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

var value; // Type: Vintasoft.Twain.WebTwainDeviceAcquireModalResultJS

// Parameters
var isProgressResponseEnabled; // Type: boolean

value = instance.acquireModalSync(isProgressResponseEnabled);

function acquireModalSync(
   isProgressResponseEnabled
A value indicating whether web server should send response for image acquisition progress. If undefined, false is used.
 : boolean
) : WebTwainDeviceAcquireModalResultJS;

Parameters

isProgressResponseEnabled

A value indicating whether web server should send response for image acquisition progress. If undefined, false is used.

Return Value

This function sends a synchronous request to do one step of synchronous image acquisition from TWAIN device. If you want to use asynchronous request instead of synchronous request, please use WebTwainDeviceJS.acquireModalAsync function.

Reference

WebTwainDeviceJS Class
WebTwainDeviceJS Members