RAD Studio VCL Reference
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TInterfaceField Class
TInterfaceField Methods | TInterfaceField Properties | TInterfaceField Members | Description | See Also
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TInterfaceField represents an interface field in a dataset.

Class Hierarchy
Pascal
TInterfaceField = class(TField);
C++
class TInterfaceField : public TField;
File

DB

Description

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. 

 

See Also
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