Tcl/Tk Cookbook - Using Extensions

Purpose

This is a brief description of using the BLT graph widget with some contributed software associated with it. The contributed modules are not described as that is beyond the scope of this cookbook.

You will need

It is assumed that you have built a Tcl interpreter that includes the Tcl/Tk extensions BLT and Expect. You can of course try the example using blt_wish on its own.

Dish to Serve Up

Display two curves in a BLT graph widget and set zoom.

Recipe

This example can be found in ~cookbook/code/ch10

• write the script for creating the blt-graph widget and two simple curves to display within.
• set zooming

Acknowledgement

This example is based on the contributed Tcl/Tk extension BLT.