Specifies whether the data value is present in the document. The setting 1 specifies that the value is valid and exists.
type
The data type of the metadata element. The types are defined in KVSumInfoType in kvtypes.h.
data
The content of the metadata field.
If the type member is KV_Int4, or KV_Bool, this member contains the actual value. Otherwise, this member is a pointer to the actual value.
KV_DateTime and KV_IEEE8 point to an 8-byte value.
KV_String and KV_Unicode point to the beginning of the string containing the text. KV_Unicode is replaced with KV_String when the UNICODE value has been character mapped to the desired output character set.
pcType
A pointer to the name (text description) of the metadata field.