diff --git a/Demo/tix/grid.py b/Demo/tix/grid.py
index 79b8886..4268f07 100644
--- a/Demo/tix/grid.py
+++ b/Demo/tix/grid.py
@@ -1,5 +1,5 @@
 ###
-import Tix as tk
+import tkinter.tix as tk
 from pprint import pprint
 
 r= tk.Tk()
diff --git a/Demo/tix/samples/Balloon.py b/Demo/tix/samples/Balloon.py
index 2295905..bc25a2e 100755
--- a/Demo/tix/samples/Balloon.py
+++ b/Demo/tix/samples/Balloon.py
@@ -15,7 +15,7 @@
 # Your can display the help message in a "balloon" and a status bar widget.
 #
 
-import Tix
+import tkinter.tix
 
 TCL_ALL_EVENTS          = 0
 
@@ -32,20 +32,20 @@
         z = w.winfo_toplevel()
         z.wm_protocol("WM_DELETE_WINDOW", lambda self=self: self.quitcmd())
 
-        status = Tix.Label(w, width=40, relief=Tix.SUNKEN, bd=1)
-        status.pack(side=Tix.BOTTOM, fill=Tix.Y, padx=2, pady=1)
+        status = tkinter.tix.Label(w, width=40, relief=tkinter.tix.SUNKEN, bd=1)
+        status.pack(side=tkinter.tix.BOTTOM, fill=tkinter.tix.Y, padx=2, pady=1)
 
         # Create two mysterious widgets that need balloon help
-        button1 = Tix.Button(w, text='Something Unexpected',
+        button1 = tkinter.tix.Button(w, text='Something Unexpected',
                              command=self.quitcmd)
-        button2 = Tix.Button(w, text='Something Else Unexpected')
+        button2 = tkinter.tix.Button(w, text='Something Else Unexpected')
         button2['command'] = lambda w=button2: w.destroy()
-        button1.pack(side=Tix.TOP, expand=1)
-        button2.pack(side=Tix.TOP, expand=1)
+        button1.pack(side=tkinter.tix.TOP, expand=1)
+        button2.pack(side=tkinter.tix.TOP, expand=1)
 
         # Create the balloon widget and associate it with the widgets that we want
         # to provide tips for:
-        b = Tix.Balloon(w, statusbar=status)
+        b = tkinter.tix.Balloon(w, statusbar=status)
 
         b.bind_widget(button1, balloonmsg='Close Window',
                       statusmsg='Press this button to close this window')
@@ -64,5 +64,5 @@
         self.root.destroy()
 
 if __name__ == '__main__':
-    root = Tix.Tk()
+    root = tkinter.tix.Tk()
     RunSample(root)
diff --git a/Demo/tix/samples/BtnBox.py b/Demo/tix/samples/BtnBox.py
index af2a2a8..3b9ee4b 100755
--- a/Demo/tix/samples/BtnBox.py
+++ b/Demo/tix/samples/BtnBox.py
@@ -15,13 +15,13 @@
 # for example.
 #
 
-import Tix
+import tkinter.tix
 
 def RunSample(w):
     # Create the label on the top of the dialog box
     #
-    top = Tix.Label(w, padx=20, pady=10, bd=1, relief=Tix.RAISED,
-                    anchor=Tix.CENTER, text='This dialog box is\n a demonstration of the\n tixButtonBox widget')
+    top = tkinter.tix.Label(w, padx=20, pady=10, bd=1, relief=tkinter.tix.RAISED,
+                    anchor=tkinter.tix.CENTER, text='This dialog box is\n a demonstration of the\n tixButtonBox widget')
 
     # Create the button box and add a few buttons in it. Set the
     # -width of all the buttons to the same value so that they
@@ -30,15 +30,15 @@
     # Note that the -text, -underline, -command and -width options are all
     # standard options of the button widgets.
     #
-    box = Tix.ButtonBox(w, orientation=Tix.HORIZONTAL)
+    box = tkinter.tix.ButtonBox(w, orientation=tkinter.tix.HORIZONTAL)
     box.add('ok', text='OK', underline=0, width=5,
             command=lambda w=w: w.destroy())
     box.add('close', text='Cancel', underline=0, width=5,
             command=lambda w=w: w.destroy())
-    box.pack(side=Tix.BOTTOM, fill=Tix.X)
-    top.pack(side=Tix.TOP, fill=Tix.BOTH, expand=1)
+    box.pack(side=tkinter.tix.BOTTOM, fill=tkinter.tix.X)
+    top.pack(side=tkinter.tix.TOP, fill=tkinter.tix.BOTH, expand=1)
 
 if __name__ == '__main__':
-    root = Tix.Tk()
+    root = tkinter.tix.Tk()
     RunSample(root)
     root.mainloop()
diff --git a/Demo/tix/samples/CmpImg.py b/Demo/tix/samples/CmpImg.py
index 4720a10..ad49181 100755
--- a/Demo/tix/samples/CmpImg.py
+++ b/Demo/tix/samples/CmpImg.py
@@ -15,7 +15,7 @@
 # buttons
 #
 
-import Tix
+import tkinter.tix
 
 network_pixmap = """/* XPM */
 static char * netw_xpm[] = {
@@ -144,15 +144,15 @@
 """
 
 def RunSample(w):
-    w.img0 = Tix.Image('pixmap', data=network_pixmap)
+    w.img0 = tkinter.tix.Image('pixmap', data=network_pixmap)
     if not w.img0:
-        w.img0 = Tix.Image('bitmap', data=network_bitmap)
-    w.img1 = Tix.Image('pixmap', data=hard_disk_pixmap)
+        w.img0 = tkinter.tix.Image('bitmap', data=network_bitmap)
+    w.img1 = tkinter.tix.Image('pixmap', data=hard_disk_pixmap)
     if not w.img0:
-        w.img1 = Tix.Image('bitmap', data=hard_disk_bitmap)
+        w.img1 = tkinter.tix.Image('bitmap', data=hard_disk_bitmap)
 
-    hdd = Tix.Button(w, padx=4, pady=1, width=120)
-    net = Tix.Button(w, padx=4, pady=1, width=120)
+    hdd = tkinter.tix.Button(w, padx=4, pady=1, width=120)
+    net = tkinter.tix.Button(w, padx=4, pady=1, width=120)
 
     # Create the first image: we create a line, then put a string,
     # a space and a image into this line, from left to right.
@@ -160,7 +160,7 @@
     # individual items
     #
     # The tk.calls should be methods in Tix ...
-    w.hdd_img = Tix.Image('compound', window=hdd)
+    w.hdd_img = tkinter.tix.Image('compound', window=hdd)
     w.hdd_img.tk.call(str(w.hdd_img), 'add', 'line')
     w.hdd_img.tk.call(str(w.hdd_img), 'add', 'text', '-text', 'Hard Disk',
                     '-underline', '0')
@@ -172,7 +172,7 @@
     hdd['image'] = w.hdd_img
 
     # Next button
-    w.net_img = Tix.Image('compound', window=net)
+    w.net_img = tkinter.tix.Image('compound', window=net)
     w.net_img.tk.call(str(w.net_img), 'add', 'line')
     w.net_img.tk.call(str(w.net_img), 'add', 'text', '-text', 'Network',
                     '-underline', '0')
@@ -183,14 +183,14 @@
     #
     net['image'] = w.net_img
 
-    close = Tix.Button(w, pady=1, text='Close',
+    close = tkinter.tix.Button(w, pady=1, text='Close',
                        command=lambda w=w: w.destroy())
 
-    hdd.pack(side=Tix.LEFT, padx=10, pady=10, fill=Tix.Y, expand=1)
-    net.pack(side=Tix.LEFT, padx=10, pady=10, fill=Tix.Y, expand=1)
-    close.pack(side=Tix.LEFT, padx=10, pady=10, fill=Tix.Y, expand=1)
+    hdd.pack(side=tkinter.tix.LEFT, padx=10, pady=10, fill=tkinter.tix.Y, expand=1)
+    net.pack(side=tkinter.tix.LEFT, padx=10, pady=10, fill=tkinter.tix.Y, expand=1)
+    close.pack(side=tkinter.tix.LEFT, padx=10, pady=10, fill=tkinter.tix.Y, expand=1)
 
 if __name__ == '__main__':
-    root = Tix.Tk()
+    root = tkinter.tix.Tk()
     RunSample(root)
     root.mainloop()
diff --git a/Demo/tix/samples/ComboBox.py b/Demo/tix/samples/ComboBox.py
index 9140987..80d78f2 100755
--- a/Demo/tix/samples/ComboBox.py
+++ b/Demo/tix/samples/ComboBox.py
@@ -13,15 +13,15 @@
 # This file demonstrates the use of the tixComboBox widget, which is close
 # to the MS Window Combo Box control.
 #
-import Tix
+import tkinter.tix
 
 def RunSample(w):
     global demo_month, demo_year
 
-    top = Tix.Frame(w, bd=1, relief=Tix.RAISED)
+    top = tkinter.tix.Frame(w, bd=1, relief=tkinter.tix.RAISED)
 
-    demo_month = Tix.StringVar()
-    demo_year = Tix.StringVar()
+    demo_month = tkinter.tix.StringVar()
+    demo_year = tkinter.tix.StringVar()
 
     # $w.top.a is a drop-down combo box. It is not editable -- who wants
     # to invent new months?
@@ -30,7 +30,7 @@
     # [Hint] We set the label.width subwidget option of both comboboxes to
     #        be 10 so that their labels appear to be aligned.
     #
-    a = Tix.ComboBox(top, label="Month: ", dropdown=1,
+    a = tkinter.tix.ComboBox(top, label="Month: ", dropdown=1,
         command=select_month, editable=0, variable=demo_month,
         options='listbox.height 6 label.width 10 label.anchor e')
 
@@ -43,31 +43,31 @@
     # [Hint] Notice that you should use padY (the NAME of the option) and not
     #        pady (the SWITCH of the option).
     #
-    b = Tix.ComboBox(top, label="Year: ", dropdown=0,
+    b = tkinter.tix.ComboBox(top, label="Year: ", dropdown=0,
         command=select_year, editable=1, variable=demo_year,
         options='listbox.height 4 label.padY 5 label.width 10 label.anchor ne')
 
-    a.pack(side=Tix.TOP, anchor=Tix.W)
-    b.pack(side=Tix.TOP, anchor=Tix.W)
+    a.pack(side=tkinter.tix.TOP, anchor=tkinter.tix.W)
+    b.pack(side=tkinter.tix.TOP, anchor=tkinter.tix.W)
 
-    a.insert(Tix.END, 'January')
-    a.insert(Tix.END, 'February')
-    a.insert(Tix.END, 'March')
-    a.insert(Tix.END, 'April')
-    a.insert(Tix.END, 'May')
-    a.insert(Tix.END, 'June')
-    a.insert(Tix.END, 'July')
-    a.insert(Tix.END, 'August')
-    a.insert(Tix.END, 'September')
-    a.insert(Tix.END, 'October')
-    a.insert(Tix.END, 'November')
-    a.insert(Tix.END, 'December')
+    a.insert(tkinter.tix.END, 'January')
+    a.insert(tkinter.tix.END, 'February')
+    a.insert(tkinter.tix.END, 'March')
+    a.insert(tkinter.tix.END, 'April')
+    a.insert(tkinter.tix.END, 'May')
+    a.insert(tkinter.tix.END, 'June')
+    a.insert(tkinter.tix.END, 'July')
+    a.insert(tkinter.tix.END, 'August')
+    a.insert(tkinter.tix.END, 'September')
+    a.insert(tkinter.tix.END, 'October')
+    a.insert(tkinter.tix.END, 'November')
+    a.insert(tkinter.tix.END, 'December')
 
-    b.insert(Tix.END, '1992')
-    b.insert(Tix.END, '1993')
-    b.insert(Tix.END, '1994')
-    b.insert(Tix.END, '1995')
-    b.insert(Tix.END, '1996')
+    b.insert(tkinter.tix.END, '1992')
+    b.insert(tkinter.tix.END, '1993')
+    b.insert(tkinter.tix.END, '1994')
+    b.insert(tkinter.tix.END, '1995')
+    b.insert(tkinter.tix.END, '1996')
 
     # Use "tixSetSilent" to set the values of the combo box if you
     # don't want your -command procedures (cbx:select_month and
@@ -76,13 +76,13 @@
     a.set_silent('January')
     b.set_silent('1995')
 
-    box = Tix.ButtonBox(w, orientation=Tix.HORIZONTAL)
+    box = tkinter.tix.ButtonBox(w, orientation=tkinter.tix.HORIZONTAL)
     box.add('ok', text='Ok', underline=0, width=6,
             command=lambda w=w: ok_command(w))
     box.add('cancel', text='Cancel', underline=0, width=6,
             command=lambda w=w: w.destroy())
-    box.pack(side=Tix.BOTTOM, fill=Tix.X)
-    top.pack(side=Tix.TOP, fill=Tix.BOTH, expand=1)
+    box.pack(side=tkinter.tix.BOTTOM, fill=tkinter.tix.X)
+    top.pack(side=tkinter.tix.TOP, fill=tkinter.tix.BOTH, expand=1)
 
 def select_month(event=None):
     # tixDemo:Status "Month = %s" % demo_month.get()
@@ -97,6 +97,6 @@
     w.destroy()
 
 if __name__ == '__main__':
-    root = Tix.Tk()
+    root = tkinter.tix.Tk()
     RunSample(root)
     root.mainloop()
diff --git a/Demo/tix/samples/Control.py b/Demo/tix/samples/Control.py
index 3a344c1..fbc5e64 100755
--- a/Demo/tix/samples/Control.py
+++ b/Demo/tix/samples/Control.py
@@ -18,7 +18,7 @@
 # integer values; one lets you select floating point values and the last
 # one lets you select a few names.
 
-import Tix
+import tkinter.tix
 
 TCL_ALL_EVENTS          = 0
 
@@ -34,14 +34,14 @@
 
         global demo_maker, demo_thrust, demo_num_engines
 
-        demo_maker = Tix.StringVar()
-        demo_thrust = Tix.DoubleVar()
-        demo_num_engines = Tix.IntVar()
+        demo_maker = tkinter.tix.StringVar()
+        demo_thrust = tkinter.tix.DoubleVar()
+        demo_num_engines = tkinter.tix.IntVar()
         demo_maker.set('P&W')
         demo_thrust.set(20000.0)
         demo_num_engines.set(2)
 
-        top = Tix.Frame(w, bd=1, relief=Tix.RAISED)
+        top = tkinter.tix.Frame(w, bd=1, relief=tkinter.tix.RAISED)
 
         # $w.top.a allows only integer values
         #
@@ -49,16 +49,16 @@
         # [Hint] We set the label.width subwidget option of the Controls to
         #        be 16 so that their labels appear to be aligned.
         #
-        a = Tix.Control(top, label='Number of Engines: ', integer=1,
+        a = tkinter.tix.Control(top, label='Number of Engines: ', integer=1,
                         variable=demo_num_engines, min=1, max=4,
                         options='entry.width 10 label.width 20 label.anchor e')
 
-        b = Tix.Control(top, label='Thrust: ', integer=0,
+        b = tkinter.tix.Control(top, label='Thrust: ', integer=0,
                         min='10000.0', max='60000.0', step=500,
                         variable=demo_thrust,
                         options='entry.width 10 label.width 20 label.anchor e')
 
-        c = Tix.Control(top, label='Engine Maker: ', value='P&W',
+        c = tkinter.tix.Control(top, label='Engine Maker: ', value='P&W',
                         variable=demo_maker,
                         options='entry.width 10 label.width 20 label.anchor e')
 
@@ -68,17 +68,17 @@
         c['decrcmd'] = lambda w=c: adjust_maker(w, -1)
         c['validatecmd'] = lambda w=c: validate_maker(w)
 
-        a.pack(side=Tix.TOP, anchor=Tix.W)
-        b.pack(side=Tix.TOP, anchor=Tix.W)
-        c.pack(side=Tix.TOP, anchor=Tix.W)
+        a.pack(side=tkinter.tix.TOP, anchor=tkinter.tix.W)
+        b.pack(side=tkinter.tix.TOP, anchor=tkinter.tix.W)
+        c.pack(side=tkinter.tix.TOP, anchor=tkinter.tix.W)
 
