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
  14 #undef DEBUG
  15 #include <Python.h>
  16 #include "helpers.h"
  17 #include "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 #include <wx/clipbrd.h>
  32 #include <wx/mimetype.h>
  33 #include <wx/image.h>
  34
  35 //----------------------------------------------------------------------
  36
  37 #if PYTHON_API_VERSION <= 1007 && wxUSE_UNICODE
  38 #error Python must support Unicode to use wxWindows Unicode
  39 #endif
  40
  41 //----------------------------------------------------------------------
  42
  43 wxPyApp* wxPythonApp = NULL;  // Global instance of application object
  44 bool wxPyDoCleanup = FALSE;
  45 bool wxPyDoingCleanup = FALSE;
  46
  47
  48 #ifdef WXP_WITH_THREAD
  49 struct wxPyThreadState {
  50     unsigned long  tid;
  51     PyThreadState* tstate;
  52
  53     wxPyThreadState(unsigned long _tid=0, PyThreadState* _tstate=NULL)
  54         : tid(_tid), tstate(_tstate) {}
  55 };
  56
  57 #include <wx/dynarray.h>
  58 WX_DECLARE_OBJARRAY(wxPyThreadState, wxPyThreadStateArray);
  59 #include <wx/arrimpl.cpp>
  60 WX_DEFINE_OBJARRAY(wxPyThreadStateArray);
  61
  62 wxPyThreadStateArray* wxPyTStates = NULL;
  63 wxMutex*              wxPyTMutex = NULL;
  64 #endif
  65
  66
  67 static PyObject* wxPython_dict = NULL;
  68 static PyObject* wxPyPtrTypeMap = NULL;
  69 static PyObject* wxPyAssertionError = NULL;
  70
  71
  72 #ifdef __WXMSW__             // If building for win32...
  73 //----------------------------------------------------------------------
  74 // This gets run when the DLL is loaded.  We just need to save a handle.
  75 //----------------------------------------------------------------------
  76
  77 BOOL WINAPI DllMain(
  78     HINSTANCE   hinstDLL,    // handle to DLL module
  79     DWORD       fdwReason,   // reason for calling function
  80     LPVOID      lpvReserved  // reserved
  81    )
  82 {
  83     // If wxPython is embedded in another wxWindows app then
  84     // the inatance has already been set.
  85     if (! wxGetInstance())
  86         wxSetInstance(hinstDLL);
  87     return TRUE;
  88 }
  89 #endif
  90
  91 //----------------------------------------------------------------------
  92 // Classes for implementing the wxp main application shell.
  93 //----------------------------------------------------------------------
  94
  95 IMPLEMENT_ABSTRACT_CLASS(wxPyApp, wxApp);
  96
  97
  98 wxPyApp::wxPyApp() {
  99     m_assertMode = wxPYAPP_ASSERT_EXCEPTION;
 100 }
 101
 102
 103 wxPyApp::~wxPyApp() {
 104 }
 105
 106
 107 // This one isn't acutally called...  We fake it with __wxStart()
 108 bool wxPyApp::OnInit() {
 109     return FALSE;
 110 }
 111
 112
 113 int  wxPyApp::MainLoop() {
 114     int retval = 0;
 115
 116     DeletePendingObjects();
 117     bool initialized = wxTopLevelWindows.GetCount() != 0;
 118 #ifdef __WXGTK__
 119     m_initialized = initialized;
 120 #endif
 121
 122     if (initialized) {
 123         if ( m_exitOnFrameDelete == Later ) {
 124             m_exitOnFrameDelete = Yes;
 125         }
 126
 127         retval = wxApp::MainLoop();
 128         OnExit();
 129     }
 130     return retval;
 131 }
 132
 133
 134 bool wxPyApp::OnInitGui() {
 135     bool rval=TRUE;
 136     wxApp::OnInitGui();  // in this case always call the base class version
 137     // wxPyBeginBlockThreads();  *** only called from within __wxStart so we already have the GIL
 138     if (wxPyCBH_findCallback(m_myInst, "OnInitGui"))
 139         rval = wxPyCBH_callCallback(m_myInst, Py_BuildValue("()"));
 140     // wxPyEndBlockThreads();    ***
 141     return rval;
 142 }
 143
 144
 145 int wxPyApp::OnExit() {
 146     int rval=0;
 147     wxPyBeginBlockThreads();
 148     if (wxPyCBH_findCallback(m_myInst, "OnExit"))
 149         rval = wxPyCBH_callCallback(m_myInst, Py_BuildValue("()"));
 150     wxPyEndBlockThreads();
 151     wxApp::OnExit();  // in this case always call the base class version
 152     return rval;
 153 }
 154
 155
 156 #ifdef __WXDEBUG__
 157 void wxPyApp::OnAssert(const wxChar *file,
 158                      int line,
 159                      const wxChar *cond,
 160                      const wxChar *msg) {
 161
 162     // If the OnAssert is overloaded in the Python class then call it...
 163     bool found;
 164     wxPyBeginBlockThreads();
 165     if ((found = wxPyCBH_findCallback(m_myInst, "OnAssert"))) {
 166         PyObject* fso = wx2PyString(file);
 167         PyObject* cso = wx2PyString(file);
 168         PyObject* mso;
 169         if (msg != NULL)
 170             mso = wx2PyString(file);
 171         else {
 172             mso = Py_None; Py_INCREF(Py_None);
 173         }
 174         wxPyCBH_callCallback(m_myInst, Py_BuildValue("(OiOO)", fso, line, cso, mso));
 175         Py_DECREF(fso);
 176         Py_DECREF(cso);
 177         Py_DECREF(mso);
 178     }
 179     wxPyEndBlockThreads();
 180
 181     // ...otherwise do our own thing with it
 182     if (! found) {
 183         // ignore it?
 184         if (m_assertMode & wxPYAPP_ASSERT_SUPPRESS)
 185             return;
 186
 187         // turn it into a Python exception?
 188         if (m_assertMode & wxPYAPP_ASSERT_EXCEPTION) {
 189             wxString buf;
 190             buf.Alloc(4096);
 191             buf.Printf(wxT("C++ assertion \"%s\" failed in %s(%d)"), cond, file, line);
 192             if (msg != NULL) {
 193                 buf += wxT(": ");
 194                 buf += msg;
 195             }
 196
 197             // set the exception
 198             wxPyBeginBlockThreads();
 199             PyObject* s = wx2PyString(buf);
 200             PyErr_SetObject(wxPyAssertionError, s);
 201             Py_DECREF(s);
 202             wxPyEndBlockThreads();
 203
 204             // Now when control returns to whatever API wrapper was called from
 205             // Python it should detect that an exception is set and will return
 206             // NULL, signalling the exception to Python.
 207         }
 208
 209         // Send it to the normal log destination, but only if
 210         // not _DIALOG because it will call this too
 211         if ( (m_assertMode & wxPYAPP_ASSERT_LOG) && !(m_assertMode & wxPYAPP_ASSERT_DIALOG)) {
 212             wxString buf;
 213             buf.Alloc(4096);
 214             buf.Printf(wxT("%s(%d): assert \"%s\" failed"),
 215                        file, line, cond);
 216             if (msg != NULL) {
 217                 buf += wxT(": ");
 218                 buf += msg;
 219             }
 220             wxLogDebug(buf);
 221         }
 222
 223         // do the normal wx assert dialog?
 224         if (m_assertMode & wxPYAPP_ASSERT_DIALOG)
 225             wxApp::OnAssert(file, line, cond, msg);
 226     }
 227 }
 228 #endif
 229
 230
 231 /*static*/
 232 bool wxPyApp::GetMacDefaultEncodingIsPC() {
 233 #ifdef __WXMAC__
 234     return s_macDefaultEncodingIsPC;
 235 #else
 236     return 0;
 237 #endif
 238 }
 239
 240 /*static*/
 241 bool wxPyApp::GetMacSupportPCMenuShortcuts() {
 242 #ifdef __WXMAC__
 243     return s_macSupportPCMenuShortcuts;
 244 #else
 245     return 0;
 246 #endif
 247 }
 248
 249 /*static*/
 250 long wxPyApp::GetMacAboutMenuItemId() {
 251 #ifdef __WXMAC__
 252     return s_macAboutMenuItemId;
 253 #else
 254     return 0;
 255 #endif
 256 }
 257
 258 /*static*/
 259 long wxPyApp::GetMacPreferencesMenuItemId() {
 260 #ifdef __WXMAC__
 261     return s_macPreferencesMenuItemId;
 262 #else
 263     return 0;
 264 #endif
 265 }
 266
 267 /*static*/
 268 long wxPyApp::GetMacExitMenuItemId() {
 269 #ifdef __WXMAC__
 270     return s_macExitMenuItemId;
 271 #else
 272     return 0;
 273 #endif
 274 }
 275
 276 /*static*/
 277 wxString wxPyApp::GetMacHelpMenuTitleName() {
 278 #ifdef __WXMAC__
 279     return s_macHelpMenuTitleName;
 280 #else
 281     return wxEmptyString;
 282 #endif
 283 }
 284
 285 /*static*/
 286 void wxPyApp::SetMacDefaultEncodingIsPC(bool val) {
 287 #ifdef __WXMAC__
 288     s_macDefaultEncodingIsPC = val;
 289 #endif
 290 }
 291
 292 /*static*/
 293 void wxPyApp::SetMacSupportPCMenuShortcuts(bool val) {
 294 #ifdef __WXMAC__
 295     s_macSupportPCMenuShortcuts = val;
 296 #endif
 297 }
 298
 299 /*static*/
 300 void wxPyApp::SetMacAboutMenuItemId(long val) {
 301 #ifdef __WXMAC__
 302     s_macAboutMenuItemId = val;
 303 #endif
 304 }
 305
 306 /*static*/
 307 void wxPyApp::SetMacPreferencesMenuItemId(long val) {
 308 #ifdef __WXMAC__
 309     s_macPreferencesMenuItemId = val;
 310 #endif
 311 }
 312
 313 /*static*/
 314 void wxPyApp::SetMacExitMenuItemId(long val) {
 315 #ifdef __WXMAC__
 316     s_macExitMenuItemId = val;
 317 #endif
 318 }
 319
 320 /*static*/
 321 void wxPyApp::SetMacHelpMenuTitleName(const wxString& val) {
 322 #ifdef __WXMAC__
 323     s_macHelpMenuTitleName = val;
 324 #endif
 325 }
 326
 327
 328
 329 //---------------------------------------------------------------------
 330 //----------------------------------------------------------------------
 331
 332
 333 #if 0
 334 static char* wxPyCopyCString(const wxChar* src)
 335 {
 336     wxWX2MBbuf buff = (wxWX2MBbuf)wxConvCurrent->cWX2MB(src);
 337     size_t len = strlen(buff);
 338     char*  dest = new char[len+1];
 339     strcpy(dest, buff);
 340     return dest;
 341 }
 342
 343 #if wxUSE_UNICODE
 344 static char* wxPyCopyCString(const char* src)   // we need a char version too
 345 {
 346     size_t len = strlen(src);
 347     char*  dest = new char[len+1];
 348     strcpy(dest, src);
 349     return dest;
 350 }
 351 #endif
 352
 353 static wxChar* wxPyCopyWString(const char *src)
 354 {
 355     //wxMB2WXbuf buff = wxConvCurrent->cMB2WX(src);
 356     wxString str(src, *wxConvCurrent);
 357     return copystring(str);
 358 }
 359
 360 #if wxUSE_UNICODE
 361 static wxChar* wxPyCopyWString(const wxChar *src)
 362 {
 363     return copystring(src);
 364 }
 365 #endif
 366 #endif
 367
 368
 369 //----------------------------------------------------------------------
 370
 371 // This function is called when the wxc module is imported to do some initial
 372 // setup.  (Before there is a wxApp object.)
