MCL/sf/adapt/qemu: comparison symbian-qemu-0.9.1-12/python-2.6.1/Modules/

equal deleted inserted replaced

-:ffa851df0825
+:2fb8b9db1c86
+/***********************************************************
+Copyright (C) 1994 Steen Lumholt.
+All Rights Reserved
+******************************************************************/
+/* _tkinter.c -- Interface to libtk.a and libtcl.a. */
+/* TCL/TK VERSION INFO:
+	Only Tcl/Tk 8.2 and later are supported.  Older versions are not
+	supported.  (Use Python 2.2 if you cannot upgrade your Tcl/Tk
+	libraries.)
+*/
+/* XXX Further speed-up ideas, involving Tcl 8.0 features:
+- Register a new Tcl type, "Python callable", which can be called more
+efficiently and passed to Tcl_EvalObj() directly (if this is possible).
+*/
+#include "Python.h"
+#include <ctype.h>
+#ifdef WITH_THREAD
+#include "pythread.h"
+#endif
+#ifdef MS_WINDOWS
+#include <windows.h>
+#endif
+/* Allow using this code in Python 2.[12] */
+#ifndef PyDoc_STRVAR
+#define PyDoc_STRVAR(name,str) static char name[] = str
+#endif
+#ifndef PyMODINIT_FUNC
+#define PyMODINIT_FUNC void
+#endif
+#ifndef PyBool_Check
+#define PyBool_Check(o)       0
+#define PyBool_FromLong       PyInt_FromLong
+#endif
+/* Starting with Tcl 8.4, many APIs offer const-correctness.  Unfortunately,
+making _tkinter correct for this API means to break earlier
+versions. USE_COMPAT_CONST allows to make _tkinter work with both 8.4 and
+earlier versions. Once Tcl releases before 8.4 don't need to be supported
+anymore, this should go. */
+#define USE_COMPAT_CONST
+/* If Tcl is compiled for threads, we must also define TCL_THREAD. We define
+it always; if Tcl is not threaded, the thread functions in
+Tcl are empty.  */
+#define TCL_THREADS
+#ifdef TK_FRAMEWORK
+#include <Tcl/tcl.h>
+#include <Tk/tk.h>
+#else
+#include <tcl.h>
+#include <tk.h>
+#endif
+/* For Tcl 8.2 and 8.3, CONST* is not defined (except on Cygwin). */
+#ifndef CONST84_RETURN
+#define CONST84_RETURN
+#undef CONST
+#define CONST
+#endif
+#define TKMAJORMINOR (TK_MAJOR_VERSION*1000 + TK_MINOR_VERSION)
+#if TKMAJORMINOR < 8002
+#error "Tk older than 8.2 not supported"
+#endif
+/* Unicode conversion assumes that Tcl_UniChar is two bytes.
+We cannot test this directly, so we test UTF-8 size instead,
+expecting that TCL_UTF_MAX is changed if Tcl ever supports
+either UTF-16 or UCS-4.
+Redhat 8 sets TCL_UTF_MAX to 6, and uses wchar_t for
+Tcl_Unichar. This is also ok as long as Python uses UCS-4,
+as well.
+*/
+#if TCL_UTF_MAX != 3 && !(defined(Py_UNICODE_WIDE) && TCL_UTF_MAX==6)
+#error "unsupported Tcl configuration"
+#endif
+#if !(defined(MS_WINDOWS) || defined(__CYGWIN__))
+#define HAVE_CREATEFILEHANDLER
+#endif
+#ifdef HAVE_CREATEFILEHANDLER
+/* This bit is to ensure that TCL_UNIX_FD is defined and doesn't interfere
+with the proper calculation of FHANDLETYPE == TCL_UNIX_FD below. */
+#ifndef TCL_UNIX_FD
+#  ifdef TCL_WIN_SOCKET
+#    define TCL_UNIX_FD (! TCL_WIN_SOCKET)
+#  else
+#    define TCL_UNIX_FD 1
+#  endif
+#endif
+/* Tcl_CreateFileHandler() changed several times; these macros deal with the
+messiness.  In Tcl 8.0 and later, it is not available on Windows (and on
+Unix, only because Jack added it back); when available on Windows, it only
+applies to sockets. */
+#ifdef MS_WINDOWS
+#define FHANDLETYPE TCL_WIN_SOCKET
+#else
+#define FHANDLETYPE TCL_UNIX_FD
+#endif
+/* If Tcl can wait for a Unix file descriptor, define the EventHook() routine
+which uses this to handle Tcl events while the user is typing commands. */
+#if FHANDLETYPE == TCL_UNIX_FD
+#define WAIT_FOR_STDIN
+#endif
+#endif /* HAVE_CREATEFILEHANDLER */
+#ifdef MS_WINDOWS
+#include <conio.h>
+#define WAIT_FOR_STDIN
+#endif
+#ifdef WITH_THREAD
+/* The threading situation is complicated.  Tcl is not thread-safe, except
+when configured with --enable-threads.
+So we need to use a lock around all uses of Tcl.  Previously, the Python
+interpreter lock was used for this.  However, this causes problems when
+other Python threads need to run while Tcl is blocked waiting for events.
+To solve this problem, a separate lock for Tcl is introduced.  Holding it
+is incompatible with holding Python's interpreter lock.  The following four
+macros manipulate both locks together.
+ENTER_TCL and LEAVE_TCL are brackets, just like Py_BEGIN_ALLOW_THREADS and
+Py_END_ALLOW_THREADS.  They should be used whenever a call into Tcl is made
+that could call an event handler, or otherwise affect the state of a Tcl
+interpreter.  These assume that the surrounding code has the Python
+interpreter lock; inside the brackets, the Python interpreter lock has been
+released and the lock for Tcl has been acquired.
+Sometimes, it is necessary to have both the Python lock and the Tcl lock.
+(For example, when transferring data from the Tcl interpreter result to a
+Python string object.)  This can be done by using different macros to close
+the ENTER_TCL block: ENTER_OVERLAP reacquires the Python lock (and restores
+the thread state) but doesn't release the Tcl lock; LEAVE_OVERLAP_TCL
+releases the Tcl lock.
+By contrast, ENTER_PYTHON and LEAVE_PYTHON are used in Tcl event
+handlers when the handler needs to use Python.  Such event handlers are
+entered while the lock for Tcl is held; the event handler presumably needs
+to use Python.  ENTER_PYTHON releases the lock for Tcl and acquires
+the Python interpreter lock, restoring the appropriate thread state, and
+LEAVE_PYTHON releases the Python interpreter lock and re-acquires the lock
+for Tcl.  It is okay for ENTER_TCL/LEAVE_TCL pairs to be contained inside
+the code between ENTER_PYTHON and LEAVE_PYTHON.
+These locks expand to several statements and brackets; they should not be
+used in branches of if statements and the like.
+If Tcl is threaded, this approach won't work anymore. The Tcl interpreter is
+only valid in the thread that created it, and all Tk activity must happen in this
+thread, also. That means that the mainloop must be invoked in the thread that
+created the interpreter. Invoking commands from other threads is possible;
+_tkinter will queue an event for the interpreter thread, which will then
+execute the command and pass back the result. If the main thread is not in the
+mainloop, and invoking commands causes an exception; if the main loop is running
+but not processing events, the command invocation will block.
+In addition, for a threaded Tcl, a single global tcl_tstate won't be sufficient
+anymore, since multiple Tcl interpreters may simultaneously dispatch in different
+threads. So we use the Tcl TLS API.
+*/
+static PyThread_type_lock tcl_lock = 0;
+#ifdef TCL_THREADS
+static Tcl_ThreadDataKey state_key;
+typedef PyThreadState *ThreadSpecificData;
+#define tcl_tstate (*(PyThreadState**)Tcl_GetThreadData(&state_key, sizeof(PyThreadState*)))
+#else
+static PyThreadState *tcl_tstate = NULL;
+#endif
+#define ENTER_TCL \
+	{ PyThreadState *tstate = PyThreadState_Get(); Py_BEGIN_ALLOW_THREADS \
+	    if(tcl_lock)PyThread_acquire_lock(tcl_lock, 1); tcl_tstate = tstate;
+#define LEAVE_TCL \
+tcl_tstate = NULL; if(tcl_lock)PyThread_release_lock(tcl_lock); Py_END_ALLOW_THREADS}
+#define ENTER_OVERLAP \
+	Py_END_ALLOW_THREADS
+#define LEAVE_OVERLAP_TCL \
+	tcl_tstate = NULL; if(tcl_lock)PyThread_release_lock(tcl_lock); }
+#define ENTER_PYTHON \
+	{ PyThreadState *tstate = tcl_tstate; tcl_tstate = NULL; \
+	    if(tcl_lock)PyThread_release_lock(tcl_lock); PyEval_RestoreThread((tstate)); }
+#define LEAVE_PYTHON \
+	{ PyThreadState *tstate = PyEval_SaveThread(); \
+	    if(tcl_lock)PyThread_acquire_lock(tcl_lock, 1); tcl_tstate = tstate; }
+#define CHECK_TCL_APPARTMENT \
+	if (((TkappObject *)self)->threaded && \
+	    ((TkappObject *)self)->thread_id != Tcl_GetCurrentThread()) { \
+		PyErr_SetString(PyExc_RuntimeError, "Calling Tcl from different appartment"); \
+		return 0; \
+	}
+#else
+#define ENTER_TCL
+#define LEAVE_TCL
+#define ENTER_OVERLAP
+#define LEAVE_OVERLAP_TCL
+#define ENTER_PYTHON
+#define LEAVE_PYTHON
+#define CHECK_TCL_APPARTMENT
+#endif
+#ifndef FREECAST
+#define FREECAST (char *)
+#endif
+/**** Tkapp Object Declaration ****/
+static PyTypeObject Tkapp_Type;
+typedef struct {
+	PyObject_HEAD
+	Tcl_Interp *interp;
+	int wantobjects;
+	int threaded; /* True if tcl_platform[threaded] */
+	Tcl_ThreadId thread_id;
+	int dispatching;
+	/* We cannot include tclInt.h, as this is internal.