-        box = Tix.ButtonBox(w, orientation=Tix.HORIZONTAL)
+        box = tkinter.tix.ButtonBox(w, orientation=tkinter.tix.HORIZONTAL)
         box.add('ok', text='Ok', underline=0, width=6,
                 command=self.okcmd)
         box.add('cancel', text='Cancel', underline=0, width=6,
                 command=self.quitcmd)
-        box.pack(side=Tix.BOTTOM, fill=Tix.X)
-        top.pack(side=Tix.TOP, fill=Tix.BOTH, expand=1)
+        box.pack(side=tkinter.tix.BOTTOM, fill=tkinter.tix.X)
+        top.pack(side=tkinter.tix.TOP, fill=tkinter.tix.BOTH, expand=1)
 
     def okcmd (self):
         # tixDemo:Status "Selected %d of %s engines each of thrust %d", (demo_num_engines.get(), demo_maker.get(), demo_thrust.get())
@@ -118,5 +118,5 @@
     return maker_list[i]
 
 if __name__ == '__main__':
-    root = Tix.Tk()
+    root = tkinter.tix.Tk()
     RunSample(root)
diff --git a/Demo/tix/samples/DirList.py b/Demo/tix/samples/DirList.py
index 5fd8c0d..6d28ca3 100755
--- a/Demo/tix/samples/DirList.py
+++ b/Demo/tix/samples/DirList.py
@@ -16,8 +16,8 @@
 # installation directory for an application.
 #
 
-import Tix, os, copy
-from Tkconstants import *
+import tkinter.tix, os, copy
+from tkinter.constants import *
 
 TCL_ALL_EVENTS          = 0
 
@@ -40,25 +40,25 @@
         # bg = root.tk.eval('tix option get bg')
         # adding bg=bg crashes Windows pythonw tk8.3.3 Python 2.1.0
 
-        top = Tix.Frame( w, relief=RAISED, bd=1)
+        top = tkinter.tix.Frame( w, relief=RAISED, bd=1)
 
         # Create the DirList widget. By default it will show the current
         # directory
         #
         #
-        top.dir = Tix.DirList(top)
+        top.dir = tkinter.tix.DirList(top)
         top.dir.hlist['width'] = 40
 
         # When the user presses the ".." button, the selected directory
         # is "transferred" into the entry widget
         #
-        top.btn = Tix.Button(top, text = "  >>  ", pady = 0)
+        top.btn = tkinter.tix.Button(top, text = "  >>  ", pady = 0)
 
         # We use a LabelEntry to hold the installation directory. The user
         # can choose from the DirList widget, or he can type in the directory
         # manually
         #
-        top.ent = Tix.LabelEntry(top, label="Installation Directory:",
+        top.ent = tkinter.tix.LabelEntry(top, label="Installation Directory:",
                                   labelside = 'top',
                                   options = '''
                                   entry.width 40
@@ -85,7 +85,7 @@
 
         # Use a ButtonBox to hold the buttons.
         #
-        box = Tix.ButtonBox (w, orientation='horizontal')
+        box = tkinter.tix.ButtonBox (w, orientation='horizontal')
         box.add ('ok', text='Ok', underline=0, width=6,
                      command = lambda self=self: self.okcmd () )
         box.add ('cancel', text='Cancel', underline=0, width=6,
@@ -118,14 +118,14 @@
 # outside of the main demo program "tixwidgets.py".
 #
 if __name__== '__main__' :
-    import tkMessageBox, traceback
+    import tkinter.messagebox, traceback
 
     try:
-        root=Tix.Tk()
+        root=tkinter.tix.Tk()
         RunSample(root)
     except:
         t, v, tb = sys.exc_info()
         text = "Error running the demo script:\n"
         for line in traceback.format_exception(t,v,tb):
             text = text + line + '\n'
-            d = tkMessageBox.showerror ( 'Tix Demo Error', text)
+            d = tkinter.messagebox.showerror ( 'Tix Demo Error', text)
diff --git a/Demo/tix/samples/DirTree.py b/Demo/tix/samples/DirTree.py
index 2e4fe0b..5411ded 100755
--- a/Demo/tix/samples/DirTree.py
+++ b/Demo/tix/samples/DirTree.py
@@ -16,8 +16,8 @@
 # installation directory for an application.
 #
 
-import Tix, os, copy
-from Tkconstants import *
+import tkinter.tix, os, copy
+from tkinter.constants import *
 
 TCL_ALL_EVENTS          = 0
 
@@ -40,25 +40,25 @@
         # bg = root.tk.eval('tix option get bg')
         # adding bg=bg crashes Windows pythonw tk8.3.3 Python 2.1.0
 
-        top = Tix.Frame( w, relief=RAISED, bd=1)
+        top = tkinter.tix.Frame( w, relief=RAISED, bd=1)
 
         # Create the DirTree widget. By default it will show the current
         # directory
         #
         #
-        top.dir = Tix.DirTree(top)
+        top.dir = tkinter.tix.DirTree(top)
         top.dir.hlist['width'] = 40
 
         # When the user presses the ".." button, the selected directory
         # is "transferred" into the entry widget
         #
-        top.btn = Tix.Button(top, text = "  >>  ", pady = 0)
+        top.btn = tkinter.tix.Button(top, text = "  >>  ", pady = 0)
 
         # We use a LabelEntry to hold the installation directory. The user
         # can choose from the DirTree widget, or he can type in the directory
         # manually
         #
-        top.ent = Tix.LabelEntry(top, label="Installation Directory:",
+        top.ent = tkinter.tix.LabelEntry(top, label="Installation Directory:",
                                   labelside = 'top',
                                   options = '''
                                   entry.width 40
@@ -79,7 +79,7 @@
 
         # Use a ButtonBox to hold the buttons.
         #
-        box = Tix.ButtonBox (w, orientation='horizontal')
+        box = tkinter.tix.ButtonBox (w, orientation='horizontal')
         box.add ('ok', text='Ok', underline=0, width=6,
                      command = lambda self=self: self.okcmd () )
         box.add ('cancel', text='Cancel', underline=0, width=6,
@@ -113,5 +113,5 @@
 # outside of the main demo program "tixwidgets.py".
 #
 if __name__== '__main__' :
-    root=Tix.Tk()
+    root=tkinter.tix.Tk()
     RunSample(root)
diff --git a/Demo/tix/samples/NoteBook.py b/Demo/tix/samples/NoteBook.py
index 1e0da3e..d8b5fa8 100755
--- a/Demo/tix/samples/NoteBook.py
+++ b/Demo/tix/samples/NoteBook.py
@@ -13,7 +13,7 @@
 # This file demonstrates the use of the tixNoteBook widget, which allows
 # you to lay out your interface using a "notebook" metaphore
 #
-import Tix
+import tkinter.tix
 
 def RunSample(w):
     global root
@@ -21,20 +21,20 @@
 
     # We use these options to set the sizes of the subwidgets inside the
     # notebook, so that they are well-aligned on the screen.
-    prefix = Tix.OptionName(w)
+    prefix = tkinter.tix.OptionName(w)
     if prefix:
         prefix = '*'+prefix
     else:
         prefix = ''
     w.option_add(prefix+'*TixControl*entry.width', 10)
     w.option_add(prefix+'*TixControl*label.width', 18)
-    w.option_add(prefix+'*TixControl*label.anchor', Tix.E)
+    w.option_add(prefix+'*TixControl*label.anchor', tkinter.tix.E)
     w.option_add(prefix+'*TixNoteBook*tagPadX', 8)
 
     # Create the notebook widget and set its backpagecolor to gray.
     # Note that the -backpagecolor option belongs to the "nbframe"
     # subwidget.
-    nb = Tix.NoteBook(w, name='nb', ipadx=6, ipady=6)
+    nb = tkinter.tix.NoteBook(w, name='nb', ipadx=6, ipady=6)
     nb['bg'] = 'gray'
     nb.nbframe['backpagecolor'] = 'gray'
 
@@ -45,7 +45,7 @@
     nb.add('hard_disk', label="Hard Disk", underline=0)
     nb.add('network', label="Network", underline=0)
 
-    nb.pack(expand=1, fill=Tix.BOTH, padx=5, pady=5 ,side=Tix.TOP)
+    nb.pack(expand=1, fill=tkinter.tix.BOTH, padx=5, pady=5 ,side=tkinter.tix.TOP)
 
     #----------------------------------------
     # Create the first page
@@ -54,21 +54,21 @@
     # other widgets
     #
     tab=nb.hard_disk
-    f = Tix.Frame(tab)
-    common = Tix.Frame(tab)
+    f = tkinter.tix.Frame(tab)
+    common = tkinter.tix.Frame(tab)
 
-    f.pack(side=Tix.LEFT, padx=2, pady=2, fill=Tix.BOTH, expand=1)
-    common.pack(side=Tix.RIGHT, padx=2, fill=Tix.Y)
+    f.pack(side=tkinter.tix.LEFT, padx=2, pady=2, fill=tkinter.tix.BOTH, expand=1)
+    common.pack(side=tkinter.tix.RIGHT, padx=2, fill=tkinter.tix.Y)
 
-    a = Tix.Control(f, value=12,   label='Access time: ')
-    w = Tix.Control(f, value=400,  label='Write Throughput: ')
-    r = Tix.Control(f, value=400,  label='Read Throughput: ')
-    c = Tix.Control(f, value=1021, label='Capacity: ')
+    a = tkinter.tix.Control(f, value=12,   label='Access time: ')
+    w = tkinter.tix.Control(f, value=400,  label='Write Throughput: ')
+    r = tkinter.tix.Control(f, value=400,  label='Read Throughput: ')
+    c = tkinter.tix.Control(f, value=1021, label='Capacity: ')
 
-    a.pack(side=Tix.TOP, padx=20, pady=2)
-    w.pack(side=Tix.TOP, padx=20, pady=2)
-    r.pack(side=Tix.TOP, padx=20, pady=2)
-    c.pack(side=Tix.TOP, padx=20, pady=2)
+    a.pack(side=tkinter.tix.TOP, padx=20, pady=2)
+    w.pack(side=tkinter.tix.TOP, padx=20, pady=2)
+    r.pack(side=tkinter.tix.TOP, padx=20, pady=2)
+    c.pack(side=tkinter.tix.TOP, padx=20, pady=2)
 
     # Create the common buttons
     createCommonButtons(common)
@@ -79,23 +79,23 @@
 
     tab = nb.network
 
-    f = Tix.Frame(tab)
-    common = Tix.Frame(tab)
+    f = tkinter.tix.Frame(tab)
+    common = tkinter.tix.Frame(tab)
 
-    f.pack(side=Tix.LEFT, padx=2, pady=2, fill=Tix.BOTH, expand=1)
-    common.pack(side=Tix.RIGHT, padx=2, fill=Tix.Y)
+    f.pack(side=tkinter.tix.LEFT, padx=2, pady=2, fill=tkinter.tix.BOTH, expand=1)
+    common.pack(side=tkinter.tix.RIGHT, padx=2, fill=tkinter.tix.Y)
 
-    a = Tix.Control(f, value=12,   label='Access time: ')
-    w = Tix.Control(f, value=400,  label='Write Throughput: ')
-    r = Tix.Control(f, value=400,  label='Read Throughput: ')
-    c = Tix.Control(f, value=1021, label='Capacity: ')
-    u = Tix.Control(f, value=10,   label='Users: ')
+    a = tkinter.tix.Control(f, value=12,   label='Access time: ')
+    w = tkinter.tix.Control(f, value=400,  label='Write Throughput: ')
+    r = tkinter.tix.Control(f, value=400,  label='Read Throughput: ')
+    c = tkinter.tix.Control(f, value=1021, label='Capacity: ')
+    u = tkinter.tix.Control(f, value=10,   label='Users: ')
 
-    a.pack(side=Tix.TOP, padx=20, pady=2)
-    w.pack(side=Tix.TOP, padx=20, pady=2)
-    r.pack(side=Tix.TOP, padx=20, pady=2)
-    c.pack(side=Tix.TOP, padx=20, pady=2)
-    u.pack(side=Tix.TOP, padx=20, pady=2)
+    a.pack(side=tkinter.tix.TOP, padx=20, pady=2)
+    w.pack(side=tkinter.tix.TOP, padx=20, pady=2)
+    r.pack(side=tkinter.tix.TOP, padx=20, pady=2)
+    c.pack(side=tkinter.tix.TOP, padx=20, pady=2)
+    u.pack(side=tkinter.tix.TOP, padx=20, pady=2)
 
     createCommonButtons(common)
 
@@ -104,16 +104,16 @@
     root.destroy()
 
 def createCommonButtons(master):
-    ok = Tix.Button(master, name='ok', text='OK', width=6,
+    ok = tkinter.tix.Button(master, name='ok', text='OK', width=6,
                 command=doDestroy)
-    cancel = Tix.Button(master, name='cancel',
+    cancel = tkinter.tix.Button(master, name='cancel',
                     text='Cancel', width=6,
                     command=doDestroy)
 
-    ok.pack(side=Tix.TOP, padx=2, pady=2)
-    cancel.pack(side=Tix.TOP, padx=2, pady=2)
+    ok.pack(side=tkinter.tix.TOP, padx=2, pady=2)
+    cancel.pack(side=tkinter.tix.TOP, padx=2, pady=2)
 
 if __name__ == '__main__':
-    root = Tix.Tk()
+    root = tkinter.tix.Tk()
     RunSample(root)
     root.mainloop()
diff --git a/Demo/tix/samples/OptMenu.py b/Demo/tix/samples/OptMenu.py
index 1d39420..d1dd46d 100755
--- a/Demo/tix/samples/OptMenu.py
+++ b/Demo/tix/samples/OptMenu.py
@@ -13,7 +13,7 @@
 # This file demonstrates the use of the tixOptionMenu widget -- you can
 # use it for the user to choose from a fixed set of options
 #
-import Tix
+import tkinter.tix
 
 options = {'text':'Plain Text', 'post':'PostScript', 'html':'HTML',
            'tex':'LaTeX', 'rtf':'Rich Text Format'}
@@ -21,16 +21,16 @@
 def RunSample(w):
     global demo_opt_from, demo_opt_to
 
-    demo_opt_from = Tix.StringVar()
-    demo_opt_to = Tix.StringVar()
+    demo_opt_from = tkinter.tix.StringVar()
+    demo_opt_to = tkinter.tix.StringVar()
 
-    top = Tix.Frame(w, bd=1, relief=Tix.RAISED)
+    top = tkinter.tix.Frame(w, bd=1, relief=tkinter.tix.RAISED)
 
-    from_file = Tix.OptionMenu(top, label="From File Format : ",
+    from_file = tkinter.tix.OptionMenu(top, label="From File Format : ",
                                variable=demo_opt_from,
                                options = 'label.width  19 label.anchor e menubutton.width 15')
 
-    to_file = Tix.OptionMenu(top, label="To File Format : ",
+    to_file = tkinter.tix.OptionMenu(top, label="To File Format : ",
                              variable=demo_opt_to,
                              options='label.width  19 label.anchor e menubutton.width 15')
 
@@ -47,22 +47,22 @@
     demo_opt_from.set('html')
     demo_opt_to.set('post')
 
-    from_file.pack(side=Tix.TOP, anchor=Tix.W, pady=3, padx=6)
-    to_file.pack(side=Tix.TOP, anchor=Tix.W, pady=3, padx=6)
+    from_file.pack(side=tkinter.tix.TOP, anchor=tkinter.tix.W, pady=3, padx=6)
+    to_file.pack(side=tkinter.tix.TOP, anchor=tkinter.tix.W, pady=3, padx=6)
 
-    box = Tix.ButtonBox(w, orientation=Tix.HORIZONTAL)
+    box = tkinter.tix.ButtonBox(w, orientation=tkinter.tix.HORIZONTAL)
     box.add('ok', text='Ok', underline=0, width=6,
             command=lambda w=w: ok_command(w))
     box.add('cancel', text='Cancel', underline=0, width=6,
             command=lambda w=w: w.destroy())
-    box.pack(side=Tix.BOTTOM, fill=Tix.X)
-    top.pack(side=Tix.TOP, fill=Tix.BOTH, expand=1)
+    box.pack(side=tkinter.tix.BOTTOM, fill=tkinter.tix.X)
+    top.pack(side=tkinter.tix.TOP, fill=tkinter.tix.BOTH, expand=1)
 
 def ok_command(w):
     # tixDemo:Status "Convert file from %s to %s" % ( demo_opt_from.get(), demo_opt_to.get())
     w.destroy()
 
 if __name__ == '__main__':
-    root = Tix.Tk()
+    root = tkinter.tix.Tk()
     RunSample(root)
     root.mainloop()
diff --git a/Demo/tix/samples/PanedWin.py b/Demo/tix/samples/PanedWin.py
index 3efc731..1ffc470 100755
--- a/Demo/tix/samples/PanedWin.py
+++ b/Demo/tix/samples/PanedWin.py
@@ -15,7 +15,7 @@
 # of artical names and the size of the text widget that shows the body
 # of the article.
 
