This example will create a new Adobe Portable Document Format document (PDF) file using the various supported options.

Visual Basic

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' 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 PdfDocumentOptionsExample()    ' Unlock the support needed for LEADTOOLS Document Writers (with PDF output)    RasterSupport.Unlock(RasterSupportType.DocumentWriters, "Replace with your own key here")    RasterSupport.Unlock(RasterSupportType.DocumentWritersPdf, "Replace with your own key here")    ' We are going to use RasterCodecs to load a TIF file    RasterCodecs.Startup()    Dim codecs As New RasterCodecs()    ' Create a new instance of the LEADTOOLS Document Writer    Dim docWriter As New DocumentWriter()    Dim pdfFileName1 As String = LeadtoolsExamples.Common.ImagesPath.Path + "Test1.pdf"    Dim pdfFileName2 As String = LeadtoolsExamples.Common.ImagesPath.Path + "Test2.pdf"    Dim emfFileName As String = LeadtoolsExamples.Common.ImagesPath.Path + "Ocr1.emf"    Dim tifFileName As String = LeadtoolsExamples.Common.ImagesPath.Path + "Ocr1.tif"    ' Create a new PDF document with: PDF and no image/text    dim pdfOptions as PdfDocumentOptions = directcast(docWriter.GetOptions(DocumentFormat.Pdf) , PdfDocumentOptions)    pdfOptions.DocumentType = PdfDocumentType.Pdf    pdfOptions.FontEmbedMode = DocumentFontEmbedMode.None    pdfOptions.ImageOverText = False    docWriter.SetOptions(DocumentFormat.Pdf, pdfOptions)    Console.WriteLine("Creating new PDF document: {0}", pdfFileName1)    docWriter.BeginDocument(pdfFileName1, DocumentFormat.Pdf)    ' Use the Windows API to load the EMF    Dim emfHandle As IntPtr = GetEnhMetaFile(emfFileName)    ' Add the page, notice we will not be using image/text feature (the default)    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()    ' Now create a new PDF document with: PDF/A and image/text    pdfOptions = DirectCast(docWriter.GetOptions(DocumentFormat.Pdf), PdfDocumentOptions)    pdfOptions.DocumentType = PdfDocumentType.PdfA    pdfOptions.FontEmbedMode = DocumentFontEmbedMode.All    pdfOptions.ImageOverText = True    pdfOptions.Linearized = False    pdfOptions.Title = "Add your title here"    pdfOptions.Subject = "Add your subject here"    pdfOptions.Keywords = "Add your keywords here"    pdfOptions.Author = "Add author name here"    pdfOptions.Protected = True    pdfOptions.UserPassword = "User password"    pdfOptions.OwnerPassword = "Owner password"    pdfOptions.EncryptionMode = PdfDocumentEncryptionMode.RC128Bit    pdfOptions.PrintEnabled = False    pdfOptions.HighQualityPrintEnabled = True    pdfOptions.CopyEnabled = False    pdfOptions.EditEnabled = True    pdfOptions.AnnotationsEnabled = True    pdfOptions.AssemblyEnabled = False    ' Use default resolution    pdfOptions.DocumentResolution = 0    pdfOptions.PageRestriction = DocumentPageRestriction.Relaxed    ' Setup empty page size (Letter size)    pdfOptions.EmptyPageWidth = 8.5    pdfOptions.EmptyPageHeight = 11    pdfOptions.EmptyPageResolution = 300    docWriter.SetOptions(DocumentFormat.Pdf, pdfOptions)    Console.WriteLine("Creating new PDF document: {0}", pdfFileName2)    docWriter.BeginDocument(pdfFileName2, DocumentFormat.Pdf)    ' Use the Windows API to load the EMF    emfHandle = GetEnhMetaFile(emfFileName)    Dim image As RasterImage = codecs.Load(tifFileName, 0, CodecsLoadByteOrder.BgrOrGray, 1, 1)    ' Add the page, notice we will be using image/text feature    page = DocumentPage.Empty    page.EmfHandle = emfHandle    page.Image = image    Console.WriteLine("Adding EMF page from: {0}", emfFileName)    docWriter.AddPage(page)    ' Use the Windows API to delete the EMF    DeleteEnhMetaFile(emfHandle)    ' We don't need the image anymore    image.Dispose()    ' Finally finish writing the PDF file on disk    docWriter.EndDocument()    codecs.Dispose()    RasterCodecs.Shutdown() End Sub

