X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/bb0054cda81e7a6a6e1f33f4b47e46f529110f14..3af4e610b182d2aeb504bdeeef8b44cb1279f28e:/utils/wxPython/src/helpers.cpp

diff --git a/utils/wxPython/src/helpers.cpp b/utils/wxPython/src/helpers.cpp
index d7a86892bc..685a999c25 100644
--- a/utils/wxPython/src/helpers.cpp
+++ b/utils/wxPython/src/helpers.cpp
@@ -10,14 +10,12 @@
 // Licence:     wxWindows license
 /////////////////////////////////////////////////////////////////////////////
 
-
-#ifdef __WXGTK__
-#include "gtk/gtk.h"
-#endif
+#include <stdio.h>  // get the correct definition of NULL
 
 #undef DEBUG
 #include <Python.h>
 #include "helpers.h"
+
 #ifdef __WXMSW__
 #include <wx/msw/private.h>
 #undef FindWindow
@@ -26,7 +24,10 @@
 #undef GetClassInfo
 #undef GetClassName
 #endif
-#include <wx/module.h>
+
+#ifdef __WXGTK__
+#include <gtk/gtk.h>
+#endif
 
 
 //---------------------------------------------------------------------------
@@ -74,40 +75,41 @@ wxPyApp::~wxPyApp() {
 
 // This one isn't acutally called...  See __wxStart()
 bool wxPyApp::OnInit(void) {
-    return false;
+    return FALSE;
 }
 
 int  wxPyApp::MainLoop(void) {
     int retval = wxApp::MainLoop();
-    AfterMainLoop();
+//#    AfterMainLoop();
+    wxPythonApp->OnExit();  //#
     return retval;
 }
 
 
-void wxPyApp::AfterMainLoop(void) {
-    // more stuff from wxEntry...
+//#  void wxPyApp::AfterMainLoop(void) {
+//      // more stuff from wxEntry...
 
-    if (wxPythonApp->GetTopWindow()) {
-        // Forcibly delete the window.
-        if (wxPythonApp->GetTopWindow()->IsKindOf(CLASSINFO(wxFrame)) ||
-            wxPythonApp->GetTopWindow()->IsKindOf(CLASSINFO(wxDialog))) {
+//      if (wxPythonApp->GetTopWindow()) {
+//          // Forcibly delete the window.
+//          if (wxPythonApp->GetTopWindow()->IsKindOf(CLASSINFO(wxFrame)) ||
+//              wxPythonApp->GetTopWindow()->IsKindOf(CLASSINFO(wxDialog))) {
 
-            wxPythonApp->GetTopWindow()->Close(TRUE);
-            wxPythonApp->DeletePendingObjects();
-        }
-        else {
-            delete wxPythonApp->GetTopWindow();
-            wxPythonApp->SetTopWindow(NULL);
-        }
-    }
-#ifdef __WXGTK__
-      wxPythonApp->DeletePendingObjects();
-#endif
+//              wxPythonApp->GetTopWindow()->Close(TRUE);
+//              wxPythonApp->DeletePendingObjects();
+//          }
+//          else {
+//              delete wxPythonApp->GetTopWindow();
+//              wxPythonApp->SetTopWindow(NULL);
+//          }
+//      }
+//  #ifdef __WXGTK__
+//        wxPythonApp->DeletePendingObjects();
+//  #endif
 
-    wxPythonApp->OnExit();
-    wxApp::CleanUp();
-//    delete wxPythonApp;
-}
+//      wxPythonApp->OnExit();
+//      wxApp::CleanUp();
+//  //    delete wxPythonApp;
+//  }
 
 
 //---------------------------------------------------------------------
@@ -117,9 +119,13 @@ void wxPyApp::AfterMainLoop(void) {
 
