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

var value; // Type: string
value = instance.get_Halftones();

function get_Halftones() : string;

Return Value

This property sends a synchronous request to get value of WebDeviceCapabilityIdEnumJS.IHalftones capability. If you want to use asynchronous request instead of synchronous request, please get information about WebDeviceCapabilityIdEnumJS.IHalftones capability using WebTwainDeviceJS.getCapabilityAsync or WebTwainDeviceJS.getCapabilitiesAsync function.

Reference

WebTwainDeviceJS Class
WebTwainDeviceJS Members