 373 void __wxPreStart(PyObject* moduleDict)
 374 {
 375
 376 #ifdef __WXMSW__
 377 //    wxCrtSetDbgFlag(_CRTDBG_LEAK_CHECK_DF);
 378 #endif
 379
 380 #ifdef WXP_WITH_THREAD
 381     PyEval_InitThreads();
 382     wxPyTStates = new wxPyThreadStateArray;
 383     wxPyTMutex = new wxMutex;
 384 #endif
 385
 386     // Ensure that the build options in the DLL (or whatever) match this build
 387     wxApp::CheckBuildOptions(WX_BUILD_OPTIONS_SIGNATURE, "wxPython");
 388
 389     // Create an exception object to use for wxASSERTions
 390     wxPyAssertionError = PyErr_NewException("wxPython.wxc.wxPyAssertionError",
 391                                             PyExc_AssertionError, NULL);
 392     PyDict_SetItemString(moduleDict, "wxPyAssertionError", wxPyAssertionError);
 393 }
 394
 395
 396
 397 // Initialize wxWindows and bootstrap the user application by calling the
 398 // wxApp's OnInit, which is a parameter to this funciton.  See wxApp.__init__
 399 // in _extras.py to learn how the bootstrap is started.
 400 PyObject* __wxStart(PyObject* /* self */, PyObject* args)
 401 {
 402     PyObject*   onInitFunc = NULL;
 403     PyObject*   arglist= NULL;
 404     PyObject*   result = NULL;
 405     PyObject*   pyint = NULL;
 406     long        bResult;
 407
 408     if (!PyArg_ParseTuple(args, "O", &onInitFunc))
 409         return NULL;
 410
 411     // Get any command-line args passed to this program from the sys module
 412     int argc = 0;
 413     char** argv = NULL;
 414     PyObject* sysargv = PySys_GetObject("argv");
 415     if (sysargv != NULL) {
 416         argc = PyList_Size(sysargv);
 417         argv = new char*[argc+1];
 418         int x;
 419         for(x=0; x<argc; x++) {
 420             PyObject *pyArg = PyList_GetItem(sysargv, x);
 421             argv[x] = PyString_AsString(pyArg);
 422         }
 423         argv[argc] = NULL;
 424     }
 425
 426     if (! wxEntryStart(argc, argv) ) {
 427         PyErr_SetString(PyExc_SystemError,      // is this the right one?
 428                         "wxEntryStart failed!");
 429         goto error;
 430     }
 431     delete [] argv;
 432
 433
 434     // The stock objects were all NULL when they were loaded into
 435     // SWIG generated proxies, so re-init those now...
 436     wxPy_ReinitStockObjects();
 437
 438
 439     // Call the Python wxApp's OnInit function
 440     arglist = PyTuple_New(0);
 441     result = PyEval_CallObject(onInitFunc, arglist);
 442     Py_DECREF(arglist);
 443     if (!result) {      // an exception was raised.
 444         return NULL;
 445     }
 446
 447     pyint = PyNumber_Int(result);
 448     if (! pyint) {
 449         PyErr_SetString(PyExc_TypeError, "OnInit should return a boolean value");
 450         goto error;
 451     }
 452     bResult = PyInt_AS_LONG(pyint);
 453     if (! bResult) {
 454         PyErr_SetString(PyExc_SystemExit, "OnInit returned FALSE, exiting...");
 455         goto error;
 456     }
 457
 458 #ifdef __WXGTK__
 459     wxTheApp->m_initialized = (wxTopLevelWindows.GetCount() > 0);
 460 #endif
 461
 462     Py_DECREF(result);
 463     Py_DECREF(pyint);
 464     Py_INCREF(Py_None);
 465     return Py_None;
 466
 467  error:
 468     Py_XDECREF(result);
 469     Py_XDECREF(pyint);
 470     return NULL;
 471 }
 472
 473
 474
 475 void __wxCleanup() {
 476     wxPyDoingCleanup = TRUE;
 477     if (wxPyDoCleanup)
 478         wxEntryCleanup();
 479 #ifdef WXP_WITH_THREAD
 480     delete wxPyTMutex;
 481     wxPyTMutex = NULL;
 482     wxPyTStates->Empty();
 483     delete wxPyTStates;
 484     wxPyTStates = NULL;
 485 #endif
 486 }
 487
 488
 489
 490
 491 PyObject* __wxSetDictionary(PyObject* /* self */, PyObject* args)
 492 {
 493
 494     if (!PyArg_ParseTuple(args, "O", &wxPython_dict))
 495         return NULL;
 496
 497     if (!PyDict_Check(wxPython_dict)) {
 498         PyErr_SetString(PyExc_TypeError, "_wxSetDictionary must have dictionary object!");
 499         return NULL;
 500     }
 501
 502     if (! wxPyPtrTypeMap)
 503         wxPyPtrTypeMap = PyDict_New();
 504     PyDict_SetItemString(wxPython_dict, "__wxPyPtrTypeMap", wxPyPtrTypeMap);
 505
 506
 507 #ifdef __WXMOTIF__
 508 #define wxPlatform "__WXMOTIF__"
 509 #endif
 510 #ifdef __WXX11__
 511 #define wxPlatform "__WXX11__"
 512 #endif
 513 #ifdef __WXGTK__
 514 #define wxPlatform "__WXGTK__"
 515 #endif
 516 #if defined(__WIN32__) || defined(__WXMSW__)
 517 #define wxPlatform "__WXMSW__"
 518 #endif
 519 #ifdef __WXMAC__
 520 #define wxPlatform "__WXMAC__"
 521 #endif
 522
 523 #ifdef __WXDEBUG__
 524     int wxdebug = 1;
 525 #else
 526     int wxdebug = 0;
 527 #endif
 528
 529     PyDict_SetItemString(wxPython_dict, "wxPlatform", PyString_FromString(wxPlatform));
 530     PyDict_SetItemString(wxPython_dict, "wxUSE_UNICODE", PyInt_FromLong(wxUSE_UNICODE));
 531     PyDict_SetItemString(wxPython_dict, "__WXDEBUG__", PyInt_FromLong(wxdebug));
 532
 533     Py_INCREF(Py_None);
 534     return Py_None;
 535 }
 536
 537
 538 //---------------------------------------------------------------------------
 539
 540 // The stock objects are no longer created when the wxc module is imported, but
 541 // only after the app object has been created.  This function will be called before
 542 // OnInit is called so we can hack the new pointer values into the obj.this attributes.
 543
 544 void wxPy_ReinitStockObjects()
 545 {
 546     char ptrbuf[128];
 547     PyObject* obj;
 548     PyObject* ptrobj;
 549
 550
 551
 552 #define REINITOBJ(name, type) \
 553     obj = PyDict_GetItemString(wxPython_dict, #name); \
 554     wxASSERT_MSG(obj != NULL, wxT("Unable to find stock object for " #name)); \
 555     SWIG_MakePtr(ptrbuf, (char *) name, "_" #type "_p"); \
 556     ptrobj = PyString_FromString(ptrbuf); \
 557     PyObject_SetAttrString(obj, "this", ptrobj); \
 558     Py_DECREF(ptrobj)
 559
 560 #define REINITOBJ2(name, type) \
 561     obj = PyDict_GetItemString(wxPython_dict, #name); \
 562     wxASSERT_MSG(obj != NULL, wxT("Unable to find stock object for " #name)); \
 563     SWIG_MakePtr(ptrbuf, (char *) &name, "_" #type "_p"); \
 564     ptrobj = PyString_FromString(ptrbuf); \
 565     PyObject_SetAttrString(obj, "this", ptrobj); \
 566     Py_DECREF(ptrobj)
 567
 568
 569     REINITOBJ(wxNORMAL_FONT, wxFont);
 570     REINITOBJ(wxSMALL_FONT, wxFont);
 571     REINITOBJ(wxITALIC_FONT, wxFont);
 572     REINITOBJ(wxSWISS_FONT, wxFont);
 573
 574     REINITOBJ(wxRED_PEN, wxPen);
 575     REINITOBJ(wxCYAN_PEN, wxPen);
 576     REINITOBJ(wxGREEN_PEN, wxPen);
 577     REINITOBJ(wxBLACK_PEN, wxPen);
 578     REINITOBJ(wxWHITE_PEN, wxPen);
 579     REINITOBJ(wxTRANSPARENT_PEN, wxPen);
 580     REINITOBJ(wxBLACK_DASHED_PEN, wxPen);
 581     REINITOBJ(wxGREY_PEN, wxPen);
 582     REINITOBJ(wxMEDIUM_GREY_PEN, wxPen);
 583     REINITOBJ(wxLIGHT_GREY_PEN, wxPen);
 584
 585     REINITOBJ(wxBLUE_BRUSH, wxBrush);
 586     REINITOBJ(wxGREEN_BRUSH, wxBrush);
 587     REINITOBJ(wxWHITE_BRUSH, wxBrush);
 588     REINITOBJ(wxBLACK_BRUSH, wxBrush);
 589     REINITOBJ(wxTRANSPARENT_BRUSH, wxBrush);
 590     REINITOBJ(wxCYAN_BRUSH, wxBrush);
 591     REINITOBJ(wxRED_BRUSH, wxBrush);
 592     REINITOBJ(wxGREY_BRUSH, wxBrush);
 593     REINITOBJ(wxMEDIUM_GREY_BRUSH, wxBrush);
 594     REINITOBJ(wxLIGHT_GREY_BRUSH, wxBrush);
 595
 596     REINITOBJ(wxBLACK, wxColour);
 597     REINITOBJ(wxWHITE, wxColour);
 598     REINITOBJ(wxRED, wxColour);
 599     REINITOBJ(wxBLUE, wxColour);
 600     REINITOBJ(wxGREEN, wxColour);
 601     REINITOBJ(wxCYAN, wxColour);
 602     REINITOBJ(wxLIGHT_GREY, wxColour);
 603
 604     REINITOBJ(wxSTANDARD_CURSOR, wxCursor);
 605     REINITOBJ(wxHOURGLASS_CURSOR, wxCursor);
 606     REINITOBJ(wxCROSS_CURSOR, wxCursor);
 607
 608     REINITOBJ2(wxNullBitmap, wxBitmap);
 609     REINITOBJ2(wxNullIcon, wxIcon);
 610     REINITOBJ2(wxNullCursor, wxCursor);
 611     REINITOBJ2(wxNullPen, wxPen);
 612     REINITOBJ2(wxNullBrush, wxBrush);
 613     REINITOBJ2(wxNullPalette, wxPalette);
 614     REINITOBJ2(wxNullFont, wxFont);
 615     REINITOBJ2(wxNullColour, wxColour);
 616
 617     REINITOBJ(wxTheFontList, wxFontList);
 618     REINITOBJ(wxThePenList, wxPenList);
 619     REINITOBJ(wxTheBrushList, wxBrushList);
 620     REINITOBJ(wxTheColourDatabase, wxColourDatabase);
 621
 622
 623     REINITOBJ(wxTheClipboard, wxClipboard);
 624     REINITOBJ(wxTheMimeTypesManager, wxMimeTypesManager);
 625     REINITOBJ2(wxDefaultValidator, wxValidator);
 626     REINITOBJ2(wxNullImage, wxImage);
 627     REINITOBJ2(wxNullAcceleratorTable, wxAcceleratorTable);
 628
 629 #undef REINITOBJ
 630 #undef REINITOBJ2
 631 }
 632
 633 //---------------------------------------------------------------------------
 634
 635 void wxPyClientData_dtor(wxPyClientData* self) {
 636     if (! wxPyDoingCleanup) {           // Don't do it during cleanup as Python
 637                                         // may have already garbage collected the object...
