QRBarcodeReadOptions Class

Visual Basic
C#
WinRT C#
Objective-C
Java
WinRT JavaScript
C++

[TypeConverterAttribute()]
[SerializableAttribute()]
public class QRBarcodeReadOptions : BarcodeReadOptions, System.ICloneable

'Declaration
 
<TypeConverterAttribute()>
<SerializableAttribute()>
Public Class QRBarcodeReadOptions 
   Inherits BarcodeReadOptions
   Implements System.ICloneable

'Usage
 
Dim instance As QRBarcodeReadOptions

public sealed class QRBarcodeReadOptions : System.ICloneable

ObjectiveC Syntax

Java Syntax

function Leadtools.Barcode.QRBarcodeReadOptions()

[TypeConverterAttribute()]
[SerializableAttribute()]
public ref class QRBarcodeReadOptions : public BarcodeReadOptions, System.ICloneable

The QRBarcodeReadOptions class is used to control the options when reading QR barcodes using LEADTOOLS. Set the options in two ways:

The BarcodeReader class contains default options for each barcode symbology (or group of common symbologies). These options can be retrieved using the BarcodeReader.GetDefaultOptions method, passing BarcodeSymbology.QR. Change the members of the returned QRBarcodeReadOptions by casting it from BarcodeReadOptions to QRBarcodeReadOptions.

You can also create an instance of the QRBarcodeReadOptions class and use it directly in the BarcodeReader.ReadBarcode and BarcodeReader.ReadBarcodes methods that accept a single or array of options as an input parameter.

The base BarcodeReadOptions contains the following members and features:

Member	Description
BarcodeReadOptions.ForeColor	Controls the barcode foreground color (color of the bars or symbols) to use when reading a barcode from a colored image.
BarcodeReadOptions.BackColor	Controls the barcode background color (color of the spaces) to use when reading a barcode from a colored image.
BarcodeReadOptions.Load and BarcodeReadOptions.Save	Can be used to save or load the options to/from an XML file or stream.
BarcodeReadOptions.GetSupportedSymbologies	This class overrides the base class method to return an array containing the following symbologies: BarcodeSymbology.QR

In addition to the features features and members, the QRBarcodeReadOptions contains these QR barcodes specific features:

Member	Description
EnableDoublePass	Enable internal auto pre-processing of the image data if no QR barcode was found

For an example, refer to QRBarcodeData.

Target Platforms: Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

Reference

QRBarcodeReadOptions Members
Leadtools.Barcode Namespace
QRBarcodeData Class
BarcodeReader Class
BarcodeSymbology Enumeration
BarcodeEngine Class
BarcodeReader.ReadBarcode
BarcodeReader.ReadBarcodes
Programming with LEADTOOLS Barcode
Supported Barcode Symbologies
Unlocking Barcode Support
Reading Barcodes Tutorial
QR Barcodes in LEADTOOLS