+	   So we cache interesting types here. */
+	Tcl_ObjType *BooleanType;
+	Tcl_ObjType *ByteArrayType;
+	Tcl_ObjType *DoubleType;
+	Tcl_ObjType *IntType;
+	Tcl_ObjType *ListType;
+	Tcl_ObjType *ProcBodyType;
+	Tcl_ObjType *StringType;
+} TkappObject;
+#define Tkapp_Check(v) (Py_TYPE(v) == &Tkapp_Type)
+#define Tkapp_Interp(v) (((TkappObject *) (v))->interp)
+#define Tkapp_Result(v) Tcl_GetStringResult(Tkapp_Interp(v))
+#define DEBUG_REFCNT(v) (printf("DEBUG: id=%p, refcnt=%i\n", \
+(void *) v, Py_REFCNT(v)))
+/**** Error Handling ****/
+static PyObject *Tkinter_TclError;
+static int quitMainLoop = 0;
+static int errorInCmd = 0;
+static PyObject *excInCmd;
+static PyObject *valInCmd;
+static PyObject *trbInCmd;
+static PyObject *
+Tkinter_Error(PyObject *v)
+{
+	PyErr_SetString(Tkinter_TclError, Tkapp_Result(v));
+	return NULL;
+}
+/**** Utils ****/
+static int Tkinter_busywaitinterval = 20;
+#ifdef WITH_THREAD
+#ifndef MS_WINDOWS
+/* Millisecond sleep() for Unix platforms. */
+static void
+Sleep(int milli)
+{
+	/* XXX Too bad if you don't have select(). */
+	struct timeval t;
+	t.tv_sec = milli/1000;
+	t.tv_usec = (milli%1000) * 1000;
+	select(0, (fd_set *)0, (fd_set *)0, (fd_set *)0, &t);
+}
+#endif /* MS_WINDOWS */
+/* Wait up to 1s for the mainloop to come up. */
+static int
+WaitForMainloop(TkappObject* self)
+{
+	int i;
+	for (i = 0; i < 10; i++) {
+		if (self->dispatching)
+			return 1;
+		Py_BEGIN_ALLOW_THREADS
+		Sleep(100);
+		Py_END_ALLOW_THREADS
+	}
+	if (self->dispatching)
+		return 1;
+	PyErr_SetString(PyExc_RuntimeError, "main thread is not in main loop");
+	return 0;
+}
+#endif /* WITH_THREAD */
+static char *
+AsString(PyObject *value, PyObject *tmp)
+{
+	if (PyString_Check(value))
+		return PyString_AsString(value);
+#ifdef Py_USING_UNICODE
+	else if (PyUnicode_Check(value)) {
+		PyObject *v = PyUnicode_AsUTF8String(value);
+		if (v == NULL)
+			return NULL;
+		if (PyList_Append(tmp, v) != 0) {
+			Py_DECREF(v);
+			return NULL;
+		}
+		Py_DECREF(v);
+		return PyString_AsString(v);
+	}
+#endif
+	else {
+		PyObject *v = PyObject_Str(value);
+		if (v == NULL)
+			return NULL;
+		if (PyList_Append(tmp, v) != 0) {
+			Py_DECREF(v);
+			return NULL;
+		}
+		Py_DECREF(v);
+		return PyString_AsString(v);
+	}
+}
+#define ARGSZ 64
+static char *
+Merge(PyObject *args)
+{
+	PyObject *tmp = NULL;
+	char *argvStore[ARGSZ];
+	char **argv = NULL;
+	int fvStore[ARGSZ];
+	int *fv = NULL;
+	int argc = 0, fvc = 0, i;
+	char *res = NULL;
+	if (!(tmp = PyList_New(0)))
+	    return NULL;
+	argv = argvStore;
+	fv = fvStore;
+	if (args == NULL)
+		argc = 0;
+	else if (!PyTuple_Check(args)) {
+		argc = 1;
+		fv[0] = 0;
+		if (!(argv[0] = AsString(args, tmp)))
+			goto finally;
+	}
+	else {
+		argc = PyTuple_Size(args);
+		if (argc > ARGSZ) {
+			argv = (char **)ckalloc(argc * sizeof(char *));
+			fv = (int *)ckalloc(argc * sizeof(int));
+			if (argv == NULL || fv == NULL) {
+				PyErr_NoMemory();
+				goto finally;
+			}
+		}
+		for (i = 0; i < argc; i++) {
+			PyObject *v = PyTuple_GetItem(args, i);
+			if (PyTuple_Check(v)) {
+				fv[i] = 1;
+				if (!(argv[i] = Merge(v)))
+					goto finally;
+				fvc++;
+			}
+			else if (v == Py_None) {
+				argc = i;
+				break;
+			}
+			else {
+				fv[i] = 0;
+				if (!(argv[i] = AsString(v, tmp)))
+					goto finally;
+				fvc++;
+			}
+		}
+	}
+	res = Tcl_Merge(argc, argv);
+	if (res == NULL)
+		PyErr_SetString(Tkinter_TclError, "merge failed");
+finally:
+	for (i = 0; i < fvc; i++)
+		if (fv[i]) {
+			ckfree(argv[i]);
+		}
+	if (argv != argvStore)
+		ckfree(FREECAST argv);
+	if (fv != fvStore)
+		ckfree(FREECAST fv);
+	Py_DECREF(tmp);
+	return res;
+}
+static PyObject *
+Split(char *list)
+{
+	int argc;
+	char **argv;
+	PyObject *v;
+	if (list == NULL) {
+		Py_INCREF(Py_None);
+		return Py_None;
+	}
+	if (Tcl_SplitList((Tcl_Interp *)NULL, list, &argc, &argv) != TCL_OK) {
+		/* Not a list.
+		 * Could be a quoted string containing funnies, e.g. {"}.
+		 * Return the string itself.
+		 */
+		return PyString_FromString(list);
+	}
+	if (argc == 0)
+		v = PyString_FromString("");
+	else if (argc == 1)
+		v = PyString_FromString(argv[0]);
+	else if ((v = PyTuple_New(argc)) != NULL) {
+		int i;
+		PyObject *w;
+		for (i = 0; i < argc; i++) {
+			if ((w = Split(argv[i])) == NULL) {
+				Py_DECREF(v);
+				v = NULL;
+				break;
+			}
+			PyTuple_SetItem(v, i, w);
+		}
+	}
+	Tcl_Free(FREECAST argv);
+	return v;
+}
+/* In some cases, Tcl will still return strings that are supposed to be
+lists. SplitObj walks through a nested tuple, finding string objects that
+need to be split. */
+static PyObject *
+SplitObj(PyObject *arg)
+{
+	if (PyTuple_Check(arg)) {
+		int i, size;
+		PyObject *elem, *newelem, *result;
+		size = PyTuple_Size(arg);
+		result = NULL;
+		/* Recursively invoke SplitObj for all tuple items.
+		   If this does not return a new object, no action is
+		   needed. */
+		for(i = 0; i < size; i++) {
+			elem = PyTuple_GetItem(arg, i);
+			newelem = SplitObj(elem);
+			if (!newelem) {
+				Py_XDECREF(result);
+				return NULL;
+			}
+			if (!result) {
+				int k;
+				if (newelem == elem) {
+					Py_DECREF(newelem);
+					continue;
+				}
+				result = PyTuple_New(size);
+				if (!result)
+					return NULL;
+				for(k = 0; k < i; k++) {
+					elem = PyTuple_GetItem(arg, k);
+					Py_INCREF(elem);
+					PyTuple_SetItem(result, k, elem);
+				}
+			}
+			PyTuple_SetItem(result, i, newelem);
+		}
+		if (result)
+			return result;
+		/* Fall through, returning arg. */
+	}
+	else if (PyString_Check(arg)) {
+		int argc;
+		char **argv;
+		char *list = PyString_AsString(arg);
+		if (Tcl_SplitList((Tcl_Interp *)NULL, list, &argc, &argv) != TCL_OK) {
+			Py_INCREF(arg);
+			return arg;
+		}
+		Tcl_Free(FREECAST argv);
+		if (argc > 1)
+			return Split(PyString_AsString(arg));
+		/* Fall through, returning arg. */
+	}
+	Py_INCREF(arg);
+	return arg;
+}
+/**** Tkapp Object ****/
+#ifndef WITH_APPINIT
+int
+Tcl_AppInit(Tcl_Interp *interp)
+{
+	Tk_Window main;
+	const char * _tkinter_skip_tk_init;
+	if (Tcl_Init(interp) == TCL_ERROR) {
+		PySys_WriteStderr("Tcl_Init error: %s\n", Tcl_GetStringResult(interp));
+		return TCL_ERROR;
+	}
+	_tkinter_skip_tk_init =	Tcl_GetVar(interp, "_tkinter_skip_tk_init", TCL_GLOBAL_ONLY);
+	if (_tkinter_skip_tk_init == NULL || strcmp(_tkinter_skip_tk_init, "1")	!= 0) {
+		main = Tk_MainWindow(interp);
+		if (Tk_Init(interp) == TCL_ERROR) {
+			PySys_WriteStderr("Tk_Init error: %s\n", Tcl_GetStringResult(interp));
+			return TCL_ERROR;
+		}
+	}
+	return TCL_OK;
+}
+#endif /* !WITH_APPINIT */
+/* Initialize the Tk application; see the `main' function in
+* `tkMain.c'.
+*/
+static void EnableEventHook(void); /* Forward */
+static void DisableEventHook(void); /* Forward */
+static TkappObject *
+Tkapp_New(char *screenName, char *baseName, char *className,
+	  int interactive, int wantobjects, int	wantTk, int sync, char *use)
+{
+	TkappObject *v;
+	char *argv0;
+	v = PyObject_New(TkappObject, &Tkapp_Type);
+	if (v == NULL)
+		return NULL;
+	v->interp = Tcl_CreateInterp();
+	v->wantobjects = wantobjects;
+	v->threaded = Tcl_GetVar2Ex(v->interp, "tcl_platform", "threaded",
+				    TCL_GLOBAL_ONLY) != NULL;
+	v->thread_id = Tcl_GetCurrentThread();
+	v->dispatching = 0;
+#ifndef TCL_THREADS
+	if (v->threaded) {
+	    PyErr_SetString(PyExc_RuntimeError, "Tcl is threaded but _tkinter is not");
+	    Py_DECREF(v);
+	    return 0;
+	}
+#endif
+#ifdef WITH_THREAD
+	if (v->threaded && tcl_lock) {
+	    /* If Tcl is threaded, we don't need the lock. */
+	    PyThread_free_lock(tcl_lock);
+	    tcl_lock = NULL;
+	}
+#endif
+	v->BooleanType = Tcl_GetObjType("boolean");
+	v->ByteArrayType = Tcl_GetObjType("bytearray");
+	v->DoubleType = Tcl_GetObjType("double");
+	v->IntType = Tcl_GetObjType("int");
+	v->ListType = Tcl_GetObjType("list");
+	v->ProcBodyType = Tcl_GetObjType("procbody");
+	v->StringType = Tcl_GetObjType("string");
+	/* Delete the 'exit' command, which can screw things up */
+	Tcl_DeleteCommand(v->interp, "exit");
+	if (screenName != NULL)
+		Tcl_SetVar2(v->interp, "env", "DISPLAY",
+			    screenName, TCL_GLOBAL_ONLY);
+	if (interactive)
+		Tcl_SetVar(v->interp, "tcl_interactive", "1", TCL_GLOBAL_ONLY);
+	else
+		Tcl_SetVar(v->interp, "tcl_interactive", "0", TCL_GLOBAL_ONLY);
+	/* This is used to get the application class for Tk 4.1 and up */
+	argv0 = (char*)ckalloc(strlen(className) + 1);
+	if (!argv0) {
+		PyErr_NoMemory();
+		Py_DECREF(v);
+		return NULL;
+	}
+	strcpy(argv0, className);
+	if (isupper(Py_CHARMASK(argv0[0])))
+		argv0[0] = tolower(Py_CHARMASK(argv0[0]));
+	Tcl_SetVar(v->interp, "argv0", argv0, TCL_GLOBAL_ONLY);
+	ckfree(argv0);
+	if (! wantTk) {
+	    Tcl_SetVar(v->interp, "_tkinter_skip_tk_init", "1",	TCL_GLOBAL_ONLY);
+	}
+	/* some initial arguments need to be in argv */
+	if (sync || use) {
+		char *args;
+		int len = 0;
+		if (sync)
+			len += sizeof "-sync";
+		if (use)
+			len += strlen(use) + sizeof "-use ";
+		args = (char*)ckalloc(len);
+		if (!args) {
+			PyErr_NoMemory();
+			Py_DECREF(v);
+			return NULL;
+		}
+		args[0] = '\0';
+		if (sync)
+			strcat(args, "-sync");
+		if (use) {
+			if (sync)
+				strcat(args, " ");
+			strcat(args, "-use ");
+			strcat(args, use);
+		}
+		Tcl_SetVar(v->interp, "argv", args, TCL_GLOBAL_ONLY);
+		ckfree(args);
+	}
+	if (Tcl_AppInit(v->interp) != TCL_OK) {
+		PyObject *result = Tkinter_Error((PyObject *)v);
+		Py_DECREF((PyObject *)v);
+		return (TkappObject *)result;
+	}
+	EnableEventHook();
+	return v;
+}
+static void
+Tkapp_ThreadSend(TkappObject *self, Tcl_Event *ev,
+		 Tcl_Condition *cond, Tcl_Mutex *mutex)
+{
+	Py_BEGIN_ALLOW_THREADS;
+	Tcl_MutexLock(mutex);
+	Tcl_ThreadQueueEvent(self->thread_id, ev, TCL_QUEUE_TAIL);