C#

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// 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 PdfDocumentOptionsExample()  {     // Unlock the support needed for LEADTOOLS Document Writers (with PDF output)     RasterSupport.Unlock(RasterSupportType.DocumentWriters, "Replace with your own key here");     RasterSupport.Unlock(RasterSupportType.DocumentWritersPdf, "Replace with your own key here");       // We are going to use RasterCodecs to load a TIF file     RasterCodecs.Startup();     RasterCodecs codecs = new RasterCodecs();       // Create a new instance of the LEADTOOLS Document Writer     DocumentWriter docWriter = new DocumentWriter();       string pdfFileName1 = LeadtoolsExamples.Common.ImagesPath.Path + "Test1.pdf";     string pdfFileName2 = LeadtoolsExamples.Common.ImagesPath.Path + "Test2.pdf";       string emfFileName = LeadtoolsExamples.Common.ImagesPath.Path + "Ocr1.emf";     string tifFileName = LeadtoolsExamples.Common.ImagesPath.Path + "Ocr1.tif";       // Create a new PDF document with: PDF and no image/text     PdfDocumentOptions pdfOptions = docWriter.GetOptions(DocumentFormat.Pdf) as PdfDocumentOptions;     pdfOptions.DocumentType = PdfDocumentType.Pdf;     pdfOptions.FontEmbedMode = DocumentFontEmbedMode.None;     pdfOptions.ImageOverText = false;     pdfOptions.Linearized = false;     pdfOptions.Title = "Add your title here";     pdfOptions.Subject = "Add your subject here";     pdfOptions.Keywords = "Add your keywords here";     pdfOptions.Author = "Add author name here";     pdfOptions.Protected = true;     pdfOptions.UserPassword = "User password";     pdfOptions.OwnerPassword = "Owner password";     pdfOptions.EncryptionMode = PdfDocumentEncryptionMode.RC128Bit;     pdfOptions.PrintEnabled = false;     pdfOptions.HighQualityPrintEnabled = true;     pdfOptions.CopyEnabled = false;     pdfOptions.EditEnabled = true;     pdfOptions.AnnotationsEnabled = true;     pdfOptions.AssemblyEnabled = false;       // Use default resolution     pdfOptions.DocumentResolution = 0;     pdfOptions.PageRestriction = DocumentPageRestriction.Relaxed;       // Setup empty page size (Letter size)     pdfOptions.EmptyPageWidth = 8.5;     pdfOptions.EmptyPageHeight = 11;     pdfOptions.EmptyPageResolution = 300;       docWriter.SetOptions(DocumentFormat.Pdf, pdfOptions);       Console.WriteLine("Creating new PDF document: {0}", pdfFileName1);     docWriter.BeginDocument(pdfFileName1, DocumentFormat.Pdf);       // Use the Windows API to load the EMF     IntPtr emfHandle = GetEnhMetaFile(emfFileName);       // Add the page, notice we will not be using image/text feature (the default)     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();       // Now create a new PDF document with: PDF/A and image/text     pdfOptions = docWriter.GetOptions(DocumentFormat.Pdf) as PdfDocumentOptions;     pdfOptions.DocumentType = PdfDocumentType.PdfA;     pdfOptions.FontEmbedMode = DocumentFontEmbedMode.All;     pdfOptions.ImageOverText = true;     docWriter.SetOptions(DocumentFormat.Pdf, pdfOptions);       Console.WriteLine("Creating new PDF document: {0}", pdfFileName2);     docWriter.BeginDocument(pdfFileName2, DocumentFormat.Pdf);       // Use the Windows API to load the EMF     emfHandle = GetEnhMetaFile(emfFileName);     RasterImage image = codecs.Load(tifFileName, 0, CodecsLoadByteOrder.BgrOrGray, 1, 1);       // Add the page, notice we will be using image/text feature     page = DocumentPage.Empty;     page.EmfHandle = emfHandle;     page.Image = image;       Console.WriteLine("Adding EMF page from: {0}", emfFileName);     docWriter.AddPage(page);       // Use the Windows API to delete the EMF     DeleteEnhMetaFile(emfHandle);       // We don't need the image anymore     image.Dispose();       // Finally finish writing the PDF file on disk     docWriter.EndDocument();       codecs.Dispose();     RasterCodecs.Shutdown();  }

