hotBox                                       (Assignable)

        Contains an optional string that specifies the characters to use when
        drawing a box around the list box when it has input focus.  Its
        default value is a double-line box.

        Standard Box Types
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        Constant            Description
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        B_SINGLE            Single line box
        B_DOUBLE            Double line box
        B_SINGLE_DOUBLE     Single line top/bottom, double line sides
        B_DOUBLE_SINGLE     Double line top/bottom, single line sides
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        Box.ch contains manifest constants for the ListBox:hotBox value.