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:     1-July-1997
   8 // RCS-ID:      $Id$
   9 // Copyright:   (c) 1998 by Total Control Software
  10 // Licence:     wxWindows license
  11 /////////////////////////////////////////////////////////////////////////////
  12
  13
  14 #undef DEBUG
  15 #include <Python.h>
  16 #include "wx/wxPython/wxPython_int.h"
  17 #include "wx/wxPython/pyistream.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 #ifdef __WXMAC__
  32 #include <wx/mac/private.h>
  33 #endif
  34
  35 #include <wx/clipbrd.h>
  36 #include <wx/mimetype.h>
  37 #include <wx/image.h>
  38
  39 //----------------------------------------------------------------------
  40
  41 #if PYTHON_API_VERSION <= 1007 && wxUSE_UNICODE
  42 #error Python must support Unicode to use wxWindows Unicode
  43 #endif
  44
  45 //----------------------------------------------------------------------
  46
  47 wxPyApp* wxPythonApp = NULL;  // Global instance of application object
  48 bool wxPyDoCleanup = False;
  49 bool wxPyDoingCleanup = False;
  50
  51
  52 #ifdef WXP_WITH_THREAD
  53 struct wxPyThreadState {
  54     unsigned long  tid;
  55     PyThreadState* tstate;
  56     int            blocked;
  57
  58     wxPyThreadState(unsigned long _tid=0, PyThreadState* _tstate=NULL)
  59         : tid(_tid), tstate(_tstate), blocked(1) {}
  60 };
  61
  62 #include <wx/dynarray.h>
  63 WX_DECLARE_OBJARRAY(wxPyThreadState, wxPyThreadStateArray);
  64 #include <wx/arrimpl.cpp>
  65 WX_DEFINE_OBJARRAY(wxPyThreadStateArray);
  66
  67 wxPyThreadStateArray* wxPyTStates = NULL;
  68 wxMutex*              wxPyTMutex = NULL;
  69 #endif
  70
  71
  72 static PyObject* wxPython_dict = NULL;
  73 static PyObject* wxPyAssertionError = NULL;
  74
  75 PyObject* wxPyPtrTypeMap = NULL;
  76
  77
  78 #ifdef __WXMSW__             // If building for win32...
  79 //----------------------------------------------------------------------
  80 // This gets run when the DLL is loaded.  We just need to save a handle.
  81 //----------------------------------------------------------------------
  82
  83 BOOL WINAPI DllMain(
  84     HINSTANCE   hinstDLL,    // handle to DLL module
  85     DWORD       fdwReason,   // reason for calling function
  86     LPVOID      lpvReserved  // reserved
  87    )
  88 {
  89     // If wxPython is embedded in another wxWindows app then
  90     // the inatance has already been set.
  91     if (! wxGetInstance())
  92         wxSetInstance(hinstDLL);
  93     return True;
  94 }
  95 #endif
  96
  97 //----------------------------------------------------------------------
  98 // Classes for implementing the wxp main application shell.
  99 //----------------------------------------------------------------------
 100
 101 IMPLEMENT_ABSTRACT_CLASS(wxPyApp, wxApp);
 102
 103
 104 wxPyApp::wxPyApp() {
 105     m_assertMode = wxPYAPP_ASSERT_EXCEPTION;
 106     m_startupComplete = False;
 107 }
 108
 109
 110 wxPyApp::~wxPyApp() {
 111 }
 112
 113
 114 // This one isn't acutally called...  We fake it with _BootstrapApp
 115 bool wxPyApp::OnInit() {
 116     return False;
 117 }
 118
 119
 120 int  wxPyApp::MainLoop() {
 121     int retval = 0;
 122
 123     DeletePendingObjects();
 124     bool initialized = wxTopLevelWindows.GetCount() != 0;
 125     if (initialized) {
 126         if ( m_exitOnFrameDelete == Later ) {
 127             m_exitOnFrameDelete = Yes;
 128         }
 129
 130         retval = wxApp::MainLoop();
 131         OnExit();
 132     }
 133     return retval;
 134 }
 135
 136
 137 bool wxPyApp::OnInitGui() {
 138     bool rval=True;
 139     wxApp::OnInitGui();  // in this case always call the base class version
 140     wxPyBeginBlockThreads();
 141     if (wxPyCBH_findCallback(m_myInst, "OnInitGui"))
 142         rval = wxPyCBH_callCallback(m_myInst, Py_BuildValue("()"));
 143     wxPyEndBlockThreads();
 144     return rval;
 145 }
 146
 147
 148 int wxPyApp::OnExit() {
 149     int rval=0;
 150     wxPyBeginBlockThreads();
 151     if (wxPyCBH_findCallback(m_myInst, "OnExit"))
 152         rval = wxPyCBH_callCallback(m_myInst, Py_BuildValue("()"));
 153     wxPyEndBlockThreads();
 154     wxApp::OnExit();  // in this case always call the base class version
 155     return rval;
 156 }
 157
 158
 159 #ifdef __WXDEBUG__
 160 void wxPyApp::OnAssert(const wxChar *file,
 161                      int line,
 162                      const wxChar *cond,
 163                      const wxChar *msg) {
 164
 165     // if we're not fully initialized then just log the error
 166     if (! m_startupComplete) {
 167         wxString buf;
 168         buf.Alloc(4096);
 169         buf.Printf(wxT("%s(%d): assert \"%s\" failed"),
 170                    file, line, cond);
 171         if (msg != NULL) {
 172             buf += wxT(": ");
 173             buf += msg;
 174         }
 175         wxLogDebug(buf);
 176         return;
 177     }
 178
 179     // If the OnAssert is overloaded in the Python class then call it...
 180     bool found;
 181     wxPyBeginBlockThreads();
 182     if ((found = wxPyCBH_findCallback(m_myInst, "OnAssert"))) {
 183         PyObject* fso = wx2PyString(file);
 184         PyObject* cso = wx2PyString(file);
 185         PyObject* mso;
 186         if (msg != NULL)
 187             mso = wx2PyString(file);
 188         else {
 189             mso = Py_None; Py_INCREF(Py_None);
 190         }
 191         wxPyCBH_callCallback(m_myInst, Py_BuildValue("(OiOO)", fso, line, cso, mso));
 192         Py_DECREF(fso);
 193         Py_DECREF(cso);
 194         Py_DECREF(mso);
 195     }
 196     wxPyEndBlockThreads();
 197
 198     // ...otherwise do our own thing with it
 199     if (! found) {
 200         // ignore it?
 201         if (m_assertMode & wxPYAPP_ASSERT_SUPPRESS)
 202             return;
 203
 204         // turn it into a Python exception?
 205         if (m_assertMode & wxPYAPP_ASSERT_EXCEPTION) {
 206             wxString buf;
 207             buf.Alloc(4096);
 208             buf.Printf(wxT("C++ assertion \"%s\" failed in %s(%d)"), cond, file, line);
 209             if (msg != NULL) {
 210                 buf += wxT(": ");
 211                 buf += msg;
 212             }
 213
 214             // set the exception
 215             wxPyBeginBlockThreads();
 216             PyObject* s = wx2PyString(buf);
 217             PyErr_SetObject(wxPyAssertionError, s);
 218             Py_DECREF(s);
 219             wxPyEndBlockThreads();
 220
 221             // Now when control returns to whatever API wrapper was called from
 222             // Python it should detect that an exception is set and will return
 223             // NULL, signalling the exception to Python.
 224         }
 225
 226         // Send it to the normal log destination, but only if
 227         // not _DIALOG because it will call this too
 228         if ( (m_assertMode & wxPYAPP_ASSERT_LOG) && !(m_assertMode & wxPYAPP_ASSERT_DIALOG)) {
 229             wxString buf;
 230             buf.Alloc(4096);
 231             buf.Printf(wxT("%s(%d): assert \"%s\" failed"),
 232                        file, line, cond);
 233             if (msg != NULL) {
 234                 buf += wxT(": ");
 235                 buf += msg;
 236             }
 237             wxLogDebug(buf);
 238         }
 239
 240         // do the normal wx assert dialog?
 241         if (m_assertMode & wxPYAPP_ASSERT_DIALOG)
 242             wxApp::OnAssert(file, line, cond, msg);
 243     }
 244 }
 245 #endif
 246
 247     // For catching Apple Events
 248 void wxPyApp::MacOpenFile(const wxString &fileName)
 249 {
 250     wxPyBeginBlockThreads();
 251     if (wxPyCBH_findCallback(m_myInst, "MacOpenFile")) {
 252         PyObject* s = wx2PyString(fileName);
 253         wxPyCBH_callCallback(m_myInst, Py_BuildValue("(O)", s));
 254         Py_DECREF(s);
 255     }
 256     wxPyEndBlockThreads();
 257 }
 258
 259 void wxPyApp::MacPrintFile(const wxString &fileName)
 260 {
 261     wxPyBeginBlockThreads();
 262     if (wxPyCBH_findCallback(m_myInst, "MacPrintFile")) {
 263         PyObject* s = wx2PyString(fileName);
 264         wxPyCBH_callCallback(m_myInst, Py_BuildValue("(O)", s));
 265         Py_DECREF(s);
 266     }
 267     wxPyEndBlockThreads();
 268 }
 269
 270 void wxPyApp::MacNewFile()
 271 {
 272     wxPyBeginBlockThreads();
 273     if (wxPyCBH_findCallback(m_myInst, "MacNewFile"))
 274         wxPyCBH_callCallback(m_myInst, Py_BuildValue("()"));
 275     wxPyEndBlockThreads();
 276 }
 277
 278 void wxPyApp::MacReopenApp()
 279 {
 280     wxPyBeginBlockThreads();
 281     if (wxPyCBH_findCallback(m_myInst, "MacReopenApp"))
 282         wxPyCBH_callCallback(m_myInst, Py_BuildValue("()"));
 283     wxPyEndBlockThreads();
 284 }
 285
 286
 287 /*static*/
 288 bool wxPyApp::GetMacSupportPCMenuShortcuts() {
 289 #ifdef __WXMAC__
 290     return s_macSupportPCMenuShortcuts;
 291 #else
 292     return 0;
 293 #endif
 294 }
 295
 296 /*static*/
 297 long wxPyApp::GetMacAboutMenuItemId() {
 298 #ifdef __WXMAC__
 299     return s_macAboutMenuItemId;
 300 #else
 301     return 0;
 302 #endif
 303 }
 304
 305 /*static*/
 306 long wxPyApp::GetMacPreferencesMenuItemId() {
 307 #ifdef __WXMAC__
 308     return s_macPreferencesMenuItemId;
 309 #else
 310     return 0;
 311 #endif
 312 }
 313
 314 /*static*/
 315 long wxPyApp::GetMacExitMenuItemId() {
 316 #ifdef __WXMAC__
 317     return s_macExitMenuItemId;
 318 #else
 319     return 0;
 320 #endif
 321 }
 322
 323 /*static*/
 324 wxString wxPyApp::GetMacHelpMenuTitleName() {
 325 #ifdef __WXMAC__
 326     return s_macHelpMenuTitleName;
 327 #else
 328     return wxEmptyString;
 329 #endif
 330 }
 331
 332 /*static*/
 333 void wxPyApp::SetMacSupportPCMenuShortcuts(bool val) {
 334 #ifdef __WXMAC__
 335     s_macSupportPCMenuShortcuts = val;
 336 #endif
 337 }
 338
 339 /*static*/
 340 void wxPyApp::SetMacAboutMenuItemId(long val) {
 341 #ifdef __WXMAC__
 342     s_macAboutMenuItemId = val;
 343 #endif
 344 }
 345
 346 /*static*/
 347 void wxPyApp::SetMacPreferencesMenuItemId(long val) {
 348 #ifdef __WXMAC__
 349     s_macPreferencesMenuItemId = val;
 350 #endif
 351 }
 352
 353 /*static*/
 354 void wxPyApp::SetMacExitMenuItemId(long val) {
 355 #ifdef __WXMAC__
 356     s_macExitMenuItemId = val;
 357 #endif
 358 }
 359
 360 /*static*/
 361 void wxPyApp::SetMacHelpMenuTitleName(const wxString& val) {
 362 #ifdef __WXMAC__
 363     s_macHelpMenuTitleName = val;
 364 #endif
 365 }
 366
 367
 368 // This finishes the initialization of wxWindows and then calls the OnInit
 369 // that should be present in the derived (Python) class.
