LEADTOOLSバーコード(Leadtools.Barcodeアセンブリ)

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FourStateBarcodeReadOptionsクラス








メンバ 
USPS、英国郵政省とAustralian Postなどの4ステート郵便バーコードを読むとき、使う追加のオプションを格納します。
オブジェクトモデル
構文
[TypeConverterAttribute()]
[SerializableAttribute()]
public class FourStateBarcodeReadOptions : BarcodeReadOptions, System.ICloneable  
'Declaration
 
<TypeConverterAttribute()>
<SerializableAttribute()>
Public Class FourStateBarcodeReadOptions 
   Inherits BarcodeReadOptions
   Implements System.ICloneable 
'Usage
 
Dim instance As FourStateBarcodeReadOptions
public sealed class FourStateBarcodeReadOptions : System.ICloneable  
@interface LTFourStateBarcodeReadOptions : LTBarcodeReadOptions
public class FourStateBarcodeReadOptions extends BarcodeReadOptions
function Leadtools.Barcode.FourStateBarcodeReadOptions()
[TypeConverterAttribute()]
[SerializableAttribute()]
public ref class FourStateBarcodeReadOptions : public BarcodeReadOptions, System.ICloneable  
解説

FourStateBarcodeReadOptionsクラスは、LEADTOOLSを用いて4ステート郵便バーコードを読むとき、オプションを制御するのに用いられます。オプションの設定方法は2通りあります。

BarcodeReaderクラスには、各バーコード体系(または共通バーコード体系のグループ)のデフォルトオプションが含まれます。これらのオプションを取得するには、以下のいずれかを渡してBarcodeReader.GetDefaultOptionsメソッドを呼び出します。

BarcodeReadOptionsからFourStateBarcodeReadOptionsまでそれをキャストすることによって、返されたFourStateBarcodeReadOptionsクラスのメンバを変更します。

FourStateBarcodeReadOptionsクラスのインスタンスを作成して、BarcodeReader.ReadBarcodeと入力パラメータとしてシングルまたはオプションの配列を受け取るBarcodeReader.ReadBarcodesメソッドで直接それを使います。

ベースBarcodeReadOptionsのメンバとその機能を以下に示します。

メンバ 説明
BarcodeReadOptions.ForeColor

カラー画像からバーコードを読むとき、使うバーコード前景色(バーまたはシンボルのカラー)を制御します。

BarcodeReadOptions.BackColor

カラー画像からバーコードを読むとき、使うバーコード背景色(スペースのカラー)を制御します。

BarcodeReadOptions.LoadBarcodeReadOptions.Save

保存するか、XMLファイルまたはストリームへ/からオプションをロードするのに用いられることができます。

BarcodeReadOptions.GetSupportedSymbologies

このクラスは、以下のバーコード体系を格納している配列を返すために、ベースクラスメソッドをオーバーライドします:BarcodeSymbology.USPS4StateBarcodeSymbology.AustralianPost4StateBarcodeSymbology.RoyalMail4State

これらの機能とメンバに加えて、FourStateBarcodeReadOptionsはこれらの4ステート郵便バーコードに特有の機能を格納します:

メンバ 説明
SearchDirection

バーコードの検索時に使用する方向(水平、垂直、またはその両方)。

データの塊

バーコードの読み取り時にスキップする列あたりのスキャンライン数

ReturnCheckDigit

エラー検査桁は、バーコードデータの一部として返されます

AustralianPostCIFEncoding

テーブルをデコードしているAustralian Post顧客情報フィールド(CIF)

サンプル

このサンプルでは、さまざまなオプションを指定したいくつかの4-状態バーコードをimageに書き込んだ後、再び読み取ります。

Copy Code  
Imports Leadtools
Imports Leadtools.Codecs
Imports Leadtools.Forms
Imports Leadtools.Barcode
Imports Leadtools.ImageProcessing

      
Public Sub FourStateBarcode_Example()
   Dim imageFileName As String = Path.Combine(LEAD_VARS.ImagesDir, "MyFourStateBarcodes.tif")
   Dim engine As New BarcodeEngine()

   ' Create the image to write the barcodes to
   Dim resolution As Integer = 300
   Using image As RasterImage = RasterImage.Create(CType(8.5 * resolution, Integer), CType(11.0 * resolution, Integer), 1, resolution, RasterColor.FromKnownColor(RasterKnownColor.White))
      ' Write a few Four-State barcodes, a USPS, Royal Mail and Australian Post
      WriteBarcode(engine.Writer, image, BarcodeSymbology.USPS4State, "0123456709498765432101234567891", New LogicalRectangle(10, 100, 400, 200, LogicalUnit.Pixel))
      WriteBarcode(engine.Writer, image, BarcodeSymbology.RoyalMail4State, "123456789", New LogicalRectangle(10, 500, 400, 200, LogicalUnit.Pixel))
      WriteBarcode(engine.Writer, image, BarcodeSymbology.AustralianPost4State, "11-12345678", New LogicalRectangle(10, 900, 400, 200, LogicalUnit.Pixel))