+	Tcl_ThreadAlert(self->thread_id);
+	Tcl_ConditionWait(cond, mutex, NULL);
+	Tcl_MutexUnlock(mutex);
+	Py_END_ALLOW_THREADS
+}
+/** Tcl Eval **/
+typedef struct {
+	PyObject_HEAD
+	Tcl_Obj *value;
+	PyObject *string; /* This cannot cause cycles. */
+} PyTclObject;
+staticforward PyTypeObject PyTclObject_Type;
+#define PyTclObject_Check(v)	((v)->ob_type == &PyTclObject_Type)
+static PyObject *
+newPyTclObject(Tcl_Obj *arg)
+{
+	PyTclObject *self;
+	self = PyObject_New(PyTclObject, &PyTclObject_Type);
+	if (self == NULL)
+		return NULL;
+	Tcl_IncrRefCount(arg);
+	self->value = arg;
+	self->string = NULL;
+	return (PyObject*)self;
+}
+static void
+PyTclObject_dealloc(PyTclObject *self)
+{
+	Tcl_DecrRefCount(self->value);
+	Py_XDECREF(self->string);
+	PyObject_Del(self);
+}
+static PyObject *
+PyTclObject_str(PyTclObject *self)
+{
+	if (self->string && PyString_Check(self->string)) {
+		Py_INCREF(self->string);
+		return self->string;
+	}
+	/* XXX Could cache value if it is an ASCII string. */
+	return PyString_FromString(Tcl_GetString(self->value));
+}
+static char*
+PyTclObject_TclString(PyObject *self)
+{
+	return Tcl_GetString(((PyTclObject*)self)->value);
+}
+/* Like _str, but create Unicode if necessary. */
+PyDoc_STRVAR(PyTclObject_string__doc__,
+"the string representation of this object, either as string or Unicode");
+static PyObject *
+PyTclObject_string(PyTclObject *self, void *ignored)
+{
+	char *s;
+	int i, len;
+	if (!self->string) {
+		s = Tcl_GetStringFromObj(self->value, &len);
+		for (i = 0; i < len; i++)
+			if (s[i] & 0x80)
+				break;
+#ifdef Py_USING_UNICODE
+		if (i == len)
+			/* It is an ASCII string. */
+			self->string = PyString_FromStringAndSize(s, len);
+		else {
+			self->string = PyUnicode_DecodeUTF8(s, len, "strict");
+			if (!self->string) {
+				PyErr_Clear();
+				self->string = PyString_FromStringAndSize(s, len);
+			}
+		}
+#else
+		self->string = PyString_FromStringAndSize(s, len);
+#endif
+		if (!self->string)
+			return NULL;
+	}
+	Py_INCREF(self->string);
+	return self->string;
+}
+#ifdef Py_USING_UNICODE
+PyDoc_STRVAR(PyTclObject_unicode__doc__, "convert argument to unicode");
+static PyObject *
+PyTclObject_unicode(PyTclObject *self, void *ignored)
+{
+	char *s;
+	int len;
+	if (self->string && PyUnicode_Check(self->string)) {
+		Py_INCREF(self->string);
+		return self->string;
+	}
+	/* XXX Could chache result if it is non-ASCII. */
+	s = Tcl_GetStringFromObj(self->value, &len);
+	return PyUnicode_DecodeUTF8(s, len, "strict");
+}
+#endif
+static PyObject *
+PyTclObject_repr(PyTclObject *self)
+{
+	char buf[50];
+	PyOS_snprintf(buf, 50, "<%s object at %p>",
+		      self->value->typePtr->name, self->value);
+	return PyString_FromString(buf);
+}
+static int
+PyTclObject_cmp(PyTclObject *self, PyTclObject *other)
+{
+	int res;
+	res = strcmp(Tcl_GetString(self->value),
+		     Tcl_GetString(other->value));
+	if (res < 0) return -1;
+	if (res > 0) return 1;
+	return 0;
+}
+PyDoc_STRVAR(get_typename__doc__, "name of the Tcl type");
+static PyObject*
+get_typename(PyTclObject* obj, void* ignored)
+{
+	return PyString_FromString(obj->value->typePtr->name);
+}
+static PyGetSetDef PyTclObject_getsetlist[] = {
+	{"typename", (getter)get_typename, NULL, get_typename__doc__},
+	{"string", (getter)PyTclObject_string, NULL,
+	 PyTclObject_string__doc__},
+	{0},
+};
+static PyMethodDef PyTclObject_methods[] = {
+#ifdef Py_USING_UNICODE
+	{"__unicode__",	(PyCFunction)PyTclObject_unicode, METH_NOARGS,
+	PyTclObject_unicode__doc__},
+#endif
+	{0}
+};
+statichere PyTypeObject PyTclObject_Type = {
+	PyObject_HEAD_INIT(NULL)
+	0,			/*ob_size*/
+	"_tkinter.Tcl_Obj",		/*tp_name*/
+	sizeof(PyTclObject),	/*tp_basicsize*/
+	0,			/*tp_itemsize*/
+	/* methods */
+	(destructor)PyTclObject_dealloc, /*tp_dealloc*/
+	0,			/*tp_print*/
+	0,			/*tp_getattr*/
+	0,			/*tp_setattr*/
+	(cmpfunc)PyTclObject_cmp,	/*tp_compare*/
+	(reprfunc)PyTclObject_repr,	/*tp_repr*/
+	0,			/*tp_as_number*/
+	0,			/*tp_as_sequence*/
+	0,			/*tp_as_mapping*/
+	0,			/*tp_hash*/
+0,                      /*tp_call*/
+(reprfunc)PyTclObject_str,        /*tp_str*/
+PyObject_GenericGetAttr,/*tp_getattro*/
+0,                      /*tp_setattro*/
+0,                      /*tp_as_buffer*/
+Py_TPFLAGS_DEFAULT,     /*tp_flags*/
+0,                      /*tp_doc*/
+0,                      /*tp_traverse*/
+0,                      /*tp_clear*/
+0,                      /*tp_richcompare*/
+0,                      /*tp_weaklistoffset*/
+0,                      /*tp_iter*/
+0,                      /*tp_iternext*/
+PyTclObject_methods,    /*tp_methods*/
+0,			/*tp_members*/
+PyTclObject_getsetlist, /*tp_getset*/
+0,                      /*tp_base*/
+0,                      /*tp_dict*/
+0,                      /*tp_descr_get*/
+0,                      /*tp_descr_set*/
+0,                      /*tp_dictoffset*/
+0,                      /*tp_init*/
+0,                      /*tp_alloc*/
+0,                      /*tp_new*/
+0,                      /*tp_free*/
+0,                      /*tp_is_gc*/
+};
+static Tcl_Obj*
+AsObj(PyObject *value)
+{
+	Tcl_Obj *result;
+	if (PyString_Check(value))
+		return Tcl_NewStringObj(PyString_AS_STRING(value),
+					PyString_GET_SIZE(value));
+	else if (PyBool_Check(value))
+		return Tcl_NewBooleanObj(PyObject_IsTrue(value));
+	else if (PyInt_Check(value))
+		return Tcl_NewLongObj(PyInt_AS_LONG(value));
+	else if (PyFloat_Check(value))
+		return Tcl_NewDoubleObj(PyFloat_AS_DOUBLE(value));
+	else if (PyTuple_Check(value)) {
+		Tcl_Obj **argv = (Tcl_Obj**)
+			ckalloc(PyTuple_Size(value)*sizeof(Tcl_Obj*));
+		int i;
+		if(!argv)
+		  return 0;
+		for(i=0;i<PyTuple_Size(value);i++)
+		  argv[i] = AsObj(PyTuple_GetItem(value,i));
+		result = Tcl_NewListObj(PyTuple_Size(value), argv);
+		ckfree(FREECAST argv);
+		return result;
+	}
+#ifdef Py_USING_UNICODE
+	else if (PyUnicode_Check(value)) {
+		Py_UNICODE *inbuf = PyUnicode_AS_UNICODE(value);
+		Py_ssize_t size = PyUnicode_GET_SIZE(value);
+		/* This #ifdef assumes that Tcl uses UCS-2.
+		   See TCL_UTF_MAX test above. */
+#if defined(Py_UNICODE_WIDE) && TCL_UTF_MAX == 3
+		Tcl_UniChar *outbuf = NULL;
+		Py_ssize_t i;
+		size_t allocsize = ((size_t)size) * sizeof(Tcl_UniChar);
+		if (allocsize >= size)
+			outbuf = (Tcl_UniChar*)ckalloc(allocsize);
+		/* Else overflow occurred, and we take the next exit */
+		if (!outbuf) {
+			PyErr_NoMemory();
+			return NULL;
+		}
+		for (i = 0; i < size; i++) {
+			if (inbuf[i] >= 0x10000) {
+				/* Tcl doesn't do UTF-16, yet. */
+				PyErr_SetString(PyExc_ValueError,
+						"unsupported character");
+				ckfree(FREECAST outbuf);
+				return NULL;
+			}
+			outbuf[i] = inbuf[i];
+		}
+		result = Tcl_NewUnicodeObj(outbuf, size);
+		ckfree(FREECAST outbuf);
+		return result;
+#else
+		return Tcl_NewUnicodeObj(inbuf, size);
+#endif
+	}
+#endif
+	else if(PyTclObject_Check(value)) {
+		Tcl_Obj *v = ((PyTclObject*)value)->value;
+		Tcl_IncrRefCount(v);
+		return v;
+	}
+	else {
+		PyObject *v = PyObject_Str(value);
+		if (!v)
+			return 0;
+		result = AsObj(v);
+		Py_DECREF(v);
+		return result;
+	}
+}
+static PyObject*
+FromObj(PyObject* tkapp, Tcl_Obj *value)
+{
+	PyObject *result = NULL;
+	TkappObject *app = (TkappObject*)tkapp;
+	if (value->typePtr == NULL) {
+		/* If the result contains any bytes with the top bit set,
+		   it's UTF-8 and we should decode it to Unicode */
+#ifdef Py_USING_UNICODE
+		int i;
+		char *s = value->bytes;
+		int len = value->length;
+		for (i = 0; i < len; i++) {
+			if (value->bytes[i] & 0x80)
+				break;
+		}
+		if (i == value->length)
+			result = PyString_FromStringAndSize(s, len);
+		else {
+			/* Convert UTF-8 to Unicode string */
+			result = PyUnicode_DecodeUTF8(s, len, "strict");
+			if (result == NULL) {
+				PyErr_Clear();
+				result = PyString_FromStringAndSize(s, len);
+			}
+		}
+#else
+		result = PyString_FromStringAndSize(value->bytes, value->length);
+#endif
+		return result;
+	}
+	if (value->typePtr == app->BooleanType) {
+		result = value->internalRep.longValue ? Py_True : Py_False;
+		Py_INCREF(result);
+		return result;
+	}
+	if (value->typePtr == app->ByteArrayType) {
+		int size;
+		char *data = (char*)Tcl_GetByteArrayFromObj(value, &size);
+		return PyString_FromStringAndSize(data, size);
+	}
+	if (value->typePtr == app->DoubleType) {
+		return PyFloat_FromDouble(value->internalRep.doubleValue);
+	}
+	if (value->typePtr == app->IntType) {
+		return PyInt_FromLong(value->internalRep.longValue);
+	}
+	if (value->typePtr == app->ListType) {
+		int size;
+		int i, status;
+		PyObject *elem;
+		Tcl_Obj *tcl_elem;
+		status = Tcl_ListObjLength(Tkapp_Interp(tkapp), value, &size);
+		if (status == TCL_ERROR)
+			return Tkinter_Error(tkapp);
+		result = PyTuple_New(size);
+		if (!result)
+			return NULL;
+		for (i = 0; i < size; i++) {
+			status = Tcl_ListObjIndex(Tkapp_Interp(tkapp),
+						  value, i, &tcl_elem);
+			if (status == TCL_ERROR) {
+				Py_DECREF(result);
+				return Tkinter_Error(tkapp);
+			}
+			elem = FromObj(tkapp, tcl_elem);
+			if (!elem) {
+				Py_DECREF(result);
+				return NULL;
+			}
+			PyTuple_SetItem(result, i, elem);
+		}
+		return result;
+	}
+	if (value->typePtr == app->ProcBodyType) {
+	  /* fall through: return tcl object. */
+	}
+	if (value->typePtr == app->StringType) {
+#ifdef Py_USING_UNICODE
+#if defined(Py_UNICODE_WIDE) && TCL_UTF_MAX==3
+		PyObject *result;
+		int size;
+		Tcl_UniChar *input;
+		Py_UNICODE *output;
+		size = Tcl_GetCharLength(value);
+		result = PyUnicode_FromUnicode(NULL, size);
+		if (!result)
+			return NULL;
+		input = Tcl_GetUnicode(value);
+		output = PyUnicode_AS_UNICODE(result);
+		while (size--)
+			*output++ = *input++;
