Public ReadOnly Property HasRegion As Boolean

Dim instance As RasterImage
Dim value As Boolean
 
value = instance.HasRegion

public bool HasRegion {get;}

public:
property bool HasRegion {
   bool get();
}

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

      Dim srcFileName As String = Path.Combine(LEAD_VARS.ImagesDir, "Image1.cmp")
      Dim destFileName1 As String = Path.Combine(LEAD_VARS.ImagesDir, "Image1_InvertRegion.bmp")
      Dim destFileName2 As String = Path.Combine(LEAD_VARS.ImagesDir, "Image1_InvertNoRegion.bmp")

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

      ' The image should have no region
      Console.WriteLine("After loading, HasRegion = {0}", image.HasRegion)
      Debug.Assert((Not image.HasRegion))

      ' Add a region to the image
      Dim rc As LeadRect = New LeadRect(0, 0, image.Width \ 4, image.Height \ 4)
      image.AddEllipseToRegion(Nothing, rc, RasterRegionCombineMode.Set)

      ' The image should have a region now
      Console.WriteLine("After AddEllipseToRegion, HasRegion = {0}", image.HasRegion)
      Debug.Assert(image.HasRegion)

      ' Invert this image and save it to a file
      Dim command As InvertCommand = New InvertCommand()
      command.Run(image)
      codecs.Save(image, destFileName1, RasterImageFormat.Bmp, 24)

      ' Get rid of the region
      image.MakeRegionEmpty()

      ' The image should not have a region now
      Console.WriteLine("After MakeRegionEmpty, HasRegion = {0}", image.HasRegion)
      Debug.Assert((Not image.HasRegion))

      ' Invert again and save it
      command.Run(image)
      codecs.Save(image, destFileName2, RasterImageFormat.Bmp, 24)

      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 RegionExample()
   {
      RasterCodecs codecs = new RasterCodecs();

      string srcFileName = Path.Combine(LEAD_VARS.ImagesDir, "Image1.cmp");
      string destFileName1 = Path.Combine(LEAD_VARS.ImagesDir, "Image1_InvertRegion.bmp");
      string destFileName2 = Path.Combine(LEAD_VARS.ImagesDir, "Image1_InvertNoRegion.bmp");

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

      // The image should have no region
      Console.WriteLine("After loading, HasRegion = {0}", image.HasRegion);
      Debug.Assert(!image.HasRegion);

      // Add a region to the image
      LeadRect rc = new LeadRect(0, 0, image.Width / 4, image.Height / 4);
      image.AddEllipseToRegion(null, rc, RasterRegionCombineMode.Set);

      // The image should have a region now
      Console.WriteLine("After AddEllipseToRegion, HasRegion = {0}", image.HasRegion);
      Debug.Assert(image.HasRegion);

      // Invert this image and save it to a file
      InvertCommand command = new InvertCommand();
      command.Run(image);
      codecs.Save(image, destFileName1, RasterImageFormat.Bmp, 24);

      // Get rid of the region
      image.MakeRegionEmpty();

      // The image should not have a region now
      Console.WriteLine("After MakeRegionEmpty, HasRegion = {0}", image.HasRegion);
      Debug.Assert(!image.HasRegion);

      // Invert again and save it
      command.Run(image);
      codecs.Save(image, destFileName2, RasterImageFormat.Bmp, 24);

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

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

public void RegionExample(RasterImage image, Stream destStream1, Stream destStream2)
{
   RasterCodecs codecs = new RasterCodecs();
   // The image should have no region
   Debug.WriteLine("After loading, HasRegion = {0}", image.HasRegion);
   Debug.Assert(!image.HasRegion);

   // Add a region to the image
   LeadRect rc = new LeadRect(0, 0, image.Width / 4, image.Height / 4);
   image.AddRectangleToRegion(null, rc, RasterRegionCombineMode.Set);

   // The image should have a region now
   Debug.WriteLine("After AddRectangleToRegion, HasRegion = {0}", image.HasRegion);
   Debug.Assert(image.HasRegion);

   // Invert this image and save it to a file
   InvertCommand command = new InvertCommand();
   command.Run(image);
   codecs.Save(image, destStream1, RasterImageFormat.Bmp, 0);

   // Get rid of the region
   image.MakeRegionEmpty();

   // The image should not have a region now
   Debug.WriteLine("After MakeRegionEmpty, HasRegion = {0}", image.HasRegion);
   Debug.Assert(!image.HasRegion);

   // Invert again and save it
   command.Run(image);
   codecs.Save(image, destStream2, RasterImageFormat.Bmp, 0);

   image.Dispose();
}

Public Sub RegionExample(ByVal image As RasterImage, ByVal destStream1 As Stream, ByVal destStream2 As Stream)
   Dim codecs As RasterCodecs = New RasterCodecs()
   ' The image should have no region
   Debug.WriteLine("After loading, HasRegion = {0}", image.HasRegion)
   Debug.Assert((Not image.HasRegion))

   ' Add a region to the image
   Dim rc As LeadRect = New LeadRect(0, 0, image.Width / 4, image.Height / 4)
   image.AddRectangleToRegion(Nothing, rc, RasterRegionCombineMode.Set)

   ' The image should have a region now
   Debug.WriteLine("After AddRectangleToRegion, HasRegion = {0}", image.HasRegion)
   Debug.Assert(image.HasRegion)

   ' Invert this image and save it to a file
   Dim command As InvertCommand = New InvertCommand()
   command.Run(image)
   codecs.Save(image, destStream1, RasterImageFormat.Bmp, 0)

   ' Get rid of the region
   image.MakeRegionEmpty()

   ' The image should not have a region now
   Debug.WriteLine("After MakeRegionEmpty, HasRegion = {0}", image.HasRegion)
   Debug.Assert((Not image.HasRegion))

   ' Invert again and save it
   command.Run(image)
   codecs.Save(image, destStream2, RasterImageFormat.Bmp, 0)

   image.Dispose()
End Sub