Public Property TransparentColor As RasterColor

Dim instance As RasterImage
Dim value As RasterColor
 
instance.TransparentColor = value
 
value = instance.TransparentColor

public RasterColor TransparentColor {get; set;}

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

Public Sub TransparentColorExample()
      Dim codecs As RasterCodecs = New RasterCodecs()

      Dim srcFileName As String = Path.Combine(LEAD_VARS.ImagesDir, "Ocr1.tif")
      Dim destFileName As String = Path.Combine(LEAD_VARS.ImagesDir, "Ocr1_Transparent.gif")

      ' Load the image
      Dim image As RasterImage = codecs.Load(srcFileName)

      ' Change the image's palette to be Red and Blue
      Dim redBluePalette As RasterColor() = New RasterColor(1) {}
      redBluePalette(0) = RasterColor.FromKnownColor(RasterKnownColor.Red)
      redBluePalette(1) = RasterColor.FromKnownColor(RasterKnownColor.Blue)
      image.SetPalette(redBluePalette, 0, 2)

      ' make red the transparent color
      image.Transparent = True
      image.TransparentColor = redBluePalette(0)

      ' Save the image
      codecs.Save(image, destFileName, RasterImageFormat.Gif, 8)

      ' Now load Ocr1_Transparent.gif in Internet Explorer.
      ' Notice how red is treated as a transparent color.
      ' You should get Blue text on a white background
      '    (if IE's background color is white).

      image.Dispose()
      codecs.Dispose()
   End Sub

Public NotInheritable Class LEAD_VARS
   Public Const ImagesDir As String = "C:\Users\Public\Documents\LEADTOOLS Images"
End Class

public void TransparentColorExample()
   {
      RasterCodecs codecs = new RasterCodecs();

      string srcFileName = Path.Combine(LEAD_VARS.ImagesDir, "Ocr1.tif");
      string destFileName = Path.Combine(LEAD_VARS.ImagesDir, "Ocr1_Transparent.gif");

      // Load the image
      RasterImage image = codecs.Load(srcFileName);

      // Change the image's palette to be Red and Blue
      RasterColor[] redBluePalette = new RasterColor[2];
      redBluePalette[0] = RasterColor.FromKnownColor(RasterKnownColor.Red);
      redBluePalette[1] = RasterColor.FromKnownColor(RasterKnownColor.Blue);
      image.SetPalette(redBluePalette, 0, 2);

      // make red the transparent color
      image.Transparent = true;
      image.TransparentColor = redBluePalette[0];

      // Save the image
      codecs.Save(image, destFileName, RasterImageFormat.Gif, 8);

      // Now load Ocr1_Transparent.gif in Internet Explorer.
      // Notice how red is treated as a transparent color.
      // You should get Blue text on a white background
      //    (if IE's background color is white).

      image.Dispose();
      codecs.Dispose();
   }

static class LEAD_VARS
{
   public const string ImagesDir = @"C:\Users\Public\Documents\LEADTOOLS Images";
}

public void TransparentColorExample(RasterImage image, Stream destStream)
{
   // Change the image's palette to be Red and Blue
   RasterColor[] redBluePalette = new RasterColor[2];
   redBluePalette[0] = RasterColorConverter.FromColor(Colors.Red);
   redBluePalette[1] = RasterColorConverter.FromColor(Colors.Blue);
   image.SetPalette(redBluePalette, 0, 2);
   // make red the transparent color
   image.Transparent = true;
   image.TransparentColor = redBluePalette[0];

   // Save the image
   RasterCodecs codecs = new RasterCodecs();
   codecs.Save(image, destStream, RasterImageFormat.Gif, 8);

   // Now load Ocr1_Transparent.gif in Internet Explorer.
   // Notice how red is treated as a transparent color.
   // You should get Blue text on a white background
   //    (if IE's background color is white).

   image.Dispose();
}

Public Sub TransparentColorExample(ByVal image As RasterImage, ByVal destStream As Stream)
   ' Change the image's palette to be Red and Blue
   Dim redBluePalette As RasterColor() = New RasterColor(1){}
   redBluePalette(0) = RasterColorConverter.FromColor(Colors.Red)
   redBluePalette(1) = RasterColorConverter.FromColor(Colors.Blue)
   image.SetPalette(redBluePalette, 0, 2)
   ' make red the transparent color
   image.Transparent = True
   image.TransparentColor = redBluePalette(0)

   ' Save the image
   Dim codecs As RasterCodecs = New RasterCodecs()
   codecs.Save(image, destStream, RasterImageFormat.Gif, 8)

   ' Now load Ocr1_Transparent.gif in Internet Explorer.
   ' Notice how red is treated as a transparent color.
   ' You should get Blue text on a white background
   '    (if IE's background color is white).

   image.Dispose()
End Sub