-import Tix
+import tkinter.tix
 
 TCL_ALL_EVENTS          = 0
 
@@ -32,30 +32,30 @@
         z = w.winfo_toplevel()
         z.wm_protocol("WM_DELETE_WINDOW", lambda self=self: self.quitcmd())
 
-        group = Tix.LabelEntry(w, label='Newsgroup:', options='entry.width 25')
+        group = tkinter.tix.LabelEntry(w, label='Newsgroup:', options='entry.width 25')
         group.entry.insert(0,'comp.lang.python')
-        pane = Tix.PanedWindow(w, orientation='vertical')
+        pane = tkinter.tix.PanedWindow(w, orientation='vertical')
 
         p1 = pane.add('list', min=70, size=100)
         p2 = pane.add('text', min=70)
-        list = Tix.ScrolledListBox(p1)
+        list = tkinter.tix.ScrolledListBox(p1)
         list.listbox['width'] = 80
         list.listbox['height'] = 5
-        text = Tix.ScrolledText(p2)
+        text = tkinter.tix.ScrolledText(p2)
         text.text['width'] = 80
         text.text['height'] = 20
 
-        list.listbox.insert(Tix.END, "  12324 Re: Tkinter is good for your health")
-        list.listbox.insert(Tix.END, "+ 12325 Re: Tkinter is good for your health")
-        list.listbox.insert(Tix.END, "+ 12326 Re: Tix is even better for your health (Was: Tkinter is good...)")
-        list.listbox.insert(Tix.END, "  12327 Re: Tix is even better for your health (Was: Tkinter is good...)")
-        list.listbox.insert(Tix.END, "+ 12328 Re: Tix is even better for your health (Was: Tkinter is good...)")
-        list.listbox.insert(Tix.END, "  12329 Re: Tix is even better for your health (Was: Tkinter is good...)")
-        list.listbox.insert(Tix.END, "+ 12330 Re: Tix is even better for your health (Was: Tkinter is good...)")
+        list.listbox.insert(tkinter.tix.END, "  12324 Re: Tkinter is good for your health")
+        list.listbox.insert(tkinter.tix.END, "+ 12325 Re: Tkinter is good for your health")
+        list.listbox.insert(tkinter.tix.END, "+ 12326 Re: Tix is even better for your health (Was: Tkinter is good...)")
+        list.listbox.insert(tkinter.tix.END, "  12327 Re: Tix is even better for your health (Was: Tkinter is good...)")
+        list.listbox.insert(tkinter.tix.END, "+ 12328 Re: Tix is even better for your health (Was: Tkinter is good...)")
+        list.listbox.insert(tkinter.tix.END, "  12329 Re: Tix is even better for your health (Was: Tkinter is good...)")
+        list.listbox.insert(tkinter.tix.END, "+ 12330 Re: Tix is even better for your health (Was: Tkinter is good...)")
 
         text.text['bg'] = list.listbox['bg']
         text.text['wrap'] = 'none'
-        text.text.insert(Tix.END, """
+        text.text.insert(tkinter.tix.END, """
     Mon, 19 Jun 1995 11:39:52        comp.lang.python              Thread   34 of  220
     Lines 353       A new way to put text and bitmaps together iNo responses
     ioi@blue.seas.upenn.edu                Ioi K. Lam at University of Pennsylvania
@@ -70,18 +70,18 @@
     """)
         text.text['state'] = 'disabled'
 
-        list.pack(expand=1, fill=Tix.BOTH, padx=4, pady=6)
-        text.pack(expand=1, fill=Tix.BOTH, padx=4, pady=6)
+        list.pack(expand=1, fill=tkinter.tix.BOTH, padx=4, pady=6)
+        text.pack(expand=1, fill=tkinter.tix.BOTH, padx=4, pady=6)
 
-        group.pack(side=Tix.TOP, padx=3, pady=3, fill=Tix.BOTH)
-        pane.pack(side=Tix.TOP, padx=3, pady=3, fill=Tix.BOTH, expand=1)
+        group.pack(side=tkinter.tix.TOP, padx=3, pady=3, fill=tkinter.tix.BOTH)
+        pane.pack(side=tkinter.tix.TOP, padx=3, pady=3, fill=tkinter.tix.BOTH, expand=1)
 
-        box = Tix.ButtonBox(w, orientation=Tix.HORIZONTAL)
+        box = tkinter.tix.ButtonBox(w, orientation=tkinter.tix.HORIZONTAL)
         box.add('ok', text='Ok', underline=0, width=6,
                 command=self.quitcmd)
         box.add('cancel', text='Cancel', underline=0, width=6,
                 command=self.quitcmd)
-        box.pack(side=Tix.BOTTOM, fill=Tix.X)
+        box.pack(side=tkinter.tix.BOTTOM, fill=tkinter.tix.X)
 
     def quitcmd (self):
         self.exit = 0
@@ -94,5 +94,5 @@
         self.root.destroy()
 
 if __name__ == '__main__':
-    root = Tix.Tk()
+    root = tkinter.tix.Tk()
     RunSample(root)
diff --git a/Demo/tix/samples/PopMenu.py b/Demo/tix/samples/PopMenu.py
index 32f3229..cb75d85 100755
--- a/Demo/tix/samples/PopMenu.py
+++ b/Demo/tix/samples/PopMenu.py
@@ -12,18 +12,18 @@
 
 # This file demonstrates the use of the tixPopupMenu widget.
 #
-import Tix
+import tkinter.tix
 
 def RunSample(w):
     # We create the frame and the button, then we'll bind the PopupMenu
     # to both widgets. The result is, when you press the right mouse
     # button over $w.top or $w.top.but, the PopupMenu will come up.
     #
-    top = Tix.Frame(w, relief=Tix.RAISED, bd=1)
-    but = Tix.Button(top, text='Press the right mouse button over this button or its surrounding area')
-    but.pack(expand=1, fill=Tix.BOTH, padx=50, pady=50)
+    top = tkinter.tix.Frame(w, relief=tkinter.tix.RAISED, bd=1)
+    but = tkinter.tix.Button(top, text='Press the right mouse button over this button or its surrounding area')
+    but.pack(expand=1, fill=tkinter.tix.BOTH, padx=50, pady=50)
 
-    p = Tix.PopupMenu(top, title='Popup Test')
+    p = tkinter.tix.PopupMenu(top, title='Popup Test')
     p.bind_widget(top)
     p.bind_widget(but)
 
@@ -37,21 +37,21 @@
     p.menu.add_command(label='Find', underline=0)
     p.menu.add_command(label='System', underline=1)
     p.menu.add_command(label='Help', underline=0)
-    m1 = Tix.Menu(p.menu)
+    m1 = tkinter.tix.Menu(p.menu)
     m1.add_command(label='Hello')
     p.menu.add_cascade(label='More', menu=m1)
 
-    but.pack(side=Tix.TOP, padx=40, pady=50)
+    but.pack(side=tkinter.tix.TOP, padx=40, pady=50)
 
-    box = Tix.ButtonBox(w, orientation=Tix.HORIZONTAL)
+    box = tkinter.tix.ButtonBox(w, orientation=tkinter.tix.HORIZONTAL)
     box.add('ok', text='Ok', underline=0, width=6,
             command=lambda w=w: w.destroy())
     box.add('cancel', text='Cancel', underline=0, width=6,
             command=lambda w=w: w.destroy())
-    box.pack(side=Tix.BOTTOM, fill=Tix.X)
-    top.pack(side=Tix.TOP, fill=Tix.BOTH, expand=1)
+    box.pack(side=tkinter.tix.BOTTOM, fill=tkinter.tix.X)
+    top.pack(side=tkinter.tix.TOP, fill=tkinter.tix.BOTH, expand=1)
 
 if __name__ == '__main__':
-    root = Tix.Tk()
+    root = tkinter.tix.Tk()
     RunSample(root)
     root.mainloop()
diff --git a/Demo/tix/samples/SHList1.py b/Demo/tix/samples/SHList1.py
index 7ca7b3e..bf46020 100755
--- a/Demo/tix/samples/SHList1.py
+++ b/Demo/tix/samples/SHList1.py
@@ -13,7 +13,7 @@
 # This file demonstrates the use of the tixScrolledHList widget.
 #
 
-import Tix
+import tkinter.tix
 
 TCL_ALL_EVENTS          = 0
 
@@ -33,13 +33,13 @@
         # We create the frame and the ScrolledHList widget
         # at the top of the dialog box
         #
-        top = Tix.Frame( w, relief=Tix.RAISED, bd=1)
+        top = tkinter.tix.Frame( w, relief=tkinter.tix.RAISED, bd=1)
 
         # Put a simple hierachy into the HList (two levels). Use colors and
         # separator widgets (frames) to make the list look fancy
         #
-        top.a = Tix.ScrolledHList(top)
-        top.a.pack( expand=1, fill=Tix.BOTH, padx=10, pady=10, side=Tix.TOP)
+        top.a = tkinter.tix.ScrolledHList(top)
+        top.a.pack( expand=1, fill=tkinter.tix.BOTH, padx=10, pady=10, side=tkinter.tix.TOP)
 
         # This is our little relational database
         #
@@ -68,13 +68,13 @@
         count=0
         for boss,name in bosses :
             if count :
-                f=Tix.Frame(hlist, name='sep%d' % count, height=2, width=150,
-                    bd=2, relief=Tix.SUNKEN )
+                f=tkinter.tix.Frame(hlist, name='sep%d' % count, height=2, width=150,
+                    bd=2, relief=tkinter.tix.SUNKEN )
 
-                hlist.add_child( itemtype=Tix.WINDOW,
-                    window=f, state=Tix.DISABLED )
+                hlist.add_child( itemtype=tkinter.tix.WINDOW,
+                    window=f, state=tkinter.tix.DISABLED )
 
-            hlist.add(boss, itemtype=Tix.TEXT, text=name)
+            hlist.add(boss, itemtype=tkinter.tix.TEXT, text=name)
             count = count+1
 
 
@@ -99,15 +99,15 @@
 
         # Use a ButtonBox to hold the buttons.
         #
-        box= Tix.ButtonBox(top, orientation=Tix.HORIZONTAL )
+        box= tkinter.tix.ButtonBox(top, orientation=tkinter.tix.HORIZONTAL )
         box.add( 'ok',  text='Ok', underline=0,  width=6,
             command = self.okcmd)
 
         box.add( 'cancel', text='Cancel', underline=0, width=6,
             command = self.quitcmd)
 
-        box.pack( side=Tix.BOTTOM, fill=Tix.X)
-        top.pack( side=Tix.TOP,    fill=Tix.BOTH, expand=1 )
+        box.pack( side=tkinter.tix.BOTTOM, fill=tkinter.tix.X)
+        top.pack( side=tkinter.tix.TOP,    fill=tkinter.tix.BOTH, expand=1 )
 
     def okcmd (self):
         self.quitcmd()
@@ -127,5 +127,5 @@
 # outside of the main demo program "tixwidgets.py".
 #
 if __name__== '__main__' :
-    root=Tix.Tk()
+    root=tkinter.tix.Tk()
     RunSample(root)
diff --git a/Demo/tix/samples/SHList2.py b/Demo/tix/samples/SHList2.py
index 17fd551..370c765 100755
--- a/Demo/tix/samples/SHList2.py
+++ b/Demo/tix/samples/SHList2.py
@@ -16,7 +16,7 @@
 # In a tixHList widget, you can have one ore more columns.
 #
 
-import Tix
+import tkinter.tix
 
 TCL_ALL_EVENTS          = 0
 
@@ -36,13 +36,13 @@
         # We create the frame and the ScrolledHList widget
         # at the top of the dialog box
         #
-        top = Tix.Frame( w, relief=Tix.RAISED, bd=1)
+        top = tkinter.tix.Frame( w, relief=tkinter.tix.RAISED, bd=1)
 
         # Put a simple hierachy into the HList (two levels). Use colors and
         # separator widgets (frames) to make the list look fancy
         #
-        top.a = Tix.ScrolledHList(top, options='hlist.columns 3 hlist.header 1' )
-        top.a.pack( expand=1, fill=Tix.BOTH, padx=10, pady=10, side=Tix.TOP)
+        top.a = tkinter.tix.ScrolledHList(top, options='hlist.columns 3 hlist.header 1' )
+        top.a.pack( expand=1, fill=tkinter.tix.BOTH, padx=10, pady=10, side=tkinter.tix.TOP)
 
         hlist=top.a.hlist
 
@@ -55,12 +55,12 @@
 
         # First some styles for the headers
         style={}
-        style['header'] = Tix.DisplayStyle(Tix.TEXT, refwindow=hlist,
-            anchor=Tix.CENTER, padx=8, pady=2, font = boldfont )
+        style['header'] = tkinter.tix.DisplayStyle(tkinter.tix.TEXT, refwindow=hlist,
+            anchor=tkinter.tix.CENTER, padx=8, pady=2, font = boldfont )
 
-        hlist.header_create(0, itemtype=Tix.TEXT, text='Name',
+        hlist.header_create(0, itemtype=tkinter.tix.TEXT, text='Name',
             style=style['header'])
-        hlist.header_create(1, itemtype=Tix.TEXT, text='Position',
+        hlist.header_create(1, itemtype=tkinter.tix.TEXT, text='Position',
             style=style['header'])
 
         # Notice that we use 3 columns in the hlist widget. This way when the user
@@ -90,13 +90,13 @@
             ('chuck', 'jeff',       'Chuck McLean',             'Cleaner')
         ]
 
-        style['mgr_name'] = Tix.DisplayStyle(Tix.TEXT, refwindow=hlist)
+        style['mgr_name'] = tkinter.tix.DisplayStyle(tkinter.tix.TEXT, refwindow=hlist)
 
-        style['mgr_posn'] = Tix.DisplayStyle(Tix.TEXT, padx=8, refwindow=hlist)
+        style['mgr_posn'] = tkinter.tix.DisplayStyle(tkinter.tix.TEXT, padx=8, refwindow=hlist)
 
-        style['empl_name'] = Tix.DisplayStyle(Tix.TEXT, refwindow=hlist)
+        style['empl_name'] = tkinter.tix.DisplayStyle(tkinter.tix.TEXT, refwindow=hlist)
 
-        style['empl_posn'] = Tix.DisplayStyle(Tix.TEXT, padx=8, refwindow=hlist)
+        style['empl_posn'] = tkinter.tix.DisplayStyle(tkinter.tix.TEXT, padx=8, refwindow=hlist)
 
         # Let configure the appearance of the HList subwidget
         #
@@ -105,9 +105,9 @@
 
         # Create the boss
         #
-        hlist.add ('.',           itemtype=Tix.TEXT, text=boss[1],
+        hlist.add ('.',           itemtype=tkinter.tix.TEXT, text=boss[1],
             style=style['mgr_name'])
-        hlist.item_create('.', 1, itemtype=Tix.TEXT, text=boss[2],
+        hlist.item_create('.', 1, itemtype=tkinter.tix.TEXT, text=boss[2],
             style=style['mgr_posn'])
 
         # Create the managers
@@ -115,9 +115,9 @@
 
         for key,name,posn in managers :
             e= '.'+ key
-            hlist.add(e, itemtype=Tix.TEXT, text=name,
+            hlist.add(e, itemtype=tkinter.tix.TEXT, text=name,
                 style=style['mgr_name'])
-            hlist.item_create(e, 1, itemtype=Tix.TEXT, text=posn,
+            hlist.item_create(e, 1, itemtype=tkinter.tix.TEXT, text=posn,
                 style=style['mgr_posn'])
 
 
@@ -130,21 +130,21 @@
             #       parent entryPath / child's name
 
             hlist.add(entrypath, text=name, style=style['empl_name'])
-            hlist.item_create(entrypath, 1, itemtype=Tix.TEXT,
+            hlist.item_create(entrypath, 1, itemtype=tkinter.tix.TEXT,
                 text = posn, style = style['empl_posn'] )
 
 
         # Use a ButtonBox to hold the buttons.
         #
-        box= Tix.ButtonBox(top, orientation=Tix.HORIZONTAL )
+        box= tkinter.tix.ButtonBox(top, orientation=tkinter.tix.HORIZONTAL )
         box.add( 'ok',  text='Ok', underline=0,  width=6,
             command = self.okcmd )
 
         box.add( 'cancel', text='Cancel', underline=0, width=6,
             command = self.quitcmd )
 
