Data.Bind.ObjectScope.TCreateItemInstanceEvent
Delphi
TCreateItemInstanceEvent = procedure(Sender: TBindSourceAdapter; var AHandled: Boolean; var AInstance: TObject) of object;
C++
typedef void __fastcall (__closure *TCreateItemInstanceEvent)(TBindSourceAdapter* Sender, bool &AHandled, System::TObject* &AInstance);
Properties
| Type | Visibility | Source | Unit | Parent |
|---|---|---|---|---|
type typedef |
public | Data.Bind.ObjectScope.pas Data.Bind.ObjectScope.hpp |
Data.Bind.ObjectScope | Data.Bind.ObjectScope |
Description
TCreateItemInstanceEvent is an event handler that takes place when an adapter is requested to create a new data source item.
TCreateItemInstanceEvent has the following parameters:
- Sender specifies the adapter.
- AHandled set by the developer to True when the adapter does not use the default items factory to create the item instance. See TBindSourceAdapterInstanceFactory.
- AInstance should be set to an item instance of a class type which is a subclass of the T class type of TListBindSourceAdapter<T>. When AInstance is set to nil, then no new item is inserted into the data source.