Purpose: collect information and pointers to what megawidgets are, how to write them, etc.
Occasionally these have been called meta-widgets rather than megawidgets.
A mega widget is NOT an attempt to create new, unique, widgets. Instead, it is an effort to combine existing widgets in ways that are commonly needed (or at the very least interesting to the person who is writing the megawidget).
See also Composite fields megawidgets.
See Adding User Data to Widgets the Megawidget Way.
Steve Uhler's 1996 Tcl workshop presentation slides on the search for the perfect megawidget can be found at http://www.best.com/%7Esau/mega/ .
282. Chengye Mao mailto:[email protected] has a web page which discusses building combined widgets (aka mega widgets) in pure Tcl at http://www.geocities.com/%7Echengye/comb.html .
Here are some of the megawidget frameworks of which I (LV) am aware:
What: tkBuilder
Where: http://sawpit.iwarp.com/
Description: Tool to facilitate building and testing Tcl/Tk interfaces and
applications. Simplifies management of widget hierarchies,
files, namespaces, and procedures. Generates Tcl/Tk code to be used
by programmers in applications of their own making.
Supports creation of Tk megawidgets.
Requires Tcl/TK 8.x and distributed under GPL.
Currently at version 1.0.2.
Updated: 03/2002
Contact: mailto:[email protected]
What: MegaWidget package
Where: http://www.purl.org/net/hobbs/tcl/script/widget/widget-0.9.tar.gz
Description: Tk 8.x megawidget capability.
While tested thru Tk 8.0b2, some problems still remained
under Windows with Tk 8.
Megawidgets included in this package are combobox, console,
hierarchy list display, progressbar, tabnotebook, validating
entry widget, and scrolledtext. Also, support for balloon help
and paned window management are included.
Updated: 03/2001
Contact: mailto:[email protected]
What: Miscellaneous Tcl procs (Kraus)
Where: http://mkextensions.sf.net/
Description: mkGeneric - a collection of Tcl 8 commands that contact
found missing. Includes a variety of math functions, list functions
programming constructs, output options, etc.
mkClasses - a Tcl object class and methods mechanism,
mkTables - a collection of Tcl scripts that treat lists as if they
were 'tables' (a list whose elements are themselves lists),
mkThreads - thread support for Tcl/Tk scripts,
mkWidgets - megawidget support for Tk, with MDI widget and
other goodies.
Updated: 11/2002
Contact: mailto:[email protected] (Michael Kraus)
What: MIT otcl megawidget system
Where: From the contact
Description: A simple otcl megawidget system. Unsupported.
Contact: mailto:[email protected] (Martin Andrews)
What: mwidx
Where: http://www.cs.man.ac.uk/~fellowsd/tcl/mwidx.html
Description: Megawidgets using cavnas windows as the framework.
Updated: 08/2001
Contact: mailto:[email protected] (Donal K. Fellows)
What: obTcl
Where: ftp://ftp.dynas.se/pub/tcl/obTcl.tar.gz
ftp://ftp.procplace.com/pub/tcl/sorted/packages-7.6/devel/obTcl-0.56.tar.gz
Description: A Tcl 7.[45] object and megawidget extension, supporting multiple
inheritance, three new storage classes, and fully transparent
Tk megawidgets. If you need a Tab/Notebook widget or a
Paned Window widget, but only want to use standard Tk, this
extension might be for you. Now has an optional loadable accelerator
module (which requires use of Tcl 7.5) .
Current version is 0.56.
Updated: 10/1998
Contact: mailto:[email protected] (Patik Floding)
What: Pool
Where: http://www.purl.org/NET/akupries/soft/pool/
http://www.purl.org/NET/akupries/soft/pool/download/pool2.2.tar.gz
Description: A personal library of Tcl procedures. Requires Tcl/Tk 8.x.
Contains calendar widgets, date, string, list and file manipulation
functions, option processing routines, url manipulation and
extraction routines, yet another OO (object-oriented) tcl based
system, and megawidget support.
Updated: 11/1999
Contact: mailto:[email protected] (Andreas Kupries)
What: scwoop
Where: http://jfontain.free.fr/scwoop40.htm
http://jfontain.free.fr/scwoop-4.0.tar.gz
http://jfontain.free.fr/scwoop-3.2.tar.gz
http://jfontain.free.fr/scwoop-2.6.tar.gz
Description: Simple Composite Widget Object Oriented Package is implemented
in a single sourcable file and uses simple techniques to provide
composite widget (mega widget) support to Tk. Uses stooop 4.1
and above. Runs on all Tcl 8.3 or higher supported platforms.
Full HTML doc, with live tclets, are provided at the web site.
Updated: 09/2001
Contact: mailto:[email protected] (Jean-Luc Fontaine)What: Snit's Not Incr Tcl
Where: http://www.wjduquette.com/snit
Description: See wiki page listed above. Snit provides simple object
and mega-widget support based on delegation rather than inheritance;
it's designed to work with anything that resembles a typical Tcl/Tk
object command. For example, a Snit megawidget can delegate methods and
options to Tk widgets, Incr Widgets, BWidgets, and just about anything
else.
