Data.DB.TBlobField.SetFieldType
Delphi
procedure SetFieldType(Value: TFieldType); override;
C++
virtual void __fastcall SetFieldType(TFieldType Value);
Properties
| Type | Visibility | Source | Unit | Parent |
|---|---|---|---|---|
procedure function |
public | Data.DB.pas Data.DB.hpp |
Data.DB | TBlobField |
Description
Specifies the type of the BLOB field.
Use SetFieldType to change the field type of a BLOB field, overriding the default type.
Normally, the type of the physical database field is checked and a TFieldType is selected that matches most closely. BLOB fields can indicate more explicitly what kind of BLOB is in the database. Specify the BLOB type as the value of the Value parameter.
The following table contains the possible values for BLOB fields. Calling SetFieldType with any other data type does nothing.
| Value | Description |
|---|---|
|
ftBlob |
Binary Large Object field |
|
ftMemo |
Text memo field |
|
ftGraphic |
Bitmap field |
|
ftFmtMemo |
Formatted text memo field |
|
ftParadoxOle |
Paradox OLE field |
|
ftDBaseOle |
dBASE OLE field |
|
ftTypedBinary |
Typed binary field |
|
ftOraBlob |
BLOB fields in Oracle 8 tables |
|
ftOraClob |
CLOB fields in Oracle 8 tables |
Note: Calling SetFieldType does the same thing as setting the BlobType property.