tixGetBoolean - Get the boolean value of a string.

       The command tixGetBoolean returns "0" if the string is a valid TCL string for the boolean value FALSE. It
       returns "1" if the string is a valid TCL string for the boolean value TRUE.

       When  the  string is not a valid TCL boolean value and the -nocomplain option is specified, tixGetBoolean
       will return "0". Otherwise it will generate an error.

       Tix(n)

Tix                                                    4.0                                                TIX(3)

       tixGetBoolean - Get the boolean value of a string.

tixGetBoolean?-nocomplain?string