Raises the PreRender event.
ImageViewer.prototype.onPreRender = function(e)
onPreRender(e: ImageViewerRenderEventArgs): void; // protected
e
The event data.
Raising an event invokes the event handler through a delegate. The OnPreRender 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 OnPreRender in a derived class, be sure to call the base class's OnPreRender method so that registered delegates receive the event.
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