyInt_AsLong(o2), PyInt_AsLong(o3));
1233         }
1234         else {
1235             PyErr_SetString(PyExc_TypeError, "Expected a list of 3-tuples or wxAcceleratorEntry objects.");
1236             return NULL;
1237         }
1238     }
1239     return temp;
1240 }
1241
1242
1243 wxPen** wxPen_LIST_helper(PyObject* source) {
1244     if (!PyList_Check(source)) {
1245         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
1246         return NULL;
1247     }
1248     int count = PyList_Size(source);
1249     wxPen** temp = new wxPen*[count];
1250     if (!temp) {
1251         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
1252         return NULL;
1253     }
1254     for (int x=0; x<count; x++) {
1255         PyObject* o = PyList_GetItem(source, x);
1256         if (PyInstance_Check(o)) {
1257             wxPen*  pt;
1258             if (SWIG_GetPtrObj(o, (void **) &pt,"_wxPen_p")) {
1259                 delete temp;
1260                 PyErr_SetString(PyExc_TypeError,"Expected _wxPen_p.");
1261                 return NULL;
1262             }
1263             temp[x] = pt;
1264         }
1265         else {
1266             delete temp;
1267             PyErr_SetString(PyExc_TypeError, "Expected a list of wxPens.");
1268             return NULL;
1269         }
1270     }
1271     return temp;
1272 }
1273
1274
1275 bool _2int_seq_helper(PyObject* source, int* i1, int* i2) {
1276     bool isFast = PyList_Check(source) || PyTuple_Check(source);
1277     PyObject *o1, *o2;
1278
1279     if (!PySequence_Check(source) || PySequence_Length(source) != 2)
1280         return FALSE;
1281
1282     if (isFast) {
1283         o1 = PySequence_Fast_GET_ITEM(source, 0);
1284         o2 = PySequence_Fast_GET_ITEM(source, 1);
1285     }
1286     else {
1287         o1 = PySequence_GetItem(source, 0);
1288         o2 = PySequence_GetItem(source, 1);
1289     }
1290
1291     *i1 = PyInt_AsLong(o1);
1292     *i2 = PyInt_AsLong(o2);
1293
1294     if (! isFast) {
1295         Py_DECREF(o1);
1296         Py_DECREF(o2);
1297     }
1298     return TRUE;
1299 }
1300
1301
1302 bool _4int_seq_helper(PyObject* source, int* i1, int* i2, int* i3, int* i4) {
1303     bool isFast = PyList_Check(source) || PyTuple_Check(source);
1304     PyObject *o1, *o2, *o3, *o4;
1305
1306     if (!PySequence_Check(source) || PySequence_Length(source) != 4)
1307         return FALSE;
1308
1309     if (isFast) {
1310         o1 = PySequence_Fast_GET_ITEM(source, 0);
1311         o2 = PySequence_Fast_GET_ITEM(source, 1);
1312         o3 = PySequence_Fast_GET_ITEM(source, 2);
1313         o4 = PySequence_Fast_GET_ITEM(source, 3);
1314     }
1315     else {
1316         o1 = PySequence_GetItem(source, 0);
1317         o2 = PySequence_GetItem(source, 1);
1318         o3 = PySequence_GetItem(source, 2);
1319         o4 = PySequence_GetItem(source, 3);
1320     }
1321
1322     *i1 = PyInt_AsLong(o1);
1323     *i2 = PyInt_AsLong(o2);
1324     *i3 = PyInt_AsLong(o3);
1325     *i4 = PyInt_AsLong(o4);
1326
1327     if (! isFast) {
1328         Py_DECREF(o1);
1329         Py_DECREF(o2);
1330         Py_DECREF(o3);
1331         Py_DECREF(o4);
1332     }
1333     return TRUE;
1334 }
1335
1336
1337 //----------------------------------------------------------------------
1338
1339 bool wxSize_helper(PyObject* source, wxSize** obj) {
1340
1341     // If source is an object instance then it may already be the right type
1342     if (PyInstance_Check(source)) {
1343         wxSize* ptr;
1344         if (SWIG_GetPtrObj(source, (void **)&ptr, "_wxSize_p"))
1345             goto error;
1346         *obj = ptr;
1347         return TRUE;
1348     }
1349     // otherwise a 2-tuple of integers is expected
1350     else if (PySequence_Check(source) && PyObject_Length(source) == 2) {
1351         PyObject* o1 = PySequence_GetItem(source, 0);
1352         PyObject* o2 = PySequence_GetItem(source, 1);
1353         **obj = wxSize(PyInt_AsLong(o1), PyInt_AsLong(o2));
1354         return TRUE;
1355     }
1356
1357  error:
1358     PyErr_SetString(PyExc_TypeError, "Expected a 2-tuple of integers or a wxSize object.");
1359     return FALSE;
1360 }
1361
1362 bool wxPoint_helper(PyObject* source, wxPoint** obj) {
1363
1364     // If source is an object instance then it may already be the right type
1365     if (PyInstance_Check(source)) {
1366         wxPoint* ptr;
1367         if (SWIG_GetPtrObj(source, (void **)&ptr, "_wxPoint_p"))
1368             goto error;
1369         *obj = ptr;
1370         return TRUE;
1371     }
1372     // otherwise a length-2 sequence of integers is expected
1373     if (PySequence_Check(source) && PySequence_Length(source) == 2) {
1374         PyObject* o1 = PySequence_GetItem(source, 0);
1375         PyObject* o2 = PySequence_GetItem(source, 1);
1376                 // This should really check for integers, not numbers -- but that would break code.
