utils/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 #ifdef __WXGTK__
  15 #include "gtk/gtk.h"
  16 #endif
  17
  18 #undef DEBUG
  19 #include <Python.h>
  20 #include "helpers.h"
  21 #ifdef __WXMSW__
  22 #include <wx/msw/private.h>
  23 #undef FindWindow
  24 #undef GetCharWidth
  25 #undef LoadAccelerators
  26 #undef GetClassInfo
  27 #undef GetClassName
  28 #endif
  29 #include <wx/module.h>
  30
  31
  32 //---------------------------------------------------------------------------
  33
  34 //wxHashTable*  wxPyWindows = NULL;
  35
  36
  37 wxPoint     wxPyDefaultPosition;        //wxDefaultPosition);
  38 wxSize      wxPyDefaultSize;            //wxDefaultSize);
  39 wxString    wxPyEmptyStr("");
  40
  41
  42
  43 #ifdef __WXMSW__             // If building for win32...
  44 //----------------------------------------------------------------------
  45 // This gets run when the DLL is loaded.  We just need to save a handle.
  46 //----------------------------------------------------------------------
  47
  48 BOOL WINAPI DllMain(
  49     HINSTANCE   hinstDLL,    // handle to DLL module
  50     DWORD       fdwReason,   // reason for calling function
  51     LPVOID      lpvReserved  // reserved
  52    )
  53 {
  54     wxSetInstance(hinstDLL);
  55     return 1;
  56 }
  57 #endif
  58
  59 //----------------------------------------------------------------------
  60 // Class for implementing the wxp main application shell.
  61 //----------------------------------------------------------------------
  62
  63 wxPyApp *wxPythonApp = NULL;            // Global instance of application object
  64
  65
  66 wxPyApp::wxPyApp() {
  67 //    printf("**** ctor\n");
  68 }
  69
  70 wxPyApp::~wxPyApp() {
  71 //    printf("**** dtor\n");
  72 }
  73
  74
  75 // This one isn't acutally called...  See __wxStart()
  76 bool wxPyApp::OnInit(void) {
  77     return false;
  78 }
  79
  80 int  wxPyApp::MainLoop(void) {
  81     int retval = wxApp::MainLoop();
  82     AfterMainLoop();
  83     return retval;
  84 }
  85
  86
  87 void wxPyApp::AfterMainLoop(void) {
  88     // more stuff from wxEntry...
  89
  90     if (wxPythonApp->GetTopWindow()) {
  91         // Forcibly delete the window.
  92         if (wxPythonApp->GetTopWindow()->IsKindOf(CLASSINFO(wxFrame)) ||
  93             wxPythonApp->GetTopWindow()->IsKindOf(CLASSINFO(wxDialog))) {
  94
  95             wxPythonApp->GetTopWindow()->Close(TRUE);
  96             wxPythonApp->DeletePendingObjects();
  97         }
  98         else {
  99             delete wxPythonApp->GetTopWindow();
 100             wxPythonApp->SetTopWindow(NULL);
 101         }
 102     }
 103 #ifdef __WXGTK__
 104       wxPythonApp->DeletePendingObjects();
 105 #endif
 106
 107     wxPythonApp->OnExit();
 108     wxApp::CleanUp();
 109 //    delete wxPythonApp;
 110 }
 111
 112
 113 //---------------------------------------------------------------------
 114 // a few native methods to add to the module
 115 //----------------------------------------------------------------------
 116
 117
 118 // This is where we pick up the first part of the wxEntry functionality...
 119 // The rest is in __wxStart and  AfterMainLoop.  This function is called when
 120 // wxpc is imported.  (Before there is a wxApp object.)
 121 void __wxPreStart()
 122 {
 123     // Bail out if there is already windows created.  This means that the
 124     // toolkit has already been initialized, as in embedding wxPython in
 125     // a C++ wxWindows app.
 126     if (wxTopLevelWindows.Number() > 0)
 127         return;
 128
 129 #ifdef __WXMSW__
 130     wxApp::Initialize();
 131 #endif
 132
 133 #ifdef __WXGTK__
 134     PyObject* sysargv = PySys_GetObject("argv");
 135     int argc = PyList_Size(sysargv);
 136     char** argv = new char*[argc+1];
 137     int x;
 138     for(x=0; x<argc; x++)
 139         argv[x] = PyString_AsString(PyList_GetItem(sysargv, x));
 140     argv[argc] = NULL;
 141
 142     gtk_set_locale();
 143     gtk_init( &argc, &argv );
 144     delete [] argv;
 145
 146     wxApp::Initialize();     // may return FALSE. Should we check?