 // This is where we pick up the first part of the wxEntry functionality...
 // The rest is in __wxStart and  AfterMainLoop.  This function is called when
-// wxpc is imported.  (Before there is a wxApp object.)
+// wxcmodule is imported.  (Before there is a wxApp object.)
 void __wxPreStart()
 {
+#ifdef WXP_WITH_THREAD
+    PyEval_InitThreads();
+#endif
+
     // Bail out if there is already windows created.  This means that the
     // toolkit has already been initialized, as in embedding wxPython in
     // a C++ wxWindows app.
@@ -140,7 +146,13 @@ void __wxPreStart()
     argv[argc] = NULL;
 
     gtk_set_locale();
+#if wxUSE_WCHAR_T
+    if (!wxOKlibc()) wxConvCurrent = &wxConvLocal;
+#else
+    if (!wxOKlibc()) wxConvCurrent = (wxMBConv*) NULL;
+#endif
     gtk_init( &argc, &argv );
+    wxSetDetectableAutoRepeat( TRUE );
     delete [] argv;
 
     wxApp::Initialize();     // may return FALSE. Should we check?
@@ -151,10 +163,11 @@ void __wxPreStart()
 
 #ifdef WXP_WITH_THREAD
 PyThreadState*  wxPyEventThreadState = NULL;
-bool            wxPyInEvent = false;
 #endif
 static char* __nullArgv[1] = { 0 };
 
+
+
 // Start the user application, user App's OnInit method is a parameter here
 PyObject* __wxStart(PyObject* /* self */, PyObject* args)
 {
@@ -184,15 +197,9 @@ PyObject* __wxStart(PyObject* /* self */, PyObject* args)
 
     // Call the Python App's OnInit function
     arglist = PyTuple_New(0);
-
-    // Py_END_ALLOW_THREADS;  ****  __wxStart was called from Python,
-    //                              should already have the lock
     result = PyEval_CallObject(onInitFunc, arglist);
-    // Py_BEGIN_ALLOW_THREADS;
-
-    if (!result) {
-        PyErr_Print();
-        exit(1);
+    if (!result) {      // an exception was raised.
+        return NULL;
     }
 
     if (! PyInt_Check(result)) {
@@ -201,10 +208,7 @@ PyObject* __wxStart(PyObject* /* self */, PyObject* args)
     }
     bResult = PyInt_AS_LONG(result);
     if (! bResult) {
-        wxPythonApp->DeletePendingObjects();
-        wxPythonApp->OnExit();
-        wxApp::CleanUp();
-        PyErr_SetString(PyExc_SystemExit, "OnInit returned false, exiting...");
+        PyErr_SetString(PyExc_SystemExit, "OnInit returned FALSE, exiting...");
         return NULL;
     }
 
@@ -256,10 +260,7 @@ PyObject* __wxSetDictionary(PyObject* /* self */, PyObject* args)
 
 //---------------------------------------------------------------------------
 
-
-static
-PyObject* wxPyConstructObject(void* ptr, char* className)
-{
+PyObject* wxPyConstructObject(void* ptr, const char* className) {
     char    buff[64];               // should always be big enough...
     char    swigptr[64];
 
@@ -280,27 +281,67 @@ PyObject* wxPyConstructObject(void* ptr, char* className)
     return obj;
 }
 
+//---------------------------------------------------------------------------
 
+static unsigned int _wxPyNestCount = 0;
 
-wxPyCallback::wxPyCallback(PyObject* func) {
-    m_func = func;
-    Py_INCREF(m_func);
+static PyThreadState* myPyThreadState_Get() {
+    PyThreadState* current;
+    current = PyThreadState_Swap(NULL);
+    PyThreadState_Swap(current);
+    return current;
 }
 
-wxPyCallback::~wxPyCallback() {
+
+HELPEREXPORT bool wxPyRestoreThread() {
+    // NOTE: The Python API docs state that if a thread already has the
+    // interpreter lock and calls PyEval_RestoreThread again a deadlock
+    // occurs, so I put in this code as a guard condition since there are
+    // many possibilites for nested events and callbacks in wxPython.  If
+    // The current thread is our thread, then we can assume that we
+    // already have the lock.  (I hope!)
+    //
 #ifdef WXP_WITH_THREAD
-    //if (! wxPyInEvent)
+    _wxPyNestCount += 1;
+    if (wxPyEventThreadState != myPyThreadState_Get()) {
         PyEval_RestoreThread(wxPyEventThreadState);
+        return TRUE;
+    }
+    else
 #endif
+        return FALSE;
+}
 
-    Py_DECREF(m_func);
 
+HELPEREXPORT void wxPySaveThread(bool doSave) {
 #ifdef WXP_WITH_THREAD
-    //if (! wxPyInEvent)
-        PyEval_SaveThread();
+    if (doSave) {
+        wxPyEventThreadState = PyEval_SaveThread();
+    }
+    _wxPyNestCount -= 1;
 #endif
 }
 