      ' Save the image
      Using codecs As New RasterCodecs()
         codecs.Save(image, imageFileName, RasterImageFormat.CcittGroup4, 1)
      End Using
   End Using

   ' Now read the barcodes again
   Using codecs As New RasterCodecs()
      Using image As RasterImage = codecs.Load(imageFileName)
         ' Read the USPS barcode
         ReadBarcodes(engine.Reader, image, BarcodeSymbology.USPS4State)

         ' Read the Royal Mail barcode
         ReadBarcodes(engine.Reader, image, BarcodeSymbology.RoyalMail4State) '

         ' Read the Australian Post barcode
         ReadBarcodes(engine.Reader, image, BarcodeSymbology.AustralianPost4State)
      End Using
   End Using
End Sub

Private Sub WriteBarcode(ByVal writer As BarcodeWriter, ByVal image As RasterImage, ByVal symbology As BarcodeSymbology, ByVal value As String, ByVal bounds As LogicalRectangle)
   ' Create the barcode data
   Dim barcode As New BarcodeData(symbology, value)
   barcode.Bounds = bounds

   ' Set the write options
   Dim options As New FourStateBarcodeWriteOptions()
   options.TextPosition = BarcodeOutputTextPosition.Default
   options.XModule = 30
   options.AustralianPostCIFEncoding = AustralianPost4StateBarcodeCIFEncoding.CTable

   ' Write it
   Console.WriteLine("Writing {0} barcode with data: {1}", symbology, value)
   writer.WriteBarcode(image, barcode, options)
End Sub

Private Sub ReadBarcodes(ByVal reader As BarcodeReader, ByVal image As RasterImage, ByVal symbology As BarcodeSymbology)
   ' Setup read options
   Dim options As New FourStateBarcodeReadOptions()
   options.SearchDirection = BarcodeSearchDirection.Horizontal
   options.Granularity = 9
   options.ReturnCheckDigit = BarcodeReturnCheckDigit.Default
   options.AustralianPostCIFEncoding = AustralianPost4StateBarcodeCIFEncoding.CTable

   Console.WriteLine("Reading {0} barcodes", symbology)
   Dim barcode As BarcodeData = reader.ReadBarcode(image, LogicalRectangle.Empty, symbology, options)
   If Not IsNothing(barcode) Then
      Console.WriteLine(" At {0}, data: {1}", barcode.Bounds, barcode.Value)
   Else
      Console.WriteLine(" Not found")
   End If
End Sub

Public NotInheritable Class LEAD_VARS
Public Const ImagesDir As String = "C:\Users\Public\Documents\LEADTOOLS Images"
End Class
using Leadtools;
using Leadtools.Codecs;
using Leadtools.Forms;
using Leadtools.Barcode;
using Leadtools.ImageProcessing;

      
public void FourStateBarcode_Example()
{
   string imageFileName = Path.Combine(LEAD_VARS.ImagesDir, "MyFourStateBarcodes.tif");
   BarcodeEngine engine = new BarcodeEngine();

   // Create the image to write the barcodes to
   int resolution = 300;
   using(RasterImage image = RasterImage.Create((int)(8.5 * resolution), (int)(11.0 * resolution), 1, resolution, RasterColor.FromKnownColor(RasterKnownColor.White)))
   {
      // Write a few Four-State barcodes, a USPS, Royal Mail and Australian Post
      WriteBarcode(engine.Writer, image, BarcodeSymbology.USPS4State, "0123456709498765432101234567891", new LogicalRectangle(10, 100, 400, 200, LogicalUnit.Pixel));
      WriteBarcode(engine.Writer, image, BarcodeSymbology.RoyalMail4State, "123456789", new LogicalRectangle(10, 500, 400, 200, LogicalUnit.Pixel));
      WriteBarcode(engine.Writer, image, BarcodeSymbology.AustralianPost4State, "11-12345678", new LogicalRectangle(10, 900, 400, 200, LogicalUnit.Pixel));

      // Save the image
      using(RasterCodecs codecs = new RasterCodecs())
      {
         codecs.Save(image, imageFileName, RasterImageFormat.CcittGroup4, 1);
      }
   }

