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EmfDocumentOptions Class
See Also  Members   Example 
Leadtools.Forms.DocumentWriters Namespace : EmfDocumentOptions Class



Provides extra options to use when saving a document using the Windows Enhanced Meta File (EMF) format.

Syntax

Visual Basic (Declaration) 
Public Class EmfDocumentOptions 
   Inherits DocumentOptions
Visual Basic (Usage)Copy Code
Dim instance As EmfDocumentOptions
C# 
public class EmfDocumentOptions : DocumentOptions 
C++/CLI 
public ref class EmfDocumentOptions : public DocumentOptions 

Example

This example will create a new Windows Enhanced Meta File (EMF) file using the various supported options.

Visual BasicCopy Code
' Windows API functions needed to load/delete an EMF
<DllImport("gdi32.dll")> _
Private Shared Function GetEnhMetaFile(ByVal lpszMetaFile As String) As IntPtr
End Function
<DllImport("gdi32.dll")> _
Private Shared Function DeleteEnhMetaFile(ByVal hemf As IntPtr) As Boolean
End Function

Private Sub EmfDocumentOptionsExample()
   ' Unlock the support needed for LEADTOOLS Document Writers (with PDF output)
   RasterSupport.Unlock(RasterSupportType.DocumentWriters, "Replace with your own key here")

   ' Create a new instance of the LEADTOOLS Document Writer
   Dim docWriter As New DocumentWriter()

   Dim outputFileName As String = LeadtoolsExamples.Common.ImagesPath.Path + "Test.emf"
   Dim emfFileName As String = LeadtoolsExamples.Common.ImagesPath.Path + "Ocr1.emf"

   ' Create a new EMF document
   Console.WriteLine("Creating new EMF document: {0}", outputFileName)
   docWriter.BeginDocument(outputFileName, DocumentFormat.Emf)

   ' Use the Windows API to load the EMF
   Dim emfHandle As IntPtr = GetEnhMetaFile(emfFileName)

   ' Add the page
   Dim page As DocumentPage = DocumentPage.Empty
   page.EmfHandle = emfHandle
   page.Image = Nothing

   Console.WriteLine("Adding EMF page from: {0}", emfFileName)
   docWriter.AddPage(page)

   ' Use the Windows API to delete the EMF
   DeleteEnhMetaFile(emfHandle)

   ' Finally finish writing the PDF file on disk
   docWriter.EndDocument()
End Sub
C#Copy Code
// Windows API functions needed to load/delete an EMF 
[DllImport("gdi32.dll")] 
private static extern IntPtr GetEnhMetaFile(string lpszMetaFile); 
[DllImport("gdi32.dll")] 
private static extern bool DeleteEnhMetaFile(IntPtr hemf); 
private void EmfDocumentOptionsExample() 

   // Unlock the support needed for LEADTOOLS Document Writers (with PDF output) 
   RasterSupport.Unlock(RasterSupportType.DocumentWriters, "Replace with your own key here"); 
 
   // Create a new instance of the LEADTOOLS Document Writer 
   DocumentWriter docWriter = new DocumentWriter(); 
 
   string outputFileName = LeadtoolsExamples.Common.ImagesPath.Path + "Test.emf"; 
   string emfFileName = LeadtoolsExamples.Common.ImagesPath.Path + "Ocr1.emf"; 
 
   // Create a new EMF document 
   Console.WriteLine("Creating new EMF document: {0}", outputFileName); 
   docWriter.BeginDocument(outputFileName, DocumentFormat.Emf); 
 
   // Use the Windows API to load the EMF 
   IntPtr emfHandle = GetEnhMetaFile(emfFileName); 
 
   // Add the page 
   DocumentPage page = DocumentPage.Empty; 
   page.EmfHandle = emfHandle; 
   page.Image = null; 
 
   Console.WriteLine("Adding EMF page from: {0}", emfFileName); 
   docWriter.AddPage(page); 
 
   // Use the Windows API to delete the EMF 
   DeleteEnhMetaFile(emfHandle); 
 
   // Finally finish writing the PDF file on disk 
   docWriter.EndDocument(); 
}

Remarks

The Windows Enhanced Meta File (EMF) format does not support multi-page documents. Therefore, only the last page added with the DocumentWriter.AddPage will be used in the final document.

The options set in the EmfDocumentOptions class will be used when the user saves a document using the DocumentFormat.Emf format.

To change the options used with the EMF format, perform the following steps:

  1. Use the DocumentWriter.GetOptions method of the DocumentWriter object being used. Passing DocumentFormat.Emf to the Format parameter. Note that the resulting object from the base DocumentOptions class needs to be cast to EmfDocumentOptions.
  2. Use the various EmfDocumentOptions properties to change the options.
  3. Use DocumentWriter.SetOptions to set the new options in the engine.
  4. Now you can call the DocumentWriter.BeginDocument method (with DocumentFormat.Emf for the format parameter) to create a new document and add the pages.

Currently, the EmfDocumentOptions class contains no extra options.

Inheritance Hierarchy

System.Object
   Leadtools.Forms.DocumentWriters.DocumentOptions
      Leadtools.Forms.DocumentWriters.EmfDocumentOptions

Requirements

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

See Also

Leadtools.Forms.DocumentWriters requires a Document or Medical toolkit license and unlock key. For more information, refer to: Imaging Pro/Document/Medical Features