BackColor Property

Summary

Gets or sets the barcode background (spaces) color used when writing barcodes.

Syntax

Objective-C

C++/CLI

Java

Python

public RasterColor BackColor { get; set; }

@property (nonatomic, copy) LTRasterColor *backColor;

public RasterColor getBackColor() 
public void setBackColor(RasterColor value)

public: 
property RasterColor BackColor { 
   RasterColor get(); 
   void set (    RasterColor ); 
}

BackColor # get and set (BarcodeWriteOptions)

Property Value

A RasterColor that specifies the barcode background (spaces) color to use when writing barcodes. Default value is "White" (RGB of #FFFFFF). The default value is #FFFFFFFF.

Remarks

LEADTOOLS will use ForeColor and BackColor when drawing the new barcode to the image and no special processing is performed. Note that you can specify a transparent color for BackColor to "overlay" the barcode on top of the background of the image. This however is not recommended.

Example

using Leadtools; 
using Leadtools.Codecs; 
using Leadtools.Barcode; 
using Leadtools.ImageProcessing; 
 
 
public void BarcodeWriteOptions_ColorsExample() 
{ 
   string imageFileName = Path.Combine(LEAD_VARS.ImagesDir, "MyBarcode.png"); 
 
   BarcodeEngine engine = new BarcodeEngine(); 
   BarcodeWriter writer = engine.Writer; 
 
   // We will create a Red over Yellow backround 
   RasterColor foreColor = RasterColor.FromKnownColor(RasterKnownColor.Red); 
   RasterColor backColor = RasterColor.FromKnownColor(RasterKnownColor.Yellow); 
 
   // Create a UPC-A barcode 
   BarcodeData barcode = BarcodeData.CreateDefaultBarcodeData(BarcodeSymbology.UPCA); 
   barcode.Bounds = new LeadRect(0, 0, 400, 200); 
 
   // Create a 24 BPP image the same size as the barcode 
   // The image will have red over yellow colors 
   int resolution = 300; 
   LeadRect pixels = barcode.Bounds; 
   using (RasterImage image = RasterImage.Create(pixels.Width, pixels.Height, 24, resolution, backColor)) 
   { 
      // Change the barcode colors to be Red over Yellow 
      OneDBarcodeWriteOptions options = writer.GetDefaultOptions(BarcodeSymbology.UPCA) as OneDBarcodeWriteOptions; 
      options.ForeColor = foreColor; 
      options.BackColor = backColor; 
 
      // Write the barcode 
      writer.WriteBarcode(image, barcode, options); 
 
      // Save as PNG 
      using (RasterCodecs codecs = new RasterCodecs()) 
      { 
         codecs.Save(image, imageFileName, RasterImageFormat.Png, 24); 
      } 
   } 
} 
 
static class LEAD_VARS 
{ 
   public const string ImagesDir = @"C:\LEADTOOLS22\Resources\Images"; 
}

Requirements

Target Platforms

Reference

BarcodeWriteOptions Class

BarcodeWriteOptions Members

ForeColor Property

Download our FREE evaluation

Help Version 22.0.2023.5.9