+		return result;
+#else
+		return PyUnicode_FromUnicode(Tcl_GetUnicode(value),
+					     Tcl_GetCharLength(value));
+#endif
+#else
+		int size;
+		char *c;
+		c = Tcl_GetStringFromObj(value, &size);
+		return PyString_FromStringAndSize(c, size);
+#endif
+	}
+	return newPyTclObject(value);
+}
+/* This mutex synchronizes inter-thread command calls. */
+TCL_DECLARE_MUTEX(call_mutex)
+typedef struct Tkapp_CallEvent {
+	Tcl_Event ev;	     /* Must be first */
+	TkappObject *self;
+	PyObject *args;
+	int flags;
+	PyObject **res;
+	PyObject **exc_type, **exc_value, **exc_tb;
+	Tcl_Condition done;
+} Tkapp_CallEvent;
+void
+Tkapp_CallDeallocArgs(Tcl_Obj** objv, Tcl_Obj** objStore, int objc)
+{
+	int i;
+	for (i = 0; i < objc; i++)
+		Tcl_DecrRefCount(objv[i]);
+	if (objv != objStore)
+		ckfree(FREECAST objv);
+}
+/* Convert Python objects to Tcl objects. This must happen in the
+interpreter thread, which may or may not be the calling thread. */
+static Tcl_Obj**
+Tkapp_CallArgs(PyObject *args, Tcl_Obj** objStore, int *pobjc)
+{
+	Tcl_Obj **objv = objStore;
+	int objc = 0, i;
+	if (args == NULL)
+		/* do nothing */;
+	else if (!PyTuple_Check(args)) {
+		objv[0] = AsObj(args);
+		if (objv[0] == 0)
+			goto finally;
+		objc = 1;
+		Tcl_IncrRefCount(objv[0]);
+	}
+	else {
+		objc = PyTuple_Size(args);
+		if (objc > ARGSZ) {
+			objv = (Tcl_Obj **)ckalloc(objc * sizeof(char *));
+			if (objv == NULL) {
+				PyErr_NoMemory();
+				objc = 0;
+				goto finally;
+			}
+		}
+		for (i = 0; i < objc; i++) {
+			PyObject *v = PyTuple_GetItem(args, i);
+			if (v == Py_None) {
+				objc = i;
+				break;
+			}
+			objv[i] = AsObj(v);
+			if (!objv[i]) {
+				/* Reset objc, so it attempts to clear
+				   objects only up to i. */
+				objc = i;
+				goto finally;
+			}
+			Tcl_IncrRefCount(objv[i]);
+		}
+	}
+	*pobjc = objc;
+	return objv;
+finally:
+	Tkapp_CallDeallocArgs(objv, objStore, objc);
+	return NULL;
+}
+/* Convert the results of a command call into a Python objects. */
+static PyObject*
+Tkapp_CallResult(TkappObject *self)
+{
+	PyObject *res = NULL;
+	if(self->wantobjects) {
+		Tcl_Obj *value = Tcl_GetObjResult(self->interp);
+		/* Not sure whether the IncrRef is necessary, but something
+		   may overwrite the interpreter result while we are
+		   converting it. */
+		Tcl_IncrRefCount(value);
+		res = FromObj((PyObject*)self, value);
+		Tcl_DecrRefCount(value);
+	} else {
+		const char *s = Tcl_GetStringResult(self->interp);
+		const char *p = s;
+		/* If the result contains any bytes with the top bit set,
+		   it's UTF-8 and we should decode it to Unicode */
+#ifdef Py_USING_UNICODE
+		while (*p != '\0') {
+			if (*p & 0x80)
+				break;
+			p++;
+		}
+		if (*p == '\0')
+			res = PyString_FromStringAndSize(s, (int)(p-s));
+		else {
+			/* Convert UTF-8 to Unicode string */
+			p = strchr(p, '\0');
+			res = PyUnicode_DecodeUTF8(s, (int)(p-s), "strict");
+			if (res == NULL) {
+				PyErr_Clear();
+				res = PyString_FromStringAndSize(s, (int)(p-s));
+			}
+		}
+#else
+		p = strchr(p, '\0');
+		res = PyString_FromStringAndSize(s, (int)(p-s));
+#endif
+	}
+	return res;
+}
+/* Tkapp_CallProc is the event procedure that is executed in the context of
+the Tcl interpreter thread. Initially, it holds the Tcl lock, and doesn't
+hold the Python lock. */
+static int
+Tkapp_CallProc(Tkapp_CallEvent *e, int flags)
+{
+	Tcl_Obj *objStore[ARGSZ];
+	Tcl_Obj **objv;
+	int objc;
+	int i;
+	ENTER_PYTHON
+	objv = Tkapp_CallArgs(e->args, objStore, &objc);
+	if (!objv) {
+		PyErr_Fetch(e->exc_type, e->exc_value, e->exc_tb);
+		*(e->res) = NULL;
+	}
+	LEAVE_PYTHON
+	if (!objv)
+		goto done;
+	i = Tcl_EvalObjv(e->self->interp, objc, objv, e->flags);
+	ENTER_PYTHON
+	if (i == TCL_ERROR) {
+		*(e->res) = NULL;
+		*(e->exc_type) = NULL;
+		*(e->exc_tb) = NULL;
+		*(e->exc_value) = PyObject_CallFunction(
+			Tkinter_TclError, "s",
+			Tcl_GetStringResult(e->self->interp));
+	}
+	else {
+		*(e->res) = Tkapp_CallResult(e->self);
+	}
+	LEAVE_PYTHON
+done:
+	/* Wake up calling thread. */
+	Tcl_MutexLock(&call_mutex);
+	Tcl_ConditionNotify(&e->done);
+	Tcl_MutexUnlock(&call_mutex);
+	return 1;
+}
+/* This is the main entry point for calling a Tcl command.
+It supports three cases, with regard to threading:
+1. Tcl is not threaded: Must have the Tcl lock, then can invoke command in
+the context of the calling thread.
+2. Tcl is threaded, caller of the command is in the interpreter thread:
+Execute the command in the calling thread. Since the Tcl lock will
+not be used, we can merge that with case 1.
+3. Tcl is threaded, caller is in a different thread: Must queue an event to
+the interpreter thread. Allocation of Tcl objects needs to occur in the
+interpreter thread, so we ship the PyObject* args to the target thread,
+and perform processing there. */
+static PyObject *
+Tkapp_Call(PyObject *selfptr, PyObject *args)
+{
+	Tcl_Obj *objStore[ARGSZ];
+	Tcl_Obj **objv = NULL;
+	int objc, i;
+	PyObject *res = NULL;
+	TkappObject *self = (TkappObject*)selfptr;
+	/* Could add TCL_EVAL_GLOBAL if wrapped by GlobalCall... */
+	int flags = TCL_EVAL_DIRECT;
+	/* If args is a single tuple, replace with contents of tuple */
+	if (1 == PyTuple_Size(args)){
+		PyObject* item = PyTuple_GetItem(args, 0);
+		if (PyTuple_Check(item))
+			args = item;
+	}
+#ifdef WITH_THREAD
+	if (self->threaded && self->thread_id != Tcl_GetCurrentThread()) {
+		/* We cannot call the command directly. Instead, we must
+		   marshal the parameters to the interpreter thread. */
+		Tkapp_CallEvent *ev;
+		PyObject *exc_type, *exc_value, *exc_tb;
+		if (!WaitForMainloop(self))
+			return NULL;
+		ev = (Tkapp_CallEvent*)ckalloc(sizeof(Tkapp_CallEvent));
+		ev->ev.proc = (Tcl_EventProc*)Tkapp_CallProc;
+		ev->self = self;
+		ev->args = args;
+		ev->res = &res;
+		ev->exc_type = &exc_type;
+		ev->exc_value = &exc_value;
+		ev->exc_tb = &exc_tb;
+		ev->done = (Tcl_Condition)0;
+		Tkapp_ThreadSend(self, (Tcl_Event*)ev, &ev->done, &call_mutex);
+		if (res == NULL) {
+			if (exc_type)
+				PyErr_Restore(exc_type, exc_value, exc_tb);
+			else
+				PyErr_SetObject(Tkinter_TclError, exc_value);
+		}
+	}
+	else
+#endif
+	{
+		objv = Tkapp_CallArgs(args, objStore, &objc);
+		if (!objv)
+			return NULL;
+		ENTER_TCL
+		i = Tcl_EvalObjv(self->interp, objc, objv, flags);
+		ENTER_OVERLAP
+		if (i == TCL_ERROR)
+			Tkinter_Error(selfptr);
+		else
+			res = Tkapp_CallResult(self);
+		LEAVE_OVERLAP_TCL
+		Tkapp_CallDeallocArgs(objv, objStore, objc);
+	}
+	return res;
+}
+static PyObject *
+Tkapp_GlobalCall(PyObject *self, PyObject *args)
+{
+	/* Could do the same here as for Tkapp_Call(), but this is not used
+	   much, so I can't be bothered.  Unfortunately Tcl doesn't export a
+	   way for the user to do what all its Global* variants do (save and
+	   reset the scope pointer, call the local version, restore the saved
+	   scope pointer). */
+	char *cmd;
+	PyObject *res = NULL;
+	CHECK_TCL_APPARTMENT;
+	cmd  = Merge(args);
+	if (cmd) {
+		int err;
+		ENTER_TCL
+		err = Tcl_GlobalEval(Tkapp_Interp(self), cmd);
+		ENTER_OVERLAP
+		if (err == TCL_ERROR)
+			res = Tkinter_Error(self);
+		else
+			res = PyString_FromString(Tkapp_Result(self));
+		LEAVE_OVERLAP_TCL
+		ckfree(cmd);
+	}
+	return res;
+}
+static PyObject *
+Tkapp_Eval(PyObject *self, PyObject *args)
+{
+	char *script;
+	PyObject *res = NULL;
+	int err;
+	if (!PyArg_ParseTuple(args, "s:eval", &script))
+		return NULL;
+	CHECK_TCL_APPARTMENT;
+	ENTER_TCL
+	err = Tcl_Eval(Tkapp_Interp(self), script);
+	ENTER_OVERLAP
+	if (err == TCL_ERROR)
+		res = Tkinter_Error(self);
+	else
+		res = PyString_FromString(Tkapp_Result(self));
+	LEAVE_OVERLAP_TCL
+	return res;
+}
+static PyObject *
+Tkapp_GlobalEval(PyObject *self, PyObject *args)
+{
+	char *script;
+	PyObject *res = NULL;
+	int err;
+	if (!PyArg_ParseTuple(args, "s:globaleval", &script))
+		return NULL;
+	CHECK_TCL_APPARTMENT;
+	ENTER_TCL
+	err = Tcl_GlobalEval(Tkapp_Interp(self), script);
+	ENTER_OVERLAP
+	if (err == TCL_ERROR)
+		res = Tkinter_Error(self);
+	else
+		res = PyString_FromString(Tkapp_Result(self));
+	LEAVE_OVERLAP_TCL
+	return res;
+}
+static PyObject *
+Tkapp_EvalFile(PyObject *self, PyObject *args)
+{
+	char *fileName;
+	PyObject *res = NULL;
+	int err;
+	if (!PyArg_ParseTuple(args, "s:evalfile", &fileName))
+		return NULL;
+	CHECK_TCL_APPARTMENT;
+	ENTER_TCL
+	err = Tcl_EvalFile(Tkapp_Interp(self), fileName);
+	ENTER_OVERLAP
+	if (err == TCL_ERROR)
+		res = Tkinter_Error(self);
+	else
+		res = PyString_FromString(Tkapp_Result(self));
+	LEAVE_OVERLAP_TCL
+	return res;
+}
+static PyObject *
+Tkapp_Record(PyObject *self, PyObject *args)
+{
+	char *script;
+	PyObject *res = NULL;
+	int err;
+	if (!PyArg_ParseTuple(args, "s", &script))
+		return NULL;
+	CHECK_TCL_APPARTMENT;
+	ENTER_TCL
+	err = Tcl_RecordAndEval(Tkapp_Interp(self), script, TCL_NO_EVAL);
+	ENTER_OVERLAP
+	if (err == TCL_ERROR)
+		res = Tkinter_Error(self);
+	else
+		res = PyString_FromString(Tkapp_Result(self));
+	LEAVE_OVERLAP_TCL
+	return res;
+}
+static PyObject *
+Tkapp_AddErrorInfo(PyObject *self, PyObject *args)
+{
+	char *msg;
+	if (!PyArg_ParseTuple(args, "s:adderrorinfo", &msg))
+		return NULL;
+	CHECK_TCL_APPARTMENT;
+	ENTER_TCL
+	Tcl_AddErrorInfo(Tkapp_Interp(self), msg);
+	LEAVE_TCL
+	Py_INCREF(Py_None);
+	return Py_None;
+}
+/** Tcl Variable **/
+TCL_DECLARE_MUTEX(var_mutex)
+typedef PyObject* (*EventFunc)(PyObject*, PyObject *args, int flags);
+typedef struct VarEvent {
+	Tcl_Event ev; /* must be first */
+	PyObject *self;
+	PyObject *args;
+	int flags;
+	EventFunc func;
+	PyObject **res;
+	PyObject **exc_type;
+	PyObject **exc_val;
+	Tcl_Condition cond;
+} VarEvent;
+static int
+varname_converter(PyObject *in, void *_out)
+{
+	char **out = (char**)_out;
