onEraseBackground Method

Summary

Raises the EraseBackground event.

Syntax

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

Parameters

e

Event data.

Remarks

Raising an event invokes the event handler through a delegate. The OnEraseBackground 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 OnEraseBackground in a derived class, be sure to call the base class's OnEraseBackground method so that registered delegates receive the event.

Requirements

Target Platforms

Help Version 19.0.2017.10.27
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