 147 #endif
 148
 149 }
 150
 151
 152 #ifdef WXP_WITH_THREAD
 153 PyThreadState*  wxPyEventThreadState = NULL;
 154 bool            wxPyInEvent = false;
 155 #endif
 156 static char* __nullArgv[1] = { 0 };
 157
 158 // Start the user application, user App's OnInit method is a parameter here
 159 PyObject* __wxStart(PyObject* /* self */, PyObject* args)
 160 {
 161     PyObject*   onInitFunc = NULL;
 162     PyObject*   arglist;
 163     PyObject*   result;
 164     long        bResult;
 165
 166 #ifdef WXP_WITH_THREAD
 167     wxPyEventThreadState = PyThreadState_Get();
 168 #endif
 169
 170     if (!PyArg_ParseTuple(args, "O", &onInitFunc))
 171         return NULL;
 172
 173     if (wxTopLevelWindows.Number() > 0) {
 174         PyErr_SetString(PyExc_TypeError, "Only 1 wxApp per process!");
 175         return NULL;
 176     }
 177
 178
 179     // This is the next part of the wxEntry functionality...
 180     wxPythonApp->argc = 0;
 181     wxPythonApp->argv = NULL;
 182     wxPythonApp->OnInitGui();
 183
 184
 185     // Call the Python App's OnInit function
 186     arglist = PyTuple_New(0);
 187
 188     // Py_END_ALLOW_THREADS;  ****  __wxStart was called from Python,
 189     //                              should already have the lock
 190     result = PyEval_CallObject(onInitFunc, arglist);
 191     // Py_BEGIN_ALLOW_THREADS;
 192
 193     if (!result) {
 194         PyErr_Print();
 195         exit(1);
 196     }
 197
 198     if (! PyInt_Check(result)) {
 199         PyErr_SetString(PyExc_TypeError, "OnInit should return a boolean value");
 200         return NULL;
 201     }
 202     bResult = PyInt_AS_LONG(result);
 203     if (! bResult) {
 204         wxPythonApp->DeletePendingObjects();
 205         wxPythonApp->OnExit();
 206         wxApp::CleanUp();
 207         PyErr_SetString(PyExc_SystemExit, "OnInit returned false, exiting...");
 208         return NULL;
 209     }
 210
 211 #ifdef __WXGTK__
 212     wxTheApp->m_initialized = (wxTopLevelWindows.Number() > 0);
 213 #endif
 214
 215     Py_INCREF(Py_None);
 216     return Py_None;
 217 }
 218
 219
 220
 221
 222
 223 PyObject* wxPython_dict;
 224 PyObject* __wxSetDictionary(PyObject* /* self */, PyObject* args)
 225 {
 226
 227     if (!PyArg_ParseTuple(args, "O", &wxPython_dict))
 228         return NULL;
 229
 230     if (!PyDict_Check(wxPython_dict)) {
 231         PyErr_SetString(PyExc_TypeError, "_wxSetDictionary must have dictionary object!");
 232         return NULL;
 233     }
 234 #ifdef __WXMOTIF__
 235 #define wxPlatform "__WXMOTIF__"
 236 #endif
 237 #ifdef __WXQT__
 238 #define wxPlatform "__WXQT__"
 239 #endif
 240 #ifdef __WXGTK__
 241 #define wxPlatform "__WXGTK__"
 242 #endif
 243 #if defined(__WIN32__) || defined(__WXMSW__)
 244 #define wxPlatform "__WXMSW__"
 245 #endif
 246 #ifdef __WXMAC__
 247 #define wxPlatform "__WXMAC__"
 248 #endif
 249
 250     PyDict_SetItemString(wxPython_dict, "wxPlatform", PyString_FromString(wxPlatform));
 251
 252     Py_INCREF(Py_None);
 253     return Py_None;
 254 }
 255
 256
 257 //---------------------------------------------------------------------------
 258
 259
 260 static
 261 PyObject* wxPyConstructObject(void* ptr, char* className)
 262 {
 263     char    buff[64];               // should always be big enough...
