DOKK / manpages / debian 12 / tk-itk4-doc / itk.3itk.en
itk(3itk) [incr Tk] itk(3itk) 







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












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] 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.










class, object, object-oriented, mega-widget







  

    3.0
    itk