Practical Programming in Tcl and Tk (4th Edition)

2017-07-07 02:10:07

	Practical Programming in Tcl & Tk, Third Edition By Brent B. Welch
	Table of Contents

	Chapter 48. Tcl 7.4/Tk 4.0

The default value for a radiobutton is no longer the name of the widget. Instead, it is an empty string. Make sure you specify a -value option when setting up your radiobuttons.

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