1377                 if (!PyNumber_Check(o1) || !PyNumber_Check(o2)) {
1378                         Py_DECREF(o1);
1379                     Py_DECREF(o2);
1380                         goto error;
1381                 }
1382                 **obj = wxPoint(PyInt_AsLong(o1), PyInt_AsLong(o2));
1383                 Py_DECREF(o1);
1384                 Py_DECREF(o2);
1385         return TRUE;
1386     }
1387  error:
1388     PyErr_SetString(PyExc_TypeError, "Expected a 2-tuple of integers or a wxPoint object.");
1389     return FALSE;
1390 }
1391
1392
1393
1394 bool wxRealPoint_helper(PyObject* source, wxRealPoint** obj) {
1395
1396     // If source is an object instance then it may already be the right type
1397     if (PyInstance_Check(source)) {
1398         wxRealPoint* ptr;
1399         if (SWIG_GetPtrObj(source, (void **)&ptr, "_wxRealPoint_p"))
1400             goto error;
1401         *obj = ptr;
1402         return TRUE;
1403     }
1404     // otherwise a 2-tuple of floats is expected
1405     else if (PySequence_Check(source) && PyObject_Length(source) == 2) {
1406         PyObject* o1 = PySequence_GetItem(source, 0);
1407         PyObject* o2 = PySequence_GetItem(source, 1);
1408         **obj = wxRealPoint(PyFloat_AsDouble(o1), PyFloat_AsDouble(o2));
1409         return TRUE;
1410     }
1411
1412  error:
1413     PyErr_SetString(PyExc_TypeError, "Expected a 2-tuple of floats or a wxRealPoint object.");
1414     return FALSE;
1415 }
1416
1417
1418
1419
1420 bool wxRect_helper(PyObject* source, wxRect** obj) {
1421
1422     // If source is an object instance then it may already be the right type
1423     if (PyInstance_Check(source)) {
1424         wxRect* ptr;
1425         if (SWIG_GetPtrObj(source, (void **)&ptr, "_wxRect_p"))
1426             goto error;
1427         *obj = ptr;
1428         return TRUE;
1429     }
1430     // otherwise a 4-tuple of integers is expected
1431     else if (PySequence_Check(source) && PyObject_Length(source) == 4) {
1432         PyObject* o1 = PySequence_GetItem(source, 0);
1433         PyObject* o2 = PySequence_GetItem(source, 1);
1434         PyObject* o3 = PySequence_GetItem(source, 2);
1435         PyObject* o4 = PySequence_GetItem(source, 3);
1436         **obj = wxRect(PyInt_AsLong(o1), PyInt_AsLong(o2),
1437                      PyInt_AsLong(o3), PyInt_AsLong(o4));
1438         return TRUE;
1439     }
1440
1441  error:
1442     PyErr_SetString(PyExc_TypeError, "Expected a 4-tuple of integers or a wxRect object.");
1443     return FALSE;
1444 }
1445
1446
1447
1448 bool wxColour_helper(PyObject* source, wxColour** obj) {
1449
1450     // If source is an object instance then it may already be the right type
1451     if (PyInstance_Check(source)) {
1452         wxColour* ptr;
1453         if (SWIG_GetPtrObj(source, (void **)&ptr, "_wxColour_p"))
1454             goto error;
1455         *obj = ptr;
1456         return TRUE;
1457     }
1458     // otherwise a string is expected
1459     else if (PyString_Check(source)) {
1460         wxString spec = PyString_AS_STRING(source);
1461         if (spec[0U] == '#' && spec.Length() == 7) {  // It's  #RRGGBB
1462             char* junk;
1463             int red   = strtol(spec.Mid(1,2), &junk, 16);
1464             int green = strtol(spec.Mid(3,2), &junk, 16);
1465             int blue  = strtol(spec.Mid(5,2), &junk, 16);
1466             **obj = wxColour(red, green, blue);
1467             return TRUE;
1468         }
1469         else {                                       // it's a colour name
1470             **obj = wxColour(spec);
1471             return TRUE;
1472         }
1473     }
1474
1475  error:
1476     PyErr_SetString(PyExc_TypeError, "Expected a wxColour object or a string containing a colour name or '#RRGGBB'.");
1477     return FALSE;
1478 }
1479
1480
1481 //----------------------------------------------------------------------
1482
1483 PyObject* wxArrayString2PyList_helper(const wxArrayString& arr) {
1484
1485     PyObject* list = PyList_New(0);
1486     for (size_t i=0; i < arr.GetCount(); i++) {
1487         PyObject* str = PyString_FromString(arr[i].c_str());
1488         PyList_Append(list, str);
1489         Py_DECREF(str);
1490     }
1491     return list;
1492 }
1493
1494
1495 PyObject* wxArrayInt2PyList_helper(const wxArrayInt& arr) {
1496
1497     PyObject* list = PyList_New(0);
1498     for (size_t i=0; i < arr.GetCount(); i++) {
1499         PyObject* number = PyInt_FromLong(arr[i]);
1500         PyList_Append(list, number);
1501         Py_DECREF(number);
1502     }
1503     return list;
1504 }
1505
1506
1507 //----------------------------------------------------------------------
1508 //----------------------------------------------------------------------
1509
1510
1511
1512