-        box.pack( side=Tix.BOTTOM, fill=Tix.X)
-        top.pack( side=Tix.TOP,    fill=Tix.BOTH, expand=1 )
+        box.pack( side=tkinter.tix.BOTTOM, fill=tkinter.tix.X)
+        top.pack( side=tkinter.tix.TOP,    fill=tkinter.tix.BOTH, expand=1 )
 
     def okcmd (self):
         self.quitcmd()
@@ -164,5 +164,5 @@
 # outside of the main demo program "tixwidgets.py".
 #
 if __name__== '__main__' :
-    root=Tix.Tk()
+    root=tkinter.tix.Tk()
     RunSample(root)
diff --git a/Demo/tix/samples/Tree.py b/Demo/tix/samples/Tree.py
index 9a7e481..e46ff60 100755
--- a/Demo/tix/samples/Tree.py
+++ b/Demo/tix/samples/Tree.py
@@ -14,30 +14,30 @@
 # dynamic hierachical data (the files in the Unix file system)
 #
 
-import Tix, os
+import tkinter.tix, os
 
 def RunSample(w):
-    top = Tix.Frame(w, relief=Tix.RAISED, bd=1)
-    tree = Tix.Tree(top, options='separator "/"')
-    tree.pack(expand=1, fill=Tix.BOTH, padx=10, pady=10, side=Tix.LEFT)
+    top = tkinter.tix.Frame(w, relief=tkinter.tix.RAISED, bd=1)
+    tree = tkinter.tix.Tree(top, options='separator "/"')
+    tree.pack(expand=1, fill=tkinter.tix.BOTH, padx=10, pady=10, side=tkinter.tix.LEFT)
     tree['opencmd'] = lambda dir=None, w=tree: opendir(w, dir)
 
     # The / directory is added in the "open" mode. The user can open it
     # and then browse its subdirectories ...
     adddir(tree, "/")
 
-    box = Tix.ButtonBox(w, orientation=Tix.HORIZONTAL)
+    box = tkinter.tix.ButtonBox(w, orientation=tkinter.tix.HORIZONTAL)
     box.add('ok', text='Ok', underline=0, command=w.destroy, width=6)
     box.add('cancel', text='Cancel', underline=0, command=w.destroy, width=6)
-    box.pack(side=Tix.BOTTOM, fill=Tix.X)
-    top.pack(side=Tix.TOP, fill=Tix.BOTH, expand=1)
+    box.pack(side=tkinter.tix.BOTTOM, fill=tkinter.tix.X)
+    top.pack(side=tkinter.tix.TOP, fill=tkinter.tix.BOTH, expand=1)
 
 def adddir(tree, dir):
     if dir == '/':
         text = '/'
     else:
         text = os.path.basename(dir)
-    tree.hlist.add(dir, itemtype=Tix.IMAGETEXT, text=text,
+    tree.hlist.add(dir, itemtype=tkinter.tix.IMAGETEXT, text=text,
                    image=tree.tk.call('tix', 'getimage', 'folder'))
     try:
         os.listdir(dir)
@@ -71,10 +71,10 @@
         if os.path.isdir(dir + '/' + file):
             adddir(tree, dir + '/' + file)
         else:
-            tree.hlist.add(dir + '/' + file, itemtype=Tix.IMAGETEXT, text=file,
+            tree.hlist.add(dir + '/' + file, itemtype=tkinter.tix.IMAGETEXT, text=file,
                            image=tree.tk.call('tix', 'getimage', 'file'))
 
 if __name__ == '__main__':
-    root = Tix.Tk()
+    root = tkinter.tix.Tk()
     RunSample(root)
     root.mainloop()
diff --git a/Demo/tix/tixwidgets.py b/Demo/tix/tixwidgets.py
index 49d1e7f..42bcedc 100644
--- a/Demo/tix/tixwidgets.py
+++ b/Demo/tix/tixwidgets.py
@@ -12,9 +12,9 @@
 #               % python tixwidgets.py
 #
 
-import os, os.path, sys, Tix
-from Tkconstants import *
-import traceback, tkMessageBox
+import os, os.path, sys, tkinter.tix
+from tkinter.constants import *
+import traceback, tkinter.messagebox
 
 TCL_DONT_WAIT           = 1<<1
 TCL_WINDOW_EVENTS       = 1<<2
@@ -30,7 +30,7 @@
 
         self.dir = None                         # script directory
         self.balloon = None                     # balloon widget
-        self.useBalloons = Tix.StringVar()
+        self.useBalloons = tkinter.tix.StringVar()
         self.useBalloons.set('0')
         self.statusbar = None                   # status bar widget
         self.welmsg = None                      # Msg widget
@@ -56,14 +56,14 @@
 
     def MkMainMenu(self):
         top = self.root
-        w = Tix.Frame(top, bd=2, relief=RAISED)
-        file = Tix.Menubutton(w, text='File', underline=0, takefocus=0)
-        help = Tix.Menubutton(w, text='Help', underline=0, takefocus=0)
+        w = tkinter.tix.Frame(top, bd=2, relief=RAISED)
+        file = tkinter.tix.Menubutton(w, text='File', underline=0, takefocus=0)
+        help = tkinter.tix.Menubutton(w, text='Help', underline=0, takefocus=0)
         file.pack(side=LEFT)
         help.pack(side=RIGHT)
-        fm = Tix.Menu(file, tearoff=0)
+        fm = tkinter.tix.Menu(file, tearoff=0)
         file['menu'] = fm
-        hm = Tix.Menu(help, tearoff=0)
+        hm = tkinter.tix.Menu(help, tearoff=0)
         help['menu'] = hm
 
         fm.add_command(label='Exit', underline=1,
@@ -77,7 +77,7 @@
 
     def MkMainNotebook(self):
         top = self.root
-        w = Tix.NoteBook(top, ipadx=5, ipady=5, options="""
+        w = tkinter.tix.NoteBook(top, ipadx=5, ipady=5, options="""
         tagPadX 6
         tagPadY 4
         borderWidth 2
@@ -103,8 +103,8 @@
         global demo
         top = self.root
 
-        w = Tix.Frame(top, relief=Tix.RAISED, bd=1)
-        demo.statusbar = Tix.Label(w, relief=Tix.SUNKEN, bd=1)
+        w = tkinter.tix.Frame(top, relief=tkinter.tix.RAISED, bd=1)
+        demo.statusbar = tkinter.tix.Label(w, relief=tkinter.tix.SUNKEN, bd=1)
         demo.statusbar.form(padx=3, pady=3, left=0, right='%70')
         return w
 
@@ -116,7 +116,7 @@
             z.geometry('790x590+10+10')
         else:
             z.geometry('890x640+10+10')
-        demo.balloon = Tix.Balloon(root)
+        demo.balloon = tkinter.tix.Balloon(root)
         frame1 = self.MkMainMenu()
         frame2 = self.MkMainNotebook()
         frame3 = self.MkMainStatus()
@@ -152,7 +152,7 @@
                 self.exit = 1
                 return
             except KeyboardInterrupt:
-                if tkMessageBox.askquestion ('Interrupt', 'Really Quit?') == 'yes':
+                if tkinter.messagebox.askquestion ('Interrupt', 'Really Quit?') == 'yes':
                     # self.tk.eval('exit')
                     self.exit = 1
                     return
@@ -163,7 +163,7 @@
                 text = ""
                 for line in traceback.format_exception(t,v,tb):
                     text += line + '\n'
-                try: tkMessageBox.showerror ('Error', text)
+                try: tkinter.messagebox.showerror ('Error', text)
                 except: pass
                 self.exit = 1
                 raise SystemExit(1)
@@ -191,9 +191,9 @@
 def MkWelcomeBar(top):
     global demo
 
-    w = Tix.Frame(top, bd=2, relief=Tix.GROOVE)
-    b1 = Tix.ComboBox(w, command=lambda w=top: MainTextFont(w))
-    b2 = Tix.ComboBox(w, command=lambda w=top: MainTextFont(w))
+    w = tkinter.tix.Frame(top, bd=2, relief=tkinter.tix.GROOVE)
+    b1 = tkinter.tix.ComboBox(w, command=lambda w=top: MainTextFont(w))
+    b2 = tkinter.tix.ComboBox(w, command=lambda w=top: MainTextFont(w))
     b1.entry['width'] = 15
     b1.slistbox.listbox['height'] = 3
     b2.entry['width'] = 4
@@ -202,22 +202,22 @@
     demo.welfont = b1
     demo.welsize = b2
 
-    b1.insert(Tix.END, 'Courier')
-    b1.insert(Tix.END, 'Helvetica')
-    b1.insert(Tix.END, 'Lucida')
-    b1.insert(Tix.END, 'Times Roman')
+    b1.insert(tkinter.tix.END, 'Courier')
+    b1.insert(tkinter.tix.END, 'Helvetica')
+    b1.insert(tkinter.tix.END, 'Lucida')
+    b1.insert(tkinter.tix.END, 'Times Roman')
 
-    b2.insert(Tix.END, '8')
-    b2.insert(Tix.END, '10')
-    b2.insert(Tix.END, '12')
-    b2.insert(Tix.END, '14')
-    b2.insert(Tix.END, '18')
+    b2.insert(tkinter.tix.END, '8')
+    b2.insert(tkinter.tix.END, '10')
+    b2.insert(tkinter.tix.END, '12')
+    b2.insert(tkinter.tix.END, '14')
+    b2.insert(tkinter.tix.END, '18')
 
     b1.pick(1)
     b2.pick(3)
 
-    b1.pack(side=Tix.LEFT, padx=4, pady=4)
-    b2.pack(side=Tix.LEFT, padx=4, pady=4)
+    b1.pack(side=tkinter.tix.LEFT, padx=4, pady=4)
+    b2.pack(side=tkinter.tix.LEFT, padx=4, pady=4)
 
     demo.balloon.bind_widget(b1, msg='Choose\na font',
                              statusmsg='Choose a font for this page')
@@ -228,20 +228,20 @@
 def MkWelcomeText(top):
     global demo
 
-    w = Tix.ScrolledWindow(top, scrollbar='auto')
+    w = tkinter.tix.ScrolledWindow(top, scrollbar='auto')
     win = w.window
     text = 'Welcome to TIX in Python'
-    title = Tix.Label(win,
-                      bd=0, width=30, anchor=Tix.N, text=text)
-    msg = Tix.Message(win,
-                      bd=0, width=400, anchor=Tix.N,
+    title = tkinter.tix.Label(win,
+                      bd=0, width=30, anchor=tkinter.tix.N, text=text)
+    msg = tkinter.tix.Message(win,
+                      bd=0, width=400, anchor=tkinter.tix.N,
                       text='Tix is a set of mega-widgets based on TK. This program \
 demonstrates the widgets in the Tix widget set. You can choose the pages \
 in this window to look at the corresponding widgets. \n\n\
 To quit this program, choose the "File | Exit" command.\n\n\
 For more information, see http://tix.sourceforge.net.')
-    title.pack(expand=1, fill=Tix.BOTH, padx=10, pady=10)
-    msg.pack(expand=1, fill=Tix.BOTH, padx=10, pady=10)
+    title.pack(expand=1, fill=tkinter.tix.BOTH, padx=10, pady=10)
+    msg.pack(expand=1, fill=tkinter.tix.BOTH, padx=10, pady=10)
     demo.welmsg = msg
     return w
 
@@ -267,14 +267,14 @@
     w = nb.page(name)
     options = "label.padX 4"
 
-    til = Tix.LabelFrame(w, label='Chooser Widgets', options=options)
-    cbx = Tix.LabelFrame(w, label='tixComboBox', options=options)
-    ctl = Tix.LabelFrame(w, label='tixControl', options=options)
-    sel = Tix.LabelFrame(w, label='tixSelect', options=options)
-    opt = Tix.LabelFrame(w, label='tixOptionMenu', options=options)
-    fil = Tix.LabelFrame(w, label='tixFileEntry', options=options)
-    fbx = Tix.LabelFrame(w, label='tixFileSelectBox', options=options)
-    tbr = Tix.LabelFrame(w, label='Tool Bar', options=options)
+    til = tkinter.tix.LabelFrame(w, label='Chooser Widgets', options=options)
+    cbx = tkinter.tix.LabelFrame(w, label='tixComboBox', options=options)
+    ctl = tkinter.tix.LabelFrame(w, label='tixControl', options=options)
+    sel = tkinter.tix.LabelFrame(w, label='tixSelect', options=options)
+    opt = tkinter.tix.LabelFrame(w, label='tixOptionMenu', options=options)
+    fil = tkinter.tix.LabelFrame(w, label='tixFileEntry', options=options)
+    fbx = tkinter.tix.LabelFrame(w, label='tixFileSelectBox', options=options)
+    tbr = tkinter.tix.LabelFrame(w, label='Tool Bar', options=options)
 
     MkTitle(til.frame)
     MkCombo(cbx.frame)
@@ -301,38 +301,38 @@
     fbx.form(right=-1, top=0, left='%66')
 
 def MkCombo(w):
-    options="label.width %d label.anchor %s entry.width %d" % (10, Tix.E, 14)
+    options="label.width %d label.anchor %s entry.width %d" % (10, tkinter.tix.E, 14)
 
-    static = Tix.ComboBox(w, label='Static', editable=0, options=options)
-    editable = Tix.ComboBox(w, label='Editable', editable=1, options=options)
-    history = Tix.ComboBox(w, label='History', editable=1, history=1,
-                           anchor=Tix.E, options=options)
-    static.insert(Tix.END, 'January')
-    static.insert(Tix.END, 'February')
-    static.insert(Tix.END, 'March')
-    static.insert(Tix.END, 'April')
-    static.insert(Tix.END, 'May')
-    static.insert(Tix.END, 'June')
-    static.insert(Tix.END, 'July')
-    static.insert(Tix.END, 'August')
-    static.insert(Tix.END, 'September')
-    static.insert(Tix.END, 'October')
-    static.insert(Tix.END, 'November')
-    static.insert(Tix.END, 'December')
+    static = tkinter.tix.ComboBox(w, label='Static', editable=0, options=options)
+    editable = tkinter.tix.ComboBox(w, label='Editable', editable=1, options=options)
+    history = tkinter.tix.ComboBox(w, label='History', editable=1, history=1,
+                           anchor=tkinter.tix.E, options=options)
+    static.insert(tkinter.tix.END, 'January')
+    static.insert(tkinter.tix.END, 'February')
+    static.insert(tkinter.tix.END, 'March')
+    static.insert(tkinter.tix.END, 'April')
+    static.insert(tkinter.tix.END, 'May')
+    static.insert(tkinter.tix.END, 'June')
+    static.insert(tkinter.tix.END, 'July')
+    static.insert(tkinter.tix.END, 'August')
+    static.insert(tkinter.tix.END, 'September')
+    static.insert(tkinter.tix.END, 'October')
+    static.insert(tkinter.tix.END, 'November')
+    static.insert(tkinter.tix.END, 'December')
 
-    editable.insert(Tix.END, 'Angola')
-    editable.insert(Tix.END, 'Bangladesh')
-    editable.insert(Tix.END, 'China')
-    editable.insert(Tix.END, 'Denmark')
-    editable.insert(Tix.END, 'Ecuador')
+    editable.insert(tkinter.tix.END, 'Angola')
+    editable.insert(tkinter.tix.END, 'Bangladesh')
+    editable.insert(tkinter.tix.END, 'China')
+    editable.insert(tkinter.tix.END, 'Denmark')
+    editable.insert(tkinter.tix.END, 'Ecuador')
 
-    history.insert(Tix.END, '/usr/bin/ksh')
-    history.insert(Tix.END, '/usr/local/lib/python')
-    history.insert(Tix.END, '/var/adm')
+    history.insert(tkinter.tix.END, '/usr/bin/ksh')
+    history.insert(tkinter.tix.END, '/usr/local/lib/python')
+    history.insert(tkinter.tix.END, '/var/adm')
 
-    static.pack(side=Tix.TOP, padx=5, pady=3)
-    editable.pack(side=Tix.TOP, padx=5, pady=3)
-    history.pack(side=Tix.TOP, padx=5, pady=3)
+    static.pack(side=tkinter.tix.TOP, padx=5, pady=3)
+    editable.pack(side=tkinter.tix.TOP, padx=5, pady=3)
+    history.pack(side=tkinter.tix.TOP, padx=5, pady=3)
 
 states = ['Bengal', 'Delhi', 'Karnataka', 'Tamil Nadu']
 
