-extern byte* byte_LIST_helper(PyObject* source);
-extern int* int_LIST_helper(PyObject* source);
-extern long* long_LIST_helper(PyObject* source);
-extern char** string_LIST_helper(PyObject* source);
-extern wxPoint* wxPoint_LIST_helper(PyObject* source);
-extern wxBitmap** wxBitmap_LIST_helper(PyObject* source);
-extern wxString* wxString_LIST_helper(PyObject* source);
-extern wxAcceleratorEntry* wxAcceleratorEntry_LIST_helper(PyObject* source);
+HELPEREXPORT byte* byte_LIST_helper(PyObject* source);
+HELPEREXPORT int* int_LIST_helper(PyObject* source);
+HELPEREXPORT long* long_LIST_helper(PyObject* source);
+HELPEREXPORT char** string_LIST_helper(PyObject* source);
+HELPEREXPORT wxPoint* wxPoint_LIST_helper(PyObject* source);
+HELPEREXPORT wxBitmap** wxBitmap_LIST_helper(PyObject* source);
+HELPEREXPORT wxString* wxString_LIST_helper(PyObject* source);
+HELPEREXPORT wxAcceleratorEntry* wxAcceleratorEntry_LIST_helper(PyObject* source);