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Clone() Method
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Leadtools Namespace > RasterImage Class > Clone Method : Clone() Method



Creates an exact copy of the current page of this RasterImage.

Syntax

Visual Basic (Declaration) 
Public Overloads Function Clone() As RasterImage
Visual Basic (Usage)Copy Code
Dim instance As RasterImage
Dim value As RasterImage
 
value = instance.Clone()
C# 
public RasterImage Clone()
C++/CLI 
public:
RasterImage^ Clone();

Return Value

The RasterImage this method creates.

Example

This example loads a multi-page image and clones it in 3 different ways.

Visual BasicCopy Code
Public Sub CloneExample()
   RasterCodecs.Startup()
   Dim codecs As RasterCodecs = New RasterCodecs()

   Dim srcFileName As String = LeadtoolsExamples.Common.ImagesPath.Path + "eye.gif"

   ' Load the multi-page image
   Dim srcImage As RasterImage = codecs.Load(srcFileName)
   Console.WriteLine("Pages in source image: {0}", srcImage.PageCount)

   ' Use the Clone method to clone this image
   ' Notice, this method only clones the current active page only
   Dim destImage1 As RasterImage = srcImage.Clone()
   Console.WriteLine("Pages in image created with Clone: {0}", destImage1.PageCount)
   Debug.Assert(destImage1.PageCount = 1)

   ' Use the Clone rectangle method to clone this image
   ' Notice, this method also clones the current active page only
   Dim rc As Rectangle = New Rectangle(0, 0, srcImage.Width \ 2, srcImage.Height \ 2)
   Console.WriteLine("Cloning with a rectangle = {0}", rc.ToString())
   Dim destImage2 As RasterImage = srcImage.Clone(rc)
   Console.WriteLine("Pages in image created with Clone(Rectangle): {0}", destImage2.PageCount)
   Console.WriteLine("Image created with Clone(Rectangle) size = {0} by {1}", destImage2.Width, destImage2.Height)
   Debug.Assert(destImage2.PageCount = 1)
   Debug.Assert(destImage2.Width = srcImage.Width \ 2)
   Debug.Assert(destImage2.Height = srcImage.Height \ 2)

   ' Use the CloneAll method, this should create a copy
   ' of all the pages
   Dim destImage3 As RasterImage = srcImage.CloneAll()
   Console.WriteLine("Pages in image created with CloneAll: {0}", destImage3.PageCount)
   Debug.Assert(destImage3.PageCount = srcImage.PageCount)

   ' Use the CloneCommand, this allows you to have a progress
   ' bar as well as control the memory flags, here
   ' we will create a destination image using disk memory.
   Dim cloneCmd As CloneCommand = New CloneCommand()
   AddHandler cloneCmd.Progress, AddressOf cloneCmd_Progress
   cloneCmd.CreateFlags = RasterMemoryFlags.Disk
   cloneCmd.Run(srcImage)
   RemoveHandler cloneCmd.Progress, AddressOf cloneCmd_Progress

   Dim destImage4 As RasterImage = cloneCmd.DestinationImage
   Console.WriteLine("Pages in image created with CloneCommand: {0}", destImage4.PageCount)
   Console.WriteLine("Disk memory model of image created with CloneCommand: {0}", destImage4.IsDiskMemory)
   Debug.Assert(destImage4.PageCount = 1)
   Debug.Assert(destImage4.IsDiskMemory)

   ' Clean up
   destImage4.Dispose()
   destImage3.Dispose()
   destImage2.Dispose()
   destImage1.Dispose()
   srcImage.Dispose()
   codecs.Dispose()
   RasterCodecs.Shutdown()
End Sub

Private Sub cloneCmd_Progress(ByVal sender As Object, ByVal e As RasterCommandProgressEventArgs)
   If e.Percent = 0 Then
      Console.WriteLine("Clone progress started")
   End If
   If e.Percent = 100 Then
      Console.WriteLine("Clone progress ended")
   End If
End Sub
C#Copy Code
public void CloneExample() 
{ 
   RasterCodecs.Startup(); 
   RasterCodecs codecs = new RasterCodecs(); 
 
   string srcFileName = LeadtoolsExamples.Common.ImagesPath.Path + "eye.gif"; 
 