 264     char    swigptr[64];
 265
 266     sprintf(buff, "_%s_p", className);
 267     SWIG_MakePtr(swigptr, ptr, buff);
 268
 269     sprintf(buff, "%sPtr", className);
 270     PyObject* classobj = PyDict_GetItemString(wxPython_dict, buff);
 271     if (! classobj) {
 272         Py_INCREF(Py_None);
 273         return Py_None;
 274     }
 275
 276     PyObject* arg = Py_BuildValue("(s)", swigptr);
 277     PyObject* obj = PyInstance_New(classobj, arg, NULL);
 278     Py_DECREF(arg);
 279
 280     return obj;
 281 }
 282
 283
 284
 285 wxPyCallback::wxPyCallback(PyObject* func) {
 286     m_func = func;
 287     Py_INCREF(m_func);
 288 }
 289
 290 wxPyCallback::~wxPyCallback() {
 291 #ifdef WXP_WITH_THREAD
 292     //if (! wxPyInEvent)
 293         PyEval_RestoreThread(wxPyEventThreadState);
 294 #endif
 295
 296     Py_DECREF(m_func);
 297
 298 #ifdef WXP_WITH_THREAD
 299     //if (! wxPyInEvent)
 300         PyEval_SaveThread();
 301 #endif
 302 }
 303
 304
 305
 306
 307 // This function is used for all events destined for Python event handlers.
 308 void wxPyCallback::EventThunker(wxEvent& event) {
 309     wxPyCallback*   cb = (wxPyCallback*)event.m_callbackUserData;
 310     PyObject*       func = cb->m_func;
 311     PyObject*       result;
 312     PyObject*       arg;
 313     PyObject*       tuple;
 314
 315
 316 #ifdef WXP_WITH_THREAD
 317     PyEval_RestoreThread(wxPyEventThreadState);
 318     wxPyInEvent = true;
 319 #endif
 320     arg = wxPyConstructObject((void*)&event, event.GetClassInfo()->GetClassName());
 321
 322     tuple = PyTuple_New(1);
 323     PyTuple_SET_ITEM(tuple, 0, arg);
 324     result = PyEval_CallObject(func, tuple);
 325     Py_DECREF(tuple);
 326     if (result) {
 327         Py_DECREF(result);
 328         PyErr_Clear();
 329     } else {
 330         PyErr_Print();
 331     }
 332 #ifdef WXP_WITH_THREAD
 333     PyEval_SaveThread();
 334     wxPyInEvent = false;
 335 #endif
 336 }
 337
 338
 339 //---------------------------------------------------------------------------
 340
 341 wxPyMenu::wxPyMenu(const wxString& title, PyObject* _func)
 342     : wxMenu(title, (wxFunction)(func ? MenuCallback : NULL)), func(0) {
 343
 344     if (_func) {
 345         func = _func;
 346         Py_INCREF(func);
 347     }
 348 }
 349
 350 wxPyMenu::~wxPyMenu() {
 351 #ifdef WXP_WITH_THREAD
 352     //if (! wxPyInEvent)
 353         PyEval_RestoreThread(wxPyEventThreadState);
 354 #endif
 355
 356     if (func)
 357         Py_DECREF(func);
 358
 359 #ifdef WXP_WITH_THREAD
 360     //if (! wxPyInEvent)
 361         PyEval_SaveThread();
 362 #endif
 363 }
 364
 365
 366 void wxPyMenu::MenuCallback(wxMenu& menu, wxCommandEvent& evt) {
 367     PyObject* evtobj;
 368     PyObject* menuobj;
 369     PyObject* func;
 370     PyObject* args;
 371     PyObject* res;
 372
 373 #ifdef WXP_WITH_THREAD
 374     PyEval_RestoreThread(wxPyEventThreadState);
 375     wxPyInEvent = true;
 376 #endif
 377     evtobj  = wxPyConstructObject((void*)&evt, "wxCommandEvent");
 378     menuobj = wxPyConstructObject((void*)&menu, "wxMenu");
 379     if (PyErr_Occurred()) {
 380         // bail out if a problem
 381         PyErr_Print();
 382         goto done;
 383     }
 384     // Now call the callback...