 370 void wxPyApp::_BootstrapApp()
 371 {
 372     bool        result;
 373     PyObject*   retval = NULL;
 374     PyObject*   pyint  = NULL;
 375
 376
 377     // Get any command-line args passed to this program from the sys module
 378     int    argc = 0;
 379     char** argv = NULL;
 380     wxPyBeginBlockThreads();
 381     PyObject* sysargv = PySys_GetObject("argv");
 382     if (sysargv != NULL) {
 383         argc = PyList_Size(sysargv);
 384         argv = new char*[argc+1];
 385         int x;
 386         for(x=0; x<argc; x++) {
 387             PyObject *pyArg = PyList_GetItem(sysargv, x);
 388             argv[x] = PyString_AsString(pyArg);
 389         }
 390         argv[argc] = NULL;
 391     }
 392     wxPyEndBlockThreads();
 393
 394     result = wxEntryStart(argc, argv);
 395     delete [] argv;
 396
 397     wxPyBeginBlockThreads();
 398     if (! result)  {
 399         PyErr_SetString(PyExc_SystemError, "wxEntryStart failed!");
 400         goto error;
 401     }
 402
 403     // The stock objects were all NULL when they were loaded into
 404     // SWIG generated proxies, so re-init those now...
 405     wxPy_ReinitStockObjects(3);
 406
 407     // It's now ok to generate exceptions for assertion errors.
 408     wxPythonApp->SetStartupComplete(True);
 409
 410     // Call the Python wxApp's OnInit function
 411     if (wxPyCBH_findCallback(m_myInst, "OnInit")) {
 412
 413         PyObject* method = m_myInst.GetLastFound();
 414         PyObject* argTuple = PyTuple_New(0);
 415         retval = PyEval_CallObject(method, argTuple);
 416         Py_DECREF(argTuple);
 417         Py_DECREF(method);
 418         if (retval == NULL)
 419             goto error;
 420
 421         pyint = PyNumber_Int(retval);
 422         if (! pyint) {
 423             PyErr_SetString(PyExc_TypeError, "OnInit should return a boolean value");
 424             goto error;
 425         }
 426         result = PyInt_AS_LONG(pyint);
 427     }
 428     else {
 429         // Is it okay if there is no OnInit?  Probably so...
 430         result = True;
 431     }
 432
 433
 434     if (! result) {
 435         PyErr_SetString(PyExc_SystemExit, "OnInit returned False, exiting...");
 436     }
 437
 438  error:
 439     Py_XDECREF(retval);
 440     Py_XDECREF(pyint);
 441
 442     wxPyEndBlockThreads();
 443 };
 444
 445 //---------------------------------------------------------------------
 446 //----------------------------------------------------------------------
 447
 448
 449 #if 0
 450 static char* wxPyCopyCString(const wxChar* src)
 451 {
 452     wxWX2MBbuf buff = (wxWX2MBbuf)wxConvCurrent->cWX2MB(src);
 453     size_t len = strlen(buff);
 454     char*  dest = new char[len+1];
 455     strcpy(dest, buff);
 456     return dest;
 457 }
 458
 459 #if wxUSE_UNICODE
 460 static char* wxPyCopyCString(const char* src)   // we need a char version too
 461 {
 462     size_t len = strlen(src);
 463     char*  dest = new char[len+1];
 464     strcpy(dest, src);
 465     return dest;
 466 }
 467 #endif
 468
 469 static wxChar* wxPyCopyWString(const char *src)
 470 {
 471     //wxMB2WXbuf buff = wxConvCurrent->cMB2WX(src);
 472     wxString str(src, *wxConvCurrent);
 473     return copystring(str);
 474 }
 475
 476 #if wxUSE_UNICODE
 477 static wxChar* wxPyCopyWString(const wxChar *src)
 478 {
 479     return copystring(src);
 480 }
 481 #endif
 482 #endif
 483
 484
 485 inline const char* dropwx(const char* name) {
 486     if (name[0] == 'w' && name[1] == 'x')
 487         return name+2;
 488     else
 489         return name;
 490 }
 491
 492 //----------------------------------------------------------------------
 493
 494 // This function is called when the wxc module is imported to do some initial
 495 // setup.  (Before there is a wxApp object.)  The rest happens in
 496 // wxPyApp::_BootstrapApp
 497 void __wxPyPreStart(PyObject* moduleDict)
 498 {
 499
 500 #ifdef __WXMSW__
 501 //    wxCrtSetDbgFlag(_CRTDBG_LEAK_CHECK_DF);
 502 #endif
 503
 504 #ifdef WXP_WITH_THREAD
 505     PyEval_InitThreads();
 506     wxPyTStates = new wxPyThreadStateArray;
 507     wxPyTMutex = new wxMutex;
 508
 509     // Save the current (main) thread state in our array
 510     PyThreadState* tstate = wxPyBeginAllowThreads();
 511     wxPyEndAllowThreads(tstate);
 512 #endif
 513
 514     // Ensure that the build options in the DLL (or whatever) match this build
 515     wxApp::CheckBuildOptions(WX_BUILD_OPTIONS_SIGNATURE, "wxPython");
 516
 517     // Init the stock objects to a non-NULL value so SWIG doesn't create them as None
 518     wxPy_ReinitStockObjects(1);
 519 }
 520
 521
 522
 523 void __wxPyCleanup() {
 524     wxPyDoingCleanup = True;
 525     if (wxPyDoCleanup) {
 526         wxPyDoCleanup = False;
 527         wxEntryCleanup();
 528     }
 529 #ifdef WXP_WITH_THREAD
 530     delete wxPyTMutex;
 531     wxPyTMutex = NULL;
 532     wxPyTStates->Empty();
 533     delete wxPyTStates;
 534     wxPyTStates = NULL;
 535 #endif
 536 }
 537
 538
 539 // Save a reference to the dictionary of the wx.core module, and inject
 540 // a few more things into it.
 541 PyObject* __wxPySetDictionary(PyObject* /* self */, PyObject* args)
 542 {
 543
 544     if (!PyArg_ParseTuple(args, "O", &wxPython_dict))
 545         return NULL;
 546
 547     if (!PyDict_Check(wxPython_dict)) {
 548         PyErr_SetString(PyExc_TypeError, "_wxPySetDictionary must have dictionary object!");
 549         return NULL;
 550     }
 551
 552     if (! wxPyPtrTypeMap)
 553         wxPyPtrTypeMap = PyDict_New();
 554     PyDict_SetItemString(wxPython_dict, "__wxPyPtrTypeMap", wxPyPtrTypeMap);
 555
 556     // Create an exception object to use for wxASSERTions
 557     wxPyAssertionError = PyErr_NewException("wx.core.PyAssertionError",
 558                                             PyExc_AssertionError, NULL);
 559     PyDict_SetItemString(wxPython_dict, "PyAssertionError", wxPyAssertionError);
 560
 561
 562 #ifdef __WXMOTIF__
 563 #define wxPlatform "__WXMOTIF__"
 564 #define wxPlatName "wxMotif"
 565 #endif
 566 #ifdef __WXX11__
 567 #define wxPlatform "__WXX11__"
 568 #define wxPlatName "wxX11"
 569 #endif
 570 #ifdef __WXGTK__
 571 #define wxPlatform "__WXGTK__"
 572 #define wxPlatName "wxGTK"
 573 #endif
 574 #ifdef __WXMSW__
 575 #define wxPlatform "__WXMSW__"
 576 #define wxPlatName "wxMSW"
 577 #endif
 578 #ifdef __WXMAC__
 579 #define wxPlatform "__WXMAC__"
 580 #define wxPlatName "wxMac"
 581 #endif
 582
 583 #ifdef __WXDEBUG__
 584     int wxdebug = 1;
 585 #else
 586     int wxdebug = 0;
 587 #endif
 588
 589     // These should be deprecated in favor of the PlatformInfo tuple built below...
 590     PyDict_SetItemString(wxPython_dict, "Platform", PyString_FromString(wxPlatform));
 591     PyDict_SetItemString(wxPython_dict, "USE_UNICODE", PyInt_FromLong(wxUSE_UNICODE));
 592     PyDict_SetItemString(wxPython_dict, "__WXDEBUG__", PyInt_FromLong(wxdebug));
 593
 594
 595     PyObject* PlatInfo = PyList_New(0);
 596     PyObject* obj;
 597
 598 #define _AddInfoString(st) \
 599     obj = PyString_FromString(st); \
 600     PyList_Append(PlatInfo, obj); \
 601     Py_DECREF(obj)
 602
 603     _AddInfoString(wxPlatform);
 604     _AddInfoString(wxPlatName);
 605 #if wxUSE_UNICODE
 606     _AddInfoString("unicode");
 607 #else
 608     _AddInfoString("ascii");
 609 #endif
 610 #ifdef __WXGTK__
 611 #ifdef __WXGTK20__
 612     _AddInfoString("gtk2");
 613 #else
 614     _AddInfoString("gtk1");
 615 #endif
 616 #endif
 617
 618 #undef _AddInfoString
 619
 620     PyObject* PlatInfoTuple = PyList_AsTuple(PlatInfo);
 621     Py_DECREF(PlatInfo);
 622     PyDict_SetItemString(wxPython_dict, "PlatformInfo", PlatInfoTuple);
 623
 624     RETURN_NONE();
 625 }
 626
 627
 628 //---------------------------------------------------------------------------
 629
 630 // Python's PyInstance_Check does not return True for instances of new-style
 631 // classes.  This should get close enough for both new and old classes but I
 632 // should re-evaluate the need for doing instance checks...
 633 bool wxPyInstance_Check(PyObject* obj) {
 634     return PyObject_HasAttrString(obj, "__class__") != 0;
 635 }
 636
 637
 638 // This one checks if the object is an instance of a SWIG proxy class (it has
 639 // a .this attribute)
 640 bool wxPySwigInstance_Check(PyObject* obj) {
 641     return PyObject_HasAttrString(obj, "this") != 0;
 642 }
 643
 644 //---------------------------------------------------------------------------
 645
 646 // The stock objects are no longer created when the wxc module is imported,
 647 // but only after the app object has been created.  The
 648 // wxPy_ReinitStockObjects function will be called 3 times to pass the stock
 649 // objects though various stages of evolution:
 650 //
 651 //   pass 1: Set all the pointers to a non-NULL value so the Python proxy
 652 //           object will be created (otherwise it will just use None.)
 653 //
 654 //   pass 2: After the module has been imported and the python proxys have
 655 //           been created, then set the __class__ to be _wxPyUnbornObject so
 656 //           it will catch any access to the object and will raise an exception.
 657 //
 658 //   pass 3: Finally, from OnInit patch things up so the stock objects can
 659 //           be used.