@@ -359,30 +359,30 @@
 def MkControl(w):
     global demo_spintxt
 
-    options="label.width %d label.anchor %s entry.width %d" % (10, Tix.E, 13)
+    options="label.width %d label.anchor %s entry.width %d" % (10, tkinter.tix.E, 13)
 
-    demo_spintxt = Tix.StringVar()
+    demo_spintxt = tkinter.tix.StringVar()
     demo_spintxt.set(states[0])
-    simple = Tix.Control(w, label='Numbers', options=options)
-    spintxt = Tix.Control(w, label='States', variable=demo_spintxt,
+    simple = tkinter.tix.Control(w, label='Numbers', options=options)
+    spintxt = tkinter.tix.Control(w, label='States', variable=demo_spintxt,
                           options=options)
     spintxt['incrcmd'] = lambda w=spintxt: spin_cmd(w, 1)
     spintxt['decrcmd'] = lambda w=spintxt: spin_cmd(w, -1)
     spintxt['validatecmd'] = lambda w=spintxt: spin_validate(w)
 
-    simple.pack(side=Tix.TOP, padx=5, pady=3)
-    spintxt.pack(side=Tix.TOP, padx=5, pady=3)
+    simple.pack(side=tkinter.tix.TOP, padx=5, pady=3)
+    spintxt.pack(side=tkinter.tix.TOP, padx=5, pady=3)
 
 def MkSelect(w):
-    options = "label.anchor %s" % Tix.CENTER
+    options = "label.anchor %s" % tkinter.tix.CENTER
 
-    sel1 = Tix.Select(w, label='Mere Mortals', allowzero=1, radio=1,
-                      orientation=Tix.VERTICAL,
-                      labelside=Tix.TOP,
+    sel1 = tkinter.tix.Select(w, label='Mere Mortals', allowzero=1, radio=1,
+                      orientation=tkinter.tix.VERTICAL,
+                      labelside=tkinter.tix.TOP,
                       options=options)
-    sel2 = Tix.Select(w, label='Geeks', allowzero=1, radio=0,
-                      orientation=Tix.VERTICAL,
-                      labelside= Tix.TOP,
+    sel2 = tkinter.tix.Select(w, label='Geeks', allowzero=1, radio=0,
+                      orientation=tkinter.tix.VERTICAL,
+                      labelside= tkinter.tix.TOP,
                       options=options)
 
     sel1.add('eat', text='Eat')
@@ -397,13 +397,13 @@
     sel2.add('prog3', text='Program')
     sel2.add('sleep', text='Sleep')
 
-    sel1.pack(side=Tix.LEFT, padx=5, pady=3, fill=Tix.X)
-    sel2.pack(side=Tix.LEFT, padx=5, pady=3, fill=Tix.X)
+    sel1.pack(side=tkinter.tix.LEFT, padx=5, pady=3, fill=tkinter.tix.X)
+    sel2.pack(side=tkinter.tix.LEFT, padx=5, pady=3, fill=tkinter.tix.X)
 
 def MkOptMenu(w):
-    options='menubutton.width 15 label.anchor %s' % Tix.E
+    options='menubutton.width 15 label.anchor %s' % tkinter.tix.E
 
-    m = Tix.OptionMenu(w, label='File Format : ', options=options)
+    m = tkinter.tix.OptionMenu(w, label='File Format : ', options=options)
     m.add_command('text', label='Plain Text')
     m.add_command('post', label='PostScript')
     m.add_command('format', label='Formatted Text')
@@ -412,27 +412,27 @@
     m.add_command('tex', label='LaTeX')
     m.add_command('rtf', label='Rich Text Format')
 
-    m.pack(fill=Tix.X, padx=5, pady=3)
+    m.pack(fill=tkinter.tix.X, padx=5, pady=3)
 
 def MkFileEnt(w):
-    msg = Tix.Message(w,
-                      relief=Tix.FLAT, width=240, anchor=Tix.N,
+    msg = tkinter.tix.Message(w,
+                      relief=tkinter.tix.FLAT, width=240, anchor=tkinter.tix.N,
                       text='Press the "open file" icon button and a TixFileSelectDialog will popup.')
-    ent = Tix.FileEntry(w, label='Select a file : ')
-    msg.pack(side=Tix.TOP, expand=1, fill=Tix.BOTH, padx=3, pady=3)
-    ent.pack(side=Tix.TOP, fill=Tix.X, padx=3, pady=3)
+    ent = tkinter.tix.FileEntry(w, label='Select a file : ')
+    msg.pack(side=tkinter.tix.TOP, expand=1, fill=tkinter.tix.BOTH, padx=3, pady=3)
+    ent.pack(side=tkinter.tix.TOP, fill=tkinter.tix.X, padx=3, pady=3)
 
 def MkFileBox(w):
     """The FileSelectBox is a Motif-style box with various enhancements.
     For example, you can adjust the size of the two listboxes
     and your past selections are recorded.
     """
-    msg = Tix.Message(w,
-                      relief=Tix.FLAT, width=240, anchor=Tix.N,
+    msg = tkinter.tix.Message(w,
+                      relief=tkinter.tix.FLAT, width=240, anchor=tkinter.tix.N,
                       text='The Tix FileSelectBox is a Motif-style box with various enhancements. For example, you can adjust the size of the two listboxes and your past selections are recorded.')
-    box = Tix.FileSelectBox(w)
-    msg.pack(side=Tix.TOP, expand=1, fill=Tix.BOTH, padx=3, pady=3)
-    box.pack(side=Tix.TOP, fill=Tix.X, padx=3, pady=3)
+    box = tkinter.tix.FileSelectBox(w)
+    msg.pack(side=tkinter.tix.TOP, expand=1, fill=tkinter.tix.BOTH, padx=3, pady=3)
+    box.pack(side=tkinter.tix.TOP, fill=tkinter.tix.X, padx=3, pady=3)
 
 def MkToolBar(w):
     """The Select widget is also good for arranging buttons in a tool bar.
@@ -441,12 +441,12 @@
 
     options='frame.borderWidth 1'
 
-    msg = Tix.Message(w,
-                      relief=Tix.FLAT, width=240, anchor=Tix.N,
+    msg = tkinter.tix.Message(w,
+                      relief=tkinter.tix.FLAT, width=240, anchor=tkinter.tix.N,
                       text='The Select widget is also good for arranging buttons in a tool bar.')
-    bar = Tix.Frame(w, bd=2, relief=Tix.RAISED)
-    font = Tix.Select(w, allowzero=1, radio=0, label='', options=options)
-    para = Tix.Select(w, allowzero=0, radio=1, label='', options=options)
+    bar = tkinter.tix.Frame(w, bd=2, relief=tkinter.tix.RAISED)
+    font = tkinter.tix.Select(w, allowzero=1, radio=0, label='', options=options)
+    para = tkinter.tix.Select(w, allowzero=0, radio=1, label='', options=options)
 
     font.add('bold', bitmap='@' + demo.dir + '/bitmaps/bold.xbm')
     font.add('italic', bitmap='@' + demo.dir + '/bitmaps/italic.xbm')
@@ -458,24 +458,24 @@
     para.add('center', bitmap='@' + demo.dir + '/bitmaps/centerj.xbm')
     para.add('justify', bitmap='@' + demo.dir + '/bitmaps/justify.xbm')
 
-    msg.pack(side=Tix.TOP, expand=1, fill=Tix.BOTH, padx=3, pady=3)
-    bar.pack(side=Tix.TOP, fill=Tix.X, padx=3, pady=3)
-    font.pack({'in':bar}, side=Tix.LEFT, padx=3, pady=3)
-    para.pack({'in':bar}, side=Tix.LEFT, padx=3, pady=3)
+    msg.pack(side=tkinter.tix.TOP, expand=1, fill=tkinter.tix.BOTH, padx=3, pady=3)
+    bar.pack(side=tkinter.tix.TOP, fill=tkinter.tix.X, padx=3, pady=3)
+    font.pack({'in':bar}, side=tkinter.tix.LEFT, padx=3, pady=3)
+    para.pack({'in':bar}, side=tkinter.tix.LEFT, padx=3, pady=3)
 
 def MkTitle(w):
-    msg = Tix.Message(w,
-                      relief=Tix.FLAT, width=240, anchor=Tix.N,
+    msg = tkinter.tix.Message(w,
+                      relief=tkinter.tix.FLAT, width=240, anchor=tkinter.tix.N,
                       text='There are many types of "chooser" widgets that allow the user to input different types of information')
-    msg.pack(side=Tix.TOP, expand=1, fill=Tix.BOTH, padx=3, pady=3)
+    msg.pack(side=tkinter.tix.TOP, expand=1, fill=tkinter.tix.BOTH, padx=3, pady=3)
 
 def MkScroll(nb, name):
     w = nb.page(name)
     options='label.padX 4'
 
-    sls = Tix.LabelFrame(w, label='Tix.ScrolledListBox', options=options)
-    swn = Tix.LabelFrame(w, label='Tix.ScrolledWindow', options=options)
-    stx = Tix.LabelFrame(w, label='Tix.ScrolledText', options=options)
+    sls = tkinter.tix.LabelFrame(w, label='Tix.ScrolledListBox', options=options)
+    swn = tkinter.tix.LabelFrame(w, label='Tix.ScrolledWindow', options=options)
+    stx = tkinter.tix.LabelFrame(w, label='Tix.ScrolledText', options=options)
 
     MkSList(sls.frame)
     MkSWindow(swn.frame)
@@ -490,31 +490,31 @@
     """This TixScrolledListBox is configured so that it uses scrollbars
     only when it is necessary. Use the handles to resize the listbox and
     watch the scrollbars automatically appear and disappear.  """
-    top = Tix.Frame(w, width=300, height=330)
-    bot = Tix.Frame(w)
-    msg = Tix.Message(top,
-                      relief=Tix.FLAT, width=200, anchor=Tix.N,
+    top = tkinter.tix.Frame(w, width=300, height=330)
+    bot = tkinter.tix.Frame(w)
+    msg = tkinter.tix.Message(top,
+                      relief=tkinter.tix.FLAT, width=200, anchor=tkinter.tix.N,
                       text='This TixScrolledListBox is configured so that it uses scrollbars only when it is necessary. Use the handles to resize the listbox and watch the scrollbars automatically appear and disappear.')
 
-    list = Tix.ScrolledListBox(top, scrollbar='auto')
+    list = tkinter.tix.ScrolledListBox(top, scrollbar='auto')
     list.place(x=50, y=150, width=120, height=80)
-    list.listbox.insert(Tix.END, 'Alabama')
-    list.listbox.insert(Tix.END, 'California')
-    list.listbox.insert(Tix.END, 'Montana')
-    list.listbox.insert(Tix.END, 'New Jersey')
-    list.listbox.insert(Tix.END, 'New York')
-    list.listbox.insert(Tix.END, 'Pennsylvania')
-    list.listbox.insert(Tix.END, 'Washington')
+    list.listbox.insert(tkinter.tix.END, 'Alabama')
+    list.listbox.insert(tkinter.tix.END, 'California')
+    list.listbox.insert(tkinter.tix.END, 'Montana')
+    list.listbox.insert(tkinter.tix.END, 'New Jersey')
+    list.listbox.insert(tkinter.tix.END, 'New York')
+    list.listbox.insert(tkinter.tix.END, 'Pennsylvania')
+    list.listbox.insert(tkinter.tix.END, 'Washington')
 
-    rh = Tix.ResizeHandle(top, bg='black',
-                          relief=Tix.RAISED,
+    rh = tkinter.tix.ResizeHandle(top, bg='black',
+                          relief=tkinter.tix.RAISED,
                           handlesize=8, gridded=1, minwidth=50, minheight=30)
-    btn = Tix.Button(bot, text='Reset', command=lambda w=rh, x=list: SList_reset(w,x))
+    btn = tkinter.tix.Button(bot, text='Reset', command=lambda w=rh, x=list: SList_reset(w,x))
     top.propagate(0)
-    msg.pack(fill=Tix.X)
-    btn.pack(anchor=Tix.CENTER)
-    top.pack(expand=1, fill=Tix.BOTH)
-    bot.pack(fill=Tix.BOTH)
+    msg.pack(fill=tkinter.tix.X)
+    btn.pack(anchor=tkinter.tix.CENTER)
+    top.pack(expand=1, fill=tkinter.tix.BOTH)
+    bot.pack(fill=tkinter.tix.BOTH)
     list.bind('<Map>', func=lambda arg=0, rh=rh, list=list:
               list.tk.call('tixDoWhenIdle', str(rh), 'attachwidget', str(list)))
 
@@ -535,29 +535,29 @@
     if not os.path.isfile(file):
         text += ' (Image missing)'
 
-    top = Tix.Frame(w, width=330, height=330)
-    bot = Tix.Frame(w)
-    msg = Tix.Message(top,
-                      relief=Tix.FLAT, width=200, anchor=Tix.N,
+    top = tkinter.tix.Frame(w, width=330, height=330)
+    bot = tkinter.tix.Frame(w)
+    msg = tkinter.tix.Message(top,
+                      relief=tkinter.tix.FLAT, width=200, anchor=tkinter.tix.N,
                       text=text)
 
-    win = Tix.ScrolledWindow(top, scrollbar='auto')
+    win = tkinter.tix.ScrolledWindow(top, scrollbar='auto')
 
     image1 = win.window.image_create('photo', file=file)
-    lbl = Tix.Label(win.window, image=image1)
-    lbl.pack(expand=1, fill=Tix.BOTH)
+    lbl = tkinter.tix.Label(win.window, image=image1)
+    lbl.pack(expand=1, fill=tkinter.tix.BOTH)
 
     win.place(x=30, y=150, width=190, height=120)
 
-    rh = Tix.ResizeHandle(top, bg='black',
-                          relief=Tix.RAISED,
+    rh = tkinter.tix.ResizeHandle(top, bg='black',
+                          relief=tkinter.tix.RAISED,
                           handlesize=8, gridded=1, minwidth=50, minheight=30)
-    btn = Tix.Button(bot, text='Reset', command=lambda w=rh, x=win: SWindow_reset(w,x))
+    btn = tkinter.tix.Button(bot, text='Reset', command=lambda w=rh, x=win: SWindow_reset(w,x))
     top.propagate(0)
-    msg.pack(fill=Tix.X)
-    btn.pack(anchor=Tix.CENTER)
-    top.pack(expand=1, fill=Tix.BOTH)
-    bot.pack(fill=Tix.BOTH)
+    msg.pack(fill=tkinter.tix.X)
+    btn.pack(anchor=tkinter.tix.CENTER)
+    top.pack(expand=1, fill=tkinter.tix.BOTH)
+    bot.pack(fill=tkinter.tix.BOTH)
 
     win.bind('<Map>', func=lambda arg=0, rh=rh, win=win:
              win.tk.call('tixDoWhenIdle', str(rh), 'attachwidget', str(win)))
@@ -570,15 +570,15 @@
 def MkSText(w):
     """The TixScrolledWindow widget allows you to scroll any kind of Tk
     widget. It is more versatile than a scrolled canvas widget."""
-    top = Tix.Frame(w, width=330, height=330)
-    bot = Tix.Frame(w)
-    msg = Tix.Message(top,
-                      relief=Tix.FLAT, width=200, anchor=Tix.N,
+    top = tkinter.tix.Frame(w, width=330, height=330)
+    bot = tkinter.tix.Frame(w)
+    msg = tkinter.tix.Message(top,
+                      relief=tkinter.tix.FLAT, width=200, anchor=tkinter.tix.N,
                       text='The Tix ScrolledWindow widget allows you to scroll any kind of Tk widget. It is more versatile than a scrolled canvas widget.')
 
