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DrawDocument Method

Summary

Renders the specified page of the PDF file.

Syntax

C++

public void DrawDocument( 
   IntPtr hdc, 
   int resolution, 
   int pageNumber 
)

Public Sub DrawDocument( _ 
   ByVal hdc As IntPtr, _ 
   ByVal resolution As Integer, _ 
   ByVal pageNumber As Integer _ 
)

public: 
void DrawDocument(  
   IntPtr hdc, 
   int resolution, 
   int pageNumber 
)

Parameters

hdc
The HDC where the PDF file should be rendered.

resolution
The resolution at which to render the PDF file.

pageNumber
The page number to be rendered.

Example

using Leadtools; 
using Leadtools.Codecs; 
using Leadtools.Controls; 
using Leadtools.Drawing; 
using Leadtools.ImageProcessing; 
using Leadtools.Pdf; 
using Leadtools.Svg; 
using Leadtools.WinForms; 
 
public void PDFFileDrawDocumentExample() 
{ 
   string sourceFileName = Path.Combine(LEAD_VARS.ImagesDir, @"Leadtools.pdf"); 
   string destinationFileName = Path.Combine(LEAD_VARS.ImagesDir, @"LEAD_DrawDocument.tif"); 
 
   PDFFile pdfFile = new PDFFile(sourceFileName); 
 
   // Create an image 
   using (RasterImage image = new RasterImage(RasterMemoryFlags.Conventional, 2550, 3300, 24, RasterByteOrder.Bgr, RasterViewPerspective.TopLeft, null, null, 0)) 
   { 
      // Make the image white 
      FillCommand fillCmd = new FillCommand(RasterColor.White); 
      fillCmd.Run(image); 
 
      // Get a handle to the drawing surface 
      IntPtr hDC = RasterImagePainter.CreateLeadDC(image); 
 
      // Render the image data 
      pdfFile.DrawDocument(hDC, 300, 1); 
 
      // Save the image in another format 
      using (RasterCodecs codecs = new RasterCodecs()) 
         codecs.Save(image, destinationFileName, RasterImageFormat.TifLzw, image.BitsPerPixel); 
 
      // Clean up 
      RasterImagePainter.DeleteLeadDC(hDC); 
   } 
} 
 
static class LEAD_VARS 
{ 
   public const string ImagesDir = @"C:\Users\Public\Documents\LEADTOOLS Images"; 
}

Imports Leadtools 
Imports Leadtools.Codecs 
Imports Leadtools.Pdf 
Imports Leadtools.WinForms 
Imports Leadtools.Svg 
Imports Leadtools.ImageProcessing 
 
Public Sub PDFFileDrawDocumentExample() 
   Dim sourceFileName As String = Path.Combine(LEAD_VARS.ImagesDir, "Leadtools.pdf") 
   Dim destinationFileName As String = Path.Combine(LEAD_VARS.ImagesDir, "LEAD_DrawDocument.tif") 
 
   Dim pdfFile As PDFFile = New PDFFile(sourceFileName) 
 
   ' Create an image 
   Using image As RasterImage = New RasterImage(RasterMemoryFlags.Conventional, 2550, 3300, 24, RasterByteOrder.Bgr, RasterViewPerspective.TopLeft, Nothing, Nothing, 0) 
      ' Make the image white 
      Dim fillCmd As FillCommand = New FillCommand(RasterColor.White) 
      fillCmd.Run(image) 
 
      ' Get a handle to the drawing surface 
      Dim hDC As IntPtr = RasterImagePainter.CreateLeadDC(image) 
 
      ' Render the image data 
      pdfFile.DrawDocument(hDC, 300, 1) 
 
      ' Save the image in another format 
      Using codecs As RasterCodecs = New RasterCodecs() 
         codecs.Save(image, destinationFileName, RasterImageFormat.TifLzw, image.BitsPerPixel) 
      End Using 
 
      ' Clean up 
      RasterImagePainter.DeleteLeadDC(hDC) 
   End Using 
End Sub 
 
Public NotInheritable Class LEAD_VARS 
   Public Const ImagesDir As String = "C:\Users\Public\Documents\LEADTOOLS Images" 
End Class

Requirements

Target Platforms

Reference

PDFFile Class

PDFFile Members

Help Version 19.0.2017.10.27

Leadtools.Pdf Assembly

Introduction

Getting Started

Namespaces

Leadtools.Pdf Namespace

Assemblies