Widget Commands

Preface
Introduction
- Widget
- Hierarchy
- General
- Specific
- Options
- Return Values
- Restrictions
Tutorial
Implementation
Commands
Options
Extensions
Changes

In Tcl/Tk, the interactive on-screen widgets are represented internally by appropriate commands which are adressed by strings, e. g. .text.

In Chicken/Tk, the widget commands are translated to Scheme procedures. Later on, the commands are invoked with symbols as sub-commands.

The procedure associated to the Tk root window is bound to the symbol tk.

For debugging purposes, there is a console which allows you to try the widget commands as easy as under the wish. Lower entry field is for input, upper text field is output. Try this:

(load "chickenTk.scm") ;; load the Tk extension
(start-tk)             ;; invoke Tk
(tk/console)           ;; your command window
(event-loop)           ;; interaction Scheme <-> Tk
(end-tk)               ;; kill Tk
(exit)                 ;; you're done.


		Widget Commands
		Widget Commands

	Preface Introduction Widget Hierarchy General Specific Options Return Values Restrictions Tutorial Implementation Commands Options Extensions Changes	In Tcl/Tk, the interactive on-screen widgets are represented internally by appropriate commands which are adressed by strings, e. g. `.text`. In Chicken/Tk, the widget commands are translated to Scheme procedures. Later on, the commands are invoked with symbols as sub-commands. The procedure associated to the Tk root window is bound to the symbol `tk`. For debugging purposes, there is a console which allows you to try the widget commands as easy as under the wish. Lower entry field is for input, upper text field is output. Try this: (load "chickenTk.scm") ;; load the Tk extension (start-tk) ;; invoke Tk (tk/console) ;; your command window (event-loop) ;; interaction Scheme <-> Tk (end-tk) ;; kill Tk (exit) ;; you're done. © Author \| Home \| Sitemap