EmfDocumentOptions Class

C#
Visual Basic
WinRT C#
Objective-C
Java
WinRT JavaScript
C++

public class EmfDocumentOptions : DocumentOptions

'Declaration
 
Public Class EmfDocumentOptions 
   Inherits DocumentOptions

'Usage
 
Dim instance As EmfDocumentOptions

public sealed class EmfDocumentOptions : DocumentOptions

function Leadtools.Forms.DocumentWriters.EmfDocumentOptions()

public ref class EmfDocumentOptions : public DocumentOptions

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:

Use the DocumentWriter.GetOptions method of the DocumentWriter object being used. Pass DocumentFormat.Emf to the format parameter. Note that the resulting object from the base DocumentOptions class needs to be cast to EmfDocumentOptions.
Use the various EmfDocumentOptions properties to change the options.
Use DocumentWriter.SetOptions to set the new options in the engine.
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.

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

Copy Code

Imports Leadtools.Forms.DocumentWriters
Imports Leadtools

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

   Dim outputFileName As String = Path.Combine(LEAD_VARS.ImagesDir, "Test.emf")
   Dim emfFileName As String = Path.Combine(LEAD_VARS.ImagesDir, "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

using Leadtools.Forms.DocumentWriters;
using Leadtools;

// 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()
{
   // Create a new instance of the LEADTOOLS Document Writer
   DocumentWriter docWriter = new DocumentWriter();

   string outputFileName = Path.Combine(LEAD_VARS.ImagesDir, "Test.emf");
   string emfFileName = Path.Combine(LEAD_VARS.ImagesDir, "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();
}

Target Platforms

Reference

EmfDocumentOptions Members
Leadtools.Forms.DocumentWriters Namespace
DocumentWriter Class
Programming with LEADTOOLS Document Writers
Files to be Included with Your Application
Unlocking Special LEAD Features