updateImage Method


Update the HTML Image Element of an item.


JavaScript Syntax
ImageViewerItems.prototype.updateImage = function(item, image, resolution) 
TypeScript Syntax
updateImage(item: ImageViewerItem, image: HTMLImageElement, resolution: LeadSizeD): void; 



Item to update


New HTML Image Element. If this is null, then the item will be empty after this method returns.


The resolution to use of the image in dots/inch (or DPI). A value of 0,0 or Empty means use the default image

resolution which is 96 pixels.


This method is a shortcut for updating the Image and Resolution properties. It is equivalent to:

item.image = image; 
item.resolution = resolution; 

UpdateElement is a shortcut for updating not only Image, but also Element and Canvas. Passing a valid HTML Image Element to UpdateElement sets the Image property just as UpdateImage does. Similarly, passing a valid HTML5 Canvas Element to UpdateElement sets the Canvas property just as UpdateCanvas does. The item can have a value in only one of Image, Element or Canvas. Setting one value will automatically delete the values of the others.


JavaScript Example
var img = new Image(200, 200); 
this._imageViewer.items.updateImage(this._imageViewer.activeItem, img, lt.LeadSizeD.create(96, 96)); 


Target Platforms

Help Version 19.0.2017.10.27
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