RasterImageGdiPlusGraphicsContainer Class

Visual Basic
C#
WinRT C#
WinRT JavaScript
C++

public class RasterImageGdiPlusGraphicsContainer : System.IDisposable

'Declaration
 
Public Class RasterImageGdiPlusGraphicsContainer 
   Implements System.IDisposable

'Usage
 
Dim instance As RasterImageGdiPlusGraphicsContainer

public sealed class RasterImageGdiPlusGraphicsContainer : IClosable //In WinRT the IDisposable interface is replaced by IClosable

function Leadtools.Drawing.RasterImageGdiPlusGraphicsContainer()

public ref class RasterImageGdiPlusGraphicsContainer : public System.IDisposable

This class holds the System.Drawing.Graphics, System.Drawing.Image and System.Drawing.Region representation of the surface of the Leadtools.RasterImage.

You can then use the members of the RasterImageGdiPlusGraphicsContainer along with GDI+ calls to draw on the surface of the Leadtools.RasterImage.

You can also use the RasterImagePainter.CreateGraphics method to create a GDI+ Graphics object from a Leadtools.RasterImage.

For more information refer to RasterImage and GDI/GDI+.

Visual Basic
C#
WinRT C#
WinRT JavaScript
Silverlight C#
Silverlight VB

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

      Dim srcFileName As String = Path.Combine(LEAD_VARS.ImagesDir, "Image1.cmp")
      Dim destFileName As String = Path.Combine(LEAD_VARS.ImagesDir, "Image1_CreateGdiPlusGraphics.bmp")

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

         ' Create a graphics object for this image surface and draw something on it
         Using container As RasterImageGdiPlusGraphicsContainer = New RasterImageGdiPlusGraphicsContainer(image)
            Using g As Graphics = container.Graphics
               Using b As New SolidBrush(Color.FromArgb(128, 0, 0, 0))
                  g.FillEllipse(b, New Rectangle(0, 0, image.ImageWidth, image.ImageHeight))
               End Using
            End Using
         End Using

         ' Save the image back on disk
         codecs.Save(image, destFileName, RasterImageFormat.Bmp, 24)
      End Using

      codecs.Dispose()
   End Sub

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

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

      string srcFileName = Path.Combine(LEAD_VARS.ImagesDir, "Image1.cmp");
      string destFileName = Path.Combine(LEAD_VARS.ImagesDir, "Image1_CreateGdiPlusGraphics.bmp");

      // Load the image
      using(RasterImage image = codecs.Load(srcFileName))
      {
         // Create a graphics object for this image surface and draw something on it
         using(RasterImageGdiPlusGraphicsContainer container = new RasterImageGdiPlusGraphicsContainer(image))
         {
            using(Graphics g = container.Graphics)
            {
               using(Brush b = new SolidBrush(Color.FromArgb(128, 0, 0, 0)))
               {
                  g.FillEllipse(b, new Rectangle(0, 0, image.ImageWidth, image.ImageHeight));
               }
            }
         }

         // Save the image back on disk
         codecs.Save(image, destFileName, RasterImageFormat.Bmp, 24);
      }

      codecs.Dispose();
   }

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

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

RasterImageGdiPlusGraphicsContainer Members
Leadtools.Drawing Namespace