How this book is organized

This guide consists of:

• an introduction to SCO Visual Tcl, including overviews of:

  • basic components of SCO Visual Tcl,

  • SCO Visual Tcl architecture,

  • widgets and their uses,

  • events and callbacks,

  • command syntax and execution, and

  • useful features.

• a sample SCO Visual Tcl program which presents programming and user interface concepts in a tutorial style

• chapters which describe:

  • creating callbacks and procedures, including a description of the callback structure and keyed lists

  • accessing the help system, both context-sensitive help and short (point) help

• Appendixes which describe:

  • command options, by ``class'' and ``type''

  • error messages

  • creating applications that conform to a consistent style

  • (TCL) commands by type

  • (VTCL) commands by type

• the command reference -- (TCL) and (VTCL) commands in alphabetical order