   // Load the multi-page image 
   RasterImage srcImage = codecs.Load(srcFileName); 
   Console.WriteLine("Pages in source image: {0}", srcImage.PageCount); 
 
   // Use the Clone method to clone this image 
   // Notice, this method only clones the current active page only 
   RasterImage destImage1 = srcImage.Clone(); 
   Console.WriteLine("Pages in image created with Clone: {0}", destImage1.PageCount); 
   Debug.Assert(destImage1.PageCount == 1); 
 
   // Use the Clone rectangle method to clone this image 
   // Notice, this method also clones the current active page only 
   Rectangle rc = new Rectangle(0, 0, srcImage.Width / 2, srcImage.Height / 2); 
   Console.WriteLine("Cloning with a rectangle = {0}", rc.ToString()); 
   RasterImage destImage2 = srcImage.Clone(rc); 
   Console.WriteLine("Pages in image created with Clone(Rectangle): {0}", destImage2.PageCount); 
   Console.WriteLine("Image created with Clone(Rectangle) size = {0} by {1}", destImage2.Width, destImage2.Height); 
   Debug.Assert(destImage2.PageCount == 1); 
   Debug.Assert(destImage2.Width == srcImage.Width / 2); 
   Debug.Assert(destImage2.Height == srcImage.Height / 2); 
 
   // Use the CloneAll method, this should create a copy 
   // of all the pages 
   RasterImage destImage3 = srcImage.CloneAll(); 
   Console.WriteLine("Pages in image created with CloneAll: {0}", destImage3.PageCount); 
   Debug.Assert(destImage3.PageCount == srcImage.PageCount); 
 
   // Use the CloneCommand, this allows you to have a progress 
   // bar as well as control the memory flags, here 
   // we will create a destination image using disk memory. 
   CloneCommand cloneCmd = new CloneCommand(); 
   cloneCmd.Progress += new EventHandler<RasterCommandProgressEventArgs>(cloneCmd_Progress); 
   cloneCmd.CreateFlags = RasterMemoryFlags.Disk; 
   cloneCmd.Run(srcImage); 
   cloneCmd.Progress -= new EventHandler<RasterCommandProgressEventArgs>(cloneCmd_Progress); 
 
   RasterImage destImage4 = cloneCmd.DestinationImage; 
   Console.WriteLine("Pages in image created with CloneCommand: {0}", destImage4.PageCount); 
   Console.WriteLine("Disk memory model of image created with CloneCommand: {0}", destImage4.IsDiskMemory); 
   Debug.Assert(destImage4.PageCount == 1); 
   Debug.Assert(destImage4.IsDiskMemory); 
 
   // Clean up 
   destImage4.Dispose(); 
   destImage3.Dispose(); 
   destImage2.Dispose(); 
   destImage1.Dispose(); 
   srcImage.Dispose(); 
   codecs.Dispose(); 
   RasterCodecs.Shutdown(); 
} 
 
void cloneCmd_Progress(object sender, RasterCommandProgressEventArgs e) 
{ 
   if(e.Percent == 0) 
      Console.WriteLine("Clone progress started"); 
   if(e.Percent == 100) 
      Console.WriteLine("Clone progress ended"); 
}

Remarks

You can also use the _ctor constructor to create an exact copy of an existing RasterImage.

To create a copy of an object while maintaining a progress status, refer to the CloneCommand.

This method copies only the current active page and no metadata information is copied. To create an exact copy of a RasterImage object use the CloneAll method.

To clone an image with support for a progress event, refer to CloneCommand.

Requirements

Target Platforms: Microsoft .NET Framework 3.0, Windows XP, Windows Server 2003 family, Windows Server 2008 family

See Also