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+:mod:`tkinter.tix` --- Extension widgets for Tk
+===============================================
+
+.. module:: tkinter.tix
+   :synopsis: Tk Extension Widgets for Tkinter
+.. sectionauthor:: Mike Clarkson <mikeclarkson@users.sourceforge.net>
+
+
+.. index:: single: Tix
+
+The :mod:`tkinter.tix` (Tk Interface Extension) module provides an additional 
+rich set of widgets. Although the standard Tk library has many useful widgets, 
+they are far from complete. The :mod:`tkinter.tix` library provides most of the
+commonly needed widgets that are missing from standard Tk: :class:`HList`, 
+:class:`ComboBox`, :class:`Control` (a.k.a. SpinBox) and an assortment of 
+scrollable widgets. 
+:mod:`tkinter.tix` also includes many more widgets that are generally useful in
+a wide range of applications: :class:`NoteBook`, :class:`FileEntry`,
+:class:`PanedWindow`, etc; there are more than 40 of them.
+
+With all these new widgets, you can introduce new interaction techniques into
+applications, creating more useful and more intuitive user interfaces. You can
+design your application by choosing the most appropriate widgets to match the
+special needs of your application and users.
+
+.. seealso::
+
+   `Tix Homepage <http://tix.sourceforge.net/>`_
+      The home page for :mod:`Tix`.  This includes links to additional documentation
+      and downloads.
+
+   `Tix Man Pages <http://tix.sourceforge.net/dist/current/man/>`_
+      On-line version of the man pages and reference material.
+
+   `Tix Programming Guide <http://tix.sourceforge.net/dist/current/docs/tix-book/tix.book.html>`_
+      On-line version of the programmer's reference material.
+
+   `Tix Development Applications <http://tix.sourceforge.net/Tixapps/src/Tide.html>`_
+      Tix applications for development of Tix and Tkinter programs. Tide applications
+      work under Tk or Tkinter, and include :program:`TixInspect`, an inspector to
+      remotely modify and debug Tix/Tk/Tkinter applications.
+
+
+Using Tix
+---------
+
+
+.. class:: Tix(screenName[, baseName[, className]])
+
+   Toplevel widget of Tix which represents mostly the main window of an
+   application. It has an associated Tcl interpreter.
+
+   Classes in the :mod:`tkinter.tix` module subclasses the classes in the 
+   :mod:`tkinter`. The former imports the latter, so to use :mod:`tkinter.tix` 
+   with Tkinter, all you need to do is to import one module. In general, you 
+   can just import :mod:`tkinter.tix`, and replace the toplevel call to 
+   :class:`tkinter.Tk` with :class:`tix.Tk`::
+
+      from tkinter import tix
+      from tkinter.constants import *
+      root = tix.Tk()
+
+To use :mod:`tkinter.tix`, you must have the Tix widgets installed, usually
+alongside your installation of the Tk widgets. To test your installation, try
+the following::
+
+   from tkinter import tix
+   root = tix.Tk()
+   root.tk.eval('package require Tix')
+
+If this fails, you have a Tk installation problem which must be resolved before
+proceeding. Use the environment variable :envvar:`TIX_LIBRARY` to point to the
+installed Tix library directory, and make sure you have the dynamic
+object library (:file:`tix8183.dll` or :file:`libtix8183.so`) in  the same
+directory that contains your Tk dynamic object library (:file:`tk8183.dll` or
+:file:`libtk8183.so`). The directory with the dynamic object library should also
+have a file called :file:`pkgIndex.tcl` (case sensitive), which contains the
+line::
+
+   package ifneeded Tix 8.1 [list load "[file join $dir tix8183.dll]" Tix]
+
+
+Tix Widgets
+-----------
+
+`Tix <http://tix.sourceforge.net/dist/current/man/html/TixCmd/TixIntro.htm>`_
+introduces over 40 widget classes to the :mod:`Tkinter`  repertoire.  There is a
+demo of all the :mod:`tkinter.tix` widgets in the :file:`Demo/tix` directory of
+the standard distribution.
+
+.. The Python sample code is still being added to Python, hence commented out
+
+
+Basic Widgets
+^^^^^^^^^^^^^
+
+
+.. class:: Balloon()
+
+   A `Balloon
+   <http://tix.sourceforge.net/dist/current/man/html/TixCmd/tixBalloon.htm>`_ that
+   pops up over a widget to provide help.  When the user moves the cursor inside a
+   widget to which a Balloon widget has been bound, a small pop-up window with a
+   descriptive message will be shown on the screen.
