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typedef void __fastcall (__closure *TDataChangeEvent)(System::TObject* Sender, TField* Field);


Type Visibility Source Unit Parent
typedef public Data.DB.hpp Data.DB Data.DB


OnDataChange event handler type.

TDataChangeEvent is a type used by the OnDataChange event handler. The Sender parameter specifies the sender object. The Field parameter specifies the field that was affected, if only one field was targeted. Field is set to null if the change can affect more than one field value (for instance, when moving to a new record or refreshing a record buffer).

See Also