 638         wxPyBeginBlockThreads();
 639         Py_DECREF(self->m_obj);
 640         wxPyEndBlockThreads();
 641     }
 642 }
 643
 644 void wxPyUserData_dtor(wxPyUserData* self) {
 645     if (! wxPyDoingCleanup) {
 646         wxPyBeginBlockThreads();
 647         Py_DECREF(self->m_obj);
 648         wxPyEndBlockThreads();
 649     }
 650 }
 651
 652
 653 // This is called when an OOR controled object is being destroyed.  Although
 654 // the C++ object is going away there is no way to force the Python object
 655 // (and all references to it) to die too.  This causes problems (crashes) in
 656 // wxPython when a python shadow object attempts to call a C++ method using
 657 // the now bogus pointer... So to try and prevent this we'll do a little black
 658 // magic and change the class of the python instance to a class that will
 659 // raise an exception for any attempt to call methods with it.  See
 660 // _wxPyDeadObject in _extras.py for the implementation of this class.
 661 void wxPyOORClientData_dtor(wxPyOORClientData* self) {
 662
 663     static PyObject* deadObjectClass = NULL;
 664
 665     wxPyBeginBlockThreads();
 666     if (deadObjectClass == NULL) {
 667         deadObjectClass = PyDict_GetItemString(wxPython_dict, "_wxPyDeadObject");
 668         wxASSERT_MSG(deadObjectClass != NULL, wxT("Can't get _wxPyDeadObject class!"));
 669         Py_INCREF(deadObjectClass);
 670     }
 671
 672
 673     // Only if there is more than one reference to the object
 674     if ( !wxPyDoingCleanup && self->m_obj->ob_refcnt > 1 ) {
 675         wxASSERT_MSG(PyInstance_Check(self->m_obj), wxT("m_obj not an instance!?!?!"));
 676
 677         // Call __del__, if there is one.
 678         PyObject* func = PyObject_GetAttrString(self->m_obj, "__del__");
 679         if (func) {
 680             PyObject* rv = PyObject_CallMethod(self->m_obj, "__del__", NULL);
 681             Py_XDECREF(rv);
 682             Py_DECREF(func);
 683         }
 684         if (PyErr_Occurred())
 685             PyErr_Clear();      // just ignore it for now
 686
 687         // Clear the instance's dictionary
 688         PyInstanceObject* inst = (PyInstanceObject*)self->m_obj;
 689         PyDict_Clear(inst->in_dict);
 690
 691         // put the name of the old class into the instance, and then reset the
 692         // class to be the dead class.
 693         PyDict_SetItemString(inst->in_dict, "_name", inst->in_class->cl_name);
 694         inst->in_class = (PyClassObject*)deadObjectClass;
 695         Py_INCREF(deadObjectClass);
 696     }
 697
 698     // m_obj is DECREF's in the base class dtor...
 699     wxPyEndBlockThreads();
 700 }
 701
 702
 703 //---------------------------------------------------------------------------
 704 // Stuff used by OOR to find the right wxPython class type to return and to
 705 // build it.
 706
 707
 708 // The pointer type map is used when the "pointer" type name generated by SWIG
 709 // is not the same as the shadow class name, for example wxPyTreeCtrl
 710 // vs. wxTreeCtrl.  It needs to be referenced in Python as well as from C++,
 711 // so we'll just make it a Python dictionary in the wx module's namespace.
 712 // (See __wxSetDictionary)
 713 void wxPyPtrTypeMap_Add(const char* commonName, const char* ptrName) {
 714     if (! wxPyPtrTypeMap)
 715         wxPyPtrTypeMap = PyDict_New();
 716     PyDict_SetItemString(wxPyPtrTypeMap,
 717                          (char*)commonName,
 718                          PyString_FromString((char*)ptrName));
 719 }
 720
 721
 722
 723 PyObject* wxPyClassExists(const wxString& className) {
 724
 725     PyObject* item;
 726     wxString  name(className);
 727     char      buff[64];               // should always be big enough...
 728
 729     if (!className)
 730         return NULL;
 731
 732     // Try the name as-is first
 733     sprintf(buff, "%sPtr", (const char*)name.mbc_str());
 734     PyObject* classobj = PyDict_GetItemString(wxPython_dict, buff);
 735
 736     // if not found see if there is a mapped name for it
 737     if ( ! classobj) {
 738         if ((item = PyDict_GetItemString(wxPyPtrTypeMap, (char*)(const char*)name.mbc_str())) != NULL) {
 739             name = wxString(PyString_AsString(item), *wxConvCurrent);
 740             sprintf(buff, "%sPtr", (const char*)name.mbc_str());
 741             classobj = PyDict_GetItemString(wxPython_dict, buff);
 742         }
 743     }
 744
 745     return classobj;  // returns NULL if not found
 746 }
 747
 748
 749 PyObject*  wxPyMake_wxObject(wxObject* source, bool checkEvtHandler) {
 750     PyObject* target = NULL;
 751     bool      isEvtHandler = FALSE;
 752
 753     if (source) {
 754         // If it's derived from wxEvtHandler then there may
 755         // already be a pointer to a Python object that we can use
 756         // in the OOR data.
 757         if (checkEvtHandler && wxIsKindOf(source, wxEvtHandler)) {
 758             isEvtHandler = TRUE;
 759             wxEvtHandler* eh = (wxEvtHandler*)source;
 760             wxPyOORClientData* data = (wxPyOORClientData*)eh->GetClientObject();
 761             if (data) {
 762                 target = data->m_obj;
 763                 Py_INCREF(target);
 764             }
 765         }
 766
 767         if (! target) {
 768             // Otherwise make it the old fashioned way by making a
 769             // new shadow object and putting this pointer in it.
 770             wxClassInfo* info  = source->GetClassInfo();
 771             wxString     name  = info->GetClassName();
 772             PyObject*    klass = wxPyClassExists(name);
 773             while (info && !klass) {
 774                 name = (wxChar*)info->GetBaseClassName1();
 775                 info = wxClassInfo::FindClass(name);
 776                 klass = wxPyClassExists(name);
 777             }
 778             if (info) {
 779                 target = wxPyConstructObject(source, name, klass, FALSE);
 780                 if (target && isEvtHandler)
 781                     ((wxEvtHandler*)source)->SetClientObject(new wxPyOORClientData(target));
 782             } else {
 783                 wxString msg(wxT("wxPython class not found for "));
 784                 msg += source->GetClassInfo()->GetClassName();
 785                 PyErr_SetString(PyExc_NameError, msg.mbc_str());
 786                 target = NULL;
 787             }
 788         }
 789     } else {  // source was NULL so return None.
 790         Py_INCREF(Py_None); target = Py_None;
 791     }
 792     return target;
 793 }
 794
 795
 796 PyObject*  wxPyMake_wxSizer(wxSizer* source) {
 797     PyObject* target = NULL;
 798
 799     if (source && wxIsKindOf(source, wxSizer)) {
 800         // If it's derived from wxSizer then there may
 801         // already be a pointer to a Python object that we can use
 802         // in the OOR data.
 803         wxSizer* sz = (wxSizer*)source;
 804         wxPyOORClientData* data = (wxPyOORClientData*)sz->GetClientObject();
 805         if (data) {
 806             target = data->m_obj;
 807             Py_INCREF(target);
 808         }
 809     }
 810     if (! target) {
 811         target = wxPyMake_wxObject(source, FALSE);
 812         if (target != Py_None)
 813             ((wxSizer*)source)->SetClientObject(new wxPyOORClientData(target));
 814     }
 815     return target;
 816 }
 817
 818
 819
 820 //---------------------------------------------------------------------------
 821
 822 PyObject* wxPyConstructObject(void* ptr,
 823                               const wxString& className,
 824                               PyObject* klass,
 825                               int setThisOwn) {
 826
 827     PyObject* obj;
 828     PyObject* arg;
 829     PyObject* item;
 830     wxString  name(className);
 831     char      swigptr[64];      // should always be big enough...
 832     char      buff[64];
 833
 834     if ((item = PyDict_GetItemString(wxPyPtrTypeMap, (char*)(const char*)name.mbc_str())) != NULL) {
 835         name = wxString(PyString_AsString(item), *wxConvCurrent);
 836     }
 837     sprintf(buff, "_%s_p", (const char*)name.mbc_str());
 838     SWIG_MakePtr(swigptr, ptr, buff);
 839
 840     arg = Py_BuildValue("(s)", swigptr);
 841     obj = PyInstance_New(klass, arg, NULL);
 842     Py_DECREF(arg);
 843
 844     if (setThisOwn) {
 845         PyObject* one = PyInt_FromLong(1);
 846         PyObject_SetAttrString(obj, "thisown", one);
 847         Py_DECREF(one);
 848     }
 849
 850     return obj;
 851 }
 852
 853
 854 PyObject* wxPyConstructObject(void* ptr,
 855                               const wxString& className,
 856                               int setThisOwn) {
 857     if (!ptr) {
 858         Py_INCREF(Py_None);
 859         return Py_None;
 860     }
 861
 862     char    buff[64];               // should always be big enough...
 863     sprintf(buff, "%sPtr", (const char*)className.mbc_str());
 864
 865     wxASSERT_MSG(wxPython_dict, wxT("wxPython_dict is not set yet!!"));
 866
 867     PyObject* classobj = PyDict_GetItemString(wxPython_dict, buff);
 868     if (! classobj) {
 869         wxString msg(wxT("wxPython class not found for "));
 870         msg += className;
 871         PyErr_SetString(PyExc_NameError, msg.mbc_str());
 872         return NULL;
 873     }
 874
 875     return wxPyConstructObject(ptr, className, classobj, setThisOwn);
 876 }
 877
 878
 879 //---------------------------------------------------------------------------
 880
 881
 882 #ifdef WXP_WITH_THREAD
 883 inline
 884 unsigned long wxPyGetCurrentThreadId() {
 885     return wxThread::GetCurrentId();
 886 }
 887
 888 static PyThreadState* gs_shutdownTState;
 889 static
 890 PyThreadState* wxPyGetThreadState() {
 891     if (wxPyTMutex == NULL) // Python is shutting down...
 892         return gs_shutdownTState;
 893
 894     unsigned long ctid = wxPyGetCurrentThreadId();
 895     PyThreadState* tstate = NULL;
 896
 897     wxPyTMutex->Lock();
 898     for(size_t i=0; i < wxPyTStates->GetCount(); i++) {
 899         wxPyThreadState& info = wxPyTStates->Item(i);
 900         if (info.tid == ctid) {
 901             tstate = info.tstate;
 902             break;
 903         }
 904     }
 905     wxPyTMutex->Unlock();
 906     wxASSERT_MSG(tstate, wxT("PyThreadState should not be NULL!"));
 907     return tstate;
 908 }
 909
 910 static
 911 void wxPySaveThreadState(PyThreadState* tstate) {
 912     if (wxPyTMutex == NULL) { // Python is shutting down, assume a single thread...