 660
 661
 662 PyObject* __wxPyFixStockObjects(PyObject* /* self */, PyObject* args)
 663 {
 664     wxPy_ReinitStockObjects(2);
 665     RETURN_NONE();
 666 }
 667
 668
 669 static void rsoPass2(const char* name)
 670 {
 671     static PyObject* unbornObjectClass = NULL;
 672     PyObject* obj;
 673
 674     if (unbornObjectClass == NULL) {
 675         unbornObjectClass = PyDict_GetItemString(wxPython_dict, "_wxPyUnbornObject");
 676         Py_INCREF(unbornObjectClass);
 677     }
 678
 679     // Find the object instance
 680     obj = PyDict_GetItemString(wxPython_dict, (char*)dropwx(name));
 681     wxCHECK_RET(obj != NULL, wxT("Unable to find stock object"));
 682     wxCHECK_RET(wxPySwigInstance_Check(obj), wxT("Not a swig instance"));
 683
 684     // Change its class
 685     PyObject_SetAttrString(obj, "__class__",  unbornObjectClass);
 686
 687 }
 688
 689 static void rsoPass3(const char* name, const char* classname, void* ptr)
 690 {
 691     PyObject* obj;
 692     PyObject* classobj;
 693     PyObject* ptrobj;
 694
 695     // Find the object instance
 696     obj = PyDict_GetItemString(wxPython_dict, (char*)dropwx(name));
 697     wxCHECK_RET(obj != NULL, wxT("Unable to find stock object"));
 698     wxCHECK_RET(wxPySwigInstance_Check(obj), wxT("Not a swig instance"));
 699
 700     // Find the class object and put it back in the instance
 701     classobj = PyDict_GetItemString(wxPython_dict, (char*)dropwx(classname));
 702     wxCHECK_RET(classobj != NULL, wxT("Unable to find stock class object"));
 703     PyObject_SetAttrString(obj, "__class__",  classobj);
 704
 705     // Rebuild the .this swigified pointer with the new value of the C++ pointer
 706     ptrobj = wxPyMakeSwigPtr(ptr, wxString(classname, *wxConvCurrent));
 707     PyObject_SetAttrString(obj, "this", ptrobj);
 708     Py_DECREF(ptrobj);
 709 }
 710
 711
 712
 713 void wxPy_ReinitStockObjects(int pass)
 714 {
 715
 716 #define REINITOBJ(name, classname) \
 717     if (pass == 1) { name = (classname*)0xC0C0C0C0; } \
 718     else if (pass == 2) { rsoPass2(#name); } \
 719     else if (pass == 3) { rsoPass3(#name, #classname, (void*)name); }
 720
 721
 722 #define REINITOBJ2(name, classname) \
 723     if (pass == 1) { } \
 724     else if (pass == 2) { rsoPass2(#name); } \
 725     else if (pass == 3) { rsoPass3(#name, #classname, (void*)&name); }
 726
 727
 728     REINITOBJ(wxNORMAL_FONT, wxFont);
 729     REINITOBJ(wxSMALL_FONT, wxFont);
 730     REINITOBJ(wxITALIC_FONT, wxFont);
 731     REINITOBJ(wxSWISS_FONT, wxFont);
 732
 733     REINITOBJ(wxRED_PEN, wxPen);
 734     REINITOBJ(wxCYAN_PEN, wxPen);
 735     REINITOBJ(wxGREEN_PEN, wxPen);
 736     REINITOBJ(wxBLACK_PEN, wxPen);
 737     REINITOBJ(wxWHITE_PEN, wxPen);
 738     REINITOBJ(wxTRANSPARENT_PEN, wxPen);
 739     REINITOBJ(wxBLACK_DASHED_PEN, wxPen);
 740     REINITOBJ(wxGREY_PEN, wxPen);
 741     REINITOBJ(wxMEDIUM_GREY_PEN, wxPen);
 742     REINITOBJ(wxLIGHT_GREY_PEN, wxPen);
 743
 744     REINITOBJ(wxBLUE_BRUSH, wxBrush);
 745     REINITOBJ(wxGREEN_BRUSH, wxBrush);
 746     REINITOBJ(wxWHITE_BRUSH, wxBrush);
 747     REINITOBJ(wxBLACK_BRUSH, wxBrush);
 748     REINITOBJ(wxTRANSPARENT_BRUSH, wxBrush);
 749     REINITOBJ(wxCYAN_BRUSH, wxBrush);
 750     REINITOBJ(wxRED_BRUSH, wxBrush);
 751     REINITOBJ(wxGREY_BRUSH, wxBrush);
 752     REINITOBJ(wxMEDIUM_GREY_BRUSH, wxBrush);
 753     REINITOBJ(wxLIGHT_GREY_BRUSH, wxBrush);
 754
 755     REINITOBJ(wxBLACK, wxColour);
 756     REINITOBJ(wxWHITE, wxColour);
 757     REINITOBJ(wxRED, wxColour);
 758     REINITOBJ(wxBLUE, wxColour);
 759     REINITOBJ(wxGREEN, wxColour);
 760     REINITOBJ(wxCYAN, wxColour);
 761     REINITOBJ(wxLIGHT_GREY, wxColour);
 762
 763     REINITOBJ(wxSTANDARD_CURSOR, wxCursor);
 764     REINITOBJ(wxHOURGLASS_CURSOR, wxCursor);
 765     REINITOBJ(wxCROSS_CURSOR, wxCursor);
 766
 767     REINITOBJ2(wxNullBitmap, wxBitmap);
 768     REINITOBJ2(wxNullIcon, wxIcon);
 769     REINITOBJ2(wxNullCursor, wxCursor);
 770     REINITOBJ2(wxNullPen, wxPen);
 771     REINITOBJ2(wxNullBrush, wxBrush);
 772     REINITOBJ2(wxNullPalette, wxPalette);
 773     REINITOBJ2(wxNullFont, wxFont);
 774     REINITOBJ2(wxNullColour, wxColour);
 775
 776     REINITOBJ(wxTheFontList, wxFontList);
 777     REINITOBJ(wxThePenList, wxPenList);
 778     REINITOBJ(wxTheBrushList, wxBrushList);
 779     REINITOBJ(wxTheColourDatabase, wxColourDatabase);
 780
 781
 782     REINITOBJ(wxTheClipboard, wxClipboard);
 783     REINITOBJ2(wxDefaultValidator, wxValidator);
 784     REINITOBJ2(wxNullImage, wxImage);
 785     REINITOBJ2(wxNullAcceleratorTable, wxAcceleratorTable);
 786
 787 #undef REINITOBJ
 788 #undef REINITOBJ2
 789 }
 790
 791 //---------------------------------------------------------------------------
 792
 793 void wxPyClientData_dtor(wxPyClientData* self) {
 794     if (! wxPyDoingCleanup) {           // Don't do it during cleanup as Python
 795                                         // may have already garbage collected the object...
 796         wxPyBeginBlockThreads();
 797         Py_DECREF(self->m_obj);
 798         self->m_obj = NULL;
 799         wxPyEndBlockThreads();
 800     }
 801 }
 802
 803 void wxPyUserData_dtor(wxPyUserData* self) {
 804     if (! wxPyDoingCleanup) {
 805         wxPyBeginBlockThreads();
 806         Py_DECREF(self->m_obj);
 807         self->m_obj = NULL;
 808         wxPyEndBlockThreads();
 809     }
 810 }
 811
 812
 813 // This is called when an OOR controled object is being destroyed.  Although
 814 // the C++ object is going away there is no way to force the Python object
 815 // (and all references to it) to die too.  This causes problems (crashes) in
 816 // wxPython when a python shadow object attempts to call a C++ method using
 817 // the now bogus pointer... So to try and prevent this we'll do a little black
 818 // magic and change the class of the python instance to a class that will
 819 // raise an exception for any attempt to call methods with it.  See
 820 // _wxPyDeadObject in _core_ex.py for the implementation of this class.
 821 void wxPyOORClientData_dtor(wxPyOORClientData* self) {
 822
 823     static PyObject* deadObjectClass = NULL;
 824
 825     wxPyBeginBlockThreads();
 826     if (deadObjectClass == NULL) {
 827         deadObjectClass = PyDict_GetItemString(wxPython_dict, "_wxPyDeadObject");
 828         // TODO:  Can not wxASSERT here because inside a wxPyBeginBlock Threads,
 829         // will lead to a deadlock when it tries to aquire the GIL again.
 830         //wxASSERT_MSG(deadObjectClass != NULL, wxT("Can't get _wxPyDeadObject class!"));
 831         Py_INCREF(deadObjectClass);
 832     }
 833
 834
 835     // Only if there is more than one reference to the object
 836     if ( !wxPyDoingCleanup && self->m_obj->ob_refcnt > 1 ) {
 837         // bool isInstance = wxPyInstance_Check(self->m_obj);
 838         // TODO same here
 839         //wxASSERT_MSG(isInstance, wxT("m_obj not an instance!?!?!"));
 840
 841         // Call __del__, if there is one.
 842         PyObject* func = PyObject_GetAttrString(self->m_obj, "__del__");
 843         if (func) {
 844             PyObject* rv = PyObject_CallMethod(self->m_obj, "__del__", NULL);
 845             Py_XDECREF(rv);
 846             Py_DECREF(func);
 847         }
 848         if (PyErr_Occurred())
 849             PyErr_Clear();      // just ignore it for now
 850
 851
 852         PyObject* dict = PyObject_GetAttrString(self->m_obj, "__dict__");
 853         if (dict) {
 854             // Clear the instance's dictionary
 855             PyDict_Clear(dict);
 856
 857             // put the name of the old class into the instance, and then reset the
 858             // class to be the dead class.
 859             PyObject* klass = PyObject_GetAttrString(self->m_obj, "__class__");
 860             PyObject* name =  PyObject_GetAttrString(klass, "__name__");
 861             PyDict_SetItemString(dict, "_name", name);
 862             PyObject_SetAttrString(self->m_obj, "__class__",  deadObjectClass);
 863             //Py_INCREF(deadObjectClass);
 864             Py_DECREF(klass);
 865             Py_DECREF(name);
 866         }
 867     }
 868
 869     // m_obj is DECREF'd in the base class dtor...
 870     wxPyEndBlockThreads();
 871 }
 872
 873
 874 //---------------------------------------------------------------------------
 875 // Stuff used by OOR to find the right wxPython class type to return and to
 876 // build it.
 877
 878
 879 // The pointer type map is used when the "pointer" type name generated by SWIG
 880 // is not the same as the shadow class name, for example wxPyTreeCtrl
 881 // vs. wxTreeCtrl.  It needs to be referenced in Python as well as from C++,
 882 // so we'll just make it a Python dictionary in the wx module's namespace.
 883 // (See __wxSetDictionary)
 884 void wxPyPtrTypeMap_Add(const char* commonName, const char* ptrName) {
 885     if (! wxPyPtrTypeMap)
 886         wxPyPtrTypeMap = PyDict_New();
 887     PyDict_SetItemString(wxPyPtrTypeMap,
 888                          (char*)commonName,
 889                          PyString_FromString((char*)ptrName));
 890 }
 891
 892
 893
 894
 895 PyObject*  wxPyMake_wxObject(wxObject* source, bool checkEvtHandler) {
 896     PyObject* target = NULL;
 897     bool      isEvtHandler = False;
 898
 899     if (source) {
 900         // If it's derived from wxEvtHandler then there may
 901         // already be a pointer to a Python object that we can use
 902         // in the OOR data.
 903         if (checkEvtHandler && wxIsKindOf(source, wxEvtHandler)) {
 904             isEvtHandler = True;
 905             wxEvtHandler* eh = (wxEvtHandler*)source;
 906             wxPyOORClientData* data = (wxPyOORClientData*)eh->GetClientObject();
 907             if (data) {
 908                 target = data->m_obj;
 909                 if (target)
 910                     Py_INCREF(target);
 911             }
 912         }
 913
 914         if (! target) {
 915             // Otherwise make it the old fashioned way by making a new shadow
 916             // object and putting this pointer in it.  Look up the class
 917             // heirarchy until we find a class name that is located in the
 918             // python module.