   // Now read the barcodes again
   using(RasterCodecs codecs = new RasterCodecs())
   {
      using(RasterImage image = codecs.Load(imageFileName))
      {
         // Read the USPS barcode
         ReadBarcodes(engine.Reader, image, BarcodeSymbology.USPS4State);

         // Read the Royal Mail barcode
         ReadBarcodes(engine.Reader, image, BarcodeSymbology.RoyalMail4State);

         // Read the Australian Post barcode
         ReadBarcodes(engine.Reader, image, BarcodeSymbology.AustralianPost4State);
      }
   }
}

private void WriteBarcode(BarcodeWriter writer, RasterImage image, BarcodeSymbology symbology, string value, LogicalRectangle bounds)
{
   // Create the barcode data
   BarcodeData barcode = new BarcodeData(symbology, value);
   barcode.Bounds = bounds;

   // Set the write options
   FourStateBarcodeWriteOptions options = new FourStateBarcodeWriteOptions();
   options.TextPosition = BarcodeOutputTextPosition.Default;
   options.XModule = 30;
   options.AustralianPostCIFEncoding = AustralianPost4StateBarcodeCIFEncoding.CTable;

   // Write it
   Console.WriteLine("Writing {0} barcode with data: {1}", symbology, value);
   writer.WriteBarcode(image, barcode, options);
}

private void ReadBarcodes(BarcodeReader reader, RasterImage image, BarcodeSymbology symbology)
{
   // Setup read options
   FourStateBarcodeReadOptions options = new FourStateBarcodeReadOptions();
   options.SearchDirection = BarcodeSearchDirection.Horizontal;
   options.Granularity = 9;
   options.ReturnCheckDigit = BarcodeReturnCheckDigit.Default;
   options.AustralianPostCIFEncoding = AustralianPost4StateBarcodeCIFEncoding.CTable;

   Console.WriteLine("Reading {0} barcodes", symbology);
   BarcodeData barcode = reader.ReadBarcode(image, LogicalRectangle.Empty, symbology, options);
   if(barcode != null)
   {
      Console.WriteLine(" At {0}, data: {1}", barcode.Bounds, barcode.Value);
   }
   else
   {
      Console.WriteLine(" Not found");
   }
}

static class LEAD_VARS
{
public const string ImagesDir = @"C:\Users\Public\Documents\LEADTOOLS Images";
}
using Leadtools;
using Leadtools.Codecs;
using Leadtools.Barcode;
using Leadtools.ImageProcessing;

      
public async Task FourStateBarcode_Example()
{
   string imageFileName = @"MyFourStateBarcodes.tif";
   BarcodeEngine engine = new BarcodeEngine();

   // Create the image to write the barcodes to
   int resolution = 300;
   using(RasterImage image = RasterImage.Create((int)(8.5 * resolution), (int)(11.0 * resolution), 1, resolution, RasterColorHelper.FromKnownColor(RasterKnownColor.White)))
   {
      // Write a few Four-State barcodes, a USPS, Royal Mail and Australian Post
      WriteBarcode(engine.Writer, image, BarcodeSymbology.USPS4State, "0123456709498765432101234567891", LeadRectHelper.Create(10, 100, 400, 200));
      WriteBarcode(engine.Writer, image, BarcodeSymbology.RoyalMail4State, "123456789", LeadRectHelper.Create(10, 500, 400, 200));
      WriteBarcode(engine.Writer, image, BarcodeSymbology.AustralianPost4State, "11-12345678", LeadRectHelper.Create(10, 900, 400, 200));

      // Save the image
      using(RasterCodecs codecs = new RasterCodecs())
      {
         StorageFile saveFile = await Tools.AppLocalFolder.CreateFileAsync(imageFileName);
         await codecs.SaveAsync(image, LeadStreamFactory.Create(saveFile), RasterImageFormat.CcittGroup4, 1);
      }
   }

   // Now read the barcodes again
   using(RasterCodecs codecs = new RasterCodecs())
   {
      StorageFile loadFile = await Tools.AppInstallFolder.GetFileAsync(imageFileName);
      using(RasterImage image = await codecs.LoadAsync(LeadStreamFactory.Create(loadFile)))
      {
         // Read the USPS barcode
         ReadBarcodes(engine.Reader, image, BarcodeSymbology.USPS4State);

         // Read the Royal Mail barcode
         ReadBarcodes(engine.Reader, image, BarcodeSymbology.RoyalMail4State);