 913         gs_shutdownTState = tstate;
 914         return;
 915     }
 916     unsigned long ctid = wxPyGetCurrentThreadId();
 917     wxPyTMutex->Lock();
 918     for(size_t i=0; i < wxPyTStates->GetCount(); i++) {
 919         wxPyThreadState& info = wxPyTStates->Item(i);
 920         if (info.tid == ctid) {
 921 #if 0
 922             if (info.tstate != tstate)
 923                 wxLogMessage("*** tstate mismatch!???");
 924 #endif
 925             // info.tstate = tstate;    *** DO NOT update existing ones???
 926             // Normally it will never change, but apparently COM callbacks
 927             // (i.e. ActiveX controls) will (incorrectly IMHO) use a transient
 928             // tstate which will then be garbage the next time we try to use
 929             // it...
 930             wxPyTMutex->Unlock();
 931             return;
 932         }
 933     }
 934     // not found, so add it...
 935     wxPyTStates->Add(new wxPyThreadState(ctid, tstate));
 936     wxPyTMutex->Unlock();
 937 }
 938
 939 #endif
 940
 941
 942 // Calls from Python to wxWindows code are wrapped in calls to these
 943 // functions:
 944
 945 PyThreadState* wxPyBeginAllowThreads() {
 946 #ifdef WXP_WITH_THREAD
 947     PyThreadState* saved = PyEval_SaveThread();  // Py_BEGIN_ALLOW_THREADS;
 948     wxPySaveThreadState(saved);
 949     return saved;
 950 #else
 951     return NULL;
 952 #endif
 953 }
 954
 955 void wxPyEndAllowThreads(PyThreadState* saved) {
 956 #ifdef WXP_WITH_THREAD
 957     PyEval_RestoreThread(saved);   // Py_END_ALLOW_THREADS;
 958 #endif
 959 }
 960
 961
 962
 963 // Calls from wxWindows back to Python code, or even any PyObject
 964 // manipulations, PyDECREF's and etc. are wrapped in calls to these functions:
 965
 966 void wxPyBeginBlockThreads() {
 967 #ifdef WXP_WITH_THREAD
 968     PyThreadState* tstate = wxPyGetThreadState();
 969     PyEval_RestoreThread(tstate);
 970 #endif
 971 }
 972
 973
 974 void wxPyEndBlockThreads() {
 975 #ifdef WXP_WITH_THREAD
 976     // Is there any need to save it again?
 977     // PyThreadState* tstate =
 978     PyEval_SaveThread();
 979 #endif
 980 }
 981
 982
 983 //---------------------------------------------------------------------------
 984 // wxPyInputStream and wxPyCBInputStream methods
 985
 986
 987 void wxPyInputStream::close() {
 988     /* do nothing for now */
 989 }
 990
 991 void wxPyInputStream::flush() {
 992     /* do nothing for now */
 993 }
 994
 995 bool wxPyInputStream::eof() {
 996     if (m_wxis)
 997         return m_wxis->Eof();
 998     else
 999         return TRUE;
1000 }
1001
1002 wxPyInputStream::~wxPyInputStream() {
1003     /* do nothing */
1004 }
1005
1006
1007
1008
1009 PyObject* wxPyInputStream::read(int size) {
1010     PyObject* obj = NULL;
1011     wxMemoryBuffer buf;
1012     const int BUFSIZE = 1024;
1013
1014     // check if we have a real wxInputStream to work with
1015     if (!m_wxis) {
1016         wxPyBeginBlockThreads();
1017         PyErr_SetString(PyExc_IOError, "no valid C-wxInputStream");
1018         wxPyEndBlockThreads();
1019         return NULL;
1020     }
1021
1022     if (size < 0) {
1023         // read while bytes are available on the stream
1024         while ( m_wxis->CanRead() ) {
1025             m_wxis->Read(buf.GetAppendBuf(BUFSIZE), BUFSIZE);
1026             buf.UngetAppendBuf(m_wxis->LastRead());
1027         }
1028
1029     } else {  // Read only size number of characters
1030         m_wxis->Read(buf.GetWriteBuf(size), size);
1031         buf.UngetWriteBuf(m_wxis->LastRead());
1032     }
1033
1034     // error check
1035     wxPyBeginBlockThreads();
1036     wxStreamError err = m_wxis->GetLastError();
1037     if (err != wxSTREAM_NO_ERROR && err != wxSTREAM_EOF) {
1038         PyErr_SetString(PyExc_IOError,"IOError in wxInputStream");
1039     }
1040     else {
1041         // We use only strings for the streams, not unicode
1042         obj = PyString_FromStringAndSize(buf, buf.GetDataLen());
1043     }
1044     wxPyEndBlockThreads();
1045     return obj;
1046 }
1047
1048
1049 PyObject* wxPyInputStream::readline(int size) {
1050     PyObject* obj = NULL;
1051     wxMemoryBuffer buf;
1052     int i;
1053     char ch;
1054
1055     // check if we have a real wxInputStream to work with
1056     if (!m_wxis) {
1057         wxPyBeginBlockThreads();
1058         PyErr_SetString(PyExc_IOError,"no valid C-wxInputStream");
1059         wxPyEndBlockThreads();
1060         return NULL;
1061     }
1062
1063     // read until \n or byte limit reached
1064     for (i=ch=0; (ch != '\n') && (m_wxis->CanRead()) && ((size < 0) || (i < size)); i++) {
1065         ch = m_wxis->GetC();
1066         buf.AppendByte(ch);
1067     }
1068
1069     // errorcheck
1070     wxPyBeginBlockThreads();
1071     wxStreamError err = m_wxis->GetLastError();
1072     if (err != wxSTREAM_NO_ERROR && err != wxSTREAM_EOF) {
1073         PyErr_SetString(PyExc_IOError,"IOError in wxInputStream");
1074     }
1075     else {
1076         // We use only strings for the streams, not unicode
1077         obj = PyString_FromStringAndSize((char*)buf.GetData(), buf.GetDataLen());
1078     }
1079     wxPyEndBlockThreads();
1080     return obj;
1081 }
1082
1083
1084 PyObject* wxPyInputStream::readlines(int sizehint) {
1085     PyObject* pylist;
1086
1087     // check if we have a real wxInputStream to work with
1088     if (!m_wxis) {
1089         wxPyBeginBlockThreads();
1090         PyErr_SetString(PyExc_IOError,"no valid C-wxInputStream");
1091         wxPyEndBlockThreads();
1092         return NULL;
1093     }
1094
1095     // init list
1096     wxPyBeginBlockThreads();
1097     pylist = PyList_New(0);
1098     if (!pylist) {
1099         wxPyBeginBlockThreads();
1100         PyErr_NoMemory();
1101         wxPyEndBlockThreads();
1102         return NULL;
1103     }
1104
1105     // read sizehint bytes or until EOF
1106     int i;
1107     for (i=0; (m_wxis->CanRead()) && ((sizehint < 0) || (i < sizehint));) {
1108         PyObject* s = this->readline();
1109         if (s == NULL) {
1110             wxPyBeginBlockThreads();
1111             Py_DECREF(pylist);
1112             wxPyEndBlockThreads();
1113             return NULL;
1114         }
1115         wxPyBeginBlockThreads();
1116         PyList_Append(pylist, s);
1117         i += PyString_Size(s);
1118         wxPyEndBlockThreads();
1119     }
1120
1121     // error check
1122     wxStreamError err = m_wxis->GetLastError();
1123     if (err != wxSTREAM_NO_ERROR && err != wxSTREAM_EOF) {
1124         wxPyBeginBlockThreads();
1125         Py_DECREF(pylist);
1126         PyErr_SetString(PyExc_IOError,"IOError in wxInputStream");
1127         wxPyEndBlockThreads();
1128         return NULL;
1129     }
1130
1131     return pylist;
1132 }
1133
1134
1135 void wxPyInputStream::seek(int offset, int whence) {
1136     if (m_wxis)
1137         m_wxis->SeekI(offset, wxSeekMode(whence));
1138 }
1139
1140 int wxPyInputStream::tell(){
1141     if (m_wxis)
1142         return m_wxis->TellI();
1143     else return 0;
1144 }
1145
1146
1147
1148
1149 wxPyCBInputStream::wxPyCBInputStream(PyObject *r, PyObject *s, PyObject *t, bool block)
1150     : wxInputStream(), m_read(r), m_seek(s), m_tell(t), m_block(block)
1151 {}
1152
1153
1154 wxPyCBInputStream::~wxPyCBInputStream() {
1155     if (m_block) wxPyBeginBlockThreads();
1156     Py_XDECREF(m_read);
1157     Py_XDECREF(m_seek);
1158     Py_XDECREF(m_tell);
1159     if (m_block) wxPyEndBlockThreads();
1160 }
1161
1162
1163 wxPyCBInputStream* wxPyCBInputStream::create(PyObject *py, bool block) {
1164     if (block) wxPyBeginBlockThreads();
1165
1166     PyObject* read = getMethod(py, "read");
1167     PyObject* seek = getMethod(py, "seek");
1168     PyObject* tell = getMethod(py, "tell");
1169
1170     if (!read) {
1171         PyErr_SetString(PyExc_TypeError, "Not a file-like object");
1172         Py_XDECREF(read);
1173         Py_XDECREF(seek);
1174         Py_XDECREF(tell);
1175         if (block) wxPyEndBlockThreads();
1176         return NULL;
1177     }
1178
1179     if (block) wxPyEndBlockThreads();
1180     return new wxPyCBInputStream(read, seek, tell, block);
1181 }
1182
1183
1184 wxPyCBInputStream* wxPyCBInputStream_create(PyObject *py, bool block) {
1185     return wxPyCBInputStream::create(py, block);
1186 }
1187
1188 PyObject* wxPyCBInputStream::getMethod(PyObject* py, char* name) {
1189     if (!PyObject_HasAttrString(py, name))
1190         return NULL;
1191     PyObject* o = PyObject_GetAttrString(py, name);
1192     if (!PyMethod_Check(o) && !PyCFunction_Check(o)) {
1193         Py_DECREF(o);
1194         return NULL;
1195     }
1196     return o;
1197 }
1198
1199
1200 size_t wxPyCBInputStream::GetSize() const {
1201     wxPyCBInputStream* self = (wxPyCBInputStream*)this; // cast off const
1202     if (m_seek && m_tell) {
1203         off_t temp = self->OnSysTell();
1204         off_t ret = self->OnSysSeek(0, wxFromEnd);
1205         self->OnSysSeek(temp, wxFromStart);
1206         return ret;
1207     }
1208     else
1209         return 0;
1210 }
1211
1212
1213 size_t wxPyCBInputStream::OnSysRead(void *buffer, size_t bufsize) {
1214     if (bufsize == 0)
1215         return 0;
1216
1217     wxPyBeginBlockThreads();
1218     PyObject* arglist = Py_BuildValue("(i)", bufsize);
1219     PyObject* result = PyEval_CallObject(m_read, arglist);
1220     Py_DECREF(arglist);
1221
1222     size_t o = 0;
1223     if ((result != NULL) && PyString_Check(result)) {
1224         o = PyString_Size(result);
1225         if (o == 0)
1226             m_lasterror = wxSTREAM_EOF;
1227         if (o > bufsize)
1228             o = bufsize;
1229         memcpy((char*)buffer, PyString_AsString(result), o);  // strings only, not unicode...