 385     func = ((wxPyMenu*)&menu)->func;
 386     args = PyTuple_New(2);
 387     PyTuple_SET_ITEM(args, 0, menuobj);
 388     PyTuple_SET_ITEM(args, 1, evtobj);
 389     res  = PyEval_CallObject(func, args);
 390     Py_DECREF(args);
 391     Py_XDECREF(res); /* In case res is a NULL pointer */
 392  done:
 393 #ifdef WXP_WITH_THREAD
 394     PyEval_SaveThread();
 395     wxPyInEvent = false;
 396 #endif
 397 }
 398
 399
 400 //---------------------------------------------------------------------------
 401
 402 wxPyTimer::wxPyTimer(PyObject* callback) {
 403     func = callback;
 404     Py_INCREF(func);
 405 }
 406
 407 wxPyTimer::~wxPyTimer() {
 408 #ifdef WXP_WITH_THREAD
 409     //if (! wxPyInEvent)
 410         PyEval_RestoreThread(wxPyEventThreadState);
 411 #endif
 412
 413     Py_DECREF(func);
 414
 415 #ifdef WXP_WITH_THREAD
 416     //if (! wxPyInEvent)
 417         PyEval_SaveThread();
 418 #endif
 419 }
 420
 421 void wxPyTimer::Notify() {
 422 #ifdef WXP_WITH_THREAD
 423     PyEval_RestoreThread(wxPyEventThreadState);
 424     wxPyInEvent = true;
 425 #endif
 426     PyObject*   result;
 427     PyObject*   args = Py_BuildValue("()");
 428
 429     result = PyEval_CallObject(func, args);
 430     Py_DECREF(args);
 431     if (result) {
 432         Py_DECREF(result);
 433         PyErr_Clear();
 434     } else {
 435         PyErr_Print();
 436     }
 437 #ifdef WXP_WITH_THREAD
 438     PyEval_SaveThread();
 439     wxPyInEvent = false;
 440 #endif
 441 }
 442
 443
 444 //----------------------------------------------------------------------
 445
 446 IMPLEMENT_DYNAMIC_CLASS(wxPyEvent, wxCommandEvent)
 447
 448 wxPyEvent::wxPyEvent(wxEventType commandType, PyObject* userData)
 449     : wxCommandEvent(commandType), m_userData(Py_None)
 450 {
 451     m_userData = userData;
 452     if (m_userData != Py_None) {
 453         Py_INCREF(m_userData);
 454     }
 455 }
 456
 457
 458 wxPyEvent::~wxPyEvent() {
 459 #ifdef WXP_WITH_THREAD
 460     //if (! wxPyInEvent)
 461         PyEval_RestoreThread(wxPyEventThreadState);
 462 #endif
 463     if (m_userData != Py_None) {
 464         Py_DECREF(m_userData);
 465         m_userData = Py_None;
 466     }
 467 #ifdef WXP_WITH_THREAD
 468     //if (! wxPyInEvent)
 469         PyEval_SaveThread();
 470 #endif
 471 }
 472
 473
 474 void wxPyEvent::SetUserData(PyObject* userData) {
 475     if (m_userData != Py_None) {
 476         Py_DECREF(m_userData);
 477         m_userData = Py_None;
 478     }
 479     m_userData = userData;
 480     if (m_userData != Py_None) {
 481         Py_INCREF(m_userData);
 482     }
 483 }
 484
 485
 486 PyObject* wxPyEvent::GetUserData() {
 487     return m_userData;
 488 }
 489
 490 //----------------------------------------------------------------------
 491 //----------------------------------------------------------------------
 492 // Some helper functions for typemaps in my_typemaps.i, so they won't be
 493 // imcluded in every file...
 494
 495
 496 byte* byte_LIST_helper(PyObject* source) {
 497     if (!PyList_Check(source)) {
 498         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
 499         return NULL;
 500     }
 501     int count = PyList_Size(source);
 502     byte* temp = new byte[count];
 503     if (! temp) {
 504         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
 505         return NULL;
 506     }
 507     for (int x=0; x<count; x++) {
 508         PyObject* o = PyList_GetItem(source, x);
 509         if (! PyInt_Check(o)) {
 510             PyErr_SetString(PyExc_TypeError, "Expected a list of integers.");
 511             return NULL;
 512         }
 513         temp[x] = (byte)PyInt_AsLong(o);
 514     }
 515     return temp;
 516 }
 517
 518
 519 int* int_LIST_helper(PyObject* source) {
 520     if (!PyList_Check(source)) {
 521         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
 522         return NULL;
 523     }
 524     int count = PyList_Size(source);
 525     int* temp = new int[count];
 526     if (! temp) {
 527         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
 528         return NULL;
 529     }
 530     for (int x=0; x<count; x++) {
 531         PyObject* o = PyList_GetItem(source, x);
 532         if (! PyInt_Check(o)) {
 533             PyErr_SetString(PyExc_TypeError, "Expected a list of integers.");
 534             return NULL;
