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, in units of measure specified by get_UnitOfMeasure() function, of image layout rectangle.
 : number, 
   y
Y-coordinate, in units of measure specified by get_UnitOfMeasure() function, of image layout rectangle.
 : number, 
   width
Width, in units of measure specified by get_UnitOfMeasure() function, of image layout rectangle.
 : number, 
   height
Height, in units of measure specified by get_UnitOfMeasure() function, 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, in units of measure specified by get_UnitOfMeasure() function, of image layout rectangle.

y

Y-coordinate, in units of measure specified by get_UnitOfMeasure() function, of image layout rectangle.

width

Width, in units of measure specified by get_UnitOfMeasure() function, of image layout rectangle.

height

Height, in units of measure specified by get_UnitOfMeasure() function, 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