var instance = new Vintasoft.Twain.WebTwainDeviceManagerJS(service);

var value; // Type: any

// Parameters
var initSettings; // Type: WebTwainDeviceManagerInitSettingsJS
var successFunc; // Type: function
var errorFunc; // Type: function

value = instance.openAsync(initSettings, successFunc, errorFunc);

function openAsync(
   initSettings
An instance of WebTwainDeviceManagerInitSettingsJS class that defines initialization settings for TWAIN device manager.
 : WebTwainDeviceManagerInitSettingsJS, 
   successFunc
A function that will be executed if request is executed successfully. Function prototype: "successFunc(twainDeviceManager)", where 'twainDeviceManager' parameter is an instance of WebTwainDeviceManagerJS class.
 : Function, 
   errorFunc
A function that will be executed if request is failed. Function prototype: "errorFunc(twainDeviceManager, errorMessage)", where 'twainDeviceManager' parameter is an instance of WebTwainDeviceManagerJS class, 'errorMessage' parameter is string that describes error.
 : Function
) : any;

Parameters

initSettings

An instance of WebTwainDeviceManagerInitSettingsJS class that defines initialization settings for TWAIN device manager.

successFunc

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

errorFunc

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

This function sends an asynchronous request to open TWAIN device manager. If you want to use synchronous request instead of asynchronous request, please use WebTwainDeviceManagerJS.open" function.

Reference

WebTwainDeviceManagerJS Class
WebTwainDeviceManagerJS Members