1230         Py_DECREF(result);
1231
1232     }
1233     else
1234         m_lasterror = wxSTREAM_READ_ERROR;
1235     wxPyEndBlockThreads();
1236     return o;
1237 }
1238
1239 size_t wxPyCBInputStream::OnSysWrite(const void *buffer, size_t bufsize) {
1240     m_lasterror = wxSTREAM_WRITE_ERROR;
1241     return 0;
1242 }
1243
1244 off_t wxPyCBInputStream::OnSysSeek(off_t off, wxSeekMode mode) {
1245     wxPyBeginBlockThreads();
1246 #ifdef _LARGE_FILES
1247     // off_t is a 64-bit value...
1248     PyObject* arglist = Py_BuildValue("(Li)", off, mode);
1249 #else
1250     PyObject* arglist = Py_BuildValue("(ii)", off, mode);
1251 #endif
1252     PyObject* result = PyEval_CallObject(m_seek, arglist);
1253     Py_DECREF(arglist);
1254     Py_XDECREF(result);
1255     wxPyEndBlockThreads();
1256     return OnSysTell();
1257 }
1258
1259
1260 off_t wxPyCBInputStream::OnSysTell() const {
1261     wxPyBeginBlockThreads();
1262     PyObject* arglist = Py_BuildValue("()");
1263     PyObject* result = PyEval_CallObject(m_tell, arglist);
1264     Py_DECREF(arglist);
1265     off_t o = 0;
1266     if (result != NULL) {
1267 #ifdef _LARGE_FILES
1268         if (PyLong_Check(result))
1269             o = PyLong_AsLongLong(result);
1270         else
1271 #else
1272         o = PyInt_AsLong(result);
1273 #endif
1274         Py_DECREF(result);
1275     };
1276     wxPyEndBlockThreads();
1277     return o;
1278 }
1279
1280 //----------------------------------------------------------------------
1281
1282 IMPLEMENT_ABSTRACT_CLASS(wxPyCallback, wxObject);
1283
1284 wxPyCallback::wxPyCallback(PyObject* func) {
1285     m_func = func;
1286     Py_INCREF(m_func);
1287 }
1288
1289 wxPyCallback::wxPyCallback(const wxPyCallback& other) {
1290     m_func = other.m_func;
1291     Py_INCREF(m_func);
1292 }
1293
1294 wxPyCallback::~wxPyCallback() {
1295     wxPyBeginBlockThreads();
1296     Py_DECREF(m_func);
1297     wxPyEndBlockThreads();
1298 }
1299
1300
1301
1302 // This function is used for all events destined for Python event handlers.
1303 void wxPyCallback::EventThunker(wxEvent& event) {
1304     wxPyCallback*   cb = (wxPyCallback*)event.m_callbackUserData;
1305     PyObject*       func = cb->m_func;
1306     PyObject*       result;
1307     PyObject*       arg;
1308     PyObject*       tuple;
1309     bool            checkSkip = FALSE;
1310
1311     wxPyBeginBlockThreads();
1312     wxString className = event.GetClassInfo()->GetClassName();
1313
1314     // If the event is one of these types then pass the original
1315     // event object instead of the one passed to us.
1316     if ( className == wxT("wxPyEvent") ) {
1317         arg =       ((wxPyEvent*)&event)->GetSelf();
1318         checkSkip = ((wxPyEvent*)&event)->GetCloned();
1319     }
1320     else if ( className == wxT("wxPyCommandEvent") ) {
1321         arg =       ((wxPyCommandEvent*)&event)->GetSelf();
1322         checkSkip = ((wxPyCommandEvent*)&event)->GetCloned();
1323     }
1324     else {
1325         arg = wxPyConstructObject((void*)&event, className);
1326     }
1327
1328     // Call the event handler, passing the event object
1329     tuple = PyTuple_New(1);
1330     PyTuple_SET_ITEM(tuple, 0, arg);  // steals ref to arg
1331     result = PyEval_CallObject(func, tuple);
1332     if ( result ) {
1333         Py_DECREF(result);   // result is ignored, but we still need to decref it
1334         PyErr_Clear();       // Just in case...
1335     } else {
1336         PyErr_Print();
1337     }
1338
1339     if ( checkSkip ) {
1340         // if the event object was one of our special types and
1341         // it had been cloned, then we need to extract the Skipped
1342         // value from the original and set it in the clone.
1343         result = PyObject_CallMethod(arg, "GetSkipped", "");
1344         if ( result ) {
1345             event.Skip(PyInt_AsLong(result));
1346             Py_DECREF(result);
1347         } else {
1348             PyErr_Print();
1349         }
1350     }
1351
1352     Py_DECREF(tuple);
1353     wxPyEndBlockThreads();
1354 }
1355
1356
1357 //----------------------------------------------------------------------
1358
1359 wxPyCallbackHelper::wxPyCallbackHelper(const wxPyCallbackHelper& other) {
1360       m_lastFound = NULL;
1361       m_self = other.m_self;
1362       m_class = other.m_class;
1363       if (m_self) {
1364           Py_INCREF(m_self);
1365           Py_INCREF(m_class);
1366       }
1367 }
1368
1369
1370 void wxPyCallbackHelper::setSelf(PyObject* self, PyObject* klass, int incref) {
1371     m_self = self;
1372     m_class = klass;
1373     m_incRef = incref;
1374     if (incref) {
1375         Py_INCREF(m_self);
1376         Py_INCREF(m_class);
1377     }
1378 }
1379
1380
1381 #if PYTHON_API_VERSION >= 1011
1382
1383 // Prior to Python 2.2 PyMethod_GetClass returned the class object
1384 // in which the method was defined.  Starting with 2.2 it returns
1385 // "class that asked for the method" which seems totally bogus to me
1386 // but apprently it fixes some obscure problem waiting to happen in
1387 // Python.  Since the API was not documented Guido and the gang felt
1388 // safe in changing it.  Needless to say that totally screwed up the
1389 // logic below in wxPyCallbackHelper::findCallback, hence this icky
1390 // code to find the class where the method is actually defined...
1391
1392 static
1393 PyObject* PyFindClassWithAttr(PyObject *klass, PyObject *name)
1394 {
1395     int i, n;
1396
1397     if (PyType_Check(klass)) {      // new style classes
1398         // This code is borrowed/adapted from _PyType_Lookup in typeobject.c
1399         // (TODO: This part is not tested yet, so I'm not sure it is correct...)
1400         PyTypeObject* type = (PyTypeObject*)klass;
1401         PyObject *mro, *res, *base, *dict;
1402         /* Look in tp_dict of types in MRO */
1403         mro = type->tp_mro;
1404         assert(PyTuple_Check(mro));
1405         n = PyTuple_GET_SIZE(mro);
1406         for (i = 0; i < n; i++) {
1407             base = PyTuple_GET_ITEM(mro, i);
1408             if (PyClass_Check(base))
1409                 dict = ((PyClassObject *)base)->cl_dict;
1410             else {
1411                 assert(PyType_Check(base));
1412                 dict = ((PyTypeObject *)base)->tp_dict;
1413             }
1414             assert(dict && PyDict_Check(dict));
1415             res = PyDict_GetItem(dict, name);
1416             if (res != NULL)
1417                 return base;
1418         }
1419         return NULL;
1420     }
1421
1422     else if (PyClass_Check(klass)) { // old style classes
1423         // This code is borrowed/adapted from class_lookup in classobject.c
1424         PyClassObject* cp = (PyClassObject*)klass;
1425         PyObject *value = PyDict_GetItem(cp->cl_dict, name);
1426         if (value != NULL) {
1427             return (PyObject*)cp;
1428         }
1429         n = PyTuple_Size(cp->cl_bases);
1430         for (i = 0; i < n; i++) {
1431             PyObject* base = PyTuple_GetItem(cp->cl_bases, i);
1432             PyObject *v = PyFindClassWithAttr(base, name);
1433             if (v != NULL)
1434                 return v;
1435         }
1436         return NULL;
1437     }
1438     return NULL;
1439 }
1440 #endif
1441
1442
1443 static
1444 PyObject* PyMethod_GetDefiningClass(PyObject* method, const char* name)
1445 {
1446     PyObject* mgc = PyMethod_GET_CLASS(method);
1447
1448 #if PYTHON_API_VERSION <= 1010    // prior to Python 2.2, the easy way
1449     return mgc;
1450 #else                             // 2.2 and after, the hard way...
1451
1452     PyObject* nameo = PyString_FromString(name);
1453     PyObject* klass = PyFindClassWithAttr(mgc, nameo);
1454     Py_DECREF(nameo);
1455     return klass;
1456 #endif
1457 }
1458
1459
1460
1461 bool wxPyCallbackHelper::findCallback(const char* name) const {
1462     wxPyCallbackHelper* self = (wxPyCallbackHelper*)this; // cast away const
1463     self->m_lastFound = NULL;
1464
1465     // If the object (m_self) has an attibute of the given name...
1466     if (m_self && PyObject_HasAttrString(m_self, (char*)name)) {
1467         PyObject *method, *klass;
1468         method = PyObject_GetAttrString(m_self, (char*)name);
1469
1470         // ...and if that attribute is a method, and if that method's class is
1471         // not from a base class...
1472         if (PyMethod_Check(method) &&
1473             (klass = PyMethod_GetDefiningClass(method, (char*)name)) != NULL &&
1474             ((klass == m_class) || PyClass_IsSubclass(klass, m_class))) {
1475
1476             // ...then we'll save a pointer to the method so callCallback can call it.
1477             self->m_lastFound = method;
1478         }
1479         else {
1480             Py_DECREF(method);
1481         }
1482     }
1483     return m_lastFound != NULL;
1484 }
1485
1486
1487 int wxPyCallbackHelper::callCallback(PyObject* argTuple) const {
1488     PyObject*   result;
1489     int         retval = FALSE;
1490
1491     result = callCallbackObj(argTuple);
1492     if (result) {                       // Assumes an integer return type...
1493         retval = PyInt_AsLong(result);
1494         Py_DECREF(result);
1495         PyErr_Clear();                  // forget about it if it's not...
1496     }
1497     return retval;
1498 }
1499
1500 // Invoke the Python callable object, returning the raw PyObject return
1501 // value.  Caller should DECREF the return value and also call PyEval_SaveThread.
1502 PyObject* wxPyCallbackHelper::callCallbackObj(PyObject* argTuple) const {
1503     PyObject* result;
1504
1505     // Save a copy of the pointer in case the callback generates another
1506     // callback.  In that case m_lastFound will have a different value when
1507     // it gets back here...
1508     PyObject* method = m_lastFound;
1509
1510     result = PyEval_CallObject(method, argTuple);
1511     Py_DECREF(argTuple);
1512     Py_DECREF(method);
1513     if (!result) {
1514         PyErr_Print();
1515     }
1516     return result;
1517 }
1518
1519
1520 void wxPyCBH_setCallbackInfo(wxPyCallbackHelper& cbh, PyObject* self, PyObject* klass, int incref) {
1521     cbh.setSelf(self, klass, incref);
1522 }
1523
1524 bool wxPyCBH_findCallback(const wxPyCallbackHelper& cbh, const char* name) {
1525     return cbh.findCallback(name);
1526 }
1527
1528 int  wxPyCBH_callCallback(const wxPyCallbackHelper& cbh, PyObject* argTuple) {
1529     return cbh.callCallback(argTuple);
1530 }
1531
1532 PyObject* wxPyCBH_callCallbackObj(const wxPyCallbackHelper& cbh, PyObject* argTuple) {
1533     return cbh.callCallbackObj(argTuple);
1534 }
1535
1536
1537 void wxPyCBH_delete(wxPyCallbackHelper* cbh) {
1538     if (cbh->m_incRef) {
1539         wxPyBeginBlockThreads();
1540         Py_XDECREF(cbh->m_self);
1541         Py_XDECREF(cbh->m_class);
1542         wxPyEndBlockThreads();
1543     }
1544 }
1545
1546 //---------------------------------------------------------------------------
1547 //---------------------------------------------------------------------------
1548 // These event classes can be derived from in Python and passed through the event
1549 // system without losing anything.  They do this by keeping a reference to
1550 // themselves and some special case handling in wxPyCallback::EventThunker.