What: Suchenwirth's Tcl code
Where: http://purl.org/thecliff/tcl/wiki/RichardSuchenwirth
Description: Richard has written a number of Wiki pages, pointed to by
the supplied URL. He covers code to detect or prevent a proc
from being redefined, a discussion of Lamda procs in Tcl,
a variety of algorithms implemented in Tcl and Tcl/Tk (which include
a simple balloon help, integer list generation, a cursor name
function, an integer to english/french/german name translater,
Unix file mode in letter notation (rwxr--r--), fraction math,
greatest common denominator, ip address, unix ls proc, simple
mail sender, max and min functions, morse code encoder/decoder,
converting numbers to commas, randomly selecting items from list,
Roman numeral conversion to and from integers, widget scrollbar
decorator, stack operations on lists) ISO country and language
codes to English, unit converters, adding Tcl minor subcommands
to commands, neat Tcl syntactic tricks that can be added using
the unknown proc, a keyboard widget which displays rows of buttons
representing the various characters to be inserted - particularly
useful for Unicode special character input, a Tk pane widget,
xbutton - a text and image button megawidget,
set of 7 bit ASCII input to Unicode string conversions using
a variety of targe languages (Arabic, Greek, Korean Hangul, Hebrew,
Japanese, and Russian),
a little Unicode editor,
Tcl tally gadget (used for counting strings, words, etc.),
Tcl 8.3 code which auto-detects UTF-16 by BOM in the first line
and reads the file into a string variable,
example of plain Tcl with Tk like calling style,
examples of APL like functionality in pure Tcl scripts,
code and discussion of base 64 encoding, code for doing syntactic
parsing, code to allow embedding C code directly into your C scripts
and have your program write the code to a file, compile and
then execute it, series of demos animating a train, moving
scenery, various sprites moving in the background, etc. .
Contact continues to write more code each day - just
stop by the web pages to see the latest list.
Updated: 07/1999
Contact: mailto:[email protected]
What: tablelist
Where: http://www.nemethi.de/
Description: This is a Multi-Column listbox designed for Tcl/Tk 8.x as
well as a general utility module for other megawidgets like
tablelist. This widget allows each column to be dynamically
sized and has several alignments. It supports a variety of
listbox like commands. It also comes with bindings so that
it acts like a listbox.
Currently at version 1.6 .
Updated: 08/2001
Contact: mailto:[email protected]
What: TkMegaWidget
Where: http://www.ignoranceisbliss.com/htdocs/tkmegawidget.html
ftp://ftp.procplace.com/pub/tcl/sorted/packages-7.6/devel/TkMegaWidget3.6g.tar.gz
ftp://ftp.procplace.com/pub/tcl/sorted/packages-7.6/devel/TkMegaWidget4.0b.tar.gz
Description: Support new Tcl/Tk widgets allowing you to attach minor commands
and options to a widget, or even a private interpreter.
Version 4.0b is available from the WWW page.
Updated: 07/2000
Contact: mailto:Unknown (Sven Delmas)
What: [incr Tk] Slate megawidget
Where: http://ptolemy.eecs.berkeley.edu/%7Ejohnr/code/slate/
Description: The Slate is an [incr Tcl] megawidget layered over the Tcl/Tk
canvas. It contains visual hierarchy, symbolic item aspects and
interaction support. Release 3.0alpha supports
Tcl 8.0 or [incr Tcl] 3.0.
Updated: 07/1998
Contact: mailto:[email protected] (John Reekie)
What: [incr Tk] [incr Widgets]
Where: http://www.sourceforege.net/projects/incrtcl/
http://www.tcltk.com/iwidgets/
ftp://ftp.procplace.com/pub/tcl/sorted/packages-7.6/devel/iwidgets2.0.1.tar.gz
http://www.maui.net/%7Edavygrvy/files/incr30_hlp.zip
http://www.maui.net/%7Edavygrvy/files/incr30_helptools.zip
http://ptolemy.eecs.berkeley.edu/%7Ejohnr/code/iwidgets/
Description: [incr Widgets] is an object-oriented megawidget set which is
extends Tcl/Tk, based on itcl 2.0 and itk. iwidgets
is included with itcl distribution. Version 2.0.1 is now
available from the WWW page. This should be included in the
itcl 2.1 distribution.
The maui site files are the itcl man pages reformatted into Windows
.hlp format. The helptools file are the scripts used to create
the hlp file.
The ptolemy site has some user written additional iwidgets.
Version 4.0.1 has been released as a stand alone tar file.
It still is dependent on itcl/itk - it is now just distributed
seperately.
Updated: 09/2002
Contact: mailto:[email protected] (Mark Ulferts)
mailto:[email protected] (David Gravereaux)
mailto:[email protected] (Marty Backe)
What: Pmw
Where: http://www.dscpl.com.au/pmw/
ftp://ftp.dscpl.com.au/pub/pmw/Pmw.0.8.tar.gz
http://www.dejanews.com/getdoc.xp?AN=423519318
http://pmwcontribd.sourceforge.net/
Description: A megawidget framework for constructing high-level
compound widgets in Python 1.5.2 using Tk 8.x. Contains of a set of
base classes for building megawidgets and a library of
megawidgets such as ComboBox, Dialog, ButtonBox, etc. Also
contains a python interface to BLT2.1's busy, graph and vector
commands. The PmwContribD web site provides several Pmw based Tkinter
widgets, including a ProgressMeter, basic TreeNavigator, and a GUI
application framework for creating simple GUI apps quickly.
Updated: 10/1999
Contact: mailto:[email protected] (Greg McFarlane)
mailto:[email protected] (Doug Hellmann)