QrCode Decoder

RhoElements 2.x API


The QrCode Decoder is used to enable or disable the Qrcode decoder.


qrCode (Decoder) <META> Syntax

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

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

e.g. scanner.qrCode = Value;


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

NamePossible ValuesDescriptionDefault Value
qrCode:[Value] enabled/DisabledEnables/Disables the Qrcode decoder.Device specific


RhoElements Version1.0.0 or above
Supported DevicesAll supported devices.
Minimum RequirementsScanner or Imager module and device that supports Qrcode.
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 Qrcode labels:

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

Above example can also be written as shown below:

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


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

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

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