+//---------------------------------------------------------------------------
+
+
+IMPLEMENT_ABSTRACT_CLASS(wxPyCallback, wxObject);
+
+wxPyCallback::wxPyCallback(PyObject* func) {
+    m_func = func;
+    Py_INCREF(m_func);
+}
+
+wxPyCallback::wxPyCallback(const wxPyCallback& other) {
+    m_func = other.m_func;
+    Py_INCREF(m_func);
+}
+
+wxPyCallback::~wxPyCallback() {
+    bool doSave = wxPyRestoreThread();
+    Py_DECREF(m_func);
+    wxPySaveThread(doSave);
+}
 
 
 
@@ -313,11 +354,15 @@ void wxPyCallback::EventThunker(wxEvent& event) {
     PyObject*       tuple;
 
 
-#ifdef WXP_WITH_THREAD
-    PyEval_RestoreThread(wxPyEventThreadState);
-    wxPyInEvent = true;
-#endif
-    arg = wxPyConstructObject((void*)&event, event.GetClassInfo()->GetClassName());
+    bool doSave = wxPyRestoreThread();
+    wxString className = event.GetClassInfo()->GetClassName();
+
+    if (className == "wxPyEvent")
+        arg = ((wxPyEvent*)&event)->GetSelf();
+    else if (className == "wxPyCommandEvent")
+        arg = ((wxPyCommandEvent*)&event)->GetSelf();
+    else
+        arg = wxPyConstructObject((void*)&event, className);
 
     tuple = PyTuple_New(1);
     PyTuple_SET_ITEM(tuple, 0, arg);
@@ -329,75 +374,154 @@ void wxPyCallback::EventThunker(wxEvent& event) {
     } else {
         PyErr_Print();
     }
-#ifdef WXP_WITH_THREAD
-    PyEval_SaveThread();
-    wxPyInEvent = false;
-#endif
+    wxPySaveThread(doSave);
+}
+
+
+//----------------------------------------------------------------------
+
+wxPyCallbackHelper::wxPyCallbackHelper() {
+    m_self = NULL;
+    m_lastFound = NULL;
+    m_incRef = FALSE;
+}
+
+
+wxPyCallbackHelper::~wxPyCallbackHelper() {
+    bool doSave = wxPyRestoreThread();
+    if (m_incRef)
+        Py_XDECREF(m_self);
+    wxPySaveThread(doSave);
+}
+
+wxPyCallbackHelper::wxPyCallbackHelper(const wxPyCallbackHelper& other) {
+      m_lastFound = NULL;
+      m_self = other.m_self;
+      if (m_self)
+          Py_INCREF(m_self);
+}
+
+
+void wxPyCallbackHelper::setSelf(PyObject* self, int incref) {
+    m_self = self;
+    m_incRef = incref;
+    if (incref)
+        Py_INCREF(m_self);
 }
 
 
+bool wxPyCallbackHelper::findCallback(const wxString& name) {
+    m_lastFound = NULL;
+    if (m_self && PyObject_HasAttrString(m_self, (char*)name.c_str()))
+        m_lastFound = PyObject_GetAttrString(m_self, (char*)name.c_str());
+
+    return m_lastFound != NULL;
+}
+
+
+int wxPyCallbackHelper::callCallback(PyObject* argTuple) {
+    PyObject*   result;
+    int         retval = FALSE;
+
+    result = callCallbackObj(argTuple);
+    if (result) {                       // Assumes an integer return type...
+        retval = PyInt_AsLong(result);
+        Py_DECREF(result);
+        PyErr_Clear();                  // forget about it if it's not...
+    }
+    return retval;
+}
+
+// Invoke the Python callable object, returning the raw PyObject return
+// value.  Caller should DECREF the return value and also call PyEval_SaveThread.
+PyObject* wxPyCallbackHelper::callCallbackObj(PyObject* argTuple) {
+    PyObject*   result;
+
+    result = PyEval_CallObject(m_lastFound, argTuple);
+    Py_DECREF(argTuple);
+    if (!result) {
+        PyErr_Print();
+    }
+    return result;
+}
+
+
+
+//---------------------------------------------------------------------------
 //---------------------------------------------------------------------------
+// These classes can be derived from in Python and passed through the event
+// system without loosing anything.  They do this by keeping a reference to
+// themselves and some special case handling in wxPyCallback::EventThunker.
 