 919             const wxClassInfo* info   = source->GetClassInfo();
 920             wxString           name   = info->GetClassName();
 921             bool               exists = wxPyCheckSwigType(name);
 922             while (info && !exists) {
 923                 info = info->GetBaseClass1();
 924                 name = info->GetClassName();
 925                 exists = wxPyCheckSwigType(name);
 926             }
 927             if (info) {
 928                 target = wxPyConstructObject((void*)source, name, False);
 929                 if (target && isEvtHandler)
 930                     ((wxEvtHandler*)source)->SetClientObject(new wxPyOORClientData(target));
 931             } else {
 932                 wxString msg(wxT("wxPython class not found for "));
 933                 msg += source->GetClassInfo()->GetClassName();
 934                 PyErr_SetString(PyExc_NameError, msg.mbc_str());
 935                 target = NULL;
 936             }
 937         }
 938     } else {  // source was NULL so return None.
 939         Py_INCREF(Py_None); target = Py_None;
 940     }
 941     return target;
 942 }
 943
 944
 945 PyObject*  wxPyMake_wxSizer(wxSizer* source) {
 946     PyObject* target = NULL;
 947
 948     if (source && wxIsKindOf(source, wxSizer)) {
 949         // If it's derived from wxSizer then there may already be a pointer to
 950         // a Python object that we can use in the OOR data.
 951         wxSizer* sz = (wxSizer*)source;
 952         wxPyOORClientData* data = (wxPyOORClientData*)sz->GetClientObject();
 953         if (data) {
 954             target = data->m_obj;
 955             if (target)
 956                 Py_INCREF(target);
 957         }
 958     }
 959     if (! target) {
 960         target = wxPyMake_wxObject(source, False);
 961         if (target != Py_None)
 962             ((wxSizer*)source)->SetClientObject(new wxPyOORClientData(target));
 963     }
 964     return target;
 965 }
 966
 967
 968 //---------------------------------------------------------------------------
 969
 970
 971 #ifdef WXP_WITH_THREAD
 972 inline
 973 unsigned long wxPyGetCurrentThreadId() {
 974     return wxThread::GetCurrentId();
 975 }
 976
 977 static wxPyThreadState gs_shutdownTState;
 978
 979 static
 980 wxPyThreadState* wxPyGetThreadState() {
 981     if (wxPyTMutex == NULL) // Python is shutting down...
 982         return &gs_shutdownTState;
 983
 984     unsigned long ctid = wxPyGetCurrentThreadId();
 985     wxPyThreadState* tstate = NULL;
 986
 987     wxPyTMutex->Lock();
 988     for(size_t i=0; i < wxPyTStates->GetCount(); i++) {
 989         wxPyThreadState& info = wxPyTStates->Item(i);
 990         if (info.tid == ctid) {
 991             tstate = &info;
 992             break;
 993         }
 994     }
 995     wxPyTMutex->Unlock();
 996     wxASSERT_MSG(tstate, wxT("PyThreadState should not be NULL!"));
 997     return tstate;
 998 }
 999
1000
1001 static
1002 void wxPySaveThreadState(PyThreadState* tstate) {
1003     if (wxPyTMutex == NULL) { // Python is shutting down, assume a single thread...
1004         gs_shutdownTState.tstate = tstate;
1005         return;
1006     }
1007     unsigned long ctid = wxPyGetCurrentThreadId();
1008     wxPyTMutex->Lock();
1009     for(size_t i=0; i < wxPyTStates->GetCount(); i++) {
1010         wxPyThreadState& info = wxPyTStates->Item(i);
1011         if (info.tid == ctid) {
1012 #if 0
1013             if (info.tstate != tstate)
1014                 wxLogMessage("*** tstate mismatch!???");
1015 #endif
1016             // info.tstate = tstate;    *** DO NOT update existing ones???
1017             // Normally it will never change, but apparently COM callbacks
1018             // (i.e. ActiveX controls) will (incorrectly IMHO) use a transient
1019             // tstate which will then be garbage the next time we try to use
1020             // it...
1021             wxPyTMutex->Unlock();
1022             return;
1023         }
1024     }
1025     // not found, so add it...
1026     wxPyTStates->Add(new wxPyThreadState(ctid, tstate));
1027     wxPyTMutex->Unlock();
1028 }
1029
1030 #endif
1031
1032
1033
1034 // Calls from Python to wxWindows code are wrapped in calls to these
1035 // functions:
1036
1037 PyThreadState* wxPyBeginAllowThreads() {
1038 #ifdef WXP_WITH_THREAD
1039     PyThreadState* saved = PyEval_SaveThread();  // Py_BEGIN_ALLOW_THREADS;
1040     wxPySaveThreadState(saved);
1041     wxPyGetThreadState()->blocked -= 1;
1042     return saved;
1043 #else
1044     return NULL;
1045 #endif
1046 }
1047
1048 void wxPyEndAllowThreads(PyThreadState* saved) {
1049 #ifdef WXP_WITH_THREAD
1050     wxPyGetThreadState()->blocked += 1;
1051     PyEval_RestoreThread(saved);   // Py_END_ALLOW_THREADS;
1052 #endif
1053 }
1054
1055
1056
1057 // Calls from wxWindows back to Python code, or even any PyObject
1058 // manipulations, PyDECREF's and etc. are wrapped in calls to these functions:
1059
1060 void wxPyBeginBlockThreads() {
1061 #ifdef WXP_WITH_THREAD
1062     wxPyThreadState* tstate = wxPyGetThreadState();
1063     if (tstate->blocked++ == 0) {  // if nested calls then do nothing
1064         PyEval_RestoreThread(tstate->tstate);
1065     }
1066 #endif
1067 }
1068
1069
1070 void wxPyEndBlockThreads() {
1071 #ifdef WXP_WITH_THREAD
1072     wxPyThreadState* tstate = wxPyGetThreadState();
1073     tstate->blocked -= 1;
1074     if ( tstate->blocked == 0) {  // if nested calls then do nothing
1075         PyEval_SaveThread();
1076     }
1077 #endif
1078 }
1079
1080
1081 //---------------------------------------------------------------------------
1082 // wxPyInputStream and wxPyCBInputStream methods
1083
1084
1085 void wxPyInputStream::close() {
1086     /* do nothing for now */
1087 }
1088
1089 void wxPyInputStream::flush() {
1090     /* do nothing for now */
1091 }
1092
1093 bool wxPyInputStream::eof() {
1094     if (m_wxis)
1095         return m_wxis->Eof();
1096     else
1097         return True;
1098 }
1099
1100 wxPyInputStream::~wxPyInputStream() {
1101     /* do nothing */
1102 }
1103
1104
1105
1106
1107 PyObject* wxPyInputStream::read(int size) {
1108     PyObject* obj = NULL;
1109     wxMemoryBuffer buf;
1110     const int BUFSIZE = 1024;
1111
1112     // check if we have a real wxInputStream to work with
1113     if (!m_wxis) {
1114         wxPyBeginBlockThreads();
1115         PyErr_SetString(PyExc_IOError, "no valid C-wxInputStream");
1116         wxPyEndBlockThreads();
1117         return NULL;
1118     }
1119
1120     if (size < 0) {
1121         // read while bytes are available on the stream
1122         while ( m_wxis->CanRead() ) {
1123             m_wxis->Read(buf.GetAppendBuf(BUFSIZE), BUFSIZE);
1124             buf.UngetAppendBuf(m_wxis->LastRead());
1125         }
1126
1127     } else {  // Read only size number of characters
1128         m_wxis->Read(buf.GetWriteBuf(size), size);
1129         buf.UngetWriteBuf(m_wxis->LastRead());
1130     }
1131
1132     // error check
1133     wxPyBeginBlockThreads();
1134     wxStreamError err = m_wxis->GetLastError();
1135     if (err != wxSTREAM_NO_ERROR && err != wxSTREAM_EOF) {
1136         PyErr_SetString(PyExc_IOError,"IOError in wxInputStream");
1137     }
1138     else {
1139         // We use only strings for the streams, not unicode
1140         obj = PyString_FromStringAndSize(buf, buf.GetDataLen());
1141     }
1142     wxPyEndBlockThreads();
1143     return obj;
1144 }
1145
1146
1147 PyObject* wxPyInputStream::readline(int size) {
1148     PyObject* obj = NULL;
1149     wxMemoryBuffer buf;
1150     int i;
1151     char ch;
1152
1153     // check if we have a real wxInputStream to work with
1154     if (!m_wxis) {
1155         wxPyBeginBlockThreads();
1156         PyErr_SetString(PyExc_IOError,"no valid C-wxInputStream");
1157         wxPyEndBlockThreads();
1158         return NULL;
1159     }
1160
1161     // read until \n or byte limit reached
1162     for (i=ch=0; (ch != '\n') && (m_wxis->CanRead()) && ((size < 0) || (i < size)); i++) {
1163         ch = m_wxis->GetC();
1164         buf.AppendByte(ch);
1165     }
1166
1167     // errorcheck
1168     wxPyBeginBlockThreads();
1169     wxStreamError err = m_wxis->GetLastError();
1170     if (err != wxSTREAM_NO_ERROR && err != wxSTREAM_EOF) {
1171         PyErr_SetString(PyExc_IOError,"IOError in wxInputStream");
1172     }
1173     else {
1174         // We use only strings for the streams, not unicode
1175         obj = PyString_FromStringAndSize((char*)buf.GetData(), buf.GetDataLen());
1176     }
1177     wxPyEndBlockThreads();
1178     return obj;
1179 }
1180
1181
1182 PyObject* wxPyInputStream::readlines(int sizehint) {
1183     PyObject* pylist;
1184
1185     // check if we have a real wxInputStream to work with
1186     if (!m_wxis) {
1187         wxPyBeginBlockThreads();
1188         PyErr_SetString(PyExc_IOError,"no valid C-wxInputStream");
1189         wxPyEndBlockThreads();
1190         return NULL;
1191     }
1192
1193     // init list
1194     wxPyBeginBlockThreads();
1195     pylist = PyList_New(0);
1196     if (!pylist) {
1197         wxPyBeginBlockThreads();
1198         PyErr_NoMemory();
1199         wxPyEndBlockThreads();
1200         return NULL;
1201     }
1202
1203     // read sizehint bytes or until EOF
1204     int i;
1205     for (i=0; (m_wxis->CanRead()) && ((sizehint < 0) || (i < sizehint));) {
1206         PyObject* s = this->readline();
1207         if (s == NULL) {
1208             wxPyBeginBlockThreads();
1209             Py_DECREF(pylist);
1210             wxPyEndBlockThreads();
1211             return NULL;
1212         }
1213         wxPyBeginBlockThreads();
1214         PyList_Append(pylist, s);
1215         i += PyString_Size(s);
1216         wxPyEndBlockThreads();
1217     }
1218
1219     // error check
1220     wxStreamError err = m_wxis->GetLastError();
1221     if (err != wxSTREAM_NO_ERROR && err != wxSTREAM_EOF) {
1222         wxPyBeginBlockThreads();
1223         Py_DECREF(pylist);
1224         PyErr_SetString(PyExc_IOError,"IOError in wxInputStream");
1225         wxPyEndBlockThreads();
1226         return NULL;
1227     }
1228
1229     return pylist;
1230 }
1231
1232
1233 void wxPyInputStream::seek(int offset, int whence) {
1234     if (m_wxis)
1235         m_wxis->SeekI(offset, wxSeekMode(whence));
1236 }
1237
1238 int wxPyInputStream::tell(){
1239     if (m_wxis)
1240         return m_wxis->TellI();
1241     else return 0;
1242 }
1243
1244
1245
1246
1247 wxPyCBInputStream::wxPyCBInputStream(PyObject *r, PyObject *s, PyObject *t, bool block)
1248     : wxInputStream(), m_read(r), m_seek(s), m_tell(t), m_block(block)
1249 {}
1250
1251
1252 wxPyCBInputStream::~wxPyCBInputStream() {
1253     if (m_block) wxPyBeginBlockThreads();
1254     Py_XDECREF(m_read);
1255     Py_XDECREF(m_seek);
1256     Py_XDECREF(m_tell);
1257     if (m_block) wxPyEndBlockThreads();
1258 }
1259
1260
1261 wxPyCBInputStream* wxPyCBInputStream::create(PyObject *py, bool block) {
1262     if (block) wxPyBeginBlockThreads();
1263
1264     PyObject* read = getMethod(py, "read");
1265     PyObject* seek = getMethod(py, "seek");
1266     PyObject* tell = getMethod(py, "tell");
1267
1268     if (!read) {
1269         PyErr_SetString(PyExc_TypeError, "Not a file-like object");
1270         Py_XDECREF(read);
1271         Py_XDECREF(seek);
1272         Py_XDECREF(tell);
1273         if (block) wxPyEndBlockThreads();
1274         return NULL;
1275     }
1276
1277     if (block) wxPyEndBlockThreads();
1278     return new wxPyCBInputStream(read, seek, tell, block);
1279 }
1280
1281
1282 wxPyCBInputStream* wxPyCBInputStream_create(PyObject *py, bool block) {
1283     return wxPyCBInputStream::create(py, block);
1284 }
1285
1286 PyObject* wxPyCBInputStream::getMethod(PyObject* py, char* name) {
1287     if (!PyObject_HasAttrString(py, name))
1288         return NULL;
1289     PyObject* o = PyObject_GetAttrString(py, name);
1290     if (!PyMethod_Check(o) && !PyCFunction_Check(o)) {
1291         Py_DECREF(o);
1292         return NULL;
1293     }
1294     return o;
1295 }
1296
1297
1298 size_t wxPyCBInputStream::GetSize() const {
1299     wxPyCBInputStream* self = (wxPyCBInputStream*)this; // cast off const
1300     if (m_seek && m_tell) {
1301         off_t temp = self->OnSysTell();
1302         off_t ret = self->OnSysSeek(0, wxFromEnd);
1303         self->OnSysSeek(temp, wxFromStart);
1304         return ret;
1305     }
1306     else
1307         return 0;
1308 }
1309
1310
1311 size_t wxPyCBInputStream::OnSysRead(void *buffer, size_t bufsize) {
1312     if (bufsize == 0)
1313         return 0;
1314
1315     wxPyBeginBlockThreads();
1316     PyObject* arglist = Py_BuildValue("(i)", bufsize);
1317     PyObject* result = PyEval_CallObject(m_read, arglist);
1318     Py_DECREF(arglist);
1319
1320     size_t o = 0;
1321     if ((result != NULL) && PyString_Check(result)) {
1322         o = PyString_Size(result);
1323         if (o == 0)
1324             m_lasterror = wxSTREAM_EOF;
1325         if (o > bufsize)
1326             o = bufsize;
1327         memcpy((char*)buffer, PyString_AsString(result), o);  // strings only, not unicode...
