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itk(n)                                            [incr Tk]                                           itk(n)



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:  fileselec-tionbox fileselectionbox
       tionbox .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  para-digm, paradigm,
       digm, and adds base classes which provide default widget behaviors.

       All  [incr Tk] widgets are derived from the Archetype base class.  This class manages internal compo-nent component
       nent 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  con-tainer container
       tainer  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 cre-ated created
       ated 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



itk                                                  3.0                                              itk(n)