-wxPyMenu::wxPyMenu(const wxString& title, PyObject* _func)
-    : wxMenu(title, (wxFunction)(func ? MenuCallback : NULL)), func(0) {
 
-    if (_func) {
-        func = _func;
-        Py_INCREF(func);
+wxPyEvtSelfRef::wxPyEvtSelfRef() {
+    //m_self = Py_None;         // **** We don't do normal ref counting to prevent
+    //Py_INCREF(m_self);        //      circular loops...
+    m_cloned = FALSE;
+}
+
+wxPyEvtSelfRef::~wxPyEvtSelfRef() {
+    bool doSave = wxPyRestoreThread();
+    if (m_cloned)
+        Py_DECREF(m_self);
+    wxPySaveThread(doSave);
+}
+
+void wxPyEvtSelfRef::SetSelf(PyObject* self, bool clone) {
+    bool doSave = wxPyRestoreThread();
+    if (m_cloned)
+        Py_DECREF(m_self);
+    m_self = self;
+    if (clone) {
+        Py_INCREF(m_self);
+        m_cloned = TRUE;
     }
+    wxPySaveThread(doSave);
 }
 
-wxPyMenu::~wxPyMenu() {
-#ifdef WXP_WITH_THREAD
-    //if (! wxPyInEvent)
-        PyEval_RestoreThread(wxPyEventThreadState);
-#endif
+PyObject* wxPyEvtSelfRef::GetSelf() const {
+    Py_INCREF(m_self);
+    return m_self;
+}
 
-    if (func)
-        Py_DECREF(func);
 
-#ifdef WXP_WITH_THREAD
-    //if (! wxPyInEvent)
-        PyEval_SaveThread();
-#endif
+wxPyEvent::wxPyEvent(int id)
+    : wxEvent(id) {
 }
 
+wxPyEvent::~wxPyEvent() {
+}
 
-void wxPyMenu::MenuCallback(wxMenu& menu, wxCommandEvent& evt) {
-    PyObject* evtobj;
-    PyObject* menuobj;
-    PyObject* func;
-    PyObject* args;
-    PyObject* res;
+// This one is so the event object can be Cloned...
+void wxPyEvent::CopyObject(wxObject& dest) const {
+    wxEvent::CopyObject(dest);
+    ((wxPyEvent*)&dest)->SetSelf(m_self, TRUE);
+}
 
-#ifdef WXP_WITH_THREAD
-    PyEval_RestoreThread(wxPyEventThreadState);
-    wxPyInEvent = true;
-#endif
-    evtobj  = wxPyConstructObject((void*)&evt, "wxCommandEvent");
-    menuobj = wxPyConstructObject((void*)&menu, "wxMenu");
-    if (PyErr_Occurred()) {
-        // bail out if a problem
-        PyErr_Print();
-        goto done;
-    }
-    // Now call the callback...
-    func = ((wxPyMenu*)&menu)->func;
-    args = PyTuple_New(2);
-    PyTuple_SET_ITEM(args, 0, menuobj);
-    PyTuple_SET_ITEM(args, 1, evtobj);
-    res  = PyEval_CallObject(func, args);
-    Py_DECREF(args);
-    Py_XDECREF(res); /* In case res is a NULL pointer */
- done:
-#ifdef WXP_WITH_THREAD
-    PyEval_SaveThread();
-    wxPyInEvent = false;
-#endif
+
+IMPLEMENT_DYNAMIC_CLASS(wxPyEvent, wxEvent);
+
+
+wxPyCommandEvent::wxPyCommandEvent(wxEventType commandType, int id)
+    : wxCommandEvent(commandType, id) {
 }
 
+wxPyCommandEvent::~wxPyCommandEvent() {
+}
+
+void wxPyCommandEvent::CopyObject(wxObject& dest) const {
+    wxCommandEvent::CopyObject(dest);
+    ((wxPyCommandEvent*)&dest)->SetSelf(m_self, TRUE);
+}
+
+
+IMPLEMENT_DYNAMIC_CLASS(wxPyCommandEvent, wxCommandEvent);
+
+
 
