var instance = new Vintasoft.Twain.WebTwainDeviceJS(deviceName, productFamily, manufacturer, driverVersion, twainVersion, deviceManager, is64Bit);

var value; // Type: any

// Parameters
var x; // Type: number
var y; // Type: number
var width; // Type: number
var height; // Type: number
var successFunc; // Type: function
var errorFunc; // Type: function

value = instance.setImageLayoutAsync(x, y, width, height, successFunc, errorFunc);

function setImageLayoutAsync(
   x
X-coordinate of image layout rectangle.
 : number, 
   y
Y-coordinate of image layout rectangle.
 : number, 
   width
Width of image layout rectangle.
 : number, 
   height
Height of image layout rectangle.
 : number, 
   successFunc
A function that will be executed if request is executed successfully. Function prototype: "successFunc(twainDevice)", where 'twainDevice' parameter is an instance of WebTwainDeviceJS class.
 : Function, 
   errorFunc
A function that will be executed if request is failed. Function prototype: "errorFunc(twainDevice, errorMessage)", where 'twainDevice' parameter is an instance of WebTwainDeviceJS class, 'errorMessage' parameter is string that describes error.
 : Function
) : any;

Parameters

x

X-coordinate of image layout rectangle.

y

Y-coordinate of image layout rectangle.

width

Width of image layout rectangle.

height

Height of image layout rectangle.

successFunc

A function that will be executed if request is executed successfully. Function prototype: "successFunc(twainDevice)", where 'twainDevice' parameter is an instance of WebTwainDeviceJS class.

errorFunc

A function that will be executed if request is failed. Function prototype: "errorFunc(twainDevice, errorMessage)", where 'twainDevice' parameter is an instance of WebTwainDeviceJS class, 'errorMessage' parameter is string that describes error.

This function sends an asynchronous request to set the image layout rectangle of TWAIN device. If you want to use synchronous request instead of asynchronous request, please use WebTwainDeviceJS.setImageLayout function.

Reference

WebTwainDeviceJS Class
WebTwainDeviceJS Members