+	if (PyString_Check(in)) {
+		*out = PyString_AsString(in);
+		return 1;
+	}
+	if (PyTclObject_Check(in)) {
+		*out = PyTclObject_TclString(in);
+		return 1;
+	}
+	/* XXX: Should give diagnostics. */
+	return 0;
+}
+static void
+var_perform(VarEvent *ev)
+{
+	*(ev->res) = ev->func(ev->self, ev->args, ev->flags);
+	if (!*(ev->res)) {
+		PyObject *exc, *val, *tb;
+		PyErr_Fetch(&exc, &val, &tb);
+		PyErr_NormalizeException(&exc, &val, &tb);
+		*(ev->exc_type) = exc;
+		*(ev->exc_val) = val;
+		Py_DECREF(tb);
+	}
+}
+static int
+var_proc(VarEvent* ev, int flags)
+{
+	ENTER_PYTHON
+var_perform(ev);
+	Tcl_MutexLock(&var_mutex);
+	Tcl_ConditionNotify(&ev->cond);
+	Tcl_MutexUnlock(&var_mutex);
+	LEAVE_PYTHON
+	return 1;
+}
+static PyObject*
+var_invoke(EventFunc func, PyObject *selfptr, PyObject *args, int flags)
+{
+	TkappObject *self = (TkappObject*)selfptr;
+#ifdef WITH_THREAD
+	if (self->threaded && self->thread_id != Tcl_GetCurrentThread()) {
+		TkappObject *self = (TkappObject*)selfptr;
+		VarEvent *ev;
+		PyObject *res, *exc_type, *exc_val;
+		/* The current thread is not the interpreter thread.  Marshal
+		   the call to the interpreter thread, then wait for
+		   completion. */
+		if (!WaitForMainloop(self))
+			return NULL;
+		ev = (VarEvent*)ckalloc(sizeof(VarEvent));
+		ev->self = selfptr;
+		ev->args = args;
+		ev->flags = flags;
+		ev->func = func;
+		ev->res = &res;
+		ev->exc_type = &exc_type;
+		ev->exc_val = &exc_val;
+		ev->cond = NULL;
+		ev->ev.proc = (Tcl_EventProc*)var_proc;
+		Tkapp_ThreadSend(self, (Tcl_Event*)ev, &ev->cond, &var_mutex);
+		if (!res) {
+			PyErr_SetObject(exc_type, exc_val);
+			Py_DECREF(exc_type);
+			Py_DECREF(exc_val);
+			return NULL;
+		}
+		return res;
+	}
+#endif
+/* Tcl is not threaded, or this is the interpreter thread. */
+	return func(selfptr, args, flags);
+}
+static PyObject *
+SetVar(PyObject *self, PyObject *args, int flags)
+{
+	char *name1, *name2;
+	PyObject *newValue;
+	PyObject *res = NULL;
+	Tcl_Obj *newval, *ok;
+	if (PyArg_ParseTuple(args, "O&O:setvar",
+			     varname_converter, &name1, &newValue)) {
+		/* XXX Acquire tcl lock??? */
+		newval = AsObj(newValue);
+		if (newval == NULL)
+			return NULL;
+		ENTER_TCL
+		ok = Tcl_SetVar2Ex(Tkapp_Interp(self), name1, NULL,
+				   newval, flags);
+		ENTER_OVERLAP
+		if (!ok)
+			Tkinter_Error(self);
+		else {
+			res = Py_None;
+			Py_INCREF(res);
+		}
+		LEAVE_OVERLAP_TCL
+	}
+	else {
+		PyErr_Clear();
+		if (PyArg_ParseTuple(args, "ssO:setvar",
+				     &name1, &name2, &newValue)) {
+			/* XXX must hold tcl lock already??? */
+			newval = AsObj(newValue);
+			ENTER_TCL
+			ok = Tcl_SetVar2Ex(Tkapp_Interp(self), name1, name2, newval, flags);
+			ENTER_OVERLAP
+			if (!ok)
+				Tkinter_Error(self);
+			else {
+				res = Py_None;
+				Py_INCREF(res);
+			}
+			LEAVE_OVERLAP_TCL
+		}
+		else {
+			return NULL;
+		}
+	}
+	return res;
+}
+static PyObject *
+Tkapp_SetVar(PyObject *self, PyObject *args)
+{
+	return var_invoke(SetVar, self, args, TCL_LEAVE_ERR_MSG);
+}
+static PyObject *
+Tkapp_GlobalSetVar(PyObject *self, PyObject *args)
+{
+	return var_invoke(SetVar, self, args, TCL_LEAVE_ERR_MSG | TCL_GLOBAL_ONLY);
+}
+static PyObject *
+GetVar(PyObject *self, PyObject *args, int flags)
+{
+	char *name1, *name2=NULL;
+	PyObject *res = NULL;
+	Tcl_Obj *tres;
+	if (!PyArg_ParseTuple(args, "O&|s:getvar",
+			      varname_converter, &name1, &name2))
+		return NULL;
+	ENTER_TCL
+	tres = Tcl_GetVar2Ex(Tkapp_Interp(self), name1, name2, flags);
+	ENTER_OVERLAP
+	if (tres == NULL) {
+		PyErr_SetString(Tkinter_TclError, Tcl_GetStringResult(Tkapp_Interp(self)));
+	} else {
+		if (((TkappObject*)self)->wantobjects) {
+			res = FromObj(self, tres);
+		}
+		else {
+			res = PyString_FromString(Tcl_GetString(tres));
+		}
+	}
+	LEAVE_OVERLAP_TCL
+	return res;
+}
+static PyObject *
+Tkapp_GetVar(PyObject *self, PyObject *args)
+{
+	return var_invoke(GetVar, self, args, TCL_LEAVE_ERR_MSG);
+}
+static PyObject *
+Tkapp_GlobalGetVar(PyObject *self, PyObject *args)
+{
+	return var_invoke(GetVar, self, args, TCL_LEAVE_ERR_MSG | TCL_GLOBAL_ONLY);
+}
+static PyObject *
+UnsetVar(PyObject *self, PyObject *args, int flags)
+{
+	char *name1, *name2=NULL;
+	int code;
+	PyObject *res = NULL;
+	if (!PyArg_ParseTuple(args, "s|s:unsetvar", &name1, &name2))
+		return NULL;
+	ENTER_TCL
+	code = Tcl_UnsetVar2(Tkapp_Interp(self), name1, name2, flags);
+	ENTER_OVERLAP
+	if (code == TCL_ERROR)
+		res = Tkinter_Error(self);
+	else {
+		Py_INCREF(Py_None);
+		res = Py_None;
+	}
+	LEAVE_OVERLAP_TCL
+	return res;
+}
+static PyObject *
+Tkapp_UnsetVar(PyObject *self, PyObject *args)
+{
+	return var_invoke(UnsetVar, self, args, TCL_LEAVE_ERR_MSG);
+}
+static PyObject *
+Tkapp_GlobalUnsetVar(PyObject *self, PyObject *args)
+{
+	return var_invoke(UnsetVar, self, args, TCL_LEAVE_ERR_MSG | TCL_GLOBAL_ONLY);
+}
+/** Tcl to Python **/
+static PyObject *
+Tkapp_GetInt(PyObject *self, PyObject *args)
+{
+	char *s;
+	int v;
+	if (PyTuple_Size(args) == 1) {
+		PyObject* o = PyTuple_GetItem(args, 0);
+		if (PyInt_Check(o)) {
+			Py_INCREF(o);
+			return o;
+		}
+	}
+	if (!PyArg_ParseTuple(args, "s:getint", &s))
+		return NULL;
+	if (Tcl_GetInt(Tkapp_Interp(self), s, &v) == TCL_ERROR)
+		return Tkinter_Error(self);
+	return Py_BuildValue("i", v);
+}
+static PyObject *
+Tkapp_GetDouble(PyObject *self, PyObject *args)
+{
+	char *s;
+	double v;
+	if (PyTuple_Size(args) == 1) {
+		PyObject *o = PyTuple_GetItem(args, 0);
+		if (PyFloat_Check(o)) {
+			Py_INCREF(o);
+			return o;
+		}
+	}
+	if (!PyArg_ParseTuple(args, "s:getdouble", &s))
+		return NULL;
+	if (Tcl_GetDouble(Tkapp_Interp(self), s, &v) == TCL_ERROR)
+		return Tkinter_Error(self);
+	return Py_BuildValue("d", v);
+}
+static PyObject *
+Tkapp_GetBoolean(PyObject *self, PyObject *args)
+{
+	char *s;
+	int v;
+	if (PyTuple_Size(args) == 1) {
+		PyObject *o = PyTuple_GetItem(args, 0);
+		if (PyInt_Check(o)) {
+			Py_INCREF(o);
+			return o;
+		}
+	}
+	if (!PyArg_ParseTuple(args, "s:getboolean", &s))
+		return NULL;
+	if (Tcl_GetBoolean(Tkapp_Interp(self), s, &v) == TCL_ERROR)
+		return Tkinter_Error(self);
+	return PyBool_FromLong(v);
+}
+static PyObject *
+Tkapp_ExprString(PyObject *self, PyObject *args)
+{
+	char *s;
+	PyObject *res = NULL;
+	int retval;
+	if (!PyArg_ParseTuple(args, "s:exprstring", &s))
+		return NULL;
+	CHECK_TCL_APPARTMENT;
+	ENTER_TCL
+	retval = Tcl_ExprString(Tkapp_Interp(self), s);
+	ENTER_OVERLAP
+	if (retval == TCL_ERROR)
+		res = Tkinter_Error(self);
+	else
+		res = Py_BuildValue("s", Tkapp_Result(self));
+	LEAVE_OVERLAP_TCL
+	return res;
+}
+static PyObject *
+Tkapp_ExprLong(PyObject *self, PyObject *args)
+{
+	char *s;
+	PyObject *res = NULL;
+	int retval;
+	long v;
+	if (!PyArg_ParseTuple(args, "s:exprlong", &s))
+		return NULL;
+	CHECK_TCL_APPARTMENT;
+	ENTER_TCL
+	retval = Tcl_ExprLong(Tkapp_Interp(self), s, &v);
+	ENTER_OVERLAP
+	if (retval == TCL_ERROR)
+		res = Tkinter_Error(self);
+	else
+		res = Py_BuildValue("l", v);
+	LEAVE_OVERLAP_TCL
+	return res;
+}
+static PyObject *
+Tkapp_ExprDouble(PyObject *self, PyObject *args)
+{
+	char *s;
+	PyObject *res = NULL;
+	double v;
+	int retval;
+	if (!PyArg_ParseTuple(args, "s:exprdouble", &s))
+		return NULL;
+	CHECK_TCL_APPARTMENT;
+	PyFPE_START_PROTECT("Tkapp_ExprDouble", return 0)
+	ENTER_TCL
+	retval = Tcl_ExprDouble(Tkapp_Interp(self), s, &v);
+	ENTER_OVERLAP
+	PyFPE_END_PROTECT(retval)
+	if (retval == TCL_ERROR)
+		res = Tkinter_Error(self);
+	else
+		res = Py_BuildValue("d", v);
+	LEAVE_OVERLAP_TCL
+	return res;
+}
+static PyObject *
+Tkapp_ExprBoolean(PyObject *self, PyObject *args)
+{
+	char *s;
+	PyObject *res = NULL;
+	int retval;
+	int v;
+	if (!PyArg_ParseTuple(args, "s:exprboolean", &s))
+		return NULL;
+	CHECK_TCL_APPARTMENT;
+	ENTER_TCL
+	retval = Tcl_ExprBoolean(Tkapp_Interp(self), s, &v);
+	ENTER_OVERLAP
+	if (retval == TCL_ERROR)
+		res = Tkinter_Error(self);
+	else
+		res = Py_BuildValue("i", v);
+	LEAVE_OVERLAP_TCL
+	return res;
+}
+static PyObject *
+Tkapp_SplitList(PyObject *self, PyObject *args)
+{
+	char *list;
+	int argc;
+	char **argv;
+	PyObject *v;
+	int i;
+	if (PyTuple_Size(args) == 1) {
+		v = PyTuple_GetItem(args, 0);
+		if (PyTuple_Check(v)) {
+			Py_INCREF(v);
+			return v;
+		}
+	}
+	if (!PyArg_ParseTuple(args, "et:splitlist", "utf-8", &list))
+		return NULL;
+	if (Tcl_SplitList(Tkapp_Interp(self), list,
+			  &argc, &argv) == TCL_ERROR)  {
+		PyMem_Free(list);
+		return Tkinter_Error(self);
+	}
+	if (!(v = PyTuple_New(argc)))
+		goto finally;
+	for (i = 0; i < argc; i++) {
+		PyObject *s = PyString_FromString(argv[i]);
+		if (!s || PyTuple_SetItem(v, i, s)) {
+			Py_DECREF(v);
+			v = NULL;
+			goto finally;
+		}
+	}
+finally:
+	ckfree(FREECAST argv);
+	PyMem_Free(list);
+	return v;
+}
+static PyObject *
+Tkapp_Split(PyObject *self, PyObject *args)
+{
+	PyObject *v;
+	char *list;
+	if (PyTuple_Size(args) == 1) {
+		PyObject* o = PyTuple_GetItem(args, 0);
+		if (PyTuple_Check(o)) {
+			o = SplitObj(o);
+			return o;
+		}
+	}
+	if (!PyArg_ParseTuple(args, "et:split", "utf-8", &list))
+		return NULL;
+	v = Split(list);
+	PyMem_Free(list);
+	return v;
+}
+static PyObject *
+Tkapp_Merge(PyObject *self, PyObject *args)
+{
+	char *s = Merge(args);
+	PyObject *res = NULL;
+	if (s) {
+		res = PyString_FromString(s);
+		ckfree(s);
+	}
+	return res;
+}
+/** Tcl Command **/
+/* Client data struct */
+typedef struct {
+	PyObject *self;
+	PyObject *func;
+} PythonCmd_ClientData;
+static int
+PythonCmd_Error(Tcl_Interp *interp)
+{
+	errorInCmd = 1;
+	PyErr_Fetch(&excInCmd, &valInCmd, &trbInCmd);
+	LEAVE_PYTHON
+	return TCL_ERROR;
+}
+/* This is the Tcl command that acts as a wrapper for Python
+* function or method.