 535         }
 536         temp[x] = PyInt_AsLong(o);
 537     }
 538     return temp;
 539 }
 540
 541
 542 long* long_LIST_helper(PyObject* source) {
 543     if (!PyList_Check(source)) {
 544         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
 545         return NULL;
 546     }
 547     int count = PyList_Size(source);
 548     long* temp = new long[count];
 549     if (! temp) {
 550         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
 551         return NULL;
 552     }
 553     for (int x=0; x<count; x++) {
 554         PyObject* o = PyList_GetItem(source, x);
 555         if (! PyInt_Check(o)) {
 556             PyErr_SetString(PyExc_TypeError, "Expected a list of integers.");
 557             return NULL;
 558         }
 559         temp[x] = PyInt_AsLong(o);
 560     }
 561     return temp;
 562 }
 563
 564
 565 char** string_LIST_helper(PyObject* source) {
 566     if (!PyList_Check(source)) {
 567         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
 568         return NULL;
 569     }
 570     int count = PyList_Size(source);
 571     char** temp = new char*[count];
 572     if (! temp) {
 573         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
 574         return NULL;
 575     }
 576     for (int x=0; x<count; x++) {
 577         PyObject* o = PyList_GetItem(source, x);
 578         if (! PyString_Check(o)) {
 579             PyErr_SetString(PyExc_TypeError, "Expected a list of strings.");
 580             return NULL;
 581         }
 582         temp[x] = PyString_AsString(o);
 583     }
 584     return temp;
 585 }
 586
 587
 588
 589 wxPoint* wxPoint_LIST_helper(PyObject* source) {
 590     if (!PyList_Check(source)) {
 591         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
 592         return NULL;
 593     }
 594     int count = PyList_Size(source);
 595     wxPoint* temp = new wxPoint[count];
 596     if (! temp) {
 597         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
 598         return NULL;
 599     }
 600     for (int x=0; x<count; x++) {
 601         PyObject* o = PyList_GetItem(source, x);
 602         if (PyString_Check(o)) {
 603             char*       st = PyString_AsString(o);
 604             wxPoint*    pt;
 605             if (SWIG_GetPtr(st,(void **) &pt,"_wxPoint_p")) {
 606                 PyErr_SetString(PyExc_TypeError,"Expected _wxPoint_p.");
 607                 return NULL;
 608             }
 609             temp[x] = *pt;
 610         }
 611         else if (PyTuple_Check(o)) {
 612             PyObject* o1 = PyTuple_GetItem(o, 0);
 613             PyObject* o2 = PyTuple_GetItem(o, 1);
 614
 615             temp[x].x = PyInt_AsLong(o1);
 616             temp[x].y = PyInt_AsLong(o2);
 617         }
 618         else {
 619             PyErr_SetString(PyExc_TypeError, "Expected a list of 2-tuples or wxPoints.");
 620             return NULL;
 621         }
 622     }
 623     return temp;
 624 }
 625
 626
 627 wxBitmap** wxBitmap_LIST_helper(PyObject* source) {
 628     if (!PyList_Check(source)) {
 629         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
 630         return NULL;
 631     }
 632     int count = PyList_Size(source);
 633     wxBitmap** temp = new wxBitmap*[count];
 634     if (! temp) {
 635         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
 636         return NULL;
 637     }
 638     for (int x=0; x<count; x++) {
 639         PyObject* o = PyList_GetItem(source, x);
 640         if (PyString_Check(o)) {
 641             char*       st = PyString_AsString(o);
 642             wxBitmap*    pt;
 643             if (SWIG_GetPtr(st,(void **) &pt,"_wxBitmap_p")) {
 644                 PyErr_SetString(PyExc_TypeError,"Expected _wxBitmap_p.");
 645                 return NULL;
 646             }
 647             temp[x] = pt;
 648         }
 649         else {
 650             PyErr_SetString(PyExc_TypeError, "Expected a list of wxBitmaps.");
 651             return NULL;
 652         }
 653     }
 654     return temp;
 655 }
 656
 657
 658
 659 wxString* wxString_LIST_helper(PyObject* source) {
 660     if (!PyList_Check(source)) {
 661         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
 662         return NULL;
 663     }
 664     int count = PyList_Size(source);
 665     wxString* temp = new wxString[count];
 666     if (! temp) {
