onActiveItemChanged Method

Summary

Raises the ActiveItemChanged event.

Syntax

JavaScript Syntax
ImageViewer.prototype.onActiveItemChanged = function(e)
TypeScript Syntax
onActiveItemChanged(e: LeadEventArgs): void; // protected

Parameters

e

Event data

Remarks

Raising an event invokes the event handler through a delegate. The OnActiveItemChanged method also allows derived classes to handle the event without attaching a delegate. This is the preferred technique for handling the event in a derived class.

Note to Inheritors: When overriding OnActiveItemChanged in a derived class, be sure to call the base class's OnActiveItemChanged method so that registered delegates receive the event.

For more information, refer to Image Viewer Items.

Requirements

Target Platforms

Help Version 19.0.2017.10.27
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