[Overview][Constants][Types][Classes][Procedures and functions][Variables][Index] Reference for unit 'Classes' (#rtl)

IFPObserved.FPONotifyObservers

Notify all observers

Declaration

Source position: classesh.inc line 172

procedure IFPObserved.FPONotifyObservers(

  ASender: TObject;

  AOperation: TFPObservedOperation;

  Data: Pointer

);

Description

FPONotifyObservers notifies all observers of the object that a change has occurred. It calls FPOObservedChanged on the IFPObserver interface of all attached objects, and passes on ASender (normally this is Self), AOperation and Data. What Data is, depends on the implementor of the interface.

There is no guaranteed order in which the change notifications are delivered to the observers. This is an implementation-specific detail, which should not be relied upon in any way.

See also

IFPObserver

  

Interface for an object to observe other objects.

FPOObservedChanged

  

Entry point for change notifications

FPODetachObserver

FPOAttachObserver


Documentation generated on: Sep 28 2017