 667         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
 668         return NULL;
 669     }
 670     for (int x=0; x<count; x++) {
 671         PyObject* o = PyList_GetItem(source, x);
 672         if (! PyString_Check(o)) {
 673             PyErr_SetString(PyExc_TypeError, "Expected a list of strings.");
 674             return NULL;
 675         }
 676         temp[x] = PyString_AsString(o);
 677     }
 678     return temp;
 679 }
 680
 681
 682 wxAcceleratorEntry* wxAcceleratorEntry_LIST_helper(PyObject* source) {
 683     if (!PyList_Check(source)) {
 684         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
 685         return NULL;
 686     }
 687     int count                = PyList_Size(source);
 688     wxAcceleratorEntry* temp = new wxAcceleratorEntry[count];
 689     if (! temp) {
 690         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
 691         return NULL;
 692     }
 693     for (int x=0; x<count; x++) {
 694         PyObject* o = PyList_GetItem(source, x);
 695         if (PyString_Check(o)) {
 696             char*               st = PyString_AsString(o);
 697             wxAcceleratorEntry* ae;
 698             if (SWIG_GetPtr(st,(void **) &ae,"_wxAcceleratorEntry_p")) {
 699                 PyErr_SetString(PyExc_TypeError,"Expected _wxAcceleratorEntry_p.");
 700                 return NULL;
 701             }
 702             temp[x] = *ae;
 703         }
 704         else if (PyTuple_Check(o)) {
 705             PyObject* o1 = PyTuple_GetItem(o, 0);
 706             PyObject* o2 = PyTuple_GetItem(o, 1);
 707             PyObject* o3 = PyTuple_GetItem(o, 2);
 708
 709             temp[x].m_flags   = PyInt_AsLong(o1);
 710             temp[x].m_keyCode = PyInt_AsLong(o2);
 711             temp[x].m_command = PyInt_AsLong(o3);
 712         }
 713         else {
 714             PyErr_SetString(PyExc_TypeError, "Expected a list of 3-tuples or wxAcceleratorEntry objects.");
 715             return NULL;
 716         }
 717     }
 718     return temp;
 719 }
 720
 721
 722
 723 //----------------------------------------------------------------------
 724 //----------------------------------------------------------------------
 725
 726 wxPyCallbackHelper::wxPyCallbackHelper() {
 727     m_self = NULL;
 728     m_lastFound = NULL;
 729 }
 730
 731
 732 wxPyCallbackHelper::~wxPyCallbackHelper() {
 733 #ifdef WXP_WITH_THREAD
 734     PyEval_RestoreThread(wxPyEventThreadState);
 735 #endif
 736
 737     Py_XDECREF(m_self);
 738
 739 #ifdef WXP_WITH_THREAD
 740     PyEval_SaveThread();
 741 #endif
 742 }
 743
 744 void wxPyCallbackHelper::setSelf(PyObject* self) {
 745     m_self = self;
 746     Py_INCREF(m_self);
 747 }
 748
 749
 750
 751 bool wxPyCallbackHelper::findCallback(const wxString& name) {
 752     m_lastFound = NULL;
 753     if (m_self && PyObject_HasAttrString(m_self, (char*)name.c_str()))
 754         m_lastFound = PyObject_GetAttrString(m_self, (char*)name.c_str());
 755
 756     return m_lastFound != NULL;
 757 }
 758
 759
 760 int wxPyCallbackHelper::callCallback(PyObject* argTuple) {
 761     PyObject*   result;
 762     int         retval = FALSE;
 763
 764     result = callCallbackObj(argTuple);
 765     if (result) {                       // Assumes an integer return type...
 766         retval = PyInt_AsLong(result);
 767         Py_DECREF(result);
 768         PyErr_Clear();                  // forget about it if it's not...
 769     }
 770 #ifdef WXP_WITH_THREAD
 771     PyEval_SaveThread();
 772 #endif
 773     return retval;
 774 }
 775
 776 // Invoke the Python callable object, returning the raw PyObject return
 777 // value.  Caller should DECREF the return value and also call PyEval_SaveThread.
 778 PyObject* wxPyCallbackHelper::callCallbackObj(PyObject* argTuple) {
 779 #ifdef WXP_WITH_THREAD
 780     PyEval_RestoreThread(wxPyEventThreadState);
 781 #endif
 782     PyObject*   result;
 783
 784     result = PyEval_CallObject(m_lastFound, argTuple);
 785     Py_DECREF(argTuple);
 786     if (!result) {
 787         PyErr_Print();
 788     }
 789     return result;
 790 }
 791
 792
 793
 794
 795 //----------------------------------------------------------------------
 796 //----------------------------------------------------------------------
 797 //----------------------------------------------------------------------
 798
 799
 800