+//----------------------------------------------------------------------
+
+// if we want to handle threads and Python threads are available...
+#if defined(WXP_USE_THREAD) && defined(WITH_THREAD)
+
+#define WXP_WITH_THREAD
+#define wxPy_BEGIN_ALLOW_THREADS Py_BEGIN_ALLOW_THREADS
+#define wxPy_END_ALLOW_THREADS Py_END_ALLOW_THREADS
+
+#else // no Python threads...
+#undef WXP_WITH_THREAD
+#define wxPy_BEGIN_ALLOW_THREADS
+#define wxPy_END_ALLOW_THREADS
+#endif
+
+