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

var value; // Type: any

// Parameters
var showUI; // Type: boolean
var showIndicators; // Type: boolean

value = instance.open(showUI, showIndicators);

function open(
   showUI
True - device UI must be shown; false - device UI must NOT be shown.
 : boolean, 
   showIndicators
True - device should show progress indicator during image scan process; false - device should not show progress indicator during image scan process. Default value is true.
 : boolean
) : any;

Parameters

showUI

True - device UI must be shown; false - device UI must NOT be shown.

showIndicators

True - device should show progress indicator during image scan process; false - device should not show progress indicator during image scan process. Default value is true.

This function sends a synchronous request to open TWAIN device. If you want to use asynchronous request instead of synchronous request, please use WebTwainDeviceJS.openAsync function.

Reference

WebTwainDeviceJS Class
WebTwainDeviceJS Members