1328         Py_DECREF(result);
1329
1330     }
1331     else
1332         m_lasterror = wxSTREAM_READ_ERROR;
1333     wxPyEndBlockThreads();
1334     return o;
1335 }
1336
1337 size_t wxPyCBInputStream::OnSysWrite(const void *buffer, size_t bufsize) {
1338     m_lasterror = wxSTREAM_WRITE_ERROR;
1339     return 0;
1340 }
1341
1342 off_t wxPyCBInputStream::OnSysSeek(off_t off, wxSeekMode mode) {
1343     wxPyBeginBlockThreads();
1344 #ifdef _LARGE_FILES
1345     // off_t is a 64-bit value...
1346     PyObject* arglist = Py_BuildValue("(Li)", off, mode);
1347 #else
1348     PyObject* arglist = Py_BuildValue("(ii)", off, mode);
1349 #endif
1350     PyObject* result = PyEval_CallObject(m_seek, arglist);
1351     Py_DECREF(arglist);
1352     Py_XDECREF(result);
1353     wxPyEndBlockThreads();
1354     return OnSysTell();
1355 }
1356
1357
1358 off_t wxPyCBInputStream::OnSysTell() const {
1359     wxPyBeginBlockThreads();
1360     PyObject* arglist = Py_BuildValue("()");
1361     PyObject* result = PyEval_CallObject(m_tell, arglist);
1362     Py_DECREF(arglist);
1363     off_t o = 0;
1364     if (result != NULL) {
1365 #ifdef _LARGE_FILES
1366         if (PyLong_Check(result))
1367             o = PyLong_AsLongLong(result);
1368         else
1369 #endif
1370             o = PyInt_AsLong(result);
1371         Py_DECREF(result);
1372     };
1373     wxPyEndBlockThreads();
1374     return o;
1375 }
1376
1377 //----------------------------------------------------------------------
1378
1379 IMPLEMENT_ABSTRACT_CLASS(wxPyCallback, wxObject);
1380
1381 wxPyCallback::wxPyCallback(PyObject* func) {
1382     m_func = func;
1383     Py_INCREF(m_func);
1384 }
1385
1386 wxPyCallback::wxPyCallback(const wxPyCallback& other) {
1387     m_func = other.m_func;
1388     Py_INCREF(m_func);
1389 }
1390
1391 wxPyCallback::~wxPyCallback() {
1392     wxPyBeginBlockThreads();
1393     Py_DECREF(m_func);
1394     wxPyEndBlockThreads();
1395 }
1396
1397
1398
1399 // This function is used for all events destined for Python event handlers.
1400 void wxPyCallback::EventThunker(wxEvent& event) {
1401     wxPyCallback*   cb = (wxPyCallback*)event.m_callbackUserData;
1402     PyObject*       func = cb->m_func;
1403     PyObject*       result;
1404     PyObject*       arg;
1405     PyObject*       tuple;
1406     bool            checkSkip = False;
1407
1408     wxPyBeginBlockThreads();
1409     wxString className = event.GetClassInfo()->GetClassName();
1410
1411     // If the event is one of these types then pass the original
1412     // event object instead of the one passed to us.
1413     if ( className == wxT("wxPyEvent") ) {
1414         arg =       ((wxPyEvent*)&event)->GetSelf();
1415         checkSkip = ((wxPyEvent*)&event)->GetCloned();
1416     }
1417     else if ( className == wxT("wxPyCommandEvent") ) {
1418         arg =       ((wxPyCommandEvent*)&event)->GetSelf();
1419         checkSkip = ((wxPyCommandEvent*)&event)->GetCloned();
1420     }
1421     else {
1422         arg = wxPyConstructObject((void*)&event, className);
1423     }
1424
1425     if (!arg) {
1426         PyErr_Print();
1427     } else {
1428         // Check if the event object needs some preinitialization
1429         if (PyObject_HasAttrString(arg, "_preInit")) {
1430             result = PyObject_CallMethod(arg, "_preInit", "O", arg);
1431             if ( result ) {
1432                 Py_DECREF(result);   // result is ignored, but we still need to decref it
1433                 PyErr_Clear();       // Just in case...
1434             } else {
1435                 PyErr_Print();
1436             }
1437         }
1438
1439         // Call the event handler, passing the event object
1440         tuple = PyTuple_New(1);
1441         PyTuple_SET_ITEM(tuple, 0, arg);  // steals ref to arg
1442         result = PyEval_CallObject(func, tuple);
1443         if ( result ) {
1444             Py_DECREF(result);   // result is ignored, but we still need to decref it
1445             PyErr_Clear();       // Just in case...
1446         } else {
1447             PyErr_Print();
1448         }
1449
1450         if ( checkSkip ) {
1451             // if the event object was one of our special types and
1452             // it had been cloned, then we need to extract the Skipped
1453             // value from the original and set it in the clone.
1454             result = PyObject_CallMethod(arg, "GetSkipped", "");
1455             if ( result ) {
1456                 event.Skip(PyInt_AsLong(result));
1457                 Py_DECREF(result);
1458             } else {
1459                 PyErr_Print();
1460             }
1461         }
1462         Py_DECREF(tuple);
1463     }
1464     wxPyEndBlockThreads();
1465 }
1466
1467
1468 //----------------------------------------------------------------------
1469
1470 wxPyCallbackHelper::wxPyCallbackHelper(const wxPyCallbackHelper& other) {
1471       m_lastFound = NULL;
1472       m_self = other.m_self;
1473       m_class = other.m_class;
1474       if (m_self) {
1475           Py_INCREF(m_self);
1476           Py_INCREF(m_class);
1477       }
1478 }
1479
1480
1481 void wxPyCallbackHelper::setSelf(PyObject* self, PyObject* klass, int incref) {
1482     m_self = self;
1483     m_class = klass;
1484     m_incRef = incref;
1485     if (incref) {
1486         Py_INCREF(m_self);
1487         Py_INCREF(m_class);
1488     }
1489 }
1490
1491
1492 #if PYTHON_API_VERSION >= 1011
1493
1494 // Prior to Python 2.2 PyMethod_GetClass returned the class object
1495 // in which the method was defined.  Starting with 2.2 it returns
1496 // "class that asked for the method" which seems totally bogus to me
1497 // but apprently it fixes some obscure problem waiting to happen in
1498 // Python.  Since the API was not documented Guido and the gang felt
1499 // safe in changing it.  Needless to say that totally screwed up the
1500 // logic below in wxPyCallbackHelper::findCallback, hence this icky
1501 // code to find the class where the method is actually defined...
1502
1503 static
1504 PyObject* PyFindClassWithAttr(PyObject *klass, PyObject *name)
1505 {
1506     int i, n;
1507
1508     if (PyType_Check(klass)) {      // new style classes
1509         // This code is borrowed/adapted from _PyType_Lookup in typeobject.c
1510         PyTypeObject* type = (PyTypeObject*)klass;
1511         PyObject *mro, *res, *base, *dict;
1512         /* Look in tp_dict of types in MRO */
1513         mro = type->tp_mro;
1514         assert(PyTuple_Check(mro));
1515         n = PyTuple_GET_SIZE(mro);
1516         for (i = 0; i < n; i++) {
1517             base = PyTuple_GET_ITEM(mro, i);
1518             if (PyClass_Check(base))
1519                 dict = ((PyClassObject *)base)->cl_dict;
1520             else {
1521                 assert(PyType_Check(base));
1522                 dict = ((PyTypeObject *)base)->tp_dict;
1523             }
1524             assert(dict && PyDict_Check(dict));
1525             res = PyDict_GetItem(dict, name);
1526             if (res != NULL)
1527                 return base;
1528         }
1529         return NULL;
1530     }
1531
1532     else if (PyClass_Check(klass)) { // old style classes
1533         // This code is borrowed/adapted from class_lookup in classobject.c
1534         PyClassObject* cp = (PyClassObject*)klass;
1535         PyObject *value = PyDict_GetItem(cp->cl_dict, name);
1536         if (value != NULL) {
1537             return (PyObject*)cp;
1538         }
1539         n = PyTuple_Size(cp->cl_bases);
1540         for (i = 0; i < n; i++) {
1541             PyObject* base = PyTuple_GetItem(cp->cl_bases, i);
1542             PyObject *v = PyFindClassWithAttr(base, name);
1543             if (v != NULL)
1544                 return v;
1545         }
1546         return NULL;
1547     }
1548     return NULL;
1549 }
1550 #endif
1551
1552
1553 static
1554 PyObject* PyMethod_GetDefiningClass(PyObject* method, const char* name)
1555 {
1556     PyObject* mgc = PyMethod_GET_CLASS(method);
1557
1558 #if PYTHON_API_VERSION <= 1010    // prior to Python 2.2, the easy way
1559     return mgc;
1560 #else                             // 2.2 and after, the hard way...
1561
1562     PyObject* nameo = PyString_FromString(name);
1563     PyObject* klass = PyFindClassWithAttr(mgc, nameo);
1564     Py_DECREF(nameo);
1565     return klass;
1566 #endif
1567 }
1568
1569
1570
1571 bool wxPyCallbackHelper::findCallback(const char* name) const {
1572     wxPyCallbackHelper* self = (wxPyCallbackHelper*)this; // cast away const
1573     self->m_lastFound = NULL;
1574
1575     // If the object (m_self) has an attibute of the given name...
