result

        This method handles the option '-result'. It returns the current value
        of the variable specified by -textvariable.

NAME

    NumEntry

SYNOPSIS

    use NumEntry;
    $widget = $parent->NumEntry(-textvariable => <ref to scalar>);
        $result = $widget->cget(-result); ## when result variable is aout of scope

DESCRIPTION

        NumEntry provides a composite widget which allows the user to enter
        integer value by

                - typing a value on the keyboard
                - pressing the increase or decrease buttons
                - pressing the <up> or <down> keys

        The programmer supplies the options

                -textvariable   ref to scalar (mandatory)
                -minvalue       minimum value, optional, default 0, scalar containing decimal value
                -maxvalue       maximum value, optional, default 1, scalar containing decimal value
                -incvalue       increment, optional default 1, scalar containing the decimal value

                all widget options which are applicable to the Entry widget.

        The referenced value should contain the initial value.

        Options may be changed and/or inspected the usual way using configure and/or cget .
        The resulting value may be got by means of

                $widget->Subwidget('NumEntry')->get();

                or

                $widget->cget(-result);         ## i.e. when variable is out of current scope!

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