1551
1552
1553 wxPyEvtSelfRef::wxPyEvtSelfRef() {
1554     //m_self = Py_None;         // **** We don't do normal ref counting to prevent
1555     //Py_INCREF(m_self);        //      circular loops...
1556     m_cloned = FALSE;
1557 }
1558
1559 wxPyEvtSelfRef::~wxPyEvtSelfRef() {
1560     wxPyBeginBlockThreads();
1561     if (m_cloned)
1562         Py_DECREF(m_self);
1563     wxPyEndBlockThreads();
1564 }
1565
1566 void wxPyEvtSelfRef::SetSelf(PyObject* self, bool clone) {
1567     wxPyBeginBlockThreads();
1568     if (m_cloned)
1569         Py_DECREF(m_self);
1570     m_self = self;
1571     if (clone) {
1572         Py_INCREF(m_self);
1573         m_cloned = TRUE;
1574     }
1575     wxPyEndBlockThreads();
1576 }
1577
1578 PyObject* wxPyEvtSelfRef::GetSelf() const {
1579     Py_INCREF(m_self);
1580     return m_self;
1581 }
1582
1583
1584 IMPLEMENT_ABSTRACT_CLASS(wxPyEvent, wxEvent);
1585 IMPLEMENT_ABSTRACT_CLASS(wxPyCommandEvent, wxCommandEvent);
1586
1587
1588 wxPyEvent::wxPyEvent(int winid, wxEventType commandType)
1589     : wxEvent(winid, commandType) {
1590 }
1591
1592
1593 wxPyEvent::wxPyEvent(const wxPyEvent& evt)
1594     : wxEvent(evt)
1595 {
1596     SetSelf(evt.m_self, TRUE);
1597 }
1598
1599
1600 wxPyEvent::~wxPyEvent() {
1601 }
1602
1603
1604 wxPyCommandEvent::wxPyCommandEvent(wxEventType commandType, int id)
1605     : wxCommandEvent(commandType, id) {
1606 }
1607
1608
1609 wxPyCommandEvent::wxPyCommandEvent(const wxPyCommandEvent& evt)
1610     : wxCommandEvent(evt)
1611 {
1612     SetSelf(evt.m_self, TRUE);
1613 }
1614
1615
1616 wxPyCommandEvent::~wxPyCommandEvent() {
1617 }
1618
1619
1620
1621
1622 //---------------------------------------------------------------------------
1623 //---------------------------------------------------------------------------
1624
1625
1626 wxPyTimer::wxPyTimer(PyObject* callback) {
1627     func = callback;
1628     Py_INCREF(func);
1629 }
1630
1631 wxPyTimer::~wxPyTimer() {
1632     wxPyBeginBlockThreads();
1633     Py_DECREF(func);
1634     wxPyEndBlockThreads();
1635 }
1636
1637 void wxPyTimer::Notify() {
1638     if (!func || func == Py_None) {
1639         wxTimer::Notify();
1640     }
1641     else {
1642         wxPyBeginBlockThreads();
1643
1644         PyObject*   result;
1645         PyObject*   args = Py_BuildValue("()");
1646
1647         result = PyEval_CallObject(func, args);
1648         Py_DECREF(args);
1649         if (result) {
1650             Py_DECREF(result);
1651             PyErr_Clear();
1652         } else {
1653             PyErr_Print();
1654         }
1655
1656         wxPyEndBlockThreads();
1657     }
1658 }
1659
1660
1661
1662 //---------------------------------------------------------------------------
1663 //---------------------------------------------------------------------------
1664 // Convert a wxList to a Python List
1665
1666 PyObject* wxPy_ConvertList(wxListBase* listbase, const char* className) {
1667     wxList*     list = (wxList*)listbase;  // this is probably bad...
1668     PyObject*   pyList;
1669     PyObject*   pyObj;
1670     wxObject*   wxObj;
1671     wxNode*     node = list->GetFirst();
1672
1673     wxPyBeginBlockThreads();
1674     pyList = PyList_New(0);
1675     while (node) {
1676         wxObj = node->GetData();
1677         pyObj = wxPyMake_wxObject(wxObj); //wxPyConstructObject(wxObj, className);
1678         PyList_Append(pyList, pyObj);
1679         node = node->GetNext();
1680     }
1681     wxPyEndBlockThreads();
1682     return pyList;
1683 }
1684
1685 //----------------------------------------------------------------------
1686
1687 long wxPyGetWinHandle(wxWindow* win) {
1688 #ifdef __WXMSW__
1689     return (long)win->GetHandle();
1690 #endif
1691
1692     // Find and return the actual X-Window.
1693 #ifdef __WXGTK__
1694     if (win->m_wxwindow) {
1695 #ifdef __WXGTK20__
1696         return (long) GDK_WINDOW_XWINDOW(GTK_PIZZA(win->m_wxwindow)->bin_window);
1697 #else
1698         GdkWindowPrivate* bwin = (GdkWindowPrivate*)GTK_PIZZA(win->m_wxwindow)->bin_window;
1699         if (bwin) {
1700             return (long)bwin->xwindow;
1701         }
1702 #endif
1703     }
1704 #endif
1705     return 0;
1706 }
1707
1708 //----------------------------------------------------------------------
1709 // Some helper functions for typemaps in my_typemaps.i, so they won't be
1710 // included in every file over and over again...
1711
1712 #if PYTHON_API_VERSION >= 1009
1713     static char* wxStringErrorMsg = "String or Unicode type required";
1714 #else
1715     static char* wxStringErrorMsg = "String type required";
1716 #endif
1717
1718
1719 wxString* wxString_in_helper(PyObject* source) {
1720     wxString* target;
1721 #if PYTHON_API_VERSION >= 1009  // Have Python unicode API
1722     if (!PyString_Check(source) && !PyUnicode_Check(source)) {
1723         PyErr_SetString(PyExc_TypeError, wxStringErrorMsg);
1724         return NULL;
1725     }
1726 #if wxUSE_UNICODE
1727     if (PyUnicode_Check(source)) {
1728         target = new wxString();
1729         size_t len = PyUnicode_GET_SIZE(source);
1730         if (len) {
1731             PyUnicode_AsWideChar((PyUnicodeObject*)source, target->GetWriteBuf(len), len);
1732             target->UngetWriteBuf();
1733         }
1734     } else {
1735         // It is a string, get pointers to it and transform to unicode
1736         char* tmpPtr; int tmpSize;
1737         PyString_AsStringAndSize(source, &tmpPtr, &tmpSize);
1738         target = new wxString(tmpPtr, *wxConvCurrent, tmpSize);
1739     }
1740 #else
1741     char* tmpPtr; int tmpSize;
1742     if (PyString_AsStringAndSize(source, &tmpPtr, &tmpSize) == -1) {
1743         PyErr_SetString(PyExc_TypeError, "Unable to convert string");
1744         return NULL;
1745     }
1746     target = new wxString(tmpPtr, tmpSize);
1747 #endif // wxUSE_UNICODE
1748
1749 #else  // No Python unicode API (1.5.2)
1750     if (!PyString_Check(source)) {
1751         PyErr_SetString(PyExc_TypeError, wxStringErrorMsg);
1752         return NULL;
1753     }
1754     target = new wxString(PyString_AS_STRING(source), PyString_GET_SIZE(source));
1755 #endif
1756     return target;
1757 }
1758
1759
1760 // Similar to above except doesn't use "new" and doesn't set an exception
1761 wxString Py2wxString(PyObject* source)
1762 {
1763     wxString target;
1764     bool     doDecRef = FALSE;
1765
1766 #if PYTHON_API_VERSION >= 1009  // Have Python unicode API
1767     if (!PyString_Check(source) && !PyUnicode_Check(source)) {
1768         // Convert to String if not one already...  (TODO: Unicode too?)
1769         source = PyObject_Str(source);
1770         doDecRef = TRUE;
1771     }
1772
1773 #if wxUSE_UNICODE
1774     if (PyUnicode_Check(source)) {
1775         size_t len = PyUnicode_GET_SIZE(source);
1776         if (len) {
1777             PyUnicode_AsWideChar((PyUnicodeObject*)source, target.GetWriteBuf(len), len);
1778             target.UngetWriteBuf();
1779         }
1780     } else {
1781         // It is a string, get pointers to it and transform to unicode
1782         char* tmpPtr; int tmpSize;
1783         PyString_AsStringAndSize(source, &tmpPtr, &tmpSize);
1784         target = wxString(tmpPtr, *wxConvCurrent, tmpSize);
1785     }
1786 #else
1787     char* tmpPtr; int tmpSize;
1788     PyString_AsStringAndSize(source, &tmpPtr, &tmpSize);
1789     target = wxString(tmpPtr, tmpSize);
1790 #endif // wxUSE_UNICODE
1791
1792 #else  // No Python unicode API (1.5.2)
1793     if (!PyString_Check(source)) {
1794         // Convert to String if not one already...