         // Read the Australian Post barcode
         ReadBarcodes(engine.Reader, image, BarcodeSymbology.AustralianPost4State);
      }
   }
}

private void WriteBarcode(BarcodeWriter writer, RasterImage image, BarcodeSymbology symbology, string value, LeadRect bounds)
{
   // Create the barcode data
   BarcodeData barcode = new BarcodeData(symbology, value);
   barcode.Bounds = bounds;

   // Set the write options
   FourStateBarcodeWriteOptions options = new FourStateBarcodeWriteOptions();
   options.TextPosition = BarcodeOutputTextPosition.Default;
   options.XModule = 30;
   options.AustralianPostCIFEncoding = AustralianPost4StateBarcodeCIFEncoding.CTable;

   // Write it
   Debug.WriteLine("Writing {0} barcode with data: {1}", symbology, value);
   writer.WriteBarcode(image, barcode, options);
}

private void ReadBarcodes(BarcodeReader reader, RasterImage image, BarcodeSymbology symbology)
{
   // Setup read options
   FourStateBarcodeReadOptions options = new FourStateBarcodeReadOptions();
   options.SearchDirection = BarcodeSearchDirection.Horizontal;
   options.Granularity = 9;
   options.ReturnCheckDigit = BarcodeReturnCheckDigit.Default;
   options.AustralianPostCIFEncoding = AustralianPost4StateBarcodeCIFEncoding.CTable;

   Debug.WriteLine("Reading {0} barcodes", symbology);
   BarcodeData barcode = reader.ReadBarcode(image, LeadRectHelper.Empty, symbology, options);
   if(barcode != null)
   {
      Debug.WriteLine(" At {0}, data: {1}", barcode.Bounds, barcode.Value);
   }
   else
   {
      Debug.WriteLine(" Not found");
   }
}
using Leadtools;
using Leadtools.Codecs;
using Leadtools.Forms;
using Leadtools.Barcode;
using Leadtools.ImageProcessing;
using Leadtools.Examples;

public void FourStateBarcode_Example(RasterImage image, Stream outStream)
{
   BarcodeEngine engine = new BarcodeEngine();
   // Create the image to write the barcodes to
   RasterCodecs codecs = new RasterCodecs();

   // Write a few Four-State barcodes, a USPS, Royal Mail and Australian Post
   WriteBarcode(engine.Writer, image, BarcodeSymbology.USPS4State, "0123456709498765432101234567891", new LogicalRectangle(10, 100, 400, 200, LogicalUnit.Pixel));
   WriteBarcode(engine.Writer, image, BarcodeSymbology.RoyalMail4State, "123456789", new LogicalRectangle(10, 500, 400, 200, LogicalUnit.Pixel));
   WriteBarcode(engine.Writer, image, BarcodeSymbology.AustralianPost4State, "11-12345678", new LogicalRectangle(10, 900, 400, 200, LogicalUnit.Pixel));

   // Save the image
   codecs.Save(image, outStream, RasterImageFormat.CcittGroup4, 1);

   // Now read the barcodes again
   // Read the USPS barcode
   ReadBarcodes(engine.Reader, image, BarcodeSymbology.USPS4State);

   // Read the Royal Mail barcode
   ReadBarcodes(engine.Reader, image, BarcodeSymbology.RoyalMail4State);

   // Read the Australian Post barcode
   ReadBarcodes(engine.Reader, image, BarcodeSymbology.AustralianPost4State);
}

private void WriteBarcode(BarcodeWriter writer, RasterImage image, BarcodeSymbology symbology, string value, LogicalRectangle bounds)
{
   // Create the barcode data
   BarcodeData barcode = new BarcodeData(symbology, value);
   barcode.Bounds = bounds;

   // Set the write options
   FourStateBarcodeWriteOptions options = new FourStateBarcodeWriteOptions();
   options.TextPosition = BarcodeOutputTextPosition.Default;
   options.XModule = 30;
   options.AustralianPostCIFEncoding = AustralianPost4StateBarcodeCIFEncoding.CTable;

   // Write it
   Console.WriteLine("Writing {0} barcode with data: {1}", symbology, value);
   writer.WriteBarcode(image, barcode, options);
}

private void ReadBarcodes(BarcodeReader reader, RasterImage image, BarcodeSymbology symbology)
{
   // Setup read options
   FourStateBarcodeReadOptions options = new FourStateBarcodeReadOptions();
   options.SearchDirection = BarcodeSearchDirection.Horizontal;
   options.Granularity = 9;
   options.ReturnCheckDigit = BarcodeReturnCheckDigit.Default;
   options.AustralianPostCIFEncoding = AustralianPost4StateBarcodeCIFEncoding.CTable;

