API:Data.DB.TIDispatchField
Delphi
TIDispatchField = class(TInterfaceField)
C++
class PASCALIMPLEMENTATION TIDispatchField : public TInterfaceField
Properties
| Type | Visibility | Source | Unit | Parent |
|---|---|---|---|---|
| class | public | Data.DB.pas Data.DB.hpp |
Data.DB | Data.DB |
Description
TInterfaceField represents an interface field in a dataset.
Data.DB.TIDispatchField inherits from Data.DB.TInterfaceField. All content below this line refers to Data.DB.TInterfaceField.
TInterfaceField represents an interface field in a dataset.
TInterfaceField encapsulates the fundamental behavior common to fields that contain pointers to interfaces (IUnknown) as data. TInterfaceField reimplements the Value and AsVariant properties to adapt them to accessing fields containing interfaces.
If you use the Fields editor at design time to create a persistent field component for the interface field, you can access it by name at runtime. When using dynamic field components, you can access the TInterfaceField instance using the dataset's Fields property or FieldByName method.