Cancel Property

Summary

A value indicating whether the image processing command should be canceled.

Syntax

Objective-C

C++/CLI

Java

Python

public bool Cancel { get; set; }

@property (nonatomic, assign) BOOL cancel;

public boolean getCancel() 
public void setCancel(boolean value)

public: 
property bool Cancel { 
   bool get(); 
   void set (    bool ); 
}

Cancel # get and set (RasterCommandProgressEventArgs)

Property Value

true if the image processing command should be canceled; false to continue normally.

Example

using Leadtools; 
using Leadtools.Codecs; 
using Leadtools.ImageProcessing; 
 
 
public void RasterCommandExample() 
{ 
	RasterCodecs codecs = new RasterCodecs(); 
 
	string srcