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Reference for unit 'Classes' (#rtl)

TList.FPONotifyObservers

Notify observers of changes in the list

Declaration

Source position: classesh.inc line 325

public procedure TList.FPONotifyObservers(

ASender: TObject;

Data: Pointer

);

FPONotifyObservers is called to notify observers of changes in the list. The following notifications are sent:

ooAddItem: when a pointer is added. Data is the pointer that is added.
ooDeleteItem: when a pointer is deleted or extracted. Data is the pointer that is deleted or extracted.
ooChange: called when 2 pointers are exchanged.
ooFree: Called when the list is freed.