Tcl, Tk and Gn

• Tcl is a generic interpreted command language.
• Tcl can be used to provide a procedural scene description language.
• Tk is a graphical user interface toolkit Tcl extension.

The Tcl/Tk material is, for the most part, a reimplementation of public domain overheads distributed by John K. Ousterhout.

 
• Tcl: A Generic Command Language
  • Syntax Summary
  • Tcl Example
  • Tcl Parsing and Interpretation
  • Scripts
  • Variable Substitution
  • Expressions
  • Command Substitution
  • Quoting
  • Control Structures
  • Procedures
  • Lists
  • Additional Tcl Details
  • Creating Tcl Extensions in C
• Tk: A User Interface Tcl Extension
  • Widgets and User Interaction
  • Hello World in Tk
  • An Extended Tk Example