+*/
+static int
+PythonCmd(ClientData clientData, Tcl_Interp *interp, int argc, char *argv[])
+{
+	PythonCmd_ClientData *data = (PythonCmd_ClientData *)clientData;
+	PyObject *self, *func, *arg, *res;
+	int i, rv;
+	Tcl_Obj *obj_res;
+	ENTER_PYTHON
+	/* TBD: no error checking here since we know, via the
+	 * Tkapp_CreateCommand() that the client data is a two-tuple
+	 */
+	self = data->self;
+	func = data->func;
+	/* Create argument list (argv1, ..., argvN) */
+	if (!(arg = PyTuple_New(argc - 1)))
+		return PythonCmd_Error(interp);
+	for (i = 0; i < (argc - 1); i++) {
+		PyObject *s = PyString_FromString(argv[i + 1]);
+		if (!s || PyTuple_SetItem(arg, i, s)) {
+			Py_DECREF(arg);
+			return PythonCmd_Error(interp);
+		}
+	}
+	res = PyEval_CallObject(func, arg);
+	Py_DECREF(arg);
+	if (res == NULL)
+		return PythonCmd_Error(interp);
+	obj_res = AsObj(res);
+	if (obj_res == NULL) {
+		Py_DECREF(res);
+		return PythonCmd_Error(interp);
+	}
+	else {
+		Tcl_SetObjResult(Tkapp_Interp(self), obj_res);
+		rv = TCL_OK;
+	}
+	Py_DECREF(res);
+	LEAVE_PYTHON
+	return rv;
+}
+static void
+PythonCmdDelete(ClientData clientData)
+{
+	PythonCmd_ClientData *data = (PythonCmd_ClientData *)clientData;
+	ENTER_PYTHON
+	Py_XDECREF(data->self);
+	Py_XDECREF(data->func);
+	PyMem_DEL(data);
+	LEAVE_PYTHON
+}
+TCL_DECLARE_MUTEX(command_mutex)
+typedef struct CommandEvent{
+	Tcl_Event ev;
+	Tcl_Interp* interp;
+	char *name;
+	int create;
+	int *status;
+	ClientData *data;
+	Tcl_Condition done;
+} CommandEvent;
+static int
+Tkapp_CommandProc(CommandEvent *ev, int flags)
+{
+	if (ev->create)
+		*ev->status = Tcl_CreateCommand(
+			ev->interp, ev->name, PythonCmd,
+			ev->data, PythonCmdDelete) == NULL;
+	else
+		*ev->status = Tcl_DeleteCommand(ev->interp, ev->name);
+	Tcl_MutexLock(&command_mutex);
+	Tcl_ConditionNotify(&ev->done);
+	Tcl_MutexUnlock(&command_mutex);
+	return 1;
+}
+static PyObject *
+Tkapp_CreateCommand(PyObject *selfptr, PyObject *args)
+{
+	TkappObject *self = (TkappObject*)selfptr;
+	PythonCmd_ClientData *data;
+	char *cmdName;
+	PyObject *func;
+	int err;
+	if (!PyArg_ParseTuple(args, "sO:createcommand", &cmdName, &func))
+		return NULL;
+	if (!PyCallable_Check(func)) {
+		PyErr_SetString(PyExc_TypeError, "command not callable");
+		return NULL;
+	}
+#ifdef WITH_THREAD
+	if (self->threaded && self->thread_id != Tcl_GetCurrentThread() &&
+	    !WaitForMainloop(self))
+		return NULL;
+#endif
+	data = PyMem_NEW(PythonCmd_ClientData, 1);
+	if (!data)
+		return PyErr_NoMemory();
+	Py_INCREF(self);
+	Py_INCREF(func);
+	data->self = selfptr;
+	data->func = func;
+	if (self->threaded && self->thread_id != Tcl_GetCurrentThread()) {
+		CommandEvent *ev = (CommandEvent*)ckalloc(sizeof(CommandEvent));
+		ev->ev.proc = (Tcl_EventProc*)Tkapp_CommandProc;
+		ev->interp = self->interp;
+		ev->create = 1;
+		ev->name = cmdName;
+		ev->data = (ClientData)data;
+		ev->status = &err;
+		ev->done = NULL;
+		Tkapp_ThreadSend(self, (Tcl_Event*)ev, &ev->done, &command_mutex);
+	}
+	else {
+		ENTER_TCL
+		err = Tcl_CreateCommand(
+			Tkapp_Interp(self), cmdName, PythonCmd,
+			(ClientData)data, PythonCmdDelete) == NULL;
+		LEAVE_TCL
+	}
+	if (err) {
+		PyErr_SetString(Tkinter_TclError, "can't create Tcl command");
+		PyMem_DEL(data);
+		return NULL;
+	}
+	Py_INCREF(Py_None);
+	return Py_None;
+}
+static PyObject *
+Tkapp_DeleteCommand(PyObject *selfptr, PyObject *args)
+{
+	TkappObject *self = (TkappObject*)selfptr;
+	char *cmdName;
+	int err;
+	if (!PyArg_ParseTuple(args, "s:deletecommand", &cmdName))
+		return NULL;
+	if (self->threaded && self->thread_id != Tcl_GetCurrentThread()) {
+		CommandEvent *ev;
+		ev = (CommandEvent*)ckalloc(sizeof(CommandEvent));
+		ev->ev.proc = (Tcl_EventProc*)Tkapp_CommandProc;
+		ev->interp = self->interp;
+		ev->create = 0;
+		ev->name = cmdName;
+		ev->status = &err;
+		ev->done = NULL;
+		Tkapp_ThreadSend(self, (Tcl_Event*)ev, &ev->done,
+				 &command_mutex);
+	}
+	else {
+		ENTER_TCL
+		err = Tcl_DeleteCommand(self->interp, cmdName);
+		LEAVE_TCL
+	}
+	if (err == -1) {
+		PyErr_SetString(Tkinter_TclError, "can't delete Tcl command");
+		return NULL;
+	}
+	Py_INCREF(Py_None);
+	return Py_None;
+}
+#ifdef HAVE_CREATEFILEHANDLER
+/** File Handler **/
+typedef struct _fhcdata {
+	PyObject *func;
+	PyObject *file;
+	int id;
+	struct _fhcdata *next;
+} FileHandler_ClientData;
+static FileHandler_ClientData *HeadFHCD;
+static FileHandler_ClientData *
+NewFHCD(PyObject *func, PyObject *file, int id)
+{
+	FileHandler_ClientData *p;
+	p = PyMem_NEW(FileHandler_ClientData, 1);
+	if (p != NULL) {
+		Py_XINCREF(func);
+		Py_XINCREF(file);
+		p->func = func;
+		p->file = file;
+		p->id = id;
+		p->next = HeadFHCD;
+		HeadFHCD = p;
+	}
+	return p;
+}
+static void
+DeleteFHCD(int id)
+{
+	FileHandler_ClientData *p, **pp;
+	pp = &HeadFHCD;
+	while ((p = *pp) != NULL) {
+		if (p->id == id) {
+			*pp = p->next;
+			Py_XDECREF(p->func);
+			Py_XDECREF(p->file);
+			PyMem_DEL(p);
+		}
+		else
+			pp = &p->next;
+	}
+}
+static void
+FileHandler(ClientData clientData, int mask)
+{
+	FileHandler_ClientData *data = (FileHandler_ClientData *)clientData;
+	PyObject *func, *file, *arg, *res;
+	ENTER_PYTHON
+	func = data->func;
+	file = data->file;
+	arg = Py_BuildValue("(Oi)", file, (long) mask);
+	res = PyEval_CallObject(func, arg);
+	Py_DECREF(arg);
+	if (res == NULL) {
+		errorInCmd = 1;
+		PyErr_Fetch(&excInCmd, &valInCmd, &trbInCmd);
+	}
+	Py_XDECREF(res);
+	LEAVE_PYTHON
+}
+static PyObject *
+Tkapp_CreateFileHandler(PyObject *self, PyObject *args)
+/* args is (file, mask, func) */
+{
+	FileHandler_ClientData *data;
+	PyObject *file, *func;
+	int mask, tfile;
+	if (!PyArg_ParseTuple(args, "OiO:createfilehandler",
+			      &file, &mask, &func))
+		return NULL;
+#ifdef WITH_THREAD
+	if (!self && !tcl_lock) {
+		/* We don't have the Tcl lock since Tcl is threaded. */
+		PyErr_SetString(PyExc_RuntimeError,
+				"_tkinter.createfilehandler not supported "
+				"for threaded Tcl");
+		return NULL;
+	}
+#endif
+	if (self) {
+		CHECK_TCL_APPARTMENT;
+	}
+	tfile = PyObject_AsFileDescriptor(file);
+	if (tfile < 0)
+		return NULL;
+	if (!PyCallable_Check(func)) {
+		PyErr_SetString(PyExc_TypeError, "bad argument list");
+		return NULL;
+	}
+	data = NewFHCD(func, file, tfile);
+	if (data == NULL)
+		return NULL;
+	/* Ought to check for null Tcl_File object... */
+	ENTER_TCL
+	Tcl_CreateFileHandler(tfile, mask, FileHandler, (ClientData) data);
+	LEAVE_TCL
+	Py_INCREF(Py_None);
+	return Py_None;
+}
+static PyObject *
+Tkapp_DeleteFileHandler(PyObject *self, PyObject *args)
+{
+	PyObject *file;
+	int tfile;
+	if (!PyArg_ParseTuple(args, "O:deletefilehandler", &file))
+		return NULL;
+#ifdef WITH_THREAD
+	if (!self && !tcl_lock) {
+		/* We don't have the Tcl lock since Tcl is threaded. */
+		PyErr_SetString(PyExc_RuntimeError,
+				"_tkinter.deletefilehandler not supported "
+				"for threaded Tcl");
+		return NULL;
+	}
+#endif
+	if (self) {
+		CHECK_TCL_APPARTMENT;
+	}
+	tfile = PyObject_AsFileDescriptor(file);
+	if (tfile < 0)
+		return NULL;
+	DeleteFHCD(tfile);
+	/* Ought to check for null Tcl_File object... */
+	ENTER_TCL
+	Tcl_DeleteFileHandler(tfile);
+	LEAVE_TCL
+	Py_INCREF(Py_None);
+	return Py_None;
+}
+#endif /* HAVE_CREATEFILEHANDLER */
+/**** Tktt Object (timer token) ****/
+static PyTypeObject Tktt_Type;
+typedef struct {
+	PyObject_HEAD
+	Tcl_TimerToken token;
+	PyObject *func;
+} TkttObject;
+static PyObject *
+Tktt_DeleteTimerHandler(PyObject *self, PyObject *args)
+{
+	TkttObject *v = (TkttObject *)self;
+	PyObject *func = v->func;
+	if (!PyArg_ParseTuple(args, ":deletetimerhandler"))
+		return NULL;
+	if (v->token != NULL) {
+		Tcl_DeleteTimerHandler(v->token);
+		v->token = NULL;
+	}
+	if (func != NULL) {
+		v->func = NULL;
+		Py_DECREF(func);
+		Py_DECREF(v); /* See Tktt_New() */
+	}
+	Py_INCREF(Py_None);
+	return Py_None;
+}
+static PyMethodDef Tktt_methods[] =
+{
+	{"deletetimerhandler", Tktt_DeleteTimerHandler, METH_VARARGS},
+	{NULL, NULL}
+};
+static TkttObject *
+Tktt_New(PyObject *func)
+{
+	TkttObject *v;
+	v = PyObject_New(TkttObject, &Tktt_Type);
+	if (v == NULL)
+		return NULL;
+	Py_INCREF(func);
+	v->token = NULL;
+	v->func = func;
+	/* Extra reference, deleted when called or when handler is deleted */
+	Py_INCREF(v);
+	return v;
+}
+static void
+Tktt_Dealloc(PyObject *self)
+{
+	TkttObject *v = (TkttObject *)self;
+	PyObject *func = v->func;
+	Py_XDECREF(func);
+	PyObject_Del(self);
+}
+static PyObject *
+Tktt_Repr(PyObject *self)
+{
+	TkttObject *v = (TkttObject *)self;
+	char buf[100];
+	PyOS_snprintf(buf, sizeof(buf), "<tktimertoken at %p%s>", v,
+	                v->func == NULL ? ", handler deleted" : "");
+	return PyString_FromString(buf);
+}
+static PyObject *
+Tktt_GetAttr(PyObject *self, char *name)
+{
+	return Py_FindMethod(Tktt_methods, self, name);
+}
+static PyTypeObject Tktt_Type =
+{
+	PyVarObject_HEAD_INIT(NULL, 0)
+	"tktimertoken",			     /*tp_name */
+	sizeof(TkttObject),		     /*tp_basicsize */