+
+.. Python Demo of:
+.. \ulink{Balloon}{http://tix.sourceforge.net/dist/current/demos/samples/Balloon.tcl}
+
+
+.. class:: ButtonBox()
+
+   The `ButtonBox
+   <http://tix.sourceforge.net/dist/current/man/html/TixCmd/tixButtonBox.htm>`_
+   widget creates a box of buttons, such as is commonly used for ``Ok Cancel``.
+
+.. Python Demo of:
+.. \ulink{ButtonBox}{http://tix.sourceforge.net/dist/current/demos/samples/BtnBox.tcl}
+
+
+.. class:: ComboBox()
+
+   The `ComboBox
+   <http://tix.sourceforge.net/dist/current/man/html/TixCmd/tixComboBox.htm>`_
+   widget is similar to the combo box control in MS Windows. The user can select a
+   choice by either typing in the entry subwdget or selecting from the listbox
+   subwidget.
+
+.. Python Demo of:
+.. \ulink{ComboBox}{http://tix.sourceforge.net/dist/current/demos/samples/ComboBox.tcl}
+
+
+.. class:: Control()
+
+   The `Control
+   <http://tix.sourceforge.net/dist/current/man/html/TixCmd/tixControl.htm>`_
+   widget is also known as the :class:`SpinBox` widget. The user can adjust the
+   value by pressing the two arrow buttons or by entering the value directly into
+   the entry. The new value will be checked against the user-defined upper and
+   lower limits.
+
+.. Python Demo of:
+.. \ulink{Control}{http://tix.sourceforge.net/dist/current/demos/samples/Control.tcl}
+
+
+.. class:: LabelEntry()
+
+   The `LabelEntry
+   <http://tix.sourceforge.net/dist/current/man/html/TixCmd/tixLabelEntry.htm>`_
+   widget packages an entry widget and a label into one mega widget. It can be used
+   be used to simplify the creation of "entry-form" type of interface.
+
+.. Python Demo of:
+.. \ulink{LabelEntry}{http://tix.sourceforge.net/dist/current/demos/samples/LabEntry.tcl}
+
+
+.. class:: LabelFrame()
+
+   The `LabelFrame
+   <http://tix.sourceforge.net/dist/current/man/html/TixCmd/tixLabelFrame.htm>`_
+   widget packages a frame widget and a label into one mega widget.  To create
+   widgets inside a LabelFrame widget, one creates the new widgets relative to the
+   :attr:`frame` subwidget and manage them inside the :attr:`frame` subwidget.
+
+.. Python Demo of:
+.. \ulink{LabelFrame}{http://tix.sourceforge.net/dist/current/demos/samples/LabFrame.tcl}
+
+
+.. class:: Meter()
+
+   The `Meter
+   <http://tix.sourceforge.net/dist/current/man/html/TixCmd/tixMeter.htm>`_ widget
+   can be used to show the progress of a background job which may take a long time
+   to execute.
+
+.. Python Demo of:
+.. \ulink{Meter}{http://tix.sourceforge.net/dist/current/demos/samples/Meter.tcl}
+
+
+.. class:: OptionMenu()
+
+   The `OptionMenu
+   <http://tix.sourceforge.net/dist/current/man/html/TixCmd/tixOptionMenu.htm>`_
+   creates a menu button of options.
+
+.. Python Demo of:
+.. \ulink{OptionMenu}{http://tix.sourceforge.net/dist/current/demos/samples/OptMenu.tcl}
+
+
+.. class:: PopupMenu()
+
+   The `PopupMenu
+   <http://tix.sourceforge.net/dist/current/man/html/TixCmd/tixPopupMenu.htm>`_
+   widget can be used as a replacement of the ``tk_popup`` command. The advantage
+   of the :mod:`Tix` :class:`PopupMenu` widget is it requires less application code
+   to manipulate.
+
+.. Python Demo of:
+.. \ulink{PopupMenu}{http://tix.sourceforge.net/dist/current/demos/samples/PopMenu.tcl}
+
+
+.. class:: Select()
+
+   The `Select
+   <http://tix.sourceforge.net/dist/current/man/html/TixCmd/tixSelect.htm>`_ widget
+   is a container of button subwidgets. It can be used to provide radio-box or
+   check-box style of selection options for the user.