1576     if (m_self && PyObject_HasAttrString(m_self, (char*)name)) {
1577         PyObject *method, *klass;
1578         method = PyObject_GetAttrString(m_self, (char*)name);
1579
1580         // ...and if that attribute is a method, and if that method's class is
1581         // not from a base class...
1582         if (PyMethod_Check(method) &&
1583             (klass = PyMethod_GetDefiningClass(method, (char*)name)) != NULL &&
1584             ((klass == m_class) || PyObject_IsSubclass(klass, m_class))) {
1585
1586             // ...then we'll save a pointer to the method so callCallback can call it.
1587             self->m_lastFound = method;
1588         }
1589         else {
1590             Py_DECREF(method);
1591         }
1592     }
1593     return m_lastFound != NULL;
1594 }
1595
1596
1597 int wxPyCallbackHelper::callCallback(PyObject* argTuple) const {
1598     PyObject*   result;
1599     int         retval = False;
1600
1601     result = callCallbackObj(argTuple);
1602     if (result) {                       // Assumes an integer return type...
1603         retval = PyInt_AsLong(result);
1604         Py_DECREF(result);
1605         PyErr_Clear();                  // forget about it if it's not...
1606     }
1607     return retval;
1608 }
1609
1610 // Invoke the Python callable object, returning the raw PyObject return
1611 // value.  Caller should DECREF the return value and also manage the GIL.
1612 PyObject* wxPyCallbackHelper::callCallbackObj(PyObject* argTuple) const {
1613     PyObject* result;
1614
1615     // Save a copy of the pointer in case the callback generates another
1616     // callback.  In that case m_lastFound will have a different value when
1617     // it gets back here...
1618     PyObject* method = m_lastFound;
1619
1620     result = PyEval_CallObject(method, argTuple);
1621     Py_DECREF(argTuple);
1622     Py_DECREF(method);
1623     if (!result) {
1624         PyErr_Print();
1625     }
1626     return result;
1627 }
1628
1629
1630 void wxPyCBH_setCallbackInfo(wxPyCallbackHelper& cbh, PyObject* self, PyObject* klass, int incref) {
1631     cbh.setSelf(self, klass, incref);
1632 }
1633
1634 bool wxPyCBH_findCallback(const wxPyCallbackHelper& cbh, const char* name) {
1635     return cbh.findCallback(name);
1636 }
1637
1638 int  wxPyCBH_callCallback(const wxPyCallbackHelper& cbh, PyObject* argTuple) {
1639     return cbh.callCallback(argTuple);
1640 }
1641
1642 PyObject* wxPyCBH_callCallbackObj(const wxPyCallbackHelper& cbh, PyObject* argTuple) {
1643     return cbh.callCallbackObj(argTuple);
1644 }
1645
1646
1647 void wxPyCBH_delete(wxPyCallbackHelper* cbh) {
1648     if (cbh->m_incRef) {
1649         wxPyBeginBlockThreads();
1650         Py_XDECREF(cbh->m_self);
1651         Py_XDECREF(cbh->m_class);
1652         wxPyEndBlockThreads();
1653     }
1654 }
1655
1656 //---------------------------------------------------------------------------
1657 //---------------------------------------------------------------------------
1658 // These event classes can be derived from in Python and passed through the event
1659 // system without losing anything.  They do this by keeping a reference to
1660 // themselves and some special case handling in wxPyCallback::EventThunker.
1661
1662
1663 wxPyEvtSelfRef::wxPyEvtSelfRef() {
1664     //m_self = Py_None;         // **** We don't do normal ref counting to prevent
1665     //Py_INCREF(m_self);        //      circular loops...
1666     m_cloned = False;
1667 }
1668
1669 wxPyEvtSelfRef::~wxPyEvtSelfRef() {
1670     wxPyBeginBlockThreads();
1671     if (m_cloned)
1672         Py_DECREF(m_self);
1673     wxPyEndBlockThreads();
1674 }
1675
1676 void wxPyEvtSelfRef::SetSelf(PyObject* self, bool clone) {
1677     wxPyBeginBlockThreads();
1678     if (m_cloned)
1679         Py_DECREF(m_self);
1680     m_self = self;
1681     if (clone) {
1682         Py_INCREF(m_self);
1683         m_cloned = True;
1684     }
1685     wxPyEndBlockThreads();
1686 }
1687
1688 PyObject* wxPyEvtSelfRef::GetSelf() const {
1689     Py_INCREF(m_self);
1690     return m_self;
1691 }
1692
1693
1694 IMPLEMENT_ABSTRACT_CLASS(wxPyEvent, wxEvent);
1695 IMPLEMENT_ABSTRACT_CLASS(wxPyCommandEvent, wxCommandEvent);
1696
1697
1698 wxPyEvent::wxPyEvent(int winid, wxEventType commandType)
1699     : wxEvent(winid, commandType) {
1700 }
1701
1702
1703 wxPyEvent::wxPyEvent(const wxPyEvent& evt)
1704     : wxEvent(evt)
1705 {
1706     SetSelf(evt.m_self, True);
1707 }
1708
1709
1710 wxPyEvent::~wxPyEvent() {
1711 }
1712
1713
1714 wxPyCommandEvent::wxPyCommandEvent(wxEventType commandType, int id)
1715     : wxCommandEvent(commandType, id) {
1716 }
1717
1718
1719 wxPyCommandEvent::wxPyCommandEvent(const wxPyCommandEvent& evt)
1720     : wxCommandEvent(evt)
1721 {
1722     SetSelf(evt.m_self, True);
1723 }
1724
1725
1726 wxPyCommandEvent::~wxPyCommandEvent() {
1727 }
1728
1729
1730
1731
1732
1733 //---------------------------------------------------------------------------
1734 //---------------------------------------------------------------------------
1735 // Convert a wxList to a Python List, only works for lists of wxObjects
1736
1737 PyObject* wxPy_ConvertList(wxListBase* listbase) {
1738     wxList*     list = (wxList*)listbase;  // this is probably bad...
1739     PyObject*   pyList;
1740     PyObject*   pyObj;
1741     wxObject*   wxObj;
1742     wxNode*     node = list->GetFirst();
1743
1744     wxPyBeginBlockThreads();
1745     pyList = PyList_New(0);
1746     while (node) {
1747         wxObj = node->GetData();
1748         pyObj = wxPyMake_wxObject(wxObj);
1749         PyList_Append(pyList, pyObj);
1750         node = node->GetNext();
1751     }
1752     wxPyEndBlockThreads();
1753     return pyList;
1754 }
1755
1756 //----------------------------------------------------------------------
1757
1758 long wxPyGetWinHandle(wxWindow* win) {
1759
1760 #ifdef __WXMSW__
1761     return (long)win->GetHandle();
1762 #endif
1763
1764     // Find and return the actual X-Window.
1765 #ifdef __WXGTK__
1766     if (win->m_wxwindow) {
1767 #ifdef __WXGTK20__
1768         return (long) GDK_WINDOW_XWINDOW(GTK_PIZZA(win->m_wxwindow)->bin_window);
1769 #else
1770         GdkWindowPrivate* bwin = (GdkWindowPrivate*)GTK_PIZZA(win->m_wxwindow)->bin_window;
1771         if (bwin) {
1772             return (long)bwin->xwindow;
1773         }
1774 #endif
1775     }
1776 #endif
1777
1778 #ifdef __WXMAC__
1779     return (long)MAC_WXHWND(win->MacGetRootWindow());
1780 #endif
1781
1782     return 0;
1783 }
1784
1785 //----------------------------------------------------------------------
1786 // Some helper functions for typemaps in my_typemaps.i, so they won't be
1787 // included in every file over and over again...
1788
1789 #if PYTHON_API_VERSION >= 1009
1790     static char* wxStringErrorMsg = "String or Unicode type required";
1791 #else
1792     static char* wxStringErrorMsg = "String type required";
1793 #endif
1794
1795
1796 wxString* wxString_in_helper(PyObject* source) {
1797     wxString* target;
1798 #if PYTHON_API_VERSION >= 1009  // Have Python unicode API
1799     if (!PyString_Check(source) && !PyUnicode_Check(source)) {
1800         PyErr_SetString(PyExc_TypeError, wxStringErrorMsg);
1801         return NULL;
1802     }
1803 #if wxUSE_UNICODE
1804     if (PyUnicode_Check(source)) {
1805         target = new wxString();
1806         size_t len = PyUnicode_GET_SIZE(source);
1807         if (len) {
1808             PyUnicode_AsWideChar((PyUnicodeObject*)source, target->GetWriteBuf(len), len);
1809             target->UngetWriteBuf();
1810         }
1811     } else {
1812         // It is a string, get pointers to it and transform to unicode
1813         char* tmpPtr; int tmpSize;
1814         PyString_AsStringAndSize(source, &tmpPtr, &tmpSize);
1815         target = new wxString(tmpPtr, *wxConvCurrent, tmpSize);
1816     }
1817 #else
1818     char* tmpPtr; int tmpSize;
1819     if (PyString_AsStringAndSize(source, &tmpPtr, &tmpSize) == -1) {
1820         PyErr_SetString(PyExc_TypeError, "Unable to convert string");
1821         return NULL;
1822     }
1823     target = new wxString(tmpPtr, tmpSize);
1824 #endif // wxUSE_UNICODE
1825
1826 #else  // No Python unicode API (1.5.2)
1827     if (!PyString_Check(source)) {
1828         PyErr_SetString(PyExc_TypeError, wxStringErrorMsg);
1829         return NULL;
1830     }
1831     target = new wxString(PyString_AS_STRING(source), PyString_GET_SIZE(source));
1832 #endif
1833     return target;
1834 }
1835
1836
1837 // Similar to above except doesn't use "new" and doesn't set an exception
1838 wxString Py2wxString(PyObject* source)
1839 {
1840     wxString target;
1841     bool     doDecRef = False;
1842
1843 #if PYTHON_API_VERSION >= 1009  // Have Python unicode API
1844     if (!PyString_Check(source) && !PyUnicode_Check(source)) {
1845         // Convert to String if not one already...  (TODO: Unicode too?)
1846         source = PyObject_Str(source);
1847         doDecRef = True;
1848     }
1849
1850 #if wxUSE_UNICODE
1851     if (PyUnicode_Check(source)) {
1852         size_t len = PyUnicode_GET_SIZE(source);
1853         if (len) {
1854             PyUnicode_AsWideChar((PyUnicodeObject*)source, target.GetWriteBuf(len), len);
1855             target.UngetWriteBuf();
1856         }
1857     } else {
1858         // It is a string, get pointers to it and transform to unicode
1859         char* tmpPtr; int tmpSize;
1860         PyString_AsStringAndSize(source, &tmpPtr, &tmpSize);
1861         target = wxString(tmpPtr, *wxConvCurrent, tmpSize);
1862     }
1863 #else
1864     char* tmpPtr; int tmpSize;
1865     PyString_AsStringAndSize(source, &tmpPtr, &tmpSize);
1866     target = wxString(tmpPtr, tmpSize);
1867 #endif // wxUSE_UNICODE
1868
1869 #else  // No Python unicode API (1.5.2)
1870     if (!PyString_Check(source)) {
1871         // Convert to String if not one already...
