c-treeDB API API for C

Writing UTF-16 Field Data

A new function ctdbSetFieldAsUTF16() has been added to c-treeDB API C API to enable applications to write data to Unicode field types.

CTDBRET ctdbSetFieldAsUTF16(CTHANDLE Handle, NINT FieldNbr, pWCHAR pValue);

ctdbSetFieldAsUTF16() puts a Unicode UTF-16 string in a Unicode field. If the underlying field type is not one of the Unicode field types, the UTF-16 string is converted to the appropriate type before the data is stored in the field. Handle is a record handle, FieldNbr is the field number and pValue is a pointer to a wide (UTF-16) string buffer. ctdbSetFieldAsUTF16() returns CTDBRET_OK on success.

Two new methods, SetFieldAsUTF16(), have been added to the CTRecord class to enable applications to write data to Unicode field types.

void CTRecord::SetFieldAsUTF16(NINT FieldNumber, pWCHAR value);

SetFieldAsUTF16() puts a Unicode UTF-16 string in a Unicode field. If the underlying field type is not one of the Unicode field types, the UTF-16 string is converted to the appropriate type before the data is stored in the field. FieldNbr is a number representing the field number and value is the wide (UTF-16) string buffer.

void CTRecord::SetFieldAsUTF16(const CTString& FieldName, pWCHAR value);

SetFieldAsUTF16() puts a Unicode UTF-16 string in a Unicode field. If the underlying field type is not one of the Unicode field types, the UTF-16 string is converted to the appropriate type before the data is stores in the field. FieldName is the field name and value is the wide (UTF-16) string buffer.

Writing UTF-16 Data C Example

CTDBRET AddData(CTHANDLE hRecord, pTEXT str, NINT val)

{

CTDBRET eRet;

WCHAR WStr[32];

if ((eRet = ctdbClearRecord(hRecord)) != CTDBRET_OK)

{

printf("ctdbClearRecord failed with error %d", eRet);

goto Exit;

}

if ((eRet = (CTDBRET)ctdb_u8TOu16(str, WStr, sizeof(WStr))) != CTDBRET_OK)

{

printf("ctdb_u8TOu16 failed with error %d", eRet);

goto Exit;

}

if ((eRet = ctdbSetFieldAsUTF16(hRecord, 0, WStr)) != CTDBRET_OK)

{

printf("ctdbSetFieldAsUTF16 failed with error %d", eRet);

goto Exit;

}

if ((eRet = ctdbSetFieldAsSigned(hRecord, 1, (CTSIGNED)val)) != CTDBRET_OK)

{

printf("ctdbSetFieldAsSigned failed with error %d", eRet);

goto Exit;

}

if ((eRet = ctdbWriteRecord(hRecord)) != CTDBRET_OK)

{

printf("ctdbWriteRecord failed with error %d", eRet);

goto Exit;

}

Exit:

return eRet;

}