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

Before using the LEADTOOLS Document Writer to create PDF documents, you must unlock the RasterSupportType.DocumentWritersPdf key unless the document writers are being used from the LEADTOOLS OCR engine. For more information, refer to Unlocking Special LEAD Features.

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

1. Use the DocumentWriter.GetOptions method of the DocumentWriter object being used. Passing DocumentFormat.Pdf to the Format parameter. Note that the resulting object from the base DocumentOptions class needs to be cast to PdfDocumentOptions.
2. Use the various PdfDocumentOptions 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 (again, with DocumentFormat.Pdf for the Format parameter) to create a new document and add the pages.

The PdfDocumentOptions class contains the following features:

Feature	Description
Set the PDF document type to PDF or PDF/A.	Use the PdfDocumentOptions.DocumentType property to set the document type to either PDF or PDF/A.
Control the font embedding mode	Use the PdfDocumentOptions.FontEmbedMode property to control how the fonts are embedded in the resulting PDF document. Note that PdfDocumentOptions.FontEmbedMode is not used when saving PDF/A files; all fonts are always embedded in the file.
Add an image as an overlay on top of the PDF content.	Use the PdfDocumentOptions.ImageOverText property to add the original raster image as an overlay on top of the PDF content. The resulting document will look exactly like the original document. If this option is used, the overlay image must be set in the Image property of the DocumentPage object passed to the DocumentWriter.AddPage method.
Create linearized PDF documents optimized for fast web viewing.	A linearized PDF file is a file that has been organized in a special way to enable efficient incremental access in a network environment. This allows the first page of the PDF file to be displayed in a user Web browser before the entire file is downloaded from the Web server. To enable the creation of linearized PDF documents, use the PdfDocumentOptions.Linearized property.
Set the PDF document metadata	The resulting PDF can contain optional metadata associated with the document. This metadata can be used by external search and indexing engines to search and classify PDF documents. Use the PdfDocumentOptions.Title, PdfDocumentOptions.Subject, PdfDocumentOptions.Author and PdfDocumentOptions.Keywords to set the document metadata.
Security, access rights and Encryption	PDF documents can be protected (secured) using two methods: Protected against viewing. PDF viewers will request a password from the user when the document is opened for viewing. This password is called the user password. The created PDF document can be protected by setting the PdfDocumentOptions.Protected property to true and the PdfDocumentOptions.UserPassword property to the password value. Protected against editing. PDF editor will request a password from the user when the document is opened for editing. This password is called the owner password. The created PDF document can be protected by setting the PdfDocumentOptions.Protected property to true and the PdfDocumentOptions.OwnerPassword property to the password value. When a PDF document is protected against editing (through the use of an owner password), an encryption level and owner access rights can be granted or denied in the resulting document. The following table lists the PDF access rights supported by the LEADTOOLS Document Writers: Encryption Owner Access Right Low (PdfDocumentOptions.EncryptionMode set to PdfDocumentEncryptionMode.RC40Bit) Printing (PdfDocumentOptions.PrintEnabled), Copying text (PdfDocumentOptions.CopyEnabled), Editing (PdfDocumentOptions.EditEnabled) and Annotations and comments (PdfDocumentOptions.AnnotationsEnabled). High (PdfDocumentOptions.EncryptionMode set to PdfDocumentEncryptionMode.RC128Bit) Adds the following to owner access rights supported by low level encryption: High quality printing (PdfDocumentOptions.HighQualityPrintEnabled) and adding/removing pages PdfDocumentOptions.AssemblyEnabled.

System.Object
   Leadtools.Forms.DocumentWriters.DocumentOptions
      Leadtools.Forms.DocumentWriters.PdfDocumentOptions

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

Reference