-    win = Tix.ScrolledText(top, scrollbar='auto')
+    win = tkinter.tix.ScrolledText(top, scrollbar='auto')
     win.text['wrap'] = 'none'
-    win.text.insert(Tix.END, '''When -scrollbar is set to "auto", the
+    win.text.insert(tkinter.tix.END, '''When -scrollbar is set to "auto", the
 scrollbars are shown only when needed.
 Additional modifiers can be used to force a
 scrollbar to be shown or hidden. For example,
@@ -591,15 +591,15 @@
 )
     win.place(x=30, y=150, width=190, height=100)
 
-    rh = Tix.ResizeHandle(top, bg='black',
-                          relief=Tix.RAISED,
+    rh = tkinter.tix.ResizeHandle(top, bg='black',
+                          relief=tkinter.tix.RAISED,
                           handlesize=8, gridded=1, minwidth=50, minheight=30)
-    btn = Tix.Button(bot, text='Reset', command=lambda w=rh, x=win: SText_reset(w,x))
+    btn = tkinter.tix.Button(bot, text='Reset', command=lambda w=rh, x=win: SText_reset(w,x))
     top.propagate(0)
-    msg.pack(fill=Tix.X)
-    btn.pack(anchor=Tix.CENTER)
-    top.pack(expand=1, fill=Tix.BOTH)
-    bot.pack(fill=Tix.BOTH)
+    msg.pack(fill=tkinter.tix.X)
+    btn.pack(anchor=tkinter.tix.CENTER)
+    top.pack(expand=1, fill=tkinter.tix.BOTH)
+    bot.pack(fill=tkinter.tix.BOTH)
     win.bind('<Map>', func=lambda arg=0, rh=rh, win=win:
              win.tk.call('tixDoWhenIdle', str(rh), 'attachwidget', str(win)))
 
@@ -612,8 +612,8 @@
     w = nb.page(name)
     options='label.padX 4'
 
-    pane = Tix.LabelFrame(w, label='Tix.PanedWindow', options=options)
-    note = Tix.LabelFrame(w, label='Tix.NoteBook', options=options)
+    pane = tkinter.tix.LabelFrame(w, label='Tix.PanedWindow', options=options)
+    note = tkinter.tix.LabelFrame(w, label='Tix.NoteBook', options=options)
 
     MkPanedWindow(pane.frame)
     MkNoteBook(note.frame)
@@ -626,29 +626,29 @@
     the sizes of several panes. The panes can be arranged either vertically
     or horizontally.
     """
-    msg = Tix.Message(w,
-                      relief=Tix.FLAT, width=240, anchor=Tix.N,
+    msg = tkinter.tix.Message(w,
+                      relief=tkinter.tix.FLAT, width=240, anchor=tkinter.tix.N,
                       text='The PanedWindow widget allows the user to interactively manipulate the sizes of several panes. The panes can be arranged either vertically or horizontally.')
-    group = Tix.LabelEntry(w, label='Newsgroup:', options='entry.width 25')
+    group = tkinter.tix.LabelEntry(w, label='Newsgroup:', options='entry.width 25')
     group.entry.insert(0,'comp.lang.python')
-    pane = Tix.PanedWindow(w, orientation='vertical')
+    pane = tkinter.tix.PanedWindow(w, orientation='vertical')
 
     p1 = pane.add('list', min=70, size=100)
     p2 = pane.add('text', min=70)
-    list = Tix.ScrolledListBox(p1)
-    text = Tix.ScrolledText(p2)
+    list = tkinter.tix.ScrolledListBox(p1)
+    text = tkinter.tix.ScrolledText(p2)
 
-    list.listbox.insert(Tix.END, "  12324 Re: Tkinter is good for your health")
-    list.listbox.insert(Tix.END, "+ 12325 Re: Tkinter is good for your health")
-    list.listbox.insert(Tix.END, "+ 12326 Re: Tix is even better for your health (Was: Tkinter is good...)")
-    list.listbox.insert(Tix.END, "  12327 Re: Tix is even better for your health (Was: Tkinter is good...)")
-    list.listbox.insert(Tix.END, "+ 12328 Re: Tix is even better for your health (Was: Tkinter is good...)")
-    list.listbox.insert(Tix.END, "  12329 Re: Tix is even better for your health (Was: Tkinter is good...)")
-    list.listbox.insert(Tix.END, "+ 12330 Re: Tix is even better for your health (Was: Tkinter is good...)")
+    list.listbox.insert(tkinter.tix.END, "  12324 Re: Tkinter is good for your health")
+    list.listbox.insert(tkinter.tix.END, "+ 12325 Re: Tkinter is good for your health")
+    list.listbox.insert(tkinter.tix.END, "+ 12326 Re: Tix is even better for your health (Was: Tkinter is good...)")
+    list.listbox.insert(tkinter.tix.END, "  12327 Re: Tix is even better for your health (Was: Tkinter is good...)")
+    list.listbox.insert(tkinter.tix.END, "+ 12328 Re: Tix is even better for your health (Was: Tkinter is good...)")
+    list.listbox.insert(tkinter.tix.END, "  12329 Re: Tix is even better for your health (Was: Tkinter is good...)")
+    list.listbox.insert(tkinter.tix.END, "+ 12330 Re: Tix is even better for your health (Was: Tkinter is good...)")
 
     text.text['bg'] = list.listbox['bg']
     text.text['wrap'] = 'none'
-    text.text.insert(Tix.END, """
+    text.text.insert(tkinter.tix.END, """
 Mon, 19 Jun 1995 11:39:52        comp.lang.python              Thread   34 of  220
 Lines 353       A new way to put text and bitmaps together iNo responses
 ioi@blue.seas.upenn.edu                Ioi K. Lam at University of Pennsylvania
@@ -661,71 +661,71 @@
 support the -image option. For example, you can display a text string string
 together with a bitmap, at the same time, inside a TK button widget.
 """)
-    list.pack(expand=1, fill=Tix.BOTH, padx=4, pady=6)
-    text.pack(expand=1, fill=Tix.BOTH, padx=4, pady=6)
+    list.pack(expand=1, fill=tkinter.tix.BOTH, padx=4, pady=6)
+    text.pack(expand=1, fill=tkinter.tix.BOTH, padx=4, pady=6)
 
-    msg.pack(side=Tix.TOP, padx=3, pady=3, fill=Tix.BOTH)
-    group.pack(side=Tix.TOP, padx=3, pady=3, fill=Tix.BOTH)
-    pane.pack(side=Tix.TOP, padx=3, pady=3, fill=Tix.BOTH, expand=1)
+    msg.pack(side=tkinter.tix.TOP, padx=3, pady=3, fill=tkinter.tix.BOTH)
+    group.pack(side=tkinter.tix.TOP, padx=3, pady=3, fill=tkinter.tix.BOTH)
+    pane.pack(side=tkinter.tix.TOP, padx=3, pady=3, fill=tkinter.tix.BOTH, expand=1)
 
 def MkNoteBook(w):
-    msg = Tix.Message(w,
-                      relief=Tix.FLAT, width=240, anchor=Tix.N,
+    msg = tkinter.tix.Message(w,
+                      relief=tkinter.tix.FLAT, width=240, anchor=tkinter.tix.N,
                       text='The NoteBook widget allows you to layout a complex interface into individual pages.')
     # prefix = Tix.OptionName(w)
     # if not prefix: prefix = ''
     # w.option_add('*' + prefix + '*TixNoteBook*tagPadX', 8)
-    options = "entry.width %d label.width %d label.anchor %s" % (10, 18, Tix.E)
+    options = "entry.width %d label.width %d label.anchor %s" % (10, 18, tkinter.tix.E)
 
-    nb = Tix.NoteBook(w, ipadx=6, ipady=6, options=options)
+    nb = tkinter.tix.NoteBook(w, ipadx=6, ipady=6, options=options)
     nb.add('hard_disk', label="Hard Disk", underline=0)
     nb.add('network', label="Network", underline=0)
 
     # Frame for the buttons that are present on all pages
-    common = Tix.Frame(nb.hard_disk)
-    common.pack(side=Tix.RIGHT, padx=2, pady=2, fill=Tix.Y)
+    common = tkinter.tix.Frame(nb.hard_disk)
+    common.pack(side=tkinter.tix.RIGHT, padx=2, pady=2, fill=tkinter.tix.Y)
     CreateCommonButtons(common)
 
     # Widgets belonging only to this page
-    a = Tix.Control(nb.hard_disk, value=12, label='Access Time: ')
-    w = Tix.Control(nb.hard_disk, value=400, label='Write Throughput: ')
-    r = Tix.Control(nb.hard_disk, value=400, label='Read Throughput: ')
-    c = Tix.Control(nb.hard_disk, value=1021, label='Capacity: ')
-    a.pack(side=Tix.TOP, padx=20, pady=2)
-    w.pack(side=Tix.TOP, padx=20, pady=2)
-    r.pack(side=Tix.TOP, padx=20, pady=2)
-    c.pack(side=Tix.TOP, padx=20, pady=2)
+    a = tkinter.tix.Control(nb.hard_disk, value=12, label='Access Time: ')
+    w = tkinter.tix.Control(nb.hard_disk, value=400, label='Write Throughput: ')
+    r = tkinter.tix.Control(nb.hard_disk, value=400, label='Read Throughput: ')
+    c = tkinter.tix.Control(nb.hard_disk, value=1021, label='Capacity: ')
+    a.pack(side=tkinter.tix.TOP, padx=20, pady=2)
+    w.pack(side=tkinter.tix.TOP, padx=20, pady=2)
+    r.pack(side=tkinter.tix.TOP, padx=20, pady=2)
+    c.pack(side=tkinter.tix.TOP, padx=20, pady=2)
 
-    common = Tix.Frame(nb.network)
-    common.pack(side=Tix.RIGHT, padx=2, pady=2, fill=Tix.Y)
+    common = tkinter.tix.Frame(nb.network)
+    common.pack(side=tkinter.tix.RIGHT, padx=2, pady=2, fill=tkinter.tix.Y)
     CreateCommonButtons(common)
 
-    a = Tix.Control(nb.network, value=12, label='Access Time: ')
-    w = Tix.Control(nb.network, value=400, label='Write Throughput: ')
-    r = Tix.Control(nb.network, value=400, label='Read Throughput: ')
-    c = Tix.Control(nb.network, value=1021, label='Capacity: ')
-    u = Tix.Control(nb.network, value=10, label='Users: ')
-    a.pack(side=Tix.TOP, padx=20, pady=2)
-    w.pack(side=Tix.TOP, padx=20, pady=2)
-    r.pack(side=Tix.TOP, padx=20, pady=2)
-    c.pack(side=Tix.TOP, padx=20, pady=2)
-    u.pack(side=Tix.TOP, padx=20, pady=2)
+    a = tkinter.tix.Control(nb.network, value=12, label='Access Time: ')
+    w = tkinter.tix.Control(nb.network, value=400, label='Write Throughput: ')
+    r = tkinter.tix.Control(nb.network, value=400, label='Read Throughput: ')
+    c = tkinter.tix.Control(nb.network, value=1021, label='Capacity: ')
+    u = tkinter.tix.Control(nb.network, value=10, label='Users: ')
+    a.pack(side=tkinter.tix.TOP, padx=20, pady=2)
+    w.pack(side=tkinter.tix.TOP, padx=20, pady=2)
+    r.pack(side=tkinter.tix.TOP, padx=20, pady=2)
+    c.pack(side=tkinter.tix.TOP, padx=20, pady=2)
+    u.pack(side=tkinter.tix.TOP, padx=20, pady=2)
 
-    msg.pack(side=Tix.TOP, padx=3, pady=3, fill=Tix.BOTH)
-    nb.pack(side=Tix.TOP, padx=5, pady=5, fill=Tix.BOTH, expand=1)
+    msg.pack(side=tkinter.tix.TOP, padx=3, pady=3, fill=tkinter.tix.BOTH)
+    nb.pack(side=tkinter.tix.TOP, padx=5, pady=5, fill=tkinter.tix.BOTH, expand=1)
 
 def CreateCommonButtons(f):
-    ok = Tix.Button(f, text='OK', width = 6)
-    cancel = Tix.Button(f, text='Cancel', width = 6)
-    ok.pack(side=Tix.TOP, padx=2, pady=2)
-    cancel.pack(side=Tix.TOP, padx=2, pady=2)
+    ok = tkinter.tix.Button(f, text='OK', width = 6)
+    cancel = tkinter.tix.Button(f, text='Cancel', width = 6)
+    ok.pack(side=tkinter.tix.TOP, padx=2, pady=2)
+    cancel.pack(side=tkinter.tix.TOP, padx=2, pady=2)
 
 def MkDirList(nb, name):
     w = nb.page(name)
     options = "label.padX 4"
 
-    dir = Tix.LabelFrame(w, label='Tix.DirList', options=options)
-    fsbox = Tix.LabelFrame(w, label='Tix.ExFileSelectBox', options=options)
+    dir = tkinter.tix.LabelFrame(w, label='Tix.DirList', options=options)
+    fsbox = tkinter.tix.LabelFrame(w, label='Tix.ExFileSelectBox', options=options)
     MkDirListWidget(dir.frame)
     MkExFileWidget(fsbox.frame)
     dir.form(top=0, left=0, right='%40', bottom=-1)
@@ -736,23 +736,23 @@
     system directory and makes it easy for the user to choose and access
     directories.
     """
-    msg = Tix.Message(w,
-                      relief=Tix.FLAT, width=240, anchor=Tix.N,
+    msg = tkinter.tix.Message(w,
+                      relief=tkinter.tix.FLAT, width=240, anchor=tkinter.tix.N,
                       text='The Tix DirList widget gives a graphical representation of the file system directory and makes it easy for the user to choose and access directories.')
-    dirlist = Tix.DirList(w, options='hlist.padY 1 hlist.width 25 hlist.height 16')
-    msg.pack(side=Tix.TOP, expand=1, fill=Tix.BOTH, padx=3, pady=3)
-    dirlist.pack(side=Tix.TOP, padx=3, pady=3)
+    dirlist = tkinter.tix.DirList(w, options='hlist.padY 1 hlist.width 25 hlist.height 16')
+    msg.pack(side=tkinter.tix.TOP, expand=1, fill=tkinter.tix.BOTH, padx=3, pady=3)
+    dirlist.pack(side=tkinter.tix.TOP, padx=3, pady=3)
 
 def MkExFileWidget(w):
     """The TixExFileSelectBox widget is more user friendly than the Motif
     style FileSelectBox.  """
-    msg = Tix.Message(w,
-                      relief=Tix.FLAT, width=240, anchor=Tix.N,
+    msg = tkinter.tix.Message(w,
+                      relief=tkinter.tix.FLAT, width=240, anchor=tkinter.tix.N,
                       text='The Tix ExFileSelectBox widget is more user friendly than the Motif style FileSelectBox.')
     # There's a bug in the ComboBoxes - the scrolledlistbox is destroyed
-    box = Tix.ExFileSelectBox(w, bd=2, relief=Tix.RAISED)
-    msg.pack(side=Tix.TOP, expand=1, fill=Tix.BOTH, padx=3, pady=3)
-    box.pack(side=Tix.TOP, padx=3, pady=3)
+    box = tkinter.tix.ExFileSelectBox(w, bd=2, relief=tkinter.tix.RAISED)
+    msg.pack(side=tkinter.tix.TOP, expand=1, fill=tkinter.tix.BOTH, padx=3, pady=3)
+    box.pack(side=tkinter.tix.TOP, padx=3, pady=3)
 
 ###
 ### List of all the demos we want to show off
@@ -875,39 +875,39 @@
     w = nb.page(name)
     options = "label.padX 4"
 
-    pane = Tix.PanedWindow(w, orientation='horizontal')
-    pane.pack(side=Tix.TOP, expand=1, fill=Tix.BOTH)
+    pane = tkinter.tix.PanedWindow(w, orientation='horizontal')
+    pane.pack(side=tkinter.tix.TOP, expand=1, fill=tkinter.tix.BOTH)
     f1 = pane.add('list', expand='1')
     f2 = pane.add('text', expand='5')
     f1['relief'] = 'flat'
     f2['relief'] = 'flat'
 
-    lab = Tix.LabelFrame(f1, label='Select a sample program:')
-    lab.pack(side=Tix.TOP, expand=1, fill=Tix.BOTH, padx=5, pady=5)
-    lab1 = Tix.LabelFrame(f2, label='Source:')
-    lab1.pack(side=Tix.TOP, expand=1, fill=Tix.BOTH, padx=5, pady=5)
+    lab = tkinter.tix.LabelFrame(f1, label='Select a sample program:')
+    lab.pack(side=tkinter.tix.TOP, expand=1, fill=tkinter.tix.BOTH, padx=5, pady=5)
+    lab1 = tkinter.tix.LabelFrame(f2, label='Source:')
+    lab1.pack(side=tkinter.tix.TOP, expand=1, fill=tkinter.tix.BOTH, padx=5, pady=5)
 
-    slb = Tix.Tree(lab.frame, options='hlist.width 20')
-    slb.pack(side=Tix.TOP, expand=1, fill=Tix.BOTH, padx=5)
+    slb = tkinter.tix.Tree(lab.frame, options='hlist.width 20')
+    slb.pack(side=tkinter.tix.TOP, expand=1, fill=tkinter.tix.BOTH, padx=5)
 