+	0,				     /*tp_itemsize */
+	Tktt_Dealloc,			     /*tp_dealloc */
+	0,				     /*tp_print */
+	Tktt_GetAttr,			     /*tp_getattr */
+	0,				     /*tp_setattr */
+	0,				     /*tp_compare */
+	Tktt_Repr,			     /*tp_repr */
+	0,				     /*tp_as_number */
+	0,				     /*tp_as_sequence */
+	0,				     /*tp_as_mapping */
+	0,				     /*tp_hash */
+};
+/** Timer Handler **/
+static void
+TimerHandler(ClientData clientData)
+{
+	TkttObject *v = (TkttObject *)clientData;
+	PyObject *func = v->func;
+	PyObject *res;
+	if (func == NULL)
+		return;
+	v->func = NULL;
+	ENTER_PYTHON
+	res  = PyEval_CallObject(func, NULL);
+	Py_DECREF(func);
+	Py_DECREF(v); /* See Tktt_New() */
+	if (res == NULL) {
+		errorInCmd = 1;
+		PyErr_Fetch(&excInCmd, &valInCmd, &trbInCmd);
+	}
+	else
+		Py_DECREF(res);
+	LEAVE_PYTHON
+}
+static PyObject *
+Tkapp_CreateTimerHandler(PyObject *self, PyObject *args)
+{
+	int milliseconds;
+	PyObject *func;
+	TkttObject *v;
+	if (!PyArg_ParseTuple(args, "iO:createtimerhandler",
+			      &milliseconds, &func))
+		return NULL;
+	if (!PyCallable_Check(func)) {
+		PyErr_SetString(PyExc_TypeError, "bad argument list");
+		return NULL;
+	}
+#ifdef WITH_THREAD
+	if (!self && !tcl_lock) {
+		/* We don't have the Tcl lock since Tcl is threaded. */
+		PyErr_SetString(PyExc_RuntimeError,
+				"_tkinter.createtimerhandler not supported "
+				"for threaded Tcl");
+		return NULL;
+	}
+#endif
+	if (self) {
+		CHECK_TCL_APPARTMENT;
+	}
+	v = Tktt_New(func);
+	if (v) {
+		v->token = Tcl_CreateTimerHandler(milliseconds, TimerHandler,
+						  (ClientData)v);
+	}
+	return (PyObject *) v;
+}
+/** Event Loop **/
+static PyObject *
+Tkapp_MainLoop(PyObject *selfptr, PyObject *args)
+{
+	int threshold = 0;
+	TkappObject *self = (TkappObject*)selfptr;
+#ifdef WITH_THREAD
+	PyThreadState *tstate = PyThreadState_Get();
+#endif
+	if (!PyArg_ParseTuple(args, "|i:mainloop", &threshold))
+		return NULL;
+#ifdef WITH_THREAD
+	if (!self && !tcl_lock) {
+		/* We don't have the Tcl lock since Tcl is threaded. */
+		PyErr_SetString(PyExc_RuntimeError,
+				"_tkinter.mainloop not supported "
+				"for threaded Tcl");
+		return NULL;
+	}
+#endif
+	if (self) {
+		CHECK_TCL_APPARTMENT;
+		self->dispatching = 1;
+	}
+	quitMainLoop = 0;
+	while (Tk_GetNumMainWindows() > threshold &&
+	       !quitMainLoop &&
+	       !errorInCmd)
+	{
+		int result;
+#ifdef WITH_THREAD
+		if (self && self->threaded) {
+			/* Allow other Python threads to run. */
+			ENTER_TCL
+			result = Tcl_DoOneEvent(0);
+			LEAVE_TCL
+		}
+		else {
+			Py_BEGIN_ALLOW_THREADS
+			if(tcl_lock)PyThread_acquire_lock(tcl_lock, 1);
+			tcl_tstate = tstate;
+			result = Tcl_DoOneEvent(TCL_DONT_WAIT);
+			tcl_tstate = NULL;
+			if(tcl_lock)PyThread_release_lock(tcl_lock);
+			if (result == 0)
+				Sleep(Tkinter_busywaitinterval);
+			Py_END_ALLOW_THREADS
+		}
+#else
+		result = Tcl_DoOneEvent(0);
+#endif
+		if (PyErr_CheckSignals() != 0) {
+			if (self)
+				self->dispatching = 0;
+			return NULL;
+		}
+		if (result < 0)
+			break;
+	}
+	if (self)
+		self->dispatching = 0;
+	quitMainLoop = 0;
+	if (errorInCmd) {
+		errorInCmd = 0;
+		PyErr_Restore(excInCmd, valInCmd, trbInCmd);
+		excInCmd = valInCmd = trbInCmd = NULL;
+		return NULL;
+	}
+	Py_INCREF(Py_None);
+	return Py_None;
+}
+static PyObject *
+Tkapp_DoOneEvent(PyObject *self, PyObject *args)
+{
+	int flags = 0;
+	int rv;
+	if (!PyArg_ParseTuple(args, "|i:dooneevent", &flags))
+		return NULL;
+	ENTER_TCL
+	rv = Tcl_DoOneEvent(flags);
+	LEAVE_TCL
+	return Py_BuildValue("i", rv);
+}
+static PyObject *
+Tkapp_Quit(PyObject *self, PyObject *args)
+{
+	if (!PyArg_ParseTuple(args, ":quit"))
+		return NULL;
+	quitMainLoop = 1;
+	Py_INCREF(Py_None);
+	return Py_None;
+}
+static PyObject *
+Tkapp_InterpAddr(PyObject *self, PyObject *args)
+{
+	if (!PyArg_ParseTuple(args, ":interpaddr"))
+		return NULL;
+	return PyInt_FromLong((long)Tkapp_Interp(self));
+}
+static PyObject	*
+Tkapp_TkInit(PyObject *self, PyObject *args)
+{
+	static int has_failed;
+	Tcl_Interp *interp = Tkapp_Interp(self);
+	Tk_Window main_window;
+	const char * _tk_exists = NULL;
+	int err;
+	main_window = Tk_MainWindow(interp);
+	/* In all current versions of Tk (including 8.4.13), Tk_Init
+	   deadlocks on the second call when the first call failed.
+	   To avoid the deadlock, we just refuse the second call through
+	   a static variable. */
+	if (has_failed) {
+		PyErr_SetString(Tkinter_TclError,
+				"Calling Tk_Init again after a previous call failed might deadlock");
+		return NULL;
+	}
+	/* We want to guard against calling Tk_Init() multiple times */
+	CHECK_TCL_APPARTMENT;
+	ENTER_TCL
+	err = Tcl_Eval(Tkapp_Interp(self), "info exists	tk_version");
+	ENTER_OVERLAP
+	if (err == TCL_ERROR) {
+		/* This sets an exception, but we cannot return right
+		   away because we need to exit the overlap first. */
+		Tkinter_Error(self);
+	} else {
+		_tk_exists = Tkapp_Result(self);
+	}
+	LEAVE_OVERLAP_TCL
+	if (err == TCL_ERROR) {
+		return NULL;
+	}
+	if (_tk_exists == NULL || strcmp(_tk_exists, "1") != 0)	{
+		if (Tk_Init(interp)	== TCL_ERROR) {
+		        PyErr_SetString(Tkinter_TclError, Tcl_GetStringResult(Tkapp_Interp(self)));
+			has_failed = 1;
+			return NULL;
+		}
+	}
+	Py_INCREF(Py_None);
+	return Py_None;
+}
+static PyObject *
+Tkapp_WantObjects(PyObject *self, PyObject *args)
+{
+	int wantobjects = -1;
+	if (!PyArg_ParseTuple(args, "|i:wantobjects", &wantobjects))
+		return NULL;
+	if (wantobjects == -1)
+		return PyBool_FromLong(((TkappObject*)self)->wantobjects);
+	((TkappObject*)self)->wantobjects = wantobjects;
+	Py_INCREF(Py_None);
+	return Py_None;
+}
+static PyObject *
+Tkapp_WillDispatch(PyObject *self, PyObject *args)
+{
+	((TkappObject*)self)->dispatching = 1;
+	Py_INCREF(Py_None);
+	return Py_None;
+}
+/**** Tkapp Method List ****/
+static PyMethodDef Tkapp_methods[] =
+{
+	{"willdispatch",       Tkapp_WillDispatch, METH_NOARGS},
+	{"wantobjects",	       Tkapp_WantObjects, METH_VARARGS},
+	{"call", 	       Tkapp_Call, METH_VARARGS},
+	{"globalcall", 	       Tkapp_GlobalCall, METH_VARARGS},
+	{"eval", 	       Tkapp_Eval, METH_VARARGS},
+	{"globaleval", 	       Tkapp_GlobalEval, METH_VARARGS},
+	{"evalfile", 	       Tkapp_EvalFile, METH_VARARGS},
+	{"record", 	       Tkapp_Record, METH_VARARGS},
+	{"adderrorinfo",       Tkapp_AddErrorInfo, METH_VARARGS},
+	{"setvar", 	       Tkapp_SetVar, METH_VARARGS},
+	{"globalsetvar",       Tkapp_GlobalSetVar, METH_VARARGS},
+	{"getvar", 	       Tkapp_GetVar, METH_VARARGS},
+	{"globalgetvar",       Tkapp_GlobalGetVar, METH_VARARGS},
+	{"unsetvar", 	       Tkapp_UnsetVar, METH_VARARGS},
+	{"globalunsetvar",     Tkapp_GlobalUnsetVar, METH_VARARGS},
+	{"getint", 	       Tkapp_GetInt, METH_VARARGS},
+	{"getdouble", 	       Tkapp_GetDouble, METH_VARARGS},
+	{"getboolean", 	       Tkapp_GetBoolean, METH_VARARGS},
+	{"exprstring", 	       Tkapp_ExprString, METH_VARARGS},
+	{"exprlong", 	       Tkapp_ExprLong, METH_VARARGS},
+	{"exprdouble", 	       Tkapp_ExprDouble, METH_VARARGS},
+	{"exprboolean",        Tkapp_ExprBoolean, METH_VARARGS},
+	{"splitlist", 	       Tkapp_SplitList, METH_VARARGS},
+	{"split", 	       Tkapp_Split, METH_VARARGS},
+	{"merge", 	       Tkapp_Merge, METH_VARARGS},
+	{"createcommand",      Tkapp_CreateCommand, METH_VARARGS},
+	{"deletecommand",      Tkapp_DeleteCommand, METH_VARARGS},
+#ifdef HAVE_CREATEFILEHANDLER
+	{"createfilehandler",  Tkapp_CreateFileHandler, METH_VARARGS},
+	{"deletefilehandler",  Tkapp_DeleteFileHandler, METH_VARARGS},
+#endif
+	{"createtimerhandler", Tkapp_CreateTimerHandler, METH_VARARGS},
+	{"mainloop", 	       Tkapp_MainLoop, METH_VARARGS},
+	{"dooneevent", 	       Tkapp_DoOneEvent, METH_VARARGS},
+	{"quit", 	       Tkapp_Quit, METH_VARARGS},
+	{"interpaddr",         Tkapp_InterpAddr, METH_VARARGS},
+	{"loadtk",	       Tkapp_TkInit, METH_NOARGS},
+	{NULL, 		       NULL}
+};
+/**** Tkapp Type Methods ****/
+static void
+Tkapp_Dealloc(PyObject *self)
+{
+	/*CHECK_TCL_APPARTMENT;*/
+	ENTER_TCL
+	Tcl_DeleteInterp(Tkapp_Interp(self));
+	LEAVE_TCL
+	PyObject_Del(self);
+	DisableEventHook();
+}
+static PyObject *
+Tkapp_GetAttr(PyObject *self, char *name)
+{
+	return Py_FindMethod(Tkapp_methods, self, name);
+}
+static PyTypeObject Tkapp_Type =
+{
+	PyVarObject_HEAD_INIT(NULL, 0)
+	"tkapp",			     /*tp_name */
+	sizeof(TkappObject),		     /*tp_basicsize */
+	0,				     /*tp_itemsize */
+	Tkapp_Dealloc,			     /*tp_dealloc */
+	0,				     /*tp_print */
+	Tkapp_GetAttr,			     /*tp_getattr */
+	0,				     /*tp_setattr */
+	0,				     /*tp_compare */
+	0,				     /*tp_repr */
+	0,				     /*tp_as_number */
+	0,				     /*tp_as_sequence */
+	0,				     /*tp_as_mapping */
+	0,				     /*tp_hash */
+};
+/**** Tkinter Module ****/
+typedef struct {
+	PyObject* tuple;
+	int size; /* current size */
+	int maxsize; /* allocated size */
+} FlattenContext;
+static int
+_bump(FlattenContext* context, int size)
+{
+	/* expand tuple to hold (at least) size new items.