1872         source = PyObject_Str(source);
1873         doDecRef = True;
1874     }
1875     target = wxString(PyString_AS_STRING(source), PyString_GET_SIZE(source));
1876 #endif
1877
1878     if (doDecRef)
1879         Py_DECREF(source);
1880     return target;
1881 }
1882
1883
1884 // Make either a Python String or Unicode object, depending on build mode
1885 PyObject* wx2PyString(const wxString& src)
1886 {
1887     PyObject* str;
1888 #if wxUSE_UNICODE
1889     str = PyUnicode_FromWideChar(src.c_str(), src.Len());
1890 #else
1891     str = PyString_FromStringAndSize(src.c_str(), src.Len());
1892 #endif
1893     return str;
1894 }
1895
1896
1897 //----------------------------------------------------------------------
1898
1899
1900 byte* byte_LIST_helper(PyObject* source) {
1901     if (!PyList_Check(source)) {
1902         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
1903         return NULL;
1904     }
1905     int count = PyList_Size(source);
1906     byte* temp = new byte[count];
1907     if (! temp) {
1908         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
1909         return NULL;
1910     }
1911     for (int x=0; x<count; x++) {
1912         PyObject* o = PyList_GetItem(source, x);
1913         if (! PyInt_Check(o)) {
1914             PyErr_SetString(PyExc_TypeError, "Expected a list of integers.");
1915             return NULL;
1916         }
1917         temp[x] = (byte)PyInt_AsLong(o);
1918     }
1919     return temp;
1920 }
1921
1922
1923 int* int_LIST_helper(PyObject* source) {
1924     if (!PyList_Check(source)) {
1925         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
1926         return NULL;
1927     }
1928     int count = PyList_Size(source);
1929     int* temp = new int[count];
1930     if (! temp) {
1931         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
1932         return NULL;
1933     }
1934     for (int x=0; x<count; x++) {
1935         PyObject* o = PyList_GetItem(source, x);
1936         if (! PyInt_Check(o)) {
1937             PyErr_SetString(PyExc_TypeError, "Expected a list of integers.");
1938             return NULL;
1939         }
1940         temp[x] = PyInt_AsLong(o);
1941     }
1942     return temp;
1943 }
1944
1945
1946 long* long_LIST_helper(PyObject* source) {
1947     if (!PyList_Check(source)) {
1948         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
1949         return NULL;
1950     }
1951     int count = PyList_Size(source);
1952     long* temp = new long[count];
1953     if (! temp) {
1954         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
1955         return NULL;
1956     }
1957     for (int x=0; x<count; x++) {
1958         PyObject* o = PyList_GetItem(source, x);
1959         if (! PyInt_Check(o)) {
1960             PyErr_SetString(PyExc_TypeError, "Expected a list of integers.");
1961             return NULL;
1962         }
1963         temp[x] = PyInt_AsLong(o);
1964     }
1965     return temp;
1966 }
1967
1968
1969 char** string_LIST_helper(PyObject* source) {
1970     if (!PyList_Check(source)) {
1971         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
1972         return NULL;
1973     }
1974     int count = PyList_Size(source);
1975     char** temp = new char*[count];
1976     if (! temp) {
1977         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
1978         return NULL;
1979     }
1980     for (int x=0; x<count; x++) {
1981         PyObject* o = PyList_GetItem(source, x);
1982         if (! PyString_Check(o)) {
1983             PyErr_SetString(PyExc_TypeError, "Expected a list of strings.");
1984             return NULL;
1985         }
1986         temp[x] = PyString_AsString(o);
1987     }
1988     return temp;
1989 }
1990
1991 //--------------------------------
1992 // Part of patch from Tim Hochberg
1993 static inline bool wxPointFromObjects(PyObject* o1, PyObject* o2, wxPoint* point) {
1994     if (PyInt_Check(o1) && PyInt_Check(o2)) {
1995         point->x = PyInt_AS_LONG(o1);
1996         point->y = PyInt_AS_LONG(o2);
1997         return True;
1998     }
1999     if (PyFloat_Check(o1) && PyFloat_Check(o2)) {
2000         point->x = (int)PyFloat_AS_DOUBLE(o1);
2001         point->y = (int)PyFloat_AS_DOUBLE(o2);
2002         return True;
2003     }
2004     if (wxPySwigInstance_Check(o1) || wxPySwigInstance_Check(o2)) {  // TODO: Why???
2005         // Disallow instances because they can cause havok
2006         return False;
2007     }
2008     if (PyNumber_Check(o1) && PyNumber_Check(o2)) {
2009         // I believe this excludes instances, so this should be safe without INCREFFing o1 and o2
2010         point->x = PyInt_AsLong(o1);
2011         point->y = PyInt_AsLong(o2);
2012         return True;
2013     }
2014     return False;
2015 }
2016
2017
2018 wxPoint* wxPoint_LIST_helper(PyObject* source, int *count) {
2019     // Putting all of the declarations here allows
2020     // us to put the error handling all in one place.
2021     int x;
2022     wxPoint* temp;
2023     PyObject *o, *o1, *o2;
2024     bool isFast = PyList_Check(source) || PyTuple_Check(source);
2025
2026     if (!PySequence_Check(source)) {
2027         goto error0;
2028     }
2029
2030     // The length of the sequence is returned in count.
2031     *count = PySequence_Length(source);
2032     if (*count < 0) {
2033         goto error0;
2034     }
2035
2036     temp = new wxPoint[*count];
2037     if (!temp) {
2038         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
2039         return NULL;
2040     }
2041     for (x=0; x<*count; x++) {
2042         // Get an item: try fast way first.
2043         if (isFast) {
2044             o = PySequence_Fast_GET_ITEM(source, x);
2045         }
2046         else {
2047             o = PySequence_GetItem(source, x);
2048             if (o == NULL) {
2049                 goto error1;
2050             }
2051         }
2052
2053         // Convert o to wxPoint.
2054         if ((PyTuple_Check(o) && PyTuple_GET_SIZE(o) == 2) ||
2055             (PyList_Check(o) && PyList_GET_SIZE(o) == 2)) {
2056             o1 = PySequence_Fast_GET_ITEM(o, 0);
2057             o2 = PySequence_Fast_GET_ITEM(o, 1);
2058             if (!wxPointFromObjects(o1, o2, &temp[x])) {
2059                 goto error2;
2060             }
2061         }
2062         else if (wxPySwigInstance_Check(o)) {
2063             wxPoint* pt;
2064             if (! wxPyConvertSwigPtr(o, (void **)&pt, wxT("wxPoint"))) {
2065                 goto error2;
2066             }
2067             temp[x] = *pt;
2068         }
2069         else if (PySequence_Check(o) && PySequence_Length(o) == 2) {
2070             o1 = PySequence_GetItem(o, 0);
2071             o2 = PySequence_GetItem(o, 1);
2072             if (!wxPointFromObjects(o1, o2, &temp[x])) {
2073                 goto error3;
2074             }
2075             Py_DECREF(o1);
2076             Py_DECREF(o2);
2077         }
2078         else {
2079             goto error2;
2080         }
2081         // Clean up.
2082         if (!isFast)
2083             Py_DECREF(o);
2084     }
2085     return temp;
2086
2087 error3:
2088     Py_DECREF(o1);
2089     Py_DECREF(o2);
2090 error2:
2091     if (!isFast)
2092         Py_DECREF(o);
2093 error1:
2094     delete [] temp;
2095 error0:
2096     PyErr_SetString(PyExc_TypeError, "Expected a sequence of length-2 sequences or wxPoints.");
2097     return NULL;
2098 }
2099 // end of patch
2100 //------------------------------
2101
2102
2103 wxBitmap** wxBitmap_LIST_helper(PyObject* source) {
2104     if (!PyList_Check(source)) {
2105         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
2106         return NULL;
2107     }
2108     int count = PyList_Size(source);
2109     wxBitmap** temp = new wxBitmap*[count];
2110     if (! temp) {
2111         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
2112         return NULL;
2113     }
2114     for (int x=0; x<count; x++) {
2115         PyObject* o = PyList_GetItem(source, x);
2116         if (wxPySwigInstance_Check(o)) {
2117             wxBitmap*    pt;
2118             if (! wxPyConvertSwigPtr(o, (void **) &pt, wxT("wxBitmap"))) {
2119                 PyErr_SetString(PyExc_TypeError,"Expected wxBitmap.");
2120                 return NULL;
2121             }
2122             temp[x] = pt;
2123         }
2124         else {
2125             PyErr_SetString(PyExc_TypeError, "Expected a list of wxBitmaps.");
2126             return NULL;
2127         }
2128     }
2129     return temp;
2130 }
2131
2132
2133
2134 wxString* wxString_LIST_helper(PyObject* source) {
2135     if (!PyList_Check(source)) {
2136         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
2137         return NULL;
2138     }
2139     int count = PyList_Size(source);
2140     wxString* temp = new wxString[count];
2141     if (! temp) {
2142         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
2143         return NULL;
2144     }
2145     for (int x=0; x<count; x++) {
2146         PyObject* o = PyList_GetItem(source, x);
2147 #if PYTHON_API_VERSION >= 1009
2148         if (! PyString_Check(o) && ! PyUnicode_Check(o)) {
2149             PyErr_SetString(PyExc_TypeError, "Expected a list of string or unicode objects.");
2150             return NULL;
2151         }
2152 #else
2153         if (! PyString_Check(o)) {
2154             PyErr_SetString(PyExc_TypeError, "Expected a list of strings.");
2155             return NULL;
2156         }
2157 #endif
2158
2159         wxString* pStr = wxString_in_helper(o);
2160         temp[x] = *pStr;
2161         delete pStr;
2162     }
2163     return temp;
2164 }
2165
2166
2167 wxAcceleratorEntry* wxAcceleratorEntry_LIST_helper(PyObject* source) {
2168     if (!PyList_Check(source)) {
2169         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
2170         return NULL;
2171     }
2172     int count                = PyList_Size(source);
2173     wxAcceleratorEntry* temp = new wxAcceleratorEntry[count];
2174     if (! temp) {
2175         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
2176         return NULL;
2177     }
2178     for (int x=0; x<count; x++) {
2179         PyObject* o = PyList_GetItem(source, x);
2180         if (wxPySwigInstance_Check(o)) {
2181             wxAcceleratorEntry* ae;
2182             if (! wxPyConvertSwigPtr(o, (void **) &ae, wxT("wxAcceleratorEntry"))) {
2183                 PyErr_SetString(PyExc_TypeError,"Expected wxAcceleratorEntry.");
2184                 return NULL;
2185             }
2186             temp[x] = *ae;
2187         }
2188         else if (PyTuple_Check(o)) {
2189             PyObject* o1 = PyTuple_GetItem(o, 0);
2190             PyObject* o2 = PyTuple_GetItem(o, 1);
2191             PyObject* o3 = PyTuple_GetItem(o, 2);
2192             temp[x].Set(PyInt_AsLong(o1), PyInt_AsLong(o2), PyInt_AsLong(o3));
2193         }
2194         else {
2195             PyErr_SetString(PyExc_TypeError, "Expected a list of 3-tuples or wxAcceleratorEntry objects.");
2196             return NULL;
2197         }
2198     }
2199     return temp;
2200 }
2201
2202
2203 wxPen** wxPen_LIST_helper(PyObject* source) {
2204     if (!PyList_Check(source)) {
2205         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
2206         return NULL;
2207     }
2208     int count = PyList_Size(source);
2209     wxPen** temp = new wxPen*[count];
2210     if (!temp) {
2211         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