1795         source = PyObject_Str(source);
1796         doDecRef = TRUE;
1797     }
1798     target = wxString(PyString_AS_STRING(source), PyString_GET_SIZE(source));
1799 #endif
1800
1801     if (doDecRef)
1802         Py_DECREF(source);
1803     return target;
1804 }
1805
1806
1807 // Make either a Python String or Unicode object, depending on build mode
1808 PyObject* wx2PyString(const wxString& src)
1809 {
1810     PyObject* str;
1811 #if wxUSE_UNICODE
1812     str = PyUnicode_FromWideChar(src.c_str(), src.Len());
1813 #else
1814     str = PyString_FromStringAndSize(src.c_str(), src.Len());
1815 #endif
1816     return str;
1817 }
1818
1819
1820 //----------------------------------------------------------------------
1821
1822
1823 byte* byte_LIST_helper(PyObject* source) {
1824     if (!PyList_Check(source)) {
1825         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
1826         return NULL;
1827     }
1828     int count = PyList_Size(source);
1829     byte* temp = new byte[count];
1830     if (! temp) {
1831         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
1832         return NULL;
1833     }
1834     for (int x=0; x<count; x++) {
1835         PyObject* o = PyList_GetItem(source, x);
1836         if (! PyInt_Check(o)) {
1837             PyErr_SetString(PyExc_TypeError, "Expected a list of integers.");
1838             return NULL;
1839         }
1840         temp[x] = (byte)PyInt_AsLong(o);
1841     }
1842     return temp;
1843 }
1844
1845
1846 int* int_LIST_helper(PyObject* source) {
1847     if (!PyList_Check(source)) {
1848         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
1849         return NULL;
1850     }
1851     int count = PyList_Size(source);
1852     int* temp = new int[count];
1853     if (! temp) {
1854         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
1855         return NULL;
1856     }
1857     for (int x=0; x<count; x++) {
1858         PyObject* o = PyList_GetItem(source, x);
1859         if (! PyInt_Check(o)) {
1860             PyErr_SetString(PyExc_TypeError, "Expected a list of integers.");
1861             return NULL;
1862         }
1863         temp[x] = PyInt_AsLong(o);
1864     }
1865     return temp;
1866 }
1867
1868
1869 long* long_LIST_helper(PyObject* source) {
1870     if (!PyList_Check(source)) {
1871         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
1872         return NULL;
1873     }
1874     int count = PyList_Size(source);
1875     long* temp = new long[count];
1876     if (! temp) {
1877         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
1878         return NULL;
1879     }
1880     for (int x=0; x<count; x++) {
1881         PyObject* o = PyList_GetItem(source, x);
1882         if (! PyInt_Check(o)) {
1883             PyErr_SetString(PyExc_TypeError, "Expected a list of integers.");
1884             return NULL;
1885         }
1886         temp[x] = PyInt_AsLong(o);
1887     }
1888     return temp;
1889 }
1890
1891
1892 char** string_LIST_helper(PyObject* source) {
1893     if (!PyList_Check(source)) {
1894         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
1895         return NULL;
1896     }
1897     int count = PyList_Size(source);
1898     char** temp = new char*[count];
1899     if (! temp) {
1900         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
1901         return NULL;
1902     }
1903     for (int x=0; x<count; x++) {
1904         PyObject* o = PyList_GetItem(source, x);
1905         if (! PyString_Check(o)) {
1906             PyErr_SetString(PyExc_TypeError, "Expected a list of strings.");
1907             return NULL;
1908         }
1909         temp[x] = PyString_AsString(o);
1910     }
1911     return temp;
1912 }
1913
1914 //--------------------------------
1915 // Part of patch from Tim Hochberg
1916 static inline bool wxPointFromObjects(PyObject* o1, PyObject* o2, wxPoint* point) {
1917     if (PyInt_Check(o1) && PyInt_Check(o2)) {
1918         point->x = PyInt_AS_LONG(o1);
1919         point->y = PyInt_AS_LONG(o2);
1920         return true;
1921     }
1922     if (PyFloat_Check(o1) && PyFloat_Check(o2)) {
1923         point->x = (int)PyFloat_AS_DOUBLE(o1);
1924         point->y = (int)PyFloat_AS_DOUBLE(o2);
1925         return true;
1926     }
1927     if (PyInstance_Check(o1) || PyInstance_Check(o2)) {
1928         // Disallow instances because they can cause havok
1929         return false;
1930     }
1931     if (PyNumber_Check(o1) && PyNumber_Check(o2)) {
1932         // I believe this excludes instances, so this should be safe without INCREFFing o1 and o2
1933         point->x = PyInt_AsLong(o1);
1934         point->y = PyInt_AsLong(o2);
1935         return true;
1936     }
1937     return false;
1938 }
1939
1940
1941 wxPoint* wxPoint_LIST_helper(PyObject* source, int *count) {
1942     // Putting all of the declarations here allows
1943     // us to put the error handling all in one place.
1944     int x;
1945     wxPoint* temp;
1946     PyObject *o, *o1, *o2;
1947     bool isFast = PyList_Check(source) || PyTuple_Check(source);
1948
1949     if (!PySequence_Check(source)) {
1950         goto error0;
1951     }
1952
1953     // The length of the sequence is returned in count.
1954     *count = PySequence_Length(source);
1955     if (*count < 0) {
1956         goto error0;
1957     }
1958
1959     temp = new wxPoint[*count];
1960     if (!temp) {
1961         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
1962         return NULL;
1963     }
1964     for (x=0; x<*count; x++) {
1965         // Get an item: try fast way first.
1966         if (isFast) {
1967             o = PySequence_Fast_GET_ITEM(source, x);
1968         }
1969         else {
1970             o = PySequence_GetItem(source, x);
1971             if (o == NULL) {
1972                 goto error1;
1973             }
1974         }
1975
1976         // Convert o to wxPoint.
1977         if ((PyTuple_Check(o) && PyTuple_GET_SIZE(o) == 2) ||
1978             (PyList_Check(o) && PyList_GET_SIZE(o) == 2)) {
1979             o1 = PySequence_Fast_GET_ITEM(o, 0);
1980             o2 = PySequence_Fast_GET_ITEM(o, 1);
1981             if (!wxPointFromObjects(o1, o2, &temp[x])) {
1982                 goto error2;
1983             }
1984         }
1985         else if (PyInstance_Check(o)) {
1986             wxPoint* pt;
1987             if (SWIG_GetPtrObj(o, (void **)&pt, "_wxPoint_p")) {
1988                 goto error2;
1989             }
1990             temp[x] = *pt;
1991         }
1992         else if (PySequence_Check(o) && PySequence_Length(o) == 2) {
1993             o1 = PySequence_GetItem(o, 0);
1994             o2 = PySequence_GetItem(o, 1);
1995             if (!wxPointFromObjects(o1, o2, &temp[x])) {
1996                 goto error3;
1997             }
1998             Py_DECREF(o1);
1999             Py_DECREF(o2);
2000         }
2001         else {
2002             goto error2;
2003         }
2004         // Clean up.
2005         if (!isFast)
2006             Py_DECREF(o);
2007     }
2008     return temp;
2009
2010 error3:
2011     Py_DECREF(o1);
2012     Py_DECREF(o2);
2013 error2:
2014     if (!isFast)
2015         Py_DECREF(o);
2016 error1:
2017     delete [] temp;
2018 error0:
2019     PyErr_SetString(PyExc_TypeError, "Expected a sequence of length-2 sequences or wxPoints.");
2020     return NULL;
2021 }
2022 // end of patch
2023 //------------------------------
2024
2025
2026 wxBitmap** wxBitmap_LIST_helper(PyObject* source) {
2027     if (!PyList_Check(source)) {
2028         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
2029         return NULL;
2030     }
2031     int count = PyList_Size(source);
2032     wxBitmap** temp = new wxBitmap*[count];
2033     if (! temp) {
2034         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
2035         return NULL;
2036     }
2037     for (int x=0; x<count; x++) {
2038         PyObject* o = PyList_GetItem(source, x);
2039         if (PyInstance_Check(o)) {
2040             wxBitmap*    pt;
2041             if (SWIG_GetPtrObj(o, (void **) &pt,"_wxBitmap_p")) {
2042                 PyErr_SetString(PyExc_TypeError,"Expected _wxBitmap_p.");
2043                 return NULL;
2044             }
2045             temp[x] = pt;
2046         }
2047         else {
2048             PyErr_SetString(PyExc_TypeError, "Expected a list of wxBitmaps.");
2049             return NULL;
2050         }
2051     }
2052     return temp;
2053 }
2054
2055
2056
2057 wxString* wxString_LIST_helper(PyObject* source) {
2058     if (!PyList_Check(source)) {
2059         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
2060         return NULL;
2061     }
2062     int count = PyList_Size(source);
2063     wxString* temp = new wxString[count];
2064     if (! temp) {
2065         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
2066         return NULL;
2067     }
2068     for (int x=0; x<count; x++) {
2069         PyObject* o = PyList_GetItem(source, x);
2070 #if PYTHON_API_VERSION >= 1009
2071         if (! PyString_Check(o) && ! PyUnicode_Check(o)) {
2072             PyErr_SetString(PyExc_TypeError, "Expected a list of string or unicode objects.");
2073             return NULL;
2074         }
2075 #else
2076         if (! PyString_Check(o)) {
2077             PyErr_SetString(PyExc_TypeError, "Expected a list of strings.");
2078             return NULL;
2079         }
2080 #endif
2081
2082         wxString* pStr = wxString_in_helper(o);
2083         temp[x] = *pStr;
2084         delete pStr;
2085     }
2086     return temp;
2087 }
2088
2089
2090 wxAcceleratorEntry* wxAcceleratorEntry_LIST_helper(PyObject* source) {
2091     if (!PyList_Check(source)) {
2092         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
2093         return NULL;
2094     }
2095     int count                = PyList_Size(source);
2096     wxAcceleratorEntry* temp = new wxAcceleratorEntry[count];
2097     if (! temp) {
2098         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
2099         return NULL;
2100     }
2101     for (int x=0; x<count; x++) {
2102         PyObject* o = PyList_GetItem(source, x);
2103         if (PyInstance_Check(o)) {
2104             wxAcceleratorEntry* ae;
2105             if (SWIG_GetPtrObj(o, (void **) &ae,"_wxAcceleratorEntry_p")) {
2106                 PyErr_SetString(PyExc_TypeError,"Expected _wxAcceleratorEntry_p.");
2107                 return NULL;
2108             }
2109             temp[x] = *ae;
2110         }
2111         else if (PyTuple_Check(o)) {
2112             PyObject* o1 = PyTuple_GetItem(o, 0);
2113             PyObject* o2 = PyTuple_GetItem(o, 1);
2114             PyObject* o3 = PyTuple_GetItem(o, 2);
2115             temp[x].Set(PyInt_AsLong(o1), PyInt_AsLong(o2), PyInt_AsLong(o3));
2116         }
2117         else {
2118             PyErr_SetString(PyExc_TypeError, "Expected a list of 3-tuples or wxAcceleratorEntry objects.");
2119             return NULL;
2120         }
2121     }
2122     return temp;
2123 }
2124
2125
2126 wxPen** wxPen_LIST_helper(PyObject* source) {
2127     if (!PyList_Check(source)) {
2128         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
2129         return NULL;
2130     }
2131     int count = PyList_Size(source);
2132     wxPen** temp = new wxPen*[count];
2133     if (!temp) {
2134         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
2135         return NULL;
2136     }
2137     for (int x=0; x<count; x++) {
2138         PyObject* o = PyList_GetItem(source, x);
2139         if (PyInstance_Check(o)) {
2140             wxPen*  pt;
2141             if (SWIG_GetPtrObj(o, (void **) &pt,"_wxPen_p")) {
2142                 delete temp;
2143                 PyErr_SetString(PyExc_TypeError,"Expected _wxPen_p.");
2144                 return NULL;
2145             }
2146             temp[x] = pt;
2147         }
2148         else {
2149             delete temp;
2150             PyErr_SetString(PyExc_TypeError, "Expected a list of wxPens.");
2151             return NULL;
2152         }
2153     }
2154     return temp;
2155 }
2156
2157
2158 bool wxPy2int_seq_helper(PyObject* source, int* i1, int* i2) {
2159     bool isFast = PyList_Check(source) || PyTuple_Check(source);
2160     PyObject *o1, *o2;
2161
2162     if (!PySequence_Check(source) || PySequence_Length(source) != 2)
2163         return FALSE;
2164
2165     if (isFast) {
2166         o1 = PySequence_Fast_GET_ITEM(source, 0);
2167         o2 = PySequence_Fast_GET_ITEM(source, 1);
2168     }
2169     else {
2170         o1 = PySequence_GetItem(source, 0);
2171         o2 = PySequence_GetItem(source, 1);
2172     }
2173
2174     *i1 = PyInt_AsLong(o1);
2175     *i2 = PyInt_AsLong(o2);
2176
2177     if (! isFast) {
2178         Py_DECREF(o1);
2179         Py_DECREF(o2);
2180     }
2181     return TRUE;
2182 }
2183
2184
2185 bool wxPy4int_seq_helper(PyObject* source, int* i1, int* i2, int* i3, int* i4) {
2186     bool isFast = PyList_Check(source) || PyTuple_Check(source);
2187     PyObject *o1, *o2, *o3, *o4;
2188
2189     if (!PySequence_Check(source) || PySequence_Length(source) != 4)
2190         return FALSE;
2191
2192     if (isFast) {
2193         o1 = PySequence_Fast_GET_ITEM(source, 0);
2194         o2 = PySequence_Fast_GET_ITEM(source, 1);
2195         o3 = PySequence_Fast_GET_ITEM(source, 2);
2196         o4 = PySequence_Fast_GET_ITEM(source, 3);
2197     }
2198     else {
2199         o1 = PySequence_GetItem(source, 0);
2200         o2 = PySequence_GetItem(source, 1);
2201         o3 = PySequence_GetItem(source, 2);
2202         o4 = PySequence_GetItem(source, 3);
2203     }
2204
2205     *i1 = PyInt_AsLong(o1);
2206     *i2 = PyInt_AsLong(o2);
2207     *i3 = PyInt_AsLong(o3);
2208     *i4 = PyInt_AsLong(o4);
2209
2210     if (! isFast) {
2211         Py_DECREF(o1);
2212         Py_DECREF(o2);
2213         Py_DECREF(o3);
2214         Py_DECREF(o4);
2215     }
2216     return TRUE;
2217 }
2218
2219
2220 //----------------------------------------------------------------------
2221
2222 bool wxSize_helper(PyObject* source, wxSize** obj) {
2223
2224     // If source is an object instance then it may already be the right type
2225     if (PyInstance_Check(source)) {
2226         wxSize* ptr;
2227         if (SWIG_GetPtrObj(source, (void **)&ptr, "_wxSize_p"))
2228             goto error;
2229         *obj = ptr;
2230         return TRUE;
2231     }
2232     // otherwise a 2-tuple of integers is expected
2233     else if (PySequence_Check(source) && PyObject_Length(source) == 2) {
2234         PyObject* o1 = PySequence_GetItem(source, 0);
2235         PyObject* o2 = PySequence_GetItem(source, 1);
2236         if (!PyNumber_Check(o1) || !PyNumber_Check(o2)) {
2237             Py_DECREF(o1);
2238             Py_DECREF(o2);
2239             goto error;
2240         }
2241         **obj = wxSize(PyInt_AsLong(o1), PyInt_AsLong(o2));
2242         Py_DECREF(o1);
2243         Py_DECREF(o2);
2244         return TRUE;
2245     }
2246
2247  error:
2248     PyErr_SetString(PyExc_TypeError, "Expected a 2-tuple of integers or a wxSize object.");
2249     return FALSE;
2250 }
2251
2252
2253 bool wxPoint_helper(PyObject* source, wxPoint** obj) {
2254
2255     // If source is an object instance then it may already be the right type
2256     if (PyInstance_Check(source)) {
2257         wxPoint* ptr;
2258         if (SWIG_GetPtrObj(source, (void **)&ptr, "_wxPoint_p"))
2259             goto error;
2260         *obj = ptr;
2261         return TRUE;
2262     }
2263     // otherwise a length-2 sequence of integers is expected
2264     if (PySequence_Check(source) && PySequence_Length(source) == 2) {
2265         PyObject* o1 = PySequence_GetItem(source, 0);
2266         PyObject* o2 = PySequence_GetItem(source, 1);
2267         // This should really check for integers, not numbers -- but that would break code.