+	   return true if successful, false if an exception was raised */
+	int maxsize = context->maxsize * 2;
+	if (maxsize < context->size + size)
+		maxsize = context->size + size;
+	context->maxsize = maxsize;
+	return _PyTuple_Resize(&context->tuple, maxsize) >= 0;
+}
+static int
+_flatten1(FlattenContext* context, PyObject* item, int depth)
+{
+	/* add tuple or list to argument tuple (recursively) */
+	int i, size;
+	if (depth > 1000) {
+		PyErr_SetString(PyExc_ValueError,
+				"nesting too deep in _flatten");
+		return 0;
+	} else if (PyList_Check(item)) {
+		size = PyList_GET_SIZE(item);
+		/* preallocate (assume no nesting) */
+		if (context->size + size > context->maxsize &&
+		    !_bump(context, size))
+			return 0;
+		/* copy items to output tuple */
+		for (i = 0; i < size; i++) {
+			PyObject *o = PyList_GET_ITEM(item, i);
+			if (PyList_Check(o) || PyTuple_Check(o)) {
+				if (!_flatten1(context, o, depth + 1))
+					return 0;
+			} else if (o != Py_None) {
+				if (context->size + 1 > context->maxsize &&
+				    !_bump(context, 1))
+					return 0;
+				Py_INCREF(o);
+				PyTuple_SET_ITEM(context->tuple,
+						 context->size++, o);
+			}
+		}
+	} else if (PyTuple_Check(item)) {
+		/* same, for tuples */
+		size = PyTuple_GET_SIZE(item);
+		if (context->size + size > context->maxsize &&
+		    !_bump(context, size))
+			return 0;
+		for (i = 0; i < size; i++) {
+			PyObject *o = PyTuple_GET_ITEM(item, i);
+			if (PyList_Check(o) || PyTuple_Check(o)) {
+				if (!_flatten1(context, o, depth + 1))
+					return 0;
+			} else if (o != Py_None) {
+				if (context->size + 1 > context->maxsize &&
+				    !_bump(context, 1))
+					return 0;
+				Py_INCREF(o);
+				PyTuple_SET_ITEM(context->tuple,
+						 context->size++, o);
+			}
+		}
+	} else {
+		PyErr_SetString(PyExc_TypeError, "argument must be sequence");
+		return 0;
+	}
+	return 1;
+}
+static PyObject *
+Tkinter_Flatten(PyObject* self, PyObject* args)
+{
+	FlattenContext context;
+	PyObject* item;
+	if (!PyArg_ParseTuple(args, "O:_flatten", &item))
+		return NULL;
+	context.maxsize = PySequence_Size(item);
+	if (context.maxsize <= 0)
+		return PyTuple_New(0);
+	context.tuple = PyTuple_New(context.maxsize);
+	if (!context.tuple)
+		return NULL;
+	context.size = 0;
+	if (!_flatten1(&context, item,0))
+		return NULL;
+	if (_PyTuple_Resize(&context.tuple, context.size))
+		return NULL;
+	return context.tuple;
+}
+static PyObject *
+Tkinter_Create(PyObject *self, PyObject *args)
+{
+	char *screenName = NULL;
+	char *baseName = NULL;
+	char *className = NULL;
+	int interactive = 0;
+	int wantobjects = 0;
+	int wantTk = 1;	/* If false, then Tk_Init() doesn't get	called */
+	int sync = 0; /* pass -sync to wish */
+	char *use = NULL; /* pass -use to wish */
+	baseName = strrchr(Py_GetProgramName(), '/');
+	if (baseName != NULL)
+		baseName++;
+	else
+		baseName = Py_GetProgramName();
+	className = "Tk";
+	if (!PyArg_ParseTuple(args, "|zssiiiiz:create",
+			      &screenName, &baseName, &className,
+			      &interactive, &wantobjects, &wantTk,
+			      &sync, &use))
+		return NULL;
+	return (PyObject *) Tkapp_New(screenName, baseName, className,
+				      interactive, wantobjects,	wantTk,
+				      sync, use);
+}
+static PyObject *
+Tkinter_setbusywaitinterval(PyObject *self, PyObject *args)
+{
+	int new_val;
+	if (!PyArg_ParseTuple(args, "i:setbusywaitinterval", &new_val))
+		return NULL;
+	if (new_val < 0) {
+		PyErr_SetString(PyExc_ValueError,
+				"busywaitinterval must be >= 0");
+		return NULL;
+	}
+	Tkinter_busywaitinterval = new_val;
+	Py_INCREF(Py_None);
+	return Py_None;
+}
+static char setbusywaitinterval_doc[] =
+"setbusywaitinterval(n) -> None\n\
+\n\
+Set the busy-wait interval in milliseconds between successive\n\
+calls to Tcl_DoOneEvent in a threaded Python interpreter.\n\
+It should be set to a divisor of the maximum time between\n\
+frames in an animation.";
+static PyObject *
+Tkinter_getbusywaitinterval(PyObject *self, PyObject *args)
+{
+return PyInt_FromLong(Tkinter_busywaitinterval);
+}
+static char getbusywaitinterval_doc[] =
+"getbusywaitinterval() -> int\n\
+\n\
+Return the current busy-wait interval between successive\n\
+calls to Tcl_DoOneEvent in a threaded Python interpreter.";
+static PyMethodDef moduleMethods[] =
+{
+	{"_flatten",           Tkinter_Flatten, METH_VARARGS},
+	{"create",             Tkinter_Create, METH_VARARGS},
+#ifdef HAVE_CREATEFILEHANDLER
+	{"createfilehandler",  Tkapp_CreateFileHandler, METH_VARARGS},
+	{"deletefilehandler",  Tkapp_DeleteFileHandler, METH_VARARGS},
+#endif
+	{"createtimerhandler", Tkapp_CreateTimerHandler, METH_VARARGS},
+	{"mainloop",           Tkapp_MainLoop, METH_VARARGS},
+	{"dooneevent",         Tkapp_DoOneEvent, METH_VARARGS},
+	{"quit",               Tkapp_Quit, METH_VARARGS},
+	{"setbusywaitinterval",Tkinter_setbusywaitinterval, METH_VARARGS,
+	                       setbusywaitinterval_doc},
+	{"getbusywaitinterval",(PyCFunction)Tkinter_getbusywaitinterval,
+	                       METH_NOARGS, getbusywaitinterval_doc},
+	{NULL,                 NULL}
+};
+#ifdef WAIT_FOR_STDIN
+static int stdin_ready = 0;
+#ifndef MS_WINDOWS
+static void
+MyFileProc(void *clientData, int mask)
+{
+	stdin_ready = 1;
+}
+#endif
+#ifdef WITH_THREAD
+static PyThreadState *event_tstate = NULL;
+#endif
+static int
+EventHook(void)
+{
+#ifndef MS_WINDOWS
+	int tfile;
+#endif
+#ifdef WITH_THREAD
+	PyEval_RestoreThread(event_tstate);
+#endif
+	stdin_ready = 0;
+	errorInCmd = 0;
+#ifndef MS_WINDOWS
+	tfile = fileno(stdin);
+	Tcl_CreateFileHandler(tfile, TCL_READABLE, MyFileProc, NULL);
+#endif
+	while (!errorInCmd && !stdin_ready) {
+		int result;
+#ifdef MS_WINDOWS
+		if (_kbhit()) {
+			stdin_ready = 1;
+			break;
+		}
+#endif
+#if defined(WITH_THREAD) || defined(MS_WINDOWS)
+		Py_BEGIN_ALLOW_THREADS
+		if(tcl_lock)PyThread_acquire_lock(tcl_lock, 1);
+		tcl_tstate = event_tstate;
+		result = Tcl_DoOneEvent(TCL_DONT_WAIT);
+		tcl_tstate = NULL;
+		if(tcl_lock)PyThread_release_lock(tcl_lock);
+		if (result == 0)
+			Sleep(Tkinter_busywaitinterval);
+		Py_END_ALLOW_THREADS
+#else
+		result = Tcl_DoOneEvent(0);
+#endif
+		if (result < 0)
+			break;
+	}
+#ifndef MS_WINDOWS
+	Tcl_DeleteFileHandler(tfile);
+#endif
+	if (errorInCmd) {
+		errorInCmd = 0;
+		PyErr_Restore(excInCmd, valInCmd, trbInCmd);
+		excInCmd = valInCmd = trbInCmd = NULL;
+		PyErr_Print();
+	}
+#ifdef WITH_THREAD
+	PyEval_SaveThread();
+#endif
+	return 0;
+}
+#endif
+static void
+EnableEventHook(void)
+{
+#ifdef WAIT_FOR_STDIN
+	if (PyOS_InputHook == NULL) {
+#ifdef WITH_THREAD
+		event_tstate = PyThreadState_Get();
+#endif
+		PyOS_InputHook = EventHook;
+	}
+#endif
+}
+static void
+DisableEventHook(void)
+{
+#ifdef WAIT_FOR_STDIN
+	if (Tk_GetNumMainWindows() == 0 && PyOS_InputHook == EventHook) {
+		PyOS_InputHook = NULL;
+	}
+#endif
+}
+/* all errors will be checked in one fell swoop in init_tkinter() */
+static void
+ins_long(PyObject *d, char *name, long val)
+{
+	PyObject *v = PyInt_FromLong(val);
+	if (v) {
+		PyDict_SetItemString(d, name, v);
+		Py_DECREF(v);
+	}
+}
+static void
+ins_string(PyObject *d, char *name, char *val)
+{
+	PyObject *v = PyString_FromString(val);
+	if (v) {
+		PyDict_SetItemString(d, name, v);
+		Py_DECREF(v);
+	}
+}
+PyMODINIT_FUNC
+init_tkinter(void)
+{
+	PyObject *m, *d;
+	Py_TYPE(&Tkapp_Type) = &PyType_Type;
+#ifdef WITH_THREAD
+	tcl_lock = PyThread_allocate_lock();
+#endif
+	m = Py_InitModule("_tkinter", moduleMethods);
+	if (m == NULL)
+		return;
+	d = PyModule_GetDict(m);
+	Tkinter_TclError = PyErr_NewException("_tkinter.TclError", NULL, NULL);
+	PyDict_SetItemString(d, "TclError", Tkinter_TclError);
+	ins_long(d, "READABLE", TCL_READABLE);
+	ins_long(d, "WRITABLE", TCL_WRITABLE);
+	ins_long(d, "EXCEPTION", TCL_EXCEPTION);
+	ins_long(d, "WINDOW_EVENTS", TCL_WINDOW_EVENTS);
+	ins_long(d, "FILE_EVENTS", TCL_FILE_EVENTS);
+	ins_long(d, "TIMER_EVENTS", TCL_TIMER_EVENTS);
+	ins_long(d, "IDLE_EVENTS", TCL_IDLE_EVENTS);
+	ins_long(d, "ALL_EVENTS", TCL_ALL_EVENTS);
+	ins_long(d, "DONT_WAIT", TCL_DONT_WAIT);
+	ins_string(d, "TK_VERSION", TK_VERSION);
+	ins_string(d, "TCL_VERSION", TCL_VERSION);
+	PyDict_SetItemString(d, "TkappType", (PyObject *)&Tkapp_Type);
+	Py_TYPE(&Tktt_Type) = &PyType_Type;
+	PyDict_SetItemString(d, "TkttType", (PyObject *)&Tktt_Type);
+	Py_TYPE(&PyTclObject_Type) = &PyType_Type;
+	PyDict_SetItemString(d, "Tcl_Obj", (PyObject *)&PyTclObject_Type);
+#ifdef TK_AQUA
+	/* Tk_MacOSXSetupTkNotifier must be called before Tcl's subsystems
+	 * start waking up.  Note that Tcl_FindExecutable will do this, this
+	 * code must be above it! The original warning from
+	 * tkMacOSXAppInit.c is copied below.
+	 *
+	 * NB - You have to swap in the Tk Notifier BEFORE you start up the
+	 * Tcl interpreter for now.  It probably should work to do this
+	 * in the other order, but for now it doesn't seem to.
+	 *
+	 */
+	Tk_MacOSXSetupTkNotifier();
+#endif
+	/* This helps the dynamic loader; in Unicode aware Tcl versions
+	   it also helps Tcl find its encodings. */
+	Tcl_FindExecutable(Py_GetProgramName());
+	if (PyErr_Occurred())
+		return;
+#if 0
+	/* This was not a good idea; through <Destroy> bindings,
+	   Tcl_Finalize() may invoke Python code but at that point the
+	   interpreter and thread state have already been destroyed! */
+	Py_AtExit(Tcl_Finalize);
+#endif
+}