Returns the size, as stored in memory, of a vdata field.
Return value
Returns the vdata field size if successful and FAIL (or -1) otherwise.
Description
VFfieldisize returns the size, as stored in memory, of a vdata field identified by the parameter field_index in the vdata identified by the parameter vdata_id.
The value of the parameter field_index ranges from 0 to the total number of fields in the vdata - 1. The number of vdata fields is returned by VFnfields function.