 //---------------------------------------------------------------------------
+//---------------------------------------------------------------------------
+
 
 wxPyTimer::wxPyTimer(PyObject* callback) {
     func = callback;
@@ -405,24 +529,14 @@ wxPyTimer::wxPyTimer(PyObject* callback) {
 }
 
 wxPyTimer::~wxPyTimer() {
-#ifdef WXP_WITH_THREAD
-    //if (! wxPyInEvent)
-        PyEval_RestoreThread(wxPyEventThreadState);
-#endif
-
+    bool doSave = wxPyRestoreThread();
     Py_DECREF(func);
-
-#ifdef WXP_WITH_THREAD
-    //if (! wxPyInEvent)
-        PyEval_SaveThread();
-#endif
+    wxPySaveThread(doSave);
 }
 
 void wxPyTimer::Notify() {
-#ifdef WXP_WITH_THREAD
-    PyEval_RestoreThread(wxPyEventThreadState);
-    wxPyInEvent = true;
-#endif
+    bool doSave = wxPyRestoreThread();
+
     PyObject*   result;
     PyObject*   args = Py_BuildValue("()");
 
@@ -434,63 +548,36 @@ void wxPyTimer::Notify() {
     } else {
         PyErr_Print();
     }
-#ifdef WXP_WITH_THREAD
-    PyEval_SaveThread();
-    wxPyInEvent = false;
-#endif
+    wxPySaveThread(doSave);
 }
 
 
-//----------------------------------------------------------------------
-
-IMPLEMENT_DYNAMIC_CLASS(wxPyEvent, wxCommandEvent)
 
-wxPyEvent::wxPyEvent(wxEventType commandType, PyObject* userData)
-    : wxCommandEvent(commandType), m_userData(Py_None)
-{
-    m_userData = userData;
-    if (m_userData != Py_None) {
-        Py_INCREF(m_userData);
-    }
-}
-
-
-wxPyEvent::~wxPyEvent() {
-#ifdef WXP_WITH_THREAD
-    //if (! wxPyInEvent)
-        PyEval_RestoreThread(wxPyEventThreadState);
-#endif
-    if (m_userData != Py_None) {
-        Py_DECREF(m_userData);
-        m_userData = Py_None;
-    }
-#ifdef WXP_WITH_THREAD
-    //if (! wxPyInEvent)
-        PyEval_SaveThread();
-#endif
-}
+//---------------------------------------------------------------------------
+//---------------------------------------------------------------------------
+// Convert a wxList to a Python List
 
+PyObject* wxPy_ConvertList(wxListBase* list, const char* className) {
+    PyObject*   pyList;
+    PyObject*   pyObj;
+    wxObject*   wxObj;
+    wxNode*     node = list->First();
 
-void wxPyEvent::SetUserData(PyObject* userData) {
-    if (m_userData != Py_None) {
-        Py_DECREF(m_userData);
-        m_userData = Py_None;
-    }
-    m_userData = userData;
-    if (m_userData != Py_None) {
-        Py_INCREF(m_userData);
+    bool doSave = wxPyRestoreThread();
+    pyList = PyList_New(0);
+    while (node) {
+        wxObj = node->Data();
+        pyObj = wxPyConstructObject(wxObj, className);
+        PyList_Append(pyList, pyObj);
+        node = node->Next();
     }
+    wxPySaveThread(doSave);
+    return pyList;
 }
 
-
-PyObject* wxPyEvent::GetUserData() {
-    return m_userData;
-}
-
-//----------------------------------------------------------------------
 //----------------------------------------------------------------------
 // Some helper functions for typemaps in my_typemaps.i, so they won't be
-// imcluded in every file...
+// included in every file...
 
 
 byte* byte_LIST_helper(PyObject* source) {
@@ -599,22 +686,21 @@ wxPoint* wxPoint_LIST_helper(PyObject* source) {
     }
     for (int x=0; x<count; x++) {
         PyObject* o = PyList_GetItem(source, x);
-        if (PyString_Check(o)) {
-            char*       st = PyString_AsString(o);
-            wxPoint*    pt;
-            if (SWIG_GetPtr(st,(void **) &pt,"_wxPoint_p")) {
-                PyErr_SetString(PyExc_TypeError,"Expected _wxPoint_p.");
-                return NULL;
-            }
-            temp[x] = *pt;
-        }
-        else if (PyTuple_Check(o)) {
+        if (PyTuple_Check(o)) {
             PyObject* o1 = PyTuple_GetItem(o, 0);
             PyObject* o2 = PyTuple_GetItem(o, 1);
 