-    stext = Tix.ScrolledText(lab1.frame, name='stext')
+    stext = tkinter.tix.ScrolledText(lab1.frame, name='stext')
     font = root.tk.eval('tix option get fixed_font')
     stext.text.config(font=font)
 
-    frame = Tix.Frame(lab1.frame, name='frame')
+    frame = tkinter.tix.Frame(lab1.frame, name='frame')
 
-    run = Tix.Button(frame, text='Run ...', name='run')
-    view = Tix.Button(frame, text='View Source ...', name='view')
-    run.pack(side=Tix.LEFT, expand=0, fill=Tix.NONE)
-    view.pack(side=Tix.LEFT, expand=0, fill=Tix.NONE)
+    run = tkinter.tix.Button(frame, text='Run ...', name='run')
+    view = tkinter.tix.Button(frame, text='View Source ...', name='view')
+    run.pack(side=tkinter.tix.LEFT, expand=0, fill=tkinter.tix.NONE)
+    view.pack(side=tkinter.tix.LEFT, expand=0, fill=tkinter.tix.NONE)
 
     stext.text['bg'] = slb.hlist['bg']
     stext.text['state'] = 'disabled'
     stext.text['wrap'] = 'none'
     stext.text['width'] = 80
 
-    frame.pack(side=Tix.BOTTOM, expand=0, fill=Tix.X, padx=7)
-    stext.pack(side=Tix.TOP, expand=0, fill=Tix.BOTH, padx=7)
+    frame.pack(side=tkinter.tix.BOTTOM, expand=0, fill=tkinter.tix.X, padx=7)
+    stext.pack(side=tkinter.tix.TOP, expand=0, fill=tkinter.tix.BOTH, padx=7)
 
     slb.hlist['separator'] = '.'
     slb.hlist['width'] = 25
@@ -922,13 +922,13 @@
 
     for type in ['widget', 'image']:
         if type != 'widget':
-            x = Tix.Frame(slb.hlist, bd=2, height=2, width=150,
-                          relief=Tix.SUNKEN, bg=slb.hlist['bg'])
-            slb.hlist.add_child(itemtype=Tix.WINDOW, window=x, state='disabled')
-        x = slb.hlist.add_child(itemtype=Tix.TEXT, state='disabled',
+            x = tkinter.tix.Frame(slb.hlist, bd=2, height=2, width=150,
+                          relief=tkinter.tix.SUNKEN, bg=slb.hlist['bg'])
+            slb.hlist.add_child(itemtype=tkinter.tix.WINDOW, window=x, state='disabled')
+        x = slb.hlist.add_child(itemtype=tkinter.tix.TEXT, state='disabled',
                                 text=comments[type])
         for key in stypes[type]:
-            slb.hlist.add_child(x, itemtype=Tix.TEXT, data=key,
+            slb.hlist.add_child(x, itemtype=tkinter.tix.TEXT, data=key,
                                 text=key)
     slb.hlist.selection_clear()
 
@@ -955,12 +955,12 @@
 
     if action == 'run':
         exec('import ' + prog)
-        w = Tix.Toplevel()
+        w = tkinter.tix.Toplevel()
         w.title(title)
         rtn = eval(prog + '.RunSample')
         rtn(w)
     elif action == 'view':
-        w = Tix.Toplevel()
+        w = tkinter.tix.Toplevel()
         w.title('Source view: ' + title)
         LoadFile(w, demo.dir + '/samples/' + prog + '.py')
     elif action == 'browse':
@@ -968,8 +968,8 @@
 
 def LoadFile(w, fname):
     global root
-    b = Tix.Button(w, text='Close', command=w.destroy)
-    t = Tix.ScrolledText(w)
+    b = tkinter.tix.Button(w, text='Close', command=w.destroy)
+    t = tkinter.tix.ScrolledText(w)
     #    b.form(left=0, bottom=0, padx=4, pady=4)
     #    t.form(left=0, bottom=b, right='-0', top=0)
     t.pack()
@@ -985,18 +985,18 @@
 def ReadFile(w, fname):
     old_state = w['state']
     w['state'] = 'normal'
-    w.delete('0.0', Tix.END)
+    w.delete('0.0', tkinter.tix.END)
 
     try:
         f = open(fname)
         lines = f.readlines()
         for s in lines:
-            w.insert(Tix.END, s)
+            w.insert(tkinter.tix.END, s)
         f.close()
     finally:
 #       w.see('1.0')
         w['state'] = old_state
 
 if __name__ == '__main__':
-    root = Tix.Tk()
+    root = tkinter.tix.Tk()
     RunMain(root)
diff --git a/Demo/tkinter/guido/AttrDialog.py b/Demo/tkinter/guido/AttrDialog.py
index 921c105..5508e3b 100755
--- a/Demo/tkinter/guido/AttrDialog.py
+++ b/Demo/tkinter/guido/AttrDialog.py
@@ -12,7 +12,7 @@
 # -- totally static, though different between PackDialog and WidgetDialog
 #    (but even that could be unified)
 
-from Tkinter import *
+from tkinter import *
 
 class Option:
 
diff --git a/Demo/tkinter/guido/ManPage.py b/Demo/tkinter/guido/ManPage.py
index 1266f1c..a9309a3 100755
--- a/Demo/tkinter/guido/ManPage.py
+++ b/Demo/tkinter/guido/ManPage.py
@@ -1,9 +1,9 @@
 # Widget to display a man page
 
 import re
-from Tkinter import *
-from Tkinter import _tkinter
-from ScrolledText import ScrolledText
+from tkinter import *
+from tkinter import _tkinter
+from tkinter.scrolledtext import ScrolledText
 
 # XXX These fonts may have to be changed to match your system
 BOLDFONT = '*-Courier-Bold-R-Normal-*-120-*'
diff --git a/Demo/tkinter/guido/MimeViewer.py b/Demo/tkinter/guido/MimeViewer.py
index 7494425..11701cd 100755
--- a/Demo/tkinter/guido/MimeViewer.py
+++ b/Demo/tkinter/guido/MimeViewer.py
@@ -5,8 +5,8 @@
 
 import string
 from types import *
-from Tkinter import *
-from ScrolledText import ScrolledText
+from tkinter import *
+from tkinter.scrolledtext import ScrolledText
 
 class MimeViewer:
     def __init__(self, parent, title, msg):
diff --git a/Demo/tkinter/guido/ShellWindow.py b/Demo/tkinter/guido/ShellWindow.py
index c1d56ef..fffcbc5 100755
--- a/Demo/tkinter/guido/ShellWindow.py
+++ b/Demo/tkinter/guido/ShellWindow.py
@@ -1,9 +1,9 @@
 import os
 import sys
 import string
-from Tkinter import *
-from ScrolledText import ScrolledText
-from Dialog import Dialog
+from tkinter import *
+from tkinter.scrolledtext import ScrolledText
+from tkinter.dialog import Dialog
 import signal
 
 BUFSIZE = 512
diff --git a/Demo/tkinter/guido/brownian.py b/Demo/tkinter/guido/brownian.py
index 8007f14..7ab3e67 100644
--- a/Demo/tkinter/guido/brownian.py
+++ b/Demo/tkinter/guido/brownian.py
@@ -1,6 +1,6 @@
 # Brownian motion -- an example of a multi-threaded Tkinter program.
 
-from Tkinter import *
+from tkinter import *
 import random
 import threading
 import time
diff --git a/Demo/tkinter/guido/brownian2.py b/Demo/tkinter/guido/brownian2.py
index 281a645..dc1d43a 100644
--- a/Demo/tkinter/guido/brownian2.py
+++ b/Demo/tkinter/guido/brownian2.py
@@ -1,7 +1,7 @@
 # Brownian motion -- an example of a NON multi-threaded Tkinter program ;)
 # By Michele Simoniato, inspired by brownian.py
 
-from Tkinter import *
+from tkinter import *
 import random
 import sys
 
diff --git a/Demo/tkinter/guido/canvasevents.py b/Demo/tkinter/guido/canvasevents.py
index 74ed76f..aeb0eb1 100644
--- a/Demo/tkinter/guido/canvasevents.py
+++ b/Demo/tkinter/guido/canvasevents.py
@@ -1,6 +1,6 @@
 #! /usr/bin/env python
 
-from Tkinter import *
+from tkinter import *
 from Canvas import Oval, Group, CanvasText
 
 
diff --git a/Demo/tkinter/guido/dialog.py b/Demo/tkinter/guido/dialog.py
index 426eca4..1832ba4 100755
--- a/Demo/tkinter/guido/dialog.py
+++ b/Demo/tkinter/guido/dialog.py
@@ -4,7 +4,7 @@
 # optional bitmap, and any number of buttons.
 # Cf. Ousterhout, Tcl and the Tk Toolkit, Figs. 27.2-3, pp. 269-270.
 
-from Tkinter import *
+from tkinter import *
 import sys
 
 
diff --git a/Demo/tkinter/guido/electrons.py b/Demo/tkinter/guido/electrons.py
index fdc558f..e3bf468 100755
--- a/Demo/tkinter/guido/electrons.py
+++ b/Demo/tkinter/guido/electrons.py
@@ -11,7 +11,7 @@
 # /usr/include/X11/bitmaps for samples); it is displayed as the
 # background of the animation.  Default is no bitmap.
 
-from Tkinter import *
+from tkinter import *
 import random
 
 
diff --git a/Demo/tkinter/guido/hanoi.py b/Demo/tkinter/guido/hanoi.py
index 58ba1d1..a29b1d7 100755
--- a/Demo/tkinter/guido/hanoi.py
+++ b/Demo/tkinter/guido/hanoi.py
@@ -10,7 +10,7 @@
 # background of the animation.  Default is no bitmap.
 
 # This uses Steen Lumholt's Tk interface
-from Tkinter import *
+from tkinter import *
 
 
 # Basic Towers-of-Hanoi algorithm: move n pieces from a to b, using c
diff --git a/Demo/tkinter/guido/hello.py b/Demo/tkinter/guido/hello.py
index 358a7ec..f10fb7a 100755
--- a/Demo/tkinter/guido/hello.py
+++ b/Demo/tkinter/guido/hello.py
@@ -1,7 +1,7 @@
 # Display hello, world in a button; clicking it quits the program
 
 import sys
-from Tkinter import *
+from tkinter import *
 
 def main():
     root = Tk()
diff --git a/Demo/tkinter/guido/imagedraw.py b/Demo/tkinter/guido/imagedraw.py
index d3dba45..a168831 100755
--- a/Demo/tkinter/guido/imagedraw.py
+++ b/Demo/tkinter/guido/imagedraw.py
@@ -1,6 +1,6 @@
 """Draw on top of an image"""
 
-from Tkinter import *
+from tkinter import *
 import sys
 
 def main():
diff --git a/Demo/tkinter/guido/imageview.py b/Demo/tkinter/guido/imageview.py
index d6efed0..276858a 100755
--- a/Demo/tkinter/guido/imageview.py
+++ b/Demo/tkinter/guido/imageview.py
@@ -1,4 +1,4 @@
-from Tkinter import *
+from tkinter import *
 import sys
 
 def main():
diff --git a/Demo/tkinter/guido/kill.py b/Demo/tkinter/guido/kill.py
index 36b479d..36caba6 100755
--- a/Demo/tkinter/guido/kill.py
+++ b/Demo/tkinter/guido/kill.py
@@ -1,7 +1,7 @@
 #! /usr/bin/env python
 # Tkinter interface to Linux `kill' command.
 
-from Tkinter import *
+from tkinter import *
 from string import splitfields
 from string import split
 import subprocess
diff --git a/Demo/tkinter/guido/listtree.py b/Demo/tkinter/guido/listtree.py
index d28ce49..625d20e 100755
--- a/Demo/tkinter/guido/listtree.py
+++ b/Demo/tkinter/guido/listtree.py
@@ -3,7 +3,7 @@
 import sys
 import string
 
-from Tkinter import *
+from tkinter import *
 
 def listtree(master, app):
     list = Listbox(master, name='list')
diff --git a/Demo/tkinter/guido/mbox.py b/Demo/tkinter/guido/mbox.py
index 88b0b89..45c384e 100755
--- a/Demo/tkinter/guido/mbox.py
+++ b/Demo/tkinter/guido/mbox.py
@@ -9,7 +9,7 @@
 import string
 import mhlib
 
-from Tkinter import *
+from tkinter import *
 
 from dialog import dialog
 
diff --git a/Demo/tkinter/guido/newmenubardemo.py b/Demo/tkinter/guido/newmenubardemo.py
index 57bf13c..51c4e64 100644
--- a/Demo/tkinter/guido/newmenubardemo.py
+++ b/Demo/tkinter/guido/newmenubardemo.py
@@ -2,7 +2,7 @@
 
 """Play with the new Tk 8.0 toplevel menu option."""
 
-from Tkinter import *
+from tkinter import *
 
 class App:
 
diff --git a/Demo/tkinter/guido/optionmenu.py b/Demo/tkinter/guido/optionmenu.py
index 7365fa6..1e72aa5 100644
--- a/Demo/tkinter/guido/optionmenu.py
+++ b/Demo/tkinter/guido/optionmenu.py
@@ -1,6 +1,6 @@
 # option menu sample (Fredrik Lundh, September 1997)
 
-from Tkinter import *
+from tkinter import *
 
 root = Tk()
 
diff --git a/Demo/tkinter/guido/paint.py b/Demo/tkinter/guido/paint.py
index 7b2e814..65f2353 100644
--- a/Demo/tkinter/guido/paint.py
+++ b/Demo/tkinter/guido/paint.py
@@ -20,7 +20,7 @@
                                                 davem@magnet.com
 """
 
-from Tkinter import *
+from tkinter import *
 
 """paint.py: not exactly a paint program.. just a smooth line drawing demo."""
 
diff --git a/Demo/tkinter/guido/rmt.py b/Demo/tkinter/guido/rmt.py
index c177c72..7b3f700 100755
--- a/Demo/tkinter/guido/rmt.py
+++ b/Demo/tkinter/guido/rmt.py
@@ -11,7 +11,7 @@
 
 # XXX This should be written in a more Python-like style!!!
 
-from Tkinter import *
+from tkinter import *
 import sys
 
 # 1. Create basic application structure: menu bar on top of
diff --git a/Demo/tkinter/guido/solitaire.py b/Demo/tkinter/guido/solitaire.py
index a521c66..b2a2a66 100755
--- a/Demo/tkinter/guido/solitaire.py
+++ b/Demo/tkinter/guido/solitaire.py
@@ -25,7 +25,7 @@
 import math
 import random
 
-from Tkinter import *
+from tkinter import *
 from Canvas import Rectangle, CanvasText, Group, Window
 
 
diff --git a/Demo/tkinter/guido/sortvisu.py b/Demo/tkinter/guido/sortvisu.py
index 27dc9f0..0c71fc9 100644
--- a/Demo/tkinter/guido/sortvisu.py
+++ b/Demo/tkinter/guido/sortvisu.py
@@ -19,7 +19,7 @@
 """
 
 
-from Tkinter import *
+from tkinter import *
 from Canvas import Line, Rectangle
 import random
 
diff --git a/Demo/tkinter/guido/ss1.py b/Demo/tkinter/guido/ss1.py
index d957907..6a7aefc 100644
--- a/Demo/tkinter/guido/ss1.py
+++ b/Demo/tkinter/guido/ss1.py
@@ -485,7 +485,7 @@
         s = chr(m+ord('A')) + s
     return s
 
-import Tkinter as Tk
+import tkinter as Tk
 
 class SheetGUI:
 
diff --git a/Demo/tkinter/guido/svkill.py b/Demo/tkinter/guido/svkill.py
index b9d82ab..0dd9f95 100755
--- a/Demo/tkinter/guido/svkill.py
+++ b/Demo/tkinter/guido/svkill.py
@@ -2,7 +2,7 @@
 
 # Tkinter interface to SYSV `ps' and `kill' commands.
 
-from Tkinter import *
+from tkinter import *
 
 if TkVersion < 4.0:
     raise ImportError("This version of svkill requires Tk 4.0 or later")
diff --git a/Demo/tkinter/guido/switch.py b/Demo/tkinter/guido/switch.py
index 3b58f7c..3f43925 100644
--- a/Demo/tkinter/guido/switch.py
+++ b/Demo/tkinter/guido/switch.py
@@ -1,6 +1,6 @@
 # Show how to do switchable panels.
 