+
+.. Python Demo of:
+.. \ulink{Select}{http://tix.sourceforge.net/dist/current/demos/samples/Select.tcl}
+
+
+.. class:: StdButtonBox()
+
+   The `StdButtonBox
+   <http://tix.sourceforge.net/dist/current/man/html/TixCmd/tixStdButtonBox.htm>`_
+   widget is a group of standard buttons for Motif-like dialog boxes.
+
+.. Python Demo of:
+.. \ulink{StdButtonBox}{http://tix.sourceforge.net/dist/current/demos/samples/StdBBox.tcl}
+
+
+File Selectors
+^^^^^^^^^^^^^^
+
+
+.. class:: DirList()
+
+   The `DirList
+   <http://tix.sourceforge.net/dist/current/man/html/TixCmd/tixDirList.htm>`_
+   widget displays a list view of a directory, its previous directories and its
+   sub-directories. The user can choose one of the directories displayed in the
+   list or change to another directory.
+
+.. Python Demo of:
+.. \ulink{DirList}{http://tix.sourceforge.net/dist/current/demos/samples/DirList.tcl}
+
+
+.. class:: DirTree()
+
+   The `DirTree
+   <http://tix.sourceforge.net/dist/current/man/html/TixCmd/tixDirTree.htm>`_
+   widget displays a tree view of a directory, its previous directories and its
+   sub-directories. The user can choose one of the directories displayed in the
+   list or change to another directory.
+
+.. Python Demo of:
+.. \ulink{DirTree}{http://tix.sourceforge.net/dist/current/demos/samples/DirTree.tcl}
+
+
+.. class:: DirSelectDialog()
+
+   The `DirSelectDialog
+   <http://tix.sourceforge.net/dist/current/man/html/TixCmd/tixDirSelectDialog.htm>`_
+   widget presents the directories in the file system in a dialog window.  The user
+   can use this dialog window to navigate through the file system to select the
+   desired directory.
+
+.. Python Demo of:
+.. \ulink{DirSelectDialog}{http://tix.sourceforge.net/dist/current/demos/samples/DirDlg.tcl}
+
+
+.. class:: DirSelectBox()
+
+   The :class:`DirSelectBox` is similar to the standard Motif(TM)
+   directory-selection box. It is generally used for the user to choose a
+   directory.  DirSelectBox stores the directories mostly recently selected into
+   a ComboBox widget so that they can be quickly selected again.
+
+
+.. class:: ExFileSelectBox()
+
+   The `ExFileSelectBox
+   <http://tix.sourceforge.net/dist/current/man/html/TixCmd/tixExFileSelectBox.htm>`_
+   widget is usually embedded in a tixExFileSelectDialog widget. It provides an
+   convenient method for the user to select files. The style of the
+   :class:`ExFileSelectBox` widget is very similar to the standard file dialog on
+   MS Windows 3.1.
+
+.. Python Demo of:
+.. \ulink{ExFileSelectDialog}{http://tix.sourceforge.net/dist/current/demos/samples/EFileDlg.tcl}
+
+
+.. class:: FileSelectBox()
+
+   The `FileSelectBox
+   <http://tix.sourceforge.net/dist/current/man/html/TixCmd/tixFileSelectBox.htm>`_
+   is similar to the standard Motif(TM) file-selection box. It is generally used
+   for the user to choose a file. FileSelectBox stores the files mostly recently
+   selected into a :class:`ComboBox` widget so that they can be quickly selected
+   again.
+
+.. Python Demo of:
+.. \ulink{FileSelectDialog}{http://tix.sourceforge.net/dist/current/demos/samples/FileDlg.tcl}
+
+
+.. class:: FileEntry()
+
+   The `FileEntry
+   <http://tix.sourceforge.net/dist/current/man/html/TixCmd/tixFileEntry.htm>`_
+   widget can be used to input a filename. The user can type in the filename
+   manually. Alternatively, the user can press the button widget that sits next to
+   the entry, which will bring up a file selection dialog.
