Code39 Decoder

RhoElements 2.x API

Overview

The Code39 Decoder is used to enable or disable the Code39 decoder.

Syntax

code39 (Decoder) <META> Syntax

<META HTTP-Equiv="scanner" content="Code39:[parameter]">

code39 JavaScript Object Syntax:
By default the JavaScript Object 'scanner' will exist on the current page and can be used to interact directly with the code39.
To Set code39 parameters via JavaScript use the following syntax: scanner.Parameter = Value;

e.g. scanner.code39 = Value;

Parameters

Items listed in this section indicate parameters, or attributes which can be set.

NamePossible ValuesDescriptionDefault Value
code39:[Value] enabled/disabledEnables/disables the Code39 decoder.Device specific

Requirements

RhoElements Version1.0.0 or above
Supported DevicesRhoElements
Minimum RequirementsScanner or Imager module and device supports Code39.
PersistenceTransient - Decoder settings are only guaranteed to persist until the Scanner is disabled

HTML/JavaScript Examples

The following example enables the scanner to read only Code39 labels:

<META HTTP-Equiv="scanner" Content="allDecoders:disabled">
<META HTTP-Equiv="scanner" Content="Code39:enabled">
<META HTTP-Equiv="scanner" Content="enabled">

Above example can also be written as shown below:

<META HTTP-Equiv="scanner" Content="allDecoders:disabled;Code39:enabled;enabled">

or

<META HTTP-Equiv="scanner-all_decoders" Content="disabled">
<META HTTP-Equiv="scanner-Code39" Content="enabled">
<META HTTP-Equiv="scanner-enabled" Content="SCN1">

The following example enables the scanner to read all labels except Code39:

<META HTTP-Equiv="scanner" Content="allDecoders:enabled">
<META HTTP-Equiv="scanner" Content="Code39:disabled">
<META HTTP-Equiv="scanner" Content="enabled">