             temp[x].x = PyInt_AsLong(o1);
             temp[x].y = PyInt_AsLong(o2);
         }
+        else if (PyInstance_Check(o)) {
+            wxPoint* pt;
+            if (SWIG_GetPtrObj(o,(void **) &pt,"_wxPoint_p")) {
+                PyErr_SetString(PyExc_TypeError,"Expected _wxPoint_p.");
+                return NULL;
+            }
+            temp[x] = *pt;
+        }
         else {
             PyErr_SetString(PyExc_TypeError, "Expected a list of 2-tuples or wxPoints.");
             return NULL;
@@ -637,10 +723,9 @@ wxBitmap** wxBitmap_LIST_helper(PyObject* source) {
     }
     for (int x=0; x<count; x++) {
         PyObject* o = PyList_GetItem(source, x);
-        if (PyString_Check(o)) {
-            char*       st = PyString_AsString(o);
+        if (PyInstance_Check(o)) {
             wxBitmap*    pt;
-            if (SWIG_GetPtr(st,(void **) &pt,"_wxBitmap_p")) {
+            if (SWIG_GetPtrObj(o, (void **) &pt,"_wxBitmap_p")) {
                 PyErr_SetString(PyExc_TypeError,"Expected _wxBitmap_p.");
                 return NULL;
             }
@@ -692,10 +777,9 @@ wxAcceleratorEntry* wxAcceleratorEntry_LIST_helper(PyObject* source) {
     }
     for (int x=0; x<count; x++) {
         PyObject* o = PyList_GetItem(source, x);
-        if (PyString_Check(o)) {
-            char*               st = PyString_AsString(o);
+        if (PyInstance_Check(o)) {
             wxAcceleratorEntry* ae;
-            if (SWIG_GetPtr(st,(void **) &ae,"_wxAcceleratorEntry_p")) {
+            if (SWIG_GetPtrObj(o, (void **) &ae,"_wxAcceleratorEntry_p")) {
                 PyErr_SetString(PyExc_TypeError,"Expected _wxAcceleratorEntry_p.");
                 return NULL;
             }
@@ -720,75 +804,107 @@ wxAcceleratorEntry* wxAcceleratorEntry_LIST_helper(PyObject* source) {
 
 
 
-//----------------------------------------------------------------------
 //----------------------------------------------------------------------
 
-wxPyCallbackHelper::wxPyCallbackHelper() {
-    m_self = NULL;
-    m_lastFound = NULL;
-}
+bool wxSize_helper(PyObject* source, wxSize** obj) {
 
+    // If source is an object instance then it may already be the right type
+    if (PyInstance_Check(source)) {
+        wxSize* ptr;
+        if (SWIG_GetPtrObj(source, (void **)&ptr, "_wxSize_p"))
+            goto error;
+        *obj = ptr;
+        return TRUE;
+    }
+    // otherwise a 2-tuple of integers is expected
+    else if (PySequence_Check(source) && PyObject_Length(source) == 2) {
+        PyObject* o1 = PySequence_GetItem(source, 0);
+        PyObject* o2 = PySequence_GetItem(source, 1);
+        **obj = wxSize(PyInt_AsLong(o1), PyInt_AsLong(o2));
+        return TRUE;
+    }
 
-wxPyCallbackHelper::~wxPyCallbackHelper() {
-#ifdef WXP_WITH_THREAD
-    PyEval_RestoreThread(wxPyEventThreadState);
-#endif
+ error:
+    PyErr_SetString(PyExc_TypeError, "Expected a 2-tuple of integers or a wxSize object.");
+    return FALSE;
+}
 
-    Py_XDECREF(m_self);
+bool wxPoint_helper(PyObject* source, wxPoint** obj) {
 
-#ifdef WXP_WITH_THREAD
-    PyEval_SaveThread();
-#endif
-}
+    // If source is an object instance then it may already be the right type
+    if (PyInstance_Check(source)) {
+        wxPoint* ptr;
+        if (SWIG_GetPtrObj(source, (void **)&ptr, "_wxPoint_p"))
+            goto error;
+        *obj = ptr;
+        return TRUE;
+    }
+    // otherwise a 2-tuple of integers is expected
+    else if (PySequence_Check(source) && PyObject_Length(source) == 2) {
+        PyObject* o1 = PySequence_GetItem(source, 0);
+        PyObject* o2 = PySequence_GetItem(source, 1);
+        **obj = wxPoint(PyInt_AsLong(o1), PyInt_AsLong(o2));
+        return TRUE;
+    }
 