+
+.. Python Demo of:
+.. \ulink{FileEntry}{http://tix.sourceforge.net/dist/current/demos/samples/FileEnt.tcl}
+
+
+Hierachical ListBox
+^^^^^^^^^^^^^^^^^^^
+
+
+.. class:: HList()
+
+   The `HList
+   <http://tix.sourceforge.net/dist/current/man/html/TixCmd/tixHList.htm>`_ widget
+   can be used to display any data that have a hierarchical structure, for example,
+   file system directory trees. The list entries are indented and connected by
+   branch lines according to their places in the hierarchy.
+
+.. Python Demo of:
+.. \ulink{HList}{http://tix.sourceforge.net/dist/current/demos/samples/HList1.tcl}
+
+
+.. class:: CheckList()
+
+   The `CheckList
+   <http://tix.sourceforge.net/dist/current/man/html/TixCmd/tixCheckList.htm>`_
+   widget displays a list of items to be selected by the user. CheckList acts
+   similarly to the Tk checkbutton or radiobutton widgets, except it is capable of
+   handling many more items than checkbuttons or radiobuttons.
+
+.. Python Demo of:
+.. \ulink{ CheckList}{http://tix.sourceforge.net/dist/current/demos/samples/ChkList.tcl}
+.. Python Demo of:
+.. \ulink{ScrolledHList (1)}{http://tix.sourceforge.net/dist/current/demos/samples/SHList.tcl}
+.. Python Demo of:
+.. \ulink{ScrolledHList (2)}{http://tix.sourceforge.net/dist/current/demos/samples/SHList2.tcl}
+
+
+.. class:: Tree()
+
+   The `Tree
+   <http://tix.sourceforge.net/dist/current/man/html/TixCmd/tixTree.htm>`_ widget
+   can be used to display hierarchical data in a tree form. The user can adjust the
+   view of the tree by opening or closing parts of the tree.
+
+.. Python Demo of:
+.. \ulink{Tree}{http://tix.sourceforge.net/dist/current/demos/samples/Tree.tcl}
+.. Python Demo of:
+.. \ulink{Tree (Dynamic)}{http://tix.sourceforge.net/dist/current/demos/samples/DynTree.tcl}
+
+
+Tabular ListBox
+^^^^^^^^^^^^^^^
+
+
+.. class:: TList()
+
+   The `TList
+   <http://tix.sourceforge.net/dist/current/man/html/TixCmd/tixTList.htm>`_ widget
+   can be used to display data in a tabular format. The list entries of a
+   :class:`TList` widget are similar to the entries in the Tk listbox widget.  The
+   main differences are (1) the :class:`TList` widget can display the list entries
+   in a two dimensional format and (2) you can use graphical images as well as
+   multiple colors and fonts for the list entries.
+
+.. Python Demo of:
+.. \ulink{ScrolledTList (1)}{http://tix.sourceforge.net/dist/current/demos/samples/STList1.tcl}
+.. Python Demo of:
+.. \ulink{ScrolledTList (2)}{http://tix.sourceforge.net/dist/current/demos/samples/STList2.tcl}
+.. Grid has yet to be added to Python
+.. \subsubsection{Grid Widget}
+.. Python Demo of:
+.. \ulink{Simple Grid}{http://tix.sourceforge.net/dist/current/demos/samples/SGrid0.tcl}
+.. Python Demo of:
+.. \ulink{ScrolledGrid}{http://tix.sourceforge.net/dist/current/demos/samples/SGrid1.tcl}
+.. Python Demo of:
+.. \ulink{Editable Grid}{http://tix.sourceforge.net/dist/current/demos/samples/EditGrid.tcl}
+
+
+Manager Widgets
+^^^^^^^^^^^^^^^
+
+
+.. class:: PanedWindow()
+
+   The `PanedWindow
+   <http://tix.sourceforge.net/dist/current/man/html/TixCmd/tixPanedWindow.htm>`_
+   widget allows the user to interactively manipulate the sizes of several panes.
+   The panes can be arranged either vertically or horizontally.  The user changes
+   the sizes of the panes by dragging the resize handle between two panes.
+
+.. Python Demo of:
+.. \ulink{PanedWindow}{http://tix.sourceforge.net/dist/current/demos/samples/PanedWin.tcl}
+
+
+.. class:: ListNoteBook()
+
+   The `ListNoteBook
+   <http://tix.sourceforge.net/dist/current/man/html/TixCmd/tixListNoteBook.htm>`_
+   widget is very similar to the :class:`TixNoteBook` widget: it can be used to
+   display many windows in a limited space using a notebook metaphor. The notebook
+   is divided into a stack of pages (windows). At one time only one of these pages
+   can be shown. The user can navigate through these pages by choosing the name of
+   the desired page in the :attr:`hlist` subwidget.
