RasterImagePagesChangedAction Enumeration

Summary

Indicates whether pages are added, removed or inserted from a RasterImage object.

Syntax

Objective-C

C++/CLI

Java

Python

public enum RasterImagePagesChangedAction

typedef NS_ENUM(NSInteger, LTRasterImagePagesChangedAction)

public final class RasterImagePagesChangedAction 
    extends java.lang.Enum<RasterImagePagesChangedAction>

public enum class RasterImagePagesChangedAction

class RasterImagePagesChangedAction(Enum): 
   Added = 0 
   Removed = 1 
   Inserted = 2 
   Replaced = 3

Members

Value	Member	Description
0	Added	The pages being added.
1	Removed	The pages are removed.
2	Inserted	The pages being inserted.
3	Replaced	The pages being replaced.

Remarks

For more information, refer to RasterImagePagesChangedEventArgs

Example

using Leadtools; 
using Leadtools.Codecs; 
using Leadtools.ImageProcessing; 
using Leadtools.ImageProcessing.Core; 
using Leadtools.ImageProcessing.Color; 
using Leadtools.Dicom; 
using Leadtools.Drawing; 
using Leadtools.Controls; 
using Leadtools.Svg; 
 
 
public void PagesChangedExample() 
{ 
   RasterCodecs codecs = new RasterCodecs(); 
   codecs.Options.Load.AllPages = true; 
 
   string srcFileName1 = Path.Combine(LEAD_VARS.ImagesDir, "eye.gif"); 
   string srcFileName2 = Path.Combine(LEAD_VARS.ImagesDir, "image1.cmp"); 
 
   // Load the multi-page image 
   RasterImage srcImage = codecs.Load(srcFileName1); 
   srcImage.PagesChanged += new EventHandler<RasterImagePagesChangedEventArgs>(Image_PagesChanged); 
 
   // Show the number of pages in this file 
   Console.WriteLine("Pages in the image: {0}", srcImage.PageCount); 
 
   // Show and change the active page 
   Console.WriteLine("Active page: {0}", srcImage.Page); 
   srcImage.Page = 3; 
   Console.WriteLine("Active page: {0}", srcImage.Page); 
   srcImage.Page = 1; 
 
   // Load a single page image and add it to the end 
   RasterImage pageImage = codecs.Load(srcFileName2); 
   pageImage.PagesChanged += new EventHandler<RasterImagePagesChangedEventArgs>(Image_PagesChanged); 
   Console.WriteLine("Adding a single page"); 
   srcImage.AddPage(pageImage); 
   Console.WriteLine("Pages in the image: {0}", srcImage.PageCount); 
 
   // Load a multi page image and add a few pages to this image 
   pageImage = codecs.Load(srcFileName1); 
   pageImage.PagesChanged += new EventHandler<RasterImagePagesChangedEventArgs>(Image_PagesChanged); 
   Console.WriteLine("Adding multi-pages"); 
   srcImage.AddPages(pageImage, 1, 2); 
   Console.WriteLine("Pages in the image: {0}", srcImage.PageCount); 
 
   // Insert a page in the middle 
   Console.WriteLine("Inserting a page"); 
   srcImage.InsertPage(4, pageImage); 
   Console.WriteLine("Pages in the image: {0}", srcImage.PageCount); 
 
   // Insert the rest of the pages at the beginning 
   Console.WriteLine("Inserting pages"); 
   srcImage.InsertPages(0, pageImage, 1, -1); 
   Console.WriteLine("Pages in the image: {0}", srcImage.PageCount); 
 
   // Remove the first page 
   Console.WriteLine("Removing a page"); 
   srcImage.RemovePageAt(1); 
   Console.WriteLine("Pages in the image: {0}", srcImage.PageCount); 
 
   // Remove the last 3 pages 
   Console.WriteLine("Removing pages"); 
   srcImage.RemovePages(srcImage.PageCount - 3, -1); 
   Console.WriteLine("Pages in the image: {0}", srcImage.PageCount); 
 
   // Remove all the pages (leaves 1) 
   Console.WriteLine("Removing all pages"); 
   srcImage.RemoveAllPages(); 
   Console.WriteLine("Pages in the image: {0}", srcImage.PageCount); 
 
   srcImage.Dispose(); 
   codecs.Dispose(); 
} 
 
void Image_PagesChanged(object sender, RasterImagePagesChangedEventArgs e) 
{ 
   Console.WriteLine("Added = {0}, Index = {1}, Count = {2}", e.Action, e.StartIndex, e.Count); 
} 
 
static class LEAD_VARS 
{ 
   public const string ImagesDir = @"C:\LEADTOOLS23\Resources\Images"; 
}

Requirements

Target Platforms

Reference

Leadtools Namespace

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Help Version 23.0.2024.2.29

Leadtools Assembly

Introduction

Getting Started

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Leadtools Namespace

Leadtools.ImageProcessing Namespace

Assemblies