trusty (3) itk.3itk.gz

NAME

       itk - framework for building mega-widgets in Tcl/Tk

DESCRIPTION

       Mega-widgets  are  high-level  widgets  that are constructed using Tk widgets as component parts, usually
       without any C code.  A fileselectionbox, for example, may have a few listboxes, some  entry  widgets  and
       some  control  buttons.   These individual widgets are put together in a way that makes them act like one
       big widget.  A fileselectionbox mega-widget can be created with a  command  like:  fileselectionbox  .fsb
       -background  blue -foreground white Once it has been created, it can be reconfigured with a command like:
       .fsb configure -background green -foreground black and all of its internal components will change  color.
       Each  mega-widget  has  a  set  of  methods  that can be used to manipulate it.  For example, the current
       selection can be queried from a fileselectionbox like this: set fileName [.fsb get] In  effect,  a  mega-
       widget looks and acts exactly like a Tk widget, but is considerably easier to implement.

       [incr Tk]  is  a framework for building mega-widgets.  It uses [incr Tcl] to support the object paradigm,
       and adds base classes which provide default widget behaviors.

       All [incr Tk] widgets are derived from the Archetype base class.  This class manages  internal  component
       widgets, and provides methods like "configure" and "cget" to access configuration options.

       The  Widget  base class inherits everything from Archetype, and adds a Tk frame which acts as a container
       for the mega-widget.  It is used to build mega-widgets that sit inside of  other  frames  and  toplevels.
       Derived  classes  create  other  internal  components  and pack them into the "hull" frame created by the
       Widget base class.

       The Toplevel base class inherits everything from Archetype, but adds  a  Tk  toplevel  which  acts  as  a
       container  for  the mega-widget.  It is used to build mega-widgets, such as dialog boxes, that have their
       own toplevel window.  Derived classes create other internal components and  pack  them  into  the  "hull"
       toplevel created by the Toplevel base class.

[incr Widgets] LIBRARY

       [incr Widgets]  is a mega-widget library built using [incr Tk].  It can be used right out of the box, and
       contains more than 30 different widget classes, including:

       -      fileselectiondialog

       -      tabnotebook

       -      panedwindow

       -      combobox

       -      optionmenu

       -      scrolledlistbox

       -      scrolledframe

       -      messagedialog

       -      and many others...

       The catalog demo in the "iwidgets/demos" directory shows all of the available widgets  in  action.   Each
       widget class has its own man page describing the features available.

KEYWORDS

       class, object, object-oriented, mega-widget