UsbPrinter

Description

The UsbPrinter object allows controlling a printer connected to a local USB port. When opened, data such as PostScript or ZPL can be sent to the printer using the IoDevice.write() method.

This object was introduced in InCore 2.3.

› Inherits:File

Overview

Properties

index File.error File.errorString File.fileName File.storage IoDevice.append IoDevice.atEnd

IoDevice.autoOpen IoDevice.bytesAvailable IoDevice.canReadLine IoDevice.deviceErrorString IoDevice.isOpen IoDevice.isWritable IoDevice.nameArgument

IoDevice.pos IoDevice.readOnly IoDevice.size IoDevice.truncate IoDevice.unbuffered Object.objectId Object.parent

Methods

File.remove() File.sync() IoDevice.close() IoDevice.flush() IoDevice.open()

IoDevice.peekAll() IoDevice.read() IoDevice.readAll() IoDevice.readLine() IoDevice.sync()

IoDevice.write() Object.deserializeProperties() Object.fromJson() Object.serializeProperties() Object.toJson()

Signals

File.errorOccurred() IoDevice.lineAvailableForRead() IoDevice.readyRead() Object.completed()

Enumerations

File.Error

Properties

index

This property holds the index of the printer which to communicate with.

› Type:SignedInteger › Default:0 › Signal:indexChanged() › Attributes:Writable

Example

import InCore.IO 2.5

UsbPrinter {
    index: 0
    autoOpen: true

    onIsOpenChanged: {
        console.log("printing")
        // print QR code on ZPL-based label printer
        write("^XA
^FO20,20^BQ,2,10^FDQA,0123456789ABCD 2D code^FS
^XZ")
        flush();
    }
}