Widgets
Widget is the generic name for the controllers, and
viewers provided by a window class
library. The term originated with the X
windows system. But it applies equally well (although it is
less used) in the other systems.
The following is a list of frequently used widgets. They are all
implemented for Tk. Other systems
provide similar things but often in combination.
- Frames
- Coloured rectangular regions. Use as containers for
grouping other widgets.
- Toplevels
- Frames used as the outermost container for an application.
- Labels
- Frames that display a text or bitmap.
- Buttons, checkbuttons and radio buttons
- Widgets with the features of labels that respond to the
mouse.
- Messages
- Similar to labels except that they display multiline
strings.
- Listboxes
- A listbox is a widget that displays a collection of strings
and allows the user to select one or more of them.
- Scrollbars
- A scrollbar controls the view in another widget.
- Scales
- A scale is a widget that displays an integer value and
allows the user to edit the value by
dragging a slider.
- Entries
- An entry allows a user to enter and edit a one line string.
- Menus and menubuttons
- Used to select from a fixed list. Menus can be popup,
cascading etc.
For more details on the widgets provided by a particular system
and how to use them consult the documentation.
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Last Changed: 9 May 1995