[Shapelib] What format to return null values from character fields

[Frank Warmerdam]

Rob Cairns wrote:
> Hi Frank. When returning null values from character fields in a dbf file to 
> e.g. a datagrid object, should these be returned as VT_NULL, VT_EMPTY or 
> empty string ("")? Many Thanks - Rob

Rob,

The value is notionally NULL so I think returning VT_NULL would be
appropriate.  But then I'm not especially savvy on VB types and semantics.

Best regards,
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