   Console.WriteLine("Reading {0} barcodes", symbology);
   BarcodeData barcode = reader.ReadBarcode(image, LogicalRectangle.Empty, symbology, options);
   if(barcode != null)
   {
      Console.WriteLine(" At {0}, data: {1}", barcode.Bounds, barcode.Value);
   }
   else
   {
      Console.WriteLine(" Not found");
   }
}
Imports Leadtools
Imports Leadtools.Codecs
Imports Leadtools.Forms
Imports Leadtools.Barcode
Imports Leadtools.ImageProcessing

Public Sub FourStateBarcode_Example(ByVal image As RasterImage, ByVal outStream As Stream)
  Dim engine As BarcodeEngine = New BarcodeEngine()
  ' Create the image to write the barcodes to
  Dim codecs As RasterCodecs = New RasterCodecs()

  ' Write a few Four-State barcodes, a USPS, Royal Mail and Australian Post
  WriteBarcode(engine.Writer, image, BarcodeSymbology.USPS4State, "0123456709498765432101234567891", New LogicalRectangle(10, 100, 400, 200, LogicalUnit.Pixel))
  WriteBarcode(engine.Writer, image, BarcodeSymbology.RoyalMail4State, "123456789", New LogicalRectangle(10, 500, 400, 200, LogicalUnit.Pixel))
  WriteBarcode(engine.Writer, image, BarcodeSymbology.AustralianPost4State, "11-12345678", New LogicalRectangle(10, 900, 400, 200, LogicalUnit.Pixel))

  ' Save the image
  codecs.Save(image, outStream, RasterImageFormat.CcittGroup4, 1)

  ' Now read the barcodes again
  ' Read the USPS barcode
  ReadBarcodes(engine.Reader, image, BarcodeSymbology.USPS4State)

  ' Read the Royal Mail barcode
  ReadBarcodes(engine.Reader, image, BarcodeSymbology.RoyalMail4State)

  ' Read the Australian Post barcode
  ReadBarcodes(engine.Reader, image, BarcodeSymbology.AustralianPost4State)
End Sub

Private Sub WriteBarcode(ByVal writer As BarcodeWriter, ByVal image As RasterImage, ByVal symbology As BarcodeSymbology, ByVal value As String, ByVal bounds As LogicalRectangle)
  ' Create the barcode data
  Dim barcode As BarcodeData = New BarcodeData(symbology, value)
  barcode.Bounds = bounds

  ' Set the write options
  Dim options As FourStateBarcodeWriteOptions = New FourStateBarcodeWriteOptions()
  options.TextPosition = BarcodeOutputTextPosition.Default
  options.XModule = 30
  options.AustralianPostCIFEncoding = AustralianPost4StateBarcodeCIFEncoding.CTable

  ' Write it
  Console.WriteLine("Writing {0} barcode with data: {1}", symbology, value)
  writer.WriteBarcode(image, barcode, options)
End Sub

Private Sub ReadBarcodes(ByVal reader As BarcodeReader, ByVal image As RasterImage, ByVal symbology As BarcodeSymbology)
  ' Setup read options
  Dim options As FourStateBarcodeReadOptions = New FourStateBarcodeReadOptions()
  options.SearchDirection = BarcodeSearchDirection.Horizontal
  options.Granularity = 9
  options.ReturnCheckDigit = BarcodeReturnCheckDigit.Default
  options.AustralianPostCIFEncoding = AustralianPost4StateBarcodeCIFEncoding.CTable

  Console.WriteLine("Reading {0} barcodes", symbology)
  Dim barcode As BarcodeData = reader.ReadBarcode(image, LogicalRectangle.Empty, symbology, options)
  If Not barcode Is Nothing Then
    Console.WriteLine(" At {0}, data: {1}", barcode.Bounds, barcode.Value)
  Else
    Console.WriteLine(" Not found")
  End If
End Sub
必要条件

ターゲットプラットホーム

参照

参照

FourStateBarcodeReadOptionsメンバ
Leadtools.Barcode名前空間
BarcodeDataクラス
BarcodeReaderクラス
BarcodeSymbology列挙体
BarcodeEngineクラス
BarcodeReader.ReadBarcode
BarcodeReader.ReadBarcodes
LEADTOOLSバーコードによるプログラミング
サポートされているバーコード体系
バーコードサポートのロック解除
読み取りバーコードチュートリアル
LEADTOOLSのUSPSと4-状態バーコード

Leadtools.Barcodeは、バーコードモジュールのライセンスと、解除キーが必要です。詳細は、以下を参照してください。LEADTOOLSツールキット機能