-from Tkinter import *
+from tkinter import *
 
 class App:
 
diff --git a/Demo/tkinter/guido/tkman.py b/Demo/tkinter/guido/tkman.py
index c84d889..52b6d03 100755
--- a/Demo/tkinter/guido/tkman.py
+++ b/Demo/tkinter/guido/tkman.py
@@ -6,7 +6,7 @@
 import os
 import string
 import re
-from Tkinter import *
+from tkinter import *
 from ManPage import ManPage
 
 MANNDIRLIST = ['/depot/sundry/man/mann','/usr/local/man/mann']
diff --git a/Demo/tkinter/matt/00-HELLO-WORLD.py b/Demo/tkinter/matt/00-HELLO-WORLD.py
index 20a2050..3b4092a 100644
--- a/Demo/tkinter/matt/00-HELLO-WORLD.py
+++ b/Demo/tkinter/matt/00-HELLO-WORLD.py
@@ -1,4 +1,4 @@
-from Tkinter import *
+from tkinter import *
 
 # note that there is no explicit call to start Tk.
 # Tkinter is smart enough to start the system if it's not already going.
diff --git a/Demo/tkinter/matt/animation-simple.py b/Demo/tkinter/matt/animation-simple.py
index 071bde7..4120d66 100644
--- a/Demo/tkinter/matt/animation-simple.py
+++ b/Demo/tkinter/matt/animation-simple.py
@@ -1,4 +1,4 @@
-from Tkinter import *
+from tkinter import *
 
 # This program shows how to use the "after" function to make animation.
 
diff --git a/Demo/tkinter/matt/animation-w-velocity-ctrl.py b/Demo/tkinter/matt/animation-w-velocity-ctrl.py
index 68eb1d0..88309ca 100644
--- a/Demo/tkinter/matt/animation-w-velocity-ctrl.py
+++ b/Demo/tkinter/matt/animation-w-velocity-ctrl.py
@@ -1,4 +1,4 @@
-from Tkinter import *
+from tkinter import *
 
 # this is the same as simple-demo-1.py, but uses
 # subclassing.
diff --git a/Demo/tkinter/matt/bind-w-mult-calls-p-type.py b/Demo/tkinter/matt/bind-w-mult-calls-p-type.py
index f744d26..af0ec81 100644
--- a/Demo/tkinter/matt/bind-w-mult-calls-p-type.py
+++ b/Demo/tkinter/matt/bind-w-mult-calls-p-type.py
@@ -1,4 +1,4 @@
-from Tkinter import *
+from tkinter import *
 import string
 
 # This program  shows how to use a simple type-in box
diff --git a/Demo/tkinter/matt/canvas-demo-simple.py b/Demo/tkinter/matt/canvas-demo-simple.py
index b677ccd..7f2c17b 100644
--- a/Demo/tkinter/matt/canvas-demo-simple.py
+++ b/Demo/tkinter/matt/canvas-demo-simple.py
@@ -1,4 +1,4 @@
-from Tkinter import *
+from tkinter import *
 
 # this program creates a canvas and puts a single polygon on the canvas
 
diff --git a/Demo/tkinter/matt/canvas-gridding.py b/Demo/tkinter/matt/canvas-gridding.py
index 84f4ea0..2f9d23a 100644
--- a/Demo/tkinter/matt/canvas-gridding.py
+++ b/Demo/tkinter/matt/canvas-gridding.py
@@ -1,4 +1,4 @@
-from Tkinter import *
+from tkinter import *
 
 # this is the same as simple-demo-1.py, but uses
 # subclassing.
diff --git a/Demo/tkinter/matt/canvas-moving-or-creating.py b/Demo/tkinter/matt/canvas-moving-or-creating.py
index 5327c08..edd64f7 100644
--- a/Demo/tkinter/matt/canvas-moving-or-creating.py
+++ b/Demo/tkinter/matt/canvas-moving-or-creating.py
@@ -1,4 +1,4 @@
-from Tkinter import *
+from tkinter import *
 
 # this file demonstrates a more sophisticated movement --
 # move dots or create new ones if you click outside the dots
diff --git a/Demo/tkinter/matt/canvas-moving-w-mouse.py b/Demo/tkinter/matt/canvas-moving-w-mouse.py
index 81785d8..21d724f 100644
--- a/Demo/tkinter/matt/canvas-moving-w-mouse.py
+++ b/Demo/tkinter/matt/canvas-moving-w-mouse.py
@@ -1,4 +1,4 @@
-from Tkinter import *
+from tkinter import *
 
 # this file demonstrates the movement of a single canvas item under mouse control
 
diff --git a/Demo/tkinter/matt/canvas-mult-item-sel.py b/Demo/tkinter/matt/canvas-mult-item-sel.py
index a4f267c..4875b44 100644
--- a/Demo/tkinter/matt/canvas-mult-item-sel.py
+++ b/Demo/tkinter/matt/canvas-mult-item-sel.py
@@ -1,4 +1,4 @@
-from Tkinter import *
+from tkinter import *
 
 # allows moving dots with multiple selection.
 
diff --git a/Demo/tkinter/matt/canvas-reading-tag-info.py b/Demo/tkinter/matt/canvas-reading-tag-info.py
index 75990c9..265f0a1 100644
--- a/Demo/tkinter/matt/canvas-reading-tag-info.py
+++ b/Demo/tkinter/matt/canvas-reading-tag-info.py
@@ -1,4 +1,4 @@
-from Tkinter import *
+from tkinter import *
 
 
 class Test(Frame):
diff --git a/Demo/tkinter/matt/canvas-w-widget-draw-el.py b/Demo/tkinter/matt/canvas-w-widget-draw-el.py
index 3cbf937..ca96583 100644
--- a/Demo/tkinter/matt/canvas-w-widget-draw-el.py
+++ b/Demo/tkinter/matt/canvas-w-widget-draw-el.py
@@ -1,4 +1,4 @@
-from Tkinter import *
+from tkinter import *
 
 # this file demonstrates the creation of widgets as part of a canvas object
 
diff --git a/Demo/tkinter/matt/canvas-with-scrollbars.py b/Demo/tkinter/matt/canvas-with-scrollbars.py
index b55215d..1c5681a 100644
--- a/Demo/tkinter/matt/canvas-with-scrollbars.py
+++ b/Demo/tkinter/matt/canvas-with-scrollbars.py
@@ -1,4 +1,4 @@
-from Tkinter import *
+from tkinter import *
 
 # This example program creates a scroling canvas, and demonstrates
 # how to tie scrollbars and canvses together. The mechanism
diff --git a/Demo/tkinter/matt/dialog-box.py b/Demo/tkinter/matt/dialog-box.py
index 0c71c3a..c0b8825 100644
--- a/Demo/tkinter/matt/dialog-box.py
+++ b/Demo/tkinter/matt/dialog-box.py
@@ -1,5 +1,5 @@
-from Tkinter import *
-from Dialog import Dialog
+from tkinter import *
+from tkinter.dialog import Dialog
 
 # this shows how to create a new window with a button in it
 # that can create new windows
diff --git a/Demo/tkinter/matt/entry-simple.py b/Demo/tkinter/matt/entry-simple.py
index 0bf4cab..1f55df5 100644
--- a/Demo/tkinter/matt/entry-simple.py
+++ b/Demo/tkinter/matt/entry-simple.py
@@ -1,4 +1,4 @@
-from Tkinter import *
+from tkinter import *
 import string
 
 # This program  shows how to use a simple type-in box
diff --git a/Demo/tkinter/matt/entry-with-shared-variable.py b/Demo/tkinter/matt/entry-with-shared-variable.py
index c7cd259..473a596 100644
--- a/Demo/tkinter/matt/entry-with-shared-variable.py
+++ b/Demo/tkinter/matt/entry-with-shared-variable.py
@@ -1,4 +1,4 @@
-from Tkinter import *
+from tkinter import *
 import string
 
 # This program  shows how to make a typein box shadow a program variable.
diff --git a/Demo/tkinter/matt/killing-window-w-wm.py b/Demo/tkinter/matt/killing-window-w-wm.py
index 23ac103..b4034d1 100644
--- a/Demo/tkinter/matt/killing-window-w-wm.py
+++ b/Demo/tkinter/matt/killing-window-w-wm.py
@@ -1,4 +1,4 @@
-from Tkinter import *
+from tkinter import *
 
 # This file shows how to trap the killing of a window
 # when the user uses window manager menus (typ. upper left hand corner
diff --git a/Demo/tkinter/matt/menu-all-types-of-entries.py b/Demo/tkinter/matt/menu-all-types-of-entries.py
index e4e4bfd..1e3bb8c 100644
--- a/Demo/tkinter/matt/menu-all-types-of-entries.py
+++ b/Demo/tkinter/matt/menu-all-types-of-entries.py
@@ -1,4 +1,4 @@
-from Tkinter import *
+from tkinter import *
 
 # some vocabulary to keep from getting confused. This terminology
 # is something I cooked up for this file, but follows the man pages
diff --git a/Demo/tkinter/matt/menu-simple.py b/Demo/tkinter/matt/menu-simple.py
index 2487561..a927c50 100644
--- a/Demo/tkinter/matt/menu-simple.py
+++ b/Demo/tkinter/matt/menu-simple.py
@@ -1,4 +1,4 @@
-from Tkinter import *
+from tkinter import *
 
 # some vocabulary to keep from getting confused. This terminology
 # is something I cooked up for this file, but follows the man pages
diff --git a/Demo/tkinter/matt/not-what-you-might-think-1.py b/Demo/tkinter/matt/not-what-you-might-think-1.py
index 7b20f02..85c65c8 100644
--- a/Demo/tkinter/matt/not-what-you-might-think-1.py
+++ b/Demo/tkinter/matt/not-what-you-might-think-1.py
@@ -1,4 +1,4 @@
-from Tkinter import *
+from tkinter import *
 
 
 class Test(Frame):
diff --git a/Demo/tkinter/matt/not-what-you-might-think-2.py b/Demo/tkinter/matt/not-what-you-might-think-2.py
index 9ee197c..4512063 100644
--- a/Demo/tkinter/matt/not-what-you-might-think-2.py
+++ b/Demo/tkinter/matt/not-what-you-might-think-2.py
@@ -1,4 +1,4 @@
-from Tkinter import *
+from tkinter import *
 
 
 class Test(Frame):
diff --git a/Demo/tkinter/matt/packer-and-placer-together.py b/Demo/tkinter/matt/packer-and-placer-together.py
index 84d3ee0..3cf6c45 100644
--- a/Demo/tkinter/matt/packer-and-placer-together.py
+++ b/Demo/tkinter/matt/packer-and-placer-together.py
@@ -1,4 +1,4 @@
-from Tkinter import *
+from tkinter import *
 
 # This is a program that tests the placer geom manager in conjunction with
 # the packer. The background (green) is packed, while the widget inside is placed
diff --git a/Demo/tkinter/matt/packer-simple.py b/Demo/tkinter/matt/packer-simple.py
index 1a505dd..64f61d5 100644
--- a/Demo/tkinter/matt/packer-simple.py
+++ b/Demo/tkinter/matt/packer-simple.py
@@ -1,4 +1,4 @@
-from Tkinter import *
+from tkinter import *
 
 
 class Test(Frame):
diff --git a/Demo/tkinter/matt/placer-simple.py b/Demo/tkinter/matt/placer-simple.py
index 992a8fc..6be0de9 100644
--- a/Demo/tkinter/matt/placer-simple.py
+++ b/Demo/tkinter/matt/placer-simple.py
@@ -1,4 +1,4 @@
-from Tkinter import *
+from tkinter import *
 
 # This is a program that tests the placer geom manager
 
diff --git a/Demo/tkinter/matt/pong-demo-1.py b/Demo/tkinter/matt/pong-demo-1.py
index 7fcf800..09f9f2e 100644
--- a/Demo/tkinter/matt/pong-demo-1.py
+++ b/Demo/tkinter/matt/pong-demo-1.py
@@ -1,4 +1,4 @@
-from Tkinter import *
+from tkinter import *
 
 import string
 
diff --git a/Demo/tkinter/matt/printing-coords-of-items.py b/Demo/tkinter/matt/printing-coords-of-items.py
index c74c1c3..26a4649 100644
--- a/Demo/tkinter/matt/printing-coords-of-items.py
+++ b/Demo/tkinter/matt/printing-coords-of-items.py
@@ -1,4 +1,4 @@
-from Tkinter import *
+from tkinter import *
 
 # this file demonstrates the creation of widgets as part of a canvas object
 
diff --git a/Demo/tkinter/matt/radiobutton-simple.py b/Demo/tkinter/matt/radiobutton-simple.py
index eeddb23..a2719b8 100644
--- a/Demo/tkinter/matt/radiobutton-simple.py
+++ b/Demo/tkinter/matt/radiobutton-simple.py
@@ -1,4 +1,4 @@
-from Tkinter import *
+from tkinter import *
 
 # This is a demo program that shows how to
 # create radio buttons and how to get other widgets to
diff --git a/Demo/tkinter/matt/rubber-band-box-demo-1.py b/Demo/tkinter/matt/rubber-band-box-demo-1.py
index 66b8f8b..48526d8 100644
--- a/Demo/tkinter/matt/rubber-band-box-demo-1.py
+++ b/Demo/tkinter/matt/rubber-band-box-demo-1.py
@@ -1,4 +1,4 @@
-from Tkinter import *
+from tkinter import *
 
 class Test(Frame):
     def printit(self):
diff --git a/Demo/tkinter/matt/rubber-line-demo-1.py b/Demo/tkinter/matt/rubber-line-demo-1.py
index b1c8e78..cfc4882 100644
--- a/Demo/tkinter/matt/rubber-line-demo-1.py
+++ b/Demo/tkinter/matt/rubber-line-demo-1.py
@@ -1,4 +1,4 @@
-from Tkinter import *
+from tkinter import *
 
 class Test(Frame):
     def printit(self):
diff --git a/Demo/tkinter/matt/slider-demo-1.py b/Demo/tkinter/matt/slider-demo-1.py
index 5662db9..687f8a3 100644
--- a/Demo/tkinter/matt/slider-demo-1.py
+++ b/Demo/tkinter/matt/slider-demo-1.py
@@ -1,4 +1,4 @@
-from Tkinter import *
+from tkinter import *
 
 # shows how to make a slider, set and get its value under program control
 
diff --git a/Demo/tkinter/matt/subclass-existing-widgets.py b/Demo/tkinter/matt/subclass-existing-widgets.py
index fc04859..ce97f35 100644
--- a/Demo/tkinter/matt/subclass-existing-widgets.py
+++ b/Demo/tkinter/matt/subclass-existing-widgets.py
@@ -1,4 +1,4 @@
-from Tkinter import *
+from tkinter import *
 
 # This is a program that makes a simple two button application
 
diff --git a/Demo/tkinter/matt/two-radio-groups.py b/Demo/tkinter/matt/two-radio-groups.py
index 52513ba..38b61b1 100644
--- a/Demo/tkinter/matt/two-radio-groups.py
+++ b/Demo/tkinter/matt/two-radio-groups.py
@@ -1,4 +1,4 @@
-from Tkinter import *
+from tkinter import *
 
 #       The way to think about this is that each radio button menu
 #       controls a different variable -- clicking on one of the
diff --git a/Demo/tkinter/matt/window-creation-more.py b/Demo/tkinter/matt/window-creation-more.py
index 3a4ce19..32c8b70 100644
--- a/Demo/tkinter/matt/window-creation-more.py
+++ b/Demo/tkinter/matt/window-creation-more.py
@@ -1,4 +1,4 @@
-from Tkinter import *
+from tkinter import *
 
 # this shows how to create a new window with a button in it
 # that can create new windows
diff --git a/Demo/tkinter/matt/window-creation-simple.py b/Demo/tkinter/matt/window-creation-simple.py
index fdf1dcc..f5e6230 100644
--- a/Demo/tkinter/matt/window-creation-simple.py
+++ b/Demo/tkinter/matt/window-creation-simple.py
@@ -1,4 +1,4 @@
-from Tkinter import *
+from tkinter import *
 
 # this shows how to spawn off new windows at a button press
 
diff --git a/Demo/tkinter/matt/window-creation-w-location.py b/Demo/tkinter/matt/window-creation-w-location.py
index af6f876..9f82367 100644
--- a/Demo/tkinter/matt/window-creation-w-location.py
+++ b/Demo/tkinter/matt/window-creation-w-location.py
@@ -1,4 +1,4 @@
-from Tkinter import *
+from tkinter import *
 
 import sys
 ##sys.path.append("/users/mjc4y/projects/python/tkinter/utils")