2268         if (!PyNumber_Check(o1) || !PyNumber_Check(o2)) {
2269             Py_DECREF(o1);
2270             Py_DECREF(o2);
2271             goto error;
2272         }
2273         **obj = wxPoint(PyInt_AsLong(o1), PyInt_AsLong(o2));
2274         Py_DECREF(o1);
2275         Py_DECREF(o2);
2276         return TRUE;
2277     }
2278  error:
2279     PyErr_SetString(PyExc_TypeError, "Expected a 2-tuple of integers or a wxPoint object.");
2280     return FALSE;
2281 }
2282
2283
2284
2285 bool wxRealPoint_helper(PyObject* source, wxRealPoint** obj) {
2286
2287     // If source is an object instance then it may already be the right type
2288     if (PyInstance_Check(source)) {
2289         wxRealPoint* ptr;
2290         if (SWIG_GetPtrObj(source, (void **)&ptr, "_wxRealPoint_p"))
2291             goto error;
2292         *obj = ptr;
2293         return TRUE;
2294     }
2295     // otherwise a 2-tuple of floats is expected
2296     else if (PySequence_Check(source) && PyObject_Length(source) == 2) {
2297         PyObject* o1 = PySequence_GetItem(source, 0);
2298         PyObject* o2 = PySequence_GetItem(source, 1);
2299         if (!PyNumber_Check(o1) || !PyNumber_Check(o2)) {
2300             Py_DECREF(o1);
2301             Py_DECREF(o2);
2302             goto error;
2303         }
2304         **obj = wxRealPoint(PyFloat_AsDouble(o1), PyFloat_AsDouble(o2));
2305         Py_DECREF(o1);
2306         Py_DECREF(o2);
2307         return TRUE;
2308     }
2309
2310  error:
2311     PyErr_SetString(PyExc_TypeError, "Expected a 2-tuple of floats or a wxRealPoint object.");
2312     return FALSE;
2313 }
2314
2315
2316
2317
2318 bool wxRect_helper(PyObject* source, wxRect** obj) {
2319
2320     // If source is an object instance then it may already be the right type
2321     if (PyInstance_Check(source)) {
2322         wxRect* ptr;
2323         if (SWIG_GetPtrObj(source, (void **)&ptr, "_wxRect_p"))
2324             goto error;
2325         *obj = ptr;
2326         return TRUE;
2327     }
2328     // otherwise a 4-tuple of integers is expected
2329     else if (PySequence_Check(source) && PyObject_Length(source) == 4) {
2330         PyObject* o1 = PySequence_GetItem(source, 0);
2331         PyObject* o2 = PySequence_GetItem(source, 1);
2332         PyObject* o3 = PySequence_GetItem(source, 2);
2333         PyObject* o4 = PySequence_GetItem(source, 3);
2334         if (!PyNumber_Check(o1) || !PyNumber_Check(o2) ||
2335             !PyNumber_Check(o3) || !PyNumber_Check(o4)) {
2336             Py_DECREF(o1);
2337             Py_DECREF(o2);
2338             Py_DECREF(o3);
2339             Py_DECREF(o4);
2340             goto error;
2341         }
2342         **obj = wxRect(PyInt_AsLong(o1), PyInt_AsLong(o2),
2343                        PyInt_AsLong(o3), PyInt_AsLong(o4));
2344         Py_DECREF(o1);
2345         Py_DECREF(o2);
2346         Py_DECREF(o3);
2347         Py_DECREF(o4);
2348         return TRUE;
2349     }
2350
2351  error:
2352     PyErr_SetString(PyExc_TypeError, "Expected a 4-tuple of integers or a wxRect object.");
2353     return FALSE;
2354 }
2355
2356
2357
2358 bool wxColour_helper(PyObject* source, wxColour** obj) {
2359
2360     // If source is an object instance then it may already be the right type
2361     if (PyInstance_Check(source)) {
2362         wxColour* ptr;
2363         if (SWIG_GetPtrObj(source, (void **)&ptr, "_wxColour_p"))
2364             goto error;
2365         *obj = ptr;
2366         return TRUE;
2367     }
2368     // otherwise check for a string
2369     else if (PyString_Check(source) || PyUnicode_Check(source)) {
2370         wxString spec = Py2wxString(source);
2371         if (spec.GetChar(0) == '#' && spec.Length() == 7) {  // It's  #RRGGBB
2372             long red, green, blue;
2373             red = green = blue = 0;
2374             spec.Mid(1,2).ToLong(&red,   16);
2375             spec.Mid(3,2).ToLong(&green, 16);
2376             spec.Mid(5,2).ToLong(&blue,  16);
2377
2378             **obj = wxColour(red, green, blue);
2379             return TRUE;
2380         }
2381         else {                                       // it's a colour name
2382             **obj = wxColour(spec);
2383             return TRUE;
2384         }
2385     }
2386     // last chance: 3-tuple of integers is expected
2387     else if (PySequence_Check(source) && PyObject_Length(source) == 3) {
2388         PyObject* o1 = PySequence_GetItem(source, 0);
2389         PyObject* o2 = PySequence_GetItem(source, 1);
2390         PyObject* o3 = PySequence_GetItem(source, 2);
2391         if (!PyNumber_Check(o1) || !PyNumber_Check(o2) || !PyNumber_Check(o3)) {
2392             Py_DECREF(o1);
2393             Py_DECREF(o2);
2394             Py_DECREF(o3);
2395             goto error;
2396         }
2397         **obj = wxColour(PyInt_AsLong(o1), PyInt_AsLong(o2), PyInt_AsLong(o3));
2398         Py_DECREF(o1);
2399         Py_DECREF(o2);
2400         Py_DECREF(o3);
2401         return TRUE;
2402     }
2403
2404  error:
2405     PyErr_SetString(PyExc_TypeError,
2406                     "Expected a wxColour object or a string containing a colour name or '#RRGGBB'.");
2407     return FALSE;
2408 }
2409
2410
2411
2412 bool wxPoint2DDouble_helper(PyObject* source, wxPoint2DDouble** obj) {
2413     // If source is an object instance then it may already be the right type
2414     if (PyInstance_Check(source)) {
2415         wxPoint2DDouble* ptr;
2416         if (SWIG_GetPtrObj(source, (void **)&ptr, "_wxPoint2DDouble_p"))
2417             goto error;
2418         *obj = ptr;
2419         return TRUE;
2420     }
2421     // otherwise a length-2 sequence of floats is expected
2422     if (PySequence_Check(source) && PySequence_Length(source) == 2) {
2423         PyObject* o1 = PySequence_GetItem(source, 0);
2424         PyObject* o2 = PySequence_GetItem(source, 1);
2425         // This should really check for integers, not numbers -- but that would break code.
2426         if (!PyNumber_Check(o1) || !PyNumber_Check(o2)) {
2427             Py_DECREF(o1);
2428             Py_DECREF(o2);
2429             goto error;
2430         }
2431         **obj = wxPoint2DDouble(PyFloat_AsDouble(o1), PyFloat_AsDouble(o2));
2432         Py_DECREF(o1);
2433         Py_DECREF(o2);
2434         return TRUE;
2435     }
2436  error:
2437     PyErr_SetString(PyExc_TypeError, "Expected a 2-tuple of floats or a wxPoint2DDouble object.");
2438     return FALSE;
2439 }
2440
2441
2442
2443 //----------------------------------------------------------------------
2444
2445 PyObject* wxArrayString2PyList_helper(const wxArrayString& arr) {
2446
2447     PyObject* list = PyList_New(0);
2448     for (size_t i=0; i < arr.GetCount(); i++) {
2449 #if wxUSE_UNICODE
2450         PyObject* str = PyUnicode_FromWideChar(arr[i].c_str(), arr[i].Len());
2451 #else
2452         PyObject* str = PyString_FromStringAndSize(arr[i].c_str(), arr[i].Len());
2453 #endif
2454         PyList_Append(list, str);
2455         Py_DECREF(str);
2456     }
2457     return list;
2458 }
2459
2460
2461 PyObject* wxArrayInt2PyList_helper(const wxArrayInt& arr) {
2462
2463     PyObject* list = PyList_New(0);
2464     for (size_t i=0; i < arr.GetCount(); i++) {
2465         PyObject* number = PyInt_FromLong(arr[i]);
2466         PyList_Append(list, number);
2467         Py_DECREF(number);
2468     }
2469     return list;
2470 }
2471
2472
2473 //----------------------------------------------------------------------
2474 //----------------------------------------------------------------------
2475
2476
2477
2478