Index: setup.py
===================================================================
--- setup.py	(revision 81023)
+++ setup.py	(working copy)
@@ -1539,7 +1539,8 @@
             frameworks.append('-arch')
             frameworks.append(a)
 
-        ext = Extension('_tkinter', ['_tkinter.c', 'tkappinit.c'],
+
+        ext = Extension('_tkinter', ['_tkinter.m', 'tkappinit.c'],
                         define_macros=[('WITH_APPINIT', 1)],
                         include_dirs = include_dirs,
                         libraries = [],
Index: Modules/_tkinter.c
===================================================================
--- Modules/_tkinter.c	(revision 81023)
+++ Modules/_tkinter.c	(working copy)
@@ -33,6 +33,12 @@
 #include <windows.h>
 #endif
 
+#ifdef __APPLE__
+#define Cursor FndCursor
+#import <Foundation/Foundation.h>
+#undef Cursor
+#endif
+
 /* Allow using this code in Python 2.[12] */
 #ifndef PyDoc_STRVAR
 #define PyDoc_STRVAR(name,str) static char name[] = str
@@ -3100,6 +3106,10 @@
 static int
 EventHook(void)
 {
+#ifdef __APPLE__
+	int  errorInTk = 0;
+#endif
+
 #ifndef MS_WINDOWS
 	int tfile;
 #endif
@@ -3125,7 +3135,16 @@
 		if(tcl_lock)PyThread_acquire_lock(tcl_lock, 1);
 		tcl_tstate = event_tstate;
 
+#ifdef __APPLE__
+		NS_DURING
+#endif
 		result = Tcl_DoOneEvent(TCL_DONT_WAIT);
+#ifdef __APPLE__
+		NS_HANDLER
+			result = -1;
+			errorInTk = 1;
+		NS_ENDHANDLER
+#endif
 
 		tcl_tstate = NULL;
 		if(tcl_lock)PyThread_release_lock(tcl_lock);
@@ -3142,6 +3161,11 @@
 #ifndef MS_WINDOWS
 	Tcl_DeleteFileHandler(tfile);
 #endif
+#ifdef __APPLE__
+	if (errorInTk) {
+		PySys_WriteStderr("Unexpected Objective-C exception in Tk\n");
+	}
+#endif
 	if (errorInCmd) {
 		errorInCmd = 0;
 		PyErr_Restore(excInCmd, valInCmd, trbInCmd);
Index: Modules/_tkinter.m
===================================================================
--- Modules/_tkinter.m	(revision 0)
+++ Modules/_tkinter.m	(revision 0)
@@ -0,0 +1 @@
+#include "_tkinter.c"