+
+.. Python Demo of:
+.. \ulink{ListNoteBook}{http://tix.sourceforge.net/dist/current/demos/samples/ListNBK.tcl}
+
+
+.. class:: NoteBook()
+
+   The `NoteBook
+   <http://tix.sourceforge.net/dist/current/man/html/TixCmd/tixNoteBook.htm>`_
+   widget can be used to display many windows in a limited space using a notebook
+   metaphor. The notebook is divided into a stack of pages. At one time only one of
+   these pages can be shown. The user can navigate through these pages by choosing
+   the visual "tabs" at the top of the NoteBook widget.
+
+.. Python Demo of:
+.. \ulink{NoteBook}{http://tix.sourceforge.net/dist/current/demos/samples/NoteBook.tcl}
+
+.. \subsubsection{Scrolled Widgets}
+.. Python Demo of:
+.. \ulink{ScrolledListBox}{http://tix.sourceforge.net/dist/current/demos/samples/SListBox.tcl}
+.. Python Demo of:
+.. \ulink{ScrolledText}{http://tix.sourceforge.net/dist/current/demos/samples/SText.tcl}
+.. Python Demo of:
+.. \ulink{ScrolledWindow}{http://tix.sourceforge.net/dist/current/demos/samples/SWindow.tcl}
+.. Python Demo of:
+.. \ulink{Canvas Object View}{http://tix.sourceforge.net/dist/current/demos/samples/CObjView.tcl}
+
+
+Image Types
+^^^^^^^^^^^
+
+The :mod:`tkinter.tix` module adds:
+
+* `pixmap <http://tix.sourceforge.net/dist/current/man/html/TixCmd/pixmap.htm>`_
+  capabilities to all :mod:`tkinter.tix` and :mod:`tkinter` widgets to create 
+  color images from XPM files.
+
+  .. Python Demo of:
+  .. \ulink{XPM Image In Button}{http://tix.sourceforge.net/dist/current/demos/samples/Xpm.tcl}
+  .. Python Demo of:
+  .. \ulink{XPM Image In Menu}{http://tix.sourceforge.net/dist/current/demos/samples/Xpm1.tcl}
+
+* `Compound
+  <http://tix.sourceforge.net/dist/current/man/html/TixCmd/compound.htm>`_ image
+  types can be used to create images that consists of multiple horizontal lines;
+  each line is composed of a series of items (texts, bitmaps, images or spaces)
+  arranged from left to right. For example, a compound image can be used to
+  display a bitmap and a text string simultaneously in a Tk :class:`Button`
+  widget.
+
+  .. Python Demo of:
+  .. \ulink{Compound Image In Buttons}{http://tix.sourceforge.net/dist/current/demos/samples/CmpImg.tcl}
+  .. Python Demo of:
+  .. \ulink{Compound Image In NoteBook}{http://tix.sourceforge.net/dist/current/demos/samples/CmpImg2.tcl}
+  .. Python Demo of:
+  .. \ulink{Compound Image Notebook Color Tabs}{http://tix.sourceforge.net/dist/current/demos/samples/CmpImg4.tcl}
+  .. Python Demo of:
+  .. \ulink{Compound Image Icons}{http://tix.sourceforge.net/dist/current/demos/samples/CmpImg3.tcl}
+
+
+Miscellaneous Widgets
+^^^^^^^^^^^^^^^^^^^^^
+
+
+.. class:: InputOnly()
+
+   The `InputOnly
+   <http://tix.sourceforge.net/dist/current/man/html/TixCmd/tixInputOnly.htm>`_
+   widgets are to accept inputs from the user, which can be done with the ``bind``
+   command (Unix only).
+
+
+Form Geometry Manager
+^^^^^^^^^^^^^^^^^^^^^
+
+In addition, :mod:`tkinter.tix` augments :mod:`tkinter` by providing:
+
+
+.. class:: Form()
+
+   The `Form
+   <http://tix.sourceforge.net/dist/current/man/html/TixCmd/tixForm.htm>`_ geometry
+   manager based on attachment rules for all Tk widgets.
