PdfDocumentProcessor.GetDXImages(PdfDocumentArea) Method

Retrieves the images found in the specified document area. Use this method in non-Windows environments.

Namespace: DevExpress.Pdf

Assembly: DevExpress.Docs.v23.2.dll

NuGet Package: DevExpress.Document.Processor

Declaration

C#

public IList<DXBitmap> GetDXImages(
    PdfDocumentArea area
)

VB.NET

Public Function GetDXImages(
    area As PdfDocumentArea
) As IList(Of DXBitmap)

Parameters

Name	Type	Description
area	PdfDocumentArea	A page area from which the images should be retrieved.

Returns

Type	Description
IList<DXBitmap>	A collection of DXBitmap objects.

Remarks

The overloaded GetDXImages method uses the page coordinate system. See the following topic for more information: Coordinate Systems.

The GetDXImages method requires that your application runs under Full Trust.

Example

The code below shows how to retrieve images from the specified page area:

View Example

Program.cs

using System;
using System.Collections.Generic;
using DevExpress.Drawing;
using DevExpress.Pdf;
// ...
static void Main(string[] args) {
    PdfDocumentProcessor processor = new PdfDocumentProcessor();
    processor.LoadDocument(@"..\\..\\Demo.pdf");

    int xCount = 8; 
    int yCount = 2;
    double cardWidth = 150.5; // Measured in points (equals 2.09 inches).
    double cardHeight = 442; // Measured in points (equals 6.138 inches).
    double xMargin = 122; // Measured in points (equals 1.694 inches).
    double yMargin = 77; // Measured in points (equals 1.069 inches).
    double yCoord = yMargin;

    for (int y = 0; y < yCount; y++, yCoord += cardHeight) {
        double xCoord = xMargin;
        for (int x = 0; x < xCount; x++, xCoord += cardWidth) {
            PdfDocumentArea area = new PdfDocumentArea(1,
                new PdfRectangle(xCoord, yCoord, xCoord + cardWidth, yCoord + cardHeight));
            IList<DXBitmap> bitmaps = processor.GetDXImages(area);
            if (bitmaps.Count != 0) {
                bitmaps[0].Save(String.Format(@"{0}_{1}.bmp", x, y), DXImageFormat.Bmp);
                bitmaps[0].Dispose();
            }
            Console.WriteLine(bitmaps.Count.ToString());
        }
    }
}

Program.vb

Imports DevExpress.Drawing
Imports DevExpress.Pdf

Shared Sub Main(ByVal args() As String)
    Dim processor As New PdfDocumentProcessor()
    processor.LoadDocument("..\\..\\Demo.pdf")

    Dim xCount As Integer = 8
    Dim yCount As Integer = 2
    Dim cardWidth As Double = 150.5 ' Measured in points (equals 2.09 inches).
    Dim cardHeight As Double = 442 ' Measured in points (equals 6.138 inches).
    Dim xMargin As Double = 122 ' Measured in points (equals 1.694 inches).
    Dim yMargin As Double = 77 ' Measured in points (equals 1.069 inches).
    Dim yCoord As Double = yMargin

    Dim y As Integer = 0
    Do While y < yCount
        Dim xCoord As Double = xMargin
        Dim x As Integer = 0
        Do While x < xCount
            Dim area As New PdfDocumentArea(1, New PdfRectangle(xCoord, yCoord, xCoord + cardWidth, yCoord + cardHeight))
            Dim bitmaps As IList(Of DXBitmap) = processor.GetDXImages(area)
            If bitmaps.Count <> 0 Then
                bitmaps(0).Save(String.Format("{0}_{1}.bmp", x, y), DXImageFormat.Bmp)
                bitmaps(0).Dispose()
            End If
            Console.WriteLine(bitmaps.Count.ToString())
            x += 1
            xCoord += cardWidth
        Loop
        y += 1
        yCoord += cardHeight
    Loop
End Sub