-void wxPyCallbackHelper::setSelf(PyObject* self) {
-    m_self = self;
-    Py_INCREF(m_self);
+ error:
+    PyErr_SetString(PyExc_TypeError, "Expected a 2-tuple of integers or a wxPoint object.");
+    return FALSE;
 }
 
 
 
-bool wxPyCallbackHelper::findCallback(const wxString& name) {
-    m_lastFound = NULL;
-    if (m_self && PyObject_HasAttrString(m_self, (char*)name.c_str()))
-        m_lastFound = PyObject_GetAttrString(m_self, (char*)name.c_str());
+bool wxRealPoint_helper(PyObject* source, wxRealPoint** obj) {
 
-    return m_lastFound != NULL;
+    // If source is an object instance then it may already be the right type
+    if (PyInstance_Check(source)) {
+        wxRealPoint* ptr;
+        if (SWIG_GetPtrObj(source, (void **)&ptr, "_wxRealPoint_p"))
+            goto error;
+        *obj = ptr;
+        return TRUE;
+    }
+    // otherwise a 2-tuple of floats is expected
+    else if (PySequence_Check(source) && PyObject_Length(source) == 2) {
+        PyObject* o1 = PySequence_GetItem(source, 0);
+        PyObject* o2 = PySequence_GetItem(source, 1);
+        **obj = wxRealPoint(PyFloat_AsDouble(o1), PyFloat_AsDouble(o2));
+        return TRUE;
+    }
+
+ error:
+    PyErr_SetString(PyExc_TypeError, "Expected a 2-tuple of floats or a wxRealPoint object.");
+    return FALSE;
 }
 
 
-int wxPyCallbackHelper::callCallback(PyObject* argTuple) {
-    PyObject*   result;
-    int         retval = FALSE;
 
-    result = callCallbackObj(argTuple);
-    if (result) {                       // Assumes an integer return type...
-        retval = PyInt_AsLong(result);
-        Py_DECREF(result);
-        PyErr_Clear();                  // forget about it if it's not...
-    }
-#ifdef WXP_WITH_THREAD
-    PyEval_SaveThread();
-#endif
-    return retval;
-}
 
-// Invoke the Python callable object, returning the raw PyObject return
-// value.  Caller should DECREF the return value and also call PyEval_SaveThread.
-PyObject* wxPyCallbackHelper::callCallbackObj(PyObject* argTuple) {
-#ifdef WXP_WITH_THREAD
-    PyEval_RestoreThread(wxPyEventThreadState);
-#endif
-    PyObject*   result;
+bool wxRect_helper(PyObject* source, wxRect** obj) {
 
-    result = PyEval_CallObject(m_lastFound, argTuple);
-    Py_DECREF(argTuple);
-    if (!result) {
-        PyErr_Print();
+    // If source is an object instance then it may already be the right type
+    if (PyInstance_Check(source)) {
+        wxRect* ptr;
+        if (SWIG_GetPtrObj(source, (void **)&ptr, "_wxRect_p"))
+            goto error;
+        *obj = ptr;
+        return TRUE;
+    }
+    // otherwise a 4-tuple of integers is expected
+    else if (PySequence_Check(source) && PyObject_Length(source) == 4) {
+        PyObject* o1 = PySequence_GetItem(source, 0);
+        PyObject* o2 = PySequence_GetItem(source, 1);
+        PyObject* o3 = PySequence_GetItem(source, 2);
+        PyObject* o4 = PySequence_GetItem(source, 3);
+        **obj = wxRect(PyInt_AsLong(o1), PyInt_AsLong(o2),
+                     PyInt_AsLong(o3), PyInt_AsLong(o4));
+        return TRUE;
     }
-    return result;
-}
 
+ error:
+    PyErr_SetString(PyExc_TypeError, "Expected a 4-tuple of integers or a wxRect object.");
+    return FALSE;
+}