+
+
+Tix Commands
+------------
+
+
+.. class:: tixCommand()
+
+   The `tix commands
+   <http://tix.sourceforge.net/dist/current/man/html/TixCmd/tix.htm>`_ provide
+   access to miscellaneous elements of :mod:`Tix`'s internal state and the
+   :mod:`Tix` application context.  Most of the information manipulated by these
+   methods pertains to the application as a whole, or to a screen or display,
+   rather than to a particular window.
+
+   To view the current settings, the common usage is::
+
+      import Tix
+      root = Tix.Tk()
+      print(root.tix_configure())
+
+
+.. method:: tixCommand.tix_configure([cnf,] **kw)
+
+   Query or modify the configuration options of the Tix application context. If no
+   option is specified, returns a dictionary all of the available options.  If
+   option is specified with no value, then the method returns a list describing the
+   one named option (this list will be identical to the corresponding sublist of
+   the value returned if no option is specified).  If one or more option-value
+   pairs are specified, then the method modifies the given option(s) to have the
+   given value(s); in this case the method returns an empty string. Option may be
+   any of the configuration options.
+
+
+.. method:: tixCommand.tix_cget(option)
+
+   Returns the current value of the configuration option given by *option*. Option
+   may be any of the configuration options.
+
+
+.. method:: tixCommand.tix_getbitmap(name)
+
+   Locates a bitmap file of the name ``name.xpm`` or ``name`` in one of the bitmap
+   directories (see the :meth:`tix_addbitmapdir` method).  By using
+   :meth:`tix_getbitmap`, you can avoid hard coding the pathnames of the bitmap
+   files in your application. When successful, it returns the complete pathname of
+   the bitmap file, prefixed with the character ``@``.  The returned value can be
+   used to configure the ``bitmap`` option of the Tk and Tix widgets.
+
+
+.. method:: tixCommand.tix_addbitmapdir(directory)
+
+   Tix maintains a list of directories under which the :meth:`tix_getimage` and
+   :meth:`tix_getbitmap` methods will search for image files.  The standard bitmap
+   directory is :file:`$TIX_LIBRARY/bitmaps`. The :meth:`tix_addbitmapdir` method
+   adds *directory* into this list. By using this method, the image files of an
+   applications can also be located using the :meth:`tix_getimage` or
+   :meth:`tix_getbitmap` method.
+
+
+.. method:: tixCommand.tix_filedialog([dlgclass])
+
+   Returns the file selection dialog that may be shared among different calls from
+   this application.  This method will create a file selection dialog widget when
+   it is called the first time. This dialog will be returned by all subsequent
+   calls to :meth:`tix_filedialog`.  An optional dlgclass parameter can be passed
+   as a string to specified what type of file selection dialog widget is desired.
+   Possible options are ``tix``, ``FileSelectDialog`` or ``tixExFileSelectDialog``.
+
+
+.. method:: tixCommand.tix_getimage(self, name)
+
+   Locates an image file of the name :file:`name.xpm`, :file:`name.xbm` or
+   :file:`name.ppm` in one of the bitmap directories (see the
+   :meth:`tix_addbitmapdir` method above). If more than one file with the same name
+   (but different extensions) exist, then the image type is chosen according to the
+   depth of the X display: xbm images are chosen on monochrome displays and color
+   images are chosen on color displays. By using :meth:`tix_getimage`, you can
+   avoid hard coding the pathnames of the image files in your application. When
+   successful, this method returns the name of the newly created image, which can
+   be used to configure the ``image`` option of the Tk and Tix widgets.
+
+
+.. method:: tixCommand.tix_option_get(name)
+
+   Gets the options maintained by the Tix scheme mechanism.
+
+
+.. method:: tixCommand.tix_resetoptions(newScheme, newFontSet[, newScmPrio])
+
+   Resets the scheme and fontset of the Tix application to *newScheme* and
+   *newFontSet*, respectively.  This affects only those widgets created after this
+   call.  Therefore, it is best to call the resetoptions method before the creation
+   of any widgets in a Tix application.
+
+   The optional parameter *newScmPrio* can be given to reset the priority level of
+   the Tk options set by the Tix schemes.
+
+   Because of the way Tk handles the X option database, after Tix has been has
+   imported and inited, it is not possible to reset the color schemes and font sets
+   using the :meth:`tix_config` method. Instead, the :meth:`tix_resetoptions`
+   method must be used.