2212         return NULL;
2213     }
2214     for (int x=0; x<count; x++) {
2215         PyObject* o = PyList_GetItem(source, x);
2216         if (wxPySwigInstance_Check(o)) {
2217             wxPen*  pt;
2218             if (! wxPyConvertSwigPtr(o, (void **)&pt, wxT("wxPen"))) {
2219                 delete temp;
2220                 PyErr_SetString(PyExc_TypeError,"Expected wxPen.");
2221                 return NULL;
2222             }
2223             temp[x] = pt;
2224         }
2225         else {
2226             delete temp;
2227             PyErr_SetString(PyExc_TypeError, "Expected a list of wxPens.");
2228             return NULL;
2229         }
2230     }
2231     return temp;
2232 }
2233
2234
2235 bool wxPy2int_seq_helper(PyObject* source, int* i1, int* i2) {
2236     bool isFast = PyList_Check(source) || PyTuple_Check(source);
2237     PyObject *o1, *o2;
2238
2239     if (!PySequence_Check(source) || PySequence_Length(source) != 2)
2240         return False;
2241
2242     if (isFast) {
2243         o1 = PySequence_Fast_GET_ITEM(source, 0);
2244         o2 = PySequence_Fast_GET_ITEM(source, 1);
2245     }
2246     else {
2247         o1 = PySequence_GetItem(source, 0);
2248         o2 = PySequence_GetItem(source, 1);
2249     }
2250
2251     *i1 = PyInt_AsLong(o1);
2252     *i2 = PyInt_AsLong(o2);
2253
2254     if (! isFast) {
2255         Py_DECREF(o1);
2256         Py_DECREF(o2);
2257     }
2258     return True;
2259 }
2260
2261
2262 bool wxPy4int_seq_helper(PyObject* source, int* i1, int* i2, int* i3, int* i4) {
2263     bool isFast = PyList_Check(source) || PyTuple_Check(source);
2264     PyObject *o1, *o2, *o3, *o4;
2265
2266     if (!PySequence_Check(source) || PySequence_Length(source) != 4)
2267         return False;
2268
2269     if (isFast) {
2270         o1 = PySequence_Fast_GET_ITEM(source, 0);
2271         o2 = PySequence_Fast_GET_ITEM(source, 1);
2272         o3 = PySequence_Fast_GET_ITEM(source, 2);
2273         o4 = PySequence_Fast_GET_ITEM(source, 3);
2274     }
2275     else {
2276         o1 = PySequence_GetItem(source, 0);
2277         o2 = PySequence_GetItem(source, 1);
2278         o3 = PySequence_GetItem(source, 2);
2279         o4 = PySequence_GetItem(source, 3);
2280     }
2281
2282     *i1 = PyInt_AsLong(o1);
2283     *i2 = PyInt_AsLong(o2);
2284     *i3 = PyInt_AsLong(o3);
2285     *i4 = PyInt_AsLong(o4);
2286
2287     if (! isFast) {
2288         Py_DECREF(o1);
2289         Py_DECREF(o2);
2290         Py_DECREF(o3);
2291         Py_DECREF(o4);
2292     }
2293     return True;
2294 }
2295
2296
2297 //----------------------------------------------------------------------
2298
2299 bool wxPySimple_typecheck(PyObject* source, const wxChar* classname, int seqLen)
2300 {
2301     void* ptr;
2302
2303     if (wxPySwigInstance_Check(source) &&
2304         wxPyConvertSwigPtr(source, (void **)&ptr, classname))
2305         return True;
2306
2307     PyErr_Clear();
2308     if (PySequence_Check(source) && PySequence_Length(source) == seqLen)
2309         return True;
2310
2311     return False;
2312 }
2313
2314 bool wxSize_helper(PyObject* source, wxSize** obj)
2315 {
2316     if (source == Py_None) {
2317         **obj = wxSize(-1,-1);
2318         return True;
2319     }
2320     return wxPyTwoIntItem_helper(source, obj, wxT("wxSize"));
2321 }
2322
2323
2324 bool wxPoint_helper(PyObject* source, wxPoint** obj)
2325 {
2326     if (source == Py_None) {
2327         **obj = wxPoint(-1,-1);
2328         return True;
2329     }
2330     return wxPyTwoIntItem_helper(source, obj, wxT("wxPoint"));
2331 }
2332
2333
2334
2335 bool wxRealPoint_helper(PyObject* source, wxRealPoint** obj) {
2336
2337     if (source == Py_None) {
2338         **obj = wxRealPoint(-1,-1);
2339         return True;
2340     }
2341
2342     // If source is an object instance then it may already be the right type
2343     if (wxPySwigInstance_Check(source)) {
2344         wxRealPoint* ptr;
2345         if (! wxPyConvertSwigPtr(source, (void **)&ptr, wxT("wxRealPoint")))
2346             goto error;
2347         *obj = ptr;
2348         return True;
2349     }
2350     // otherwise a 2-tuple of floats is expected
2351     else if (PySequence_Check(source) && PyObject_Length(source) == 2) {
2352         PyObject* o1 = PySequence_GetItem(source, 0);
2353         PyObject* o2 = PySequence_GetItem(source, 1);
2354         if (!PyNumber_Check(o1) || !PyNumber_Check(o2)) {
2355             Py_DECREF(o1);
2356             Py_DECREF(o2);
2357             goto error;
2358         }
2359         **obj = wxRealPoint(PyFloat_AsDouble(o1), PyFloat_AsDouble(o2));
2360         Py_DECREF(o1);
2361         Py_DECREF(o2);
2362         return True;
2363     }
2364
2365  error:
2366     PyErr_SetString(PyExc_TypeError, "Expected a 2-tuple of floats or a wxRealPoint object.");
2367     return False;
2368 }
2369
2370
2371
2372 bool wxRect_helper(PyObject* source, wxRect** obj) {
2373
2374     if (source == Py_None) {
2375         **obj = wxRect(-1,-1,-1,-1);
2376         return True;
2377     }
2378
2379     // If source is an object instance then it may already be the right type
2380     if (wxPySwigInstance_Check(source)) {
2381         wxRect* ptr;
2382         if (! wxPyConvertSwigPtr(source, (void **)&ptr, wxT("wxRect")))
2383             goto error;
2384         *obj = ptr;
2385         return True;
2386     }
2387     // otherwise a 4-tuple of integers is expected
2388     else if (PySequence_Check(source) && PyObject_Length(source) == 4) {
2389         PyObject* o1 = PySequence_GetItem(source, 0);
2390         PyObject* o2 = PySequence_GetItem(source, 1);
2391         PyObject* o3 = PySequence_GetItem(source, 2);
2392         PyObject* o4 = PySequence_GetItem(source, 3);
2393         if (!PyNumber_Check(o1) || !PyNumber_Check(o2) ||
2394             !PyNumber_Check(o3) || !PyNumber_Check(o4)) {
2395             Py_DECREF(o1);
2396             Py_DECREF(o2);
2397             Py_DECREF(o3);
2398             Py_DECREF(o4);
2399             goto error;
2400         }
2401         **obj = wxRect(PyInt_AsLong(o1), PyInt_AsLong(o2),
2402                        PyInt_AsLong(o3), PyInt_AsLong(o4));
2403         Py_DECREF(o1);
2404         Py_DECREF(o2);
2405         Py_DECREF(o3);
2406         Py_DECREF(o4);
2407         return True;
2408     }
2409
2410  error:
2411     PyErr_SetString(PyExc_TypeError, "Expected a 4-tuple of integers or a wxRect object.");
2412     return False;
2413 }
2414
2415
2416
2417 bool wxColour_helper(PyObject* source, wxColour** obj) {
2418
2419     if (source == Py_None) {
2420         **obj = wxNullColour;
2421         return True;
2422     }
2423
2424     // If source is an object instance then it may already be the right type
2425     if (wxPySwigInstance_Check(source)) {
2426         wxColour* ptr;
2427         if (! wxPyConvertSwigPtr(source, (void **)&ptr, wxT("wxColour")))
2428             goto error;
2429         *obj = ptr;
2430         return True;
2431     }
2432     // otherwise check for a string
2433     else if (PyString_Check(source) || PyUnicode_Check(source)) {
2434         wxString spec = Py2wxString(source);
2435         if (spec.GetChar(0) == '#' && spec.Length() == 7) {  // It's  #RRGGBB
2436             long red, green, blue;
2437             red = green = blue = 0;
2438             spec.Mid(1,2).ToLong(&red,   16);
2439             spec.Mid(3,2).ToLong(&green, 16);
2440             spec.Mid(5,2).ToLong(&blue,  16);
2441
2442             **obj = wxColour(red, green, blue);
2443             return True;
2444         }
2445         else {                                       // it's a colour name
2446             **obj = wxColour(spec);
2447             return True;
2448         }
2449     }
2450     // last chance: 3-tuple of integers is expected
2451     else if (PySequence_Check(source) && PyObject_Length(source) == 3) {
2452         PyObject* o1 = PySequence_GetItem(source, 0);
2453         PyObject* o2 = PySequence_GetItem(source, 1);
2454         PyObject* o3 = PySequence_GetItem(source, 2);
2455         if (!PyNumber_Check(o1) || !PyNumber_Check(o2) || !PyNumber_Check(o3)) {
2456             Py_DECREF(o1);
2457             Py_DECREF(o2);
2458             Py_DECREF(o3);
2459             goto error;
2460         }
2461         **obj = wxColour(PyInt_AsLong(o1), PyInt_AsLong(o2), PyInt_AsLong(o3));
2462         Py_DECREF(o1);
2463         Py_DECREF(o2);
2464         Py_DECREF(o3);
2465         return True;
2466     }
2467
2468  error:
2469     PyErr_SetString(PyExc_TypeError,
2470                     "Expected a wxColour object or a string containing a colour name or '#RRGGBB'.");
2471     return False;
2472 }
2473
2474
2475 bool wxColour_typecheck(PyObject* source) {
2476
2477     if (wxPySimple_typecheck(source, wxT("wxColour"), 3))
2478         return True;
2479
2480     if (PyString_Check(source) || PyUnicode_Check(source))
2481         return True;
2482
2483     return False;
2484 }
2485
2486
2487
2488 bool wxPoint2D_helper(PyObject* source, wxPoint2D** obj) {
2489
2490     if (source == Py_None) {
2491         **obj = wxPoint2D(-1,-1);
2492         return True;
2493     }
2494
2495     // If source is an object instance then it may already be the right type
2496     if (wxPySwigInstance_Check(source)) {
2497         wxPoint2D* ptr;
2498         if (! wxPyConvertSwigPtr(source, (void **)&ptr, wxT("wxPoint2D")))
2499             goto error;
2500         *obj = ptr;
2501         return True;
2502     }
2503     // otherwise a length-2 sequence of floats is expected
2504     if (PySequence_Check(source) && PySequence_Length(source) == 2) {
2505         PyObject* o1 = PySequence_GetItem(source, 0);
2506         PyObject* o2 = PySequence_GetItem(source, 1);
2507         // This should really check for floats, not numbers -- but that would break code.
2508         if (!PyNumber_Check(o1) || !PyNumber_Check(o2)) {
2509             Py_DECREF(o1);
2510             Py_DECREF(o2);
2511             goto error;
2512         }
2513         **obj = wxPoint2D(PyFloat_AsDouble(o1), PyFloat_AsDouble(o2));
2514         Py_DECREF(o1);
2515         Py_DECREF(o2);
2516         return True;
2517     }
2518  error:
2519     PyErr_SetString(PyExc_TypeError, "Expected a 2-tuple of floats or a wxPoint2D object.");
2520     return False;
2521 }
2522
2523
2524 //----------------------------------------------------------------------
2525
2526 PyObject* wxArrayString2PyList_helper(const wxArrayString& arr) {
2527
2528     PyObject* list = PyList_New(0);
2529     for (size_t i=0; i < arr.GetCount(); i++) {
2530 #if wxUSE_UNICODE
2531         PyObject* str = PyUnicode_FromWideChar(arr[i].c_str(), arr[i].Len());
2532 #else
2533         PyObject* str = PyString_FromStringAndSize(arr[i].c_str(), arr[i].Len());
2534 #endif
2535         PyList_Append(list, str);
2536         Py_DECREF(str);
2537     }
2538     return list;
2539 }
2540
2541
2542 PyObject* wxArrayInt2PyList_helper(const wxArrayInt& arr) {
2543
2544     PyObject* list = PyList_New(0);
2545     for (size_t i=0; i < arr.GetCount(); i++) {
2546         PyObject* number = PyInt_FromLong(arr[i]);
2547         PyList_Append(list, number);
2548         Py_DECREF(number);
2549     }
2550     return list;
2551 }
2552
2553
2554 //----------------------------------------------------------------------
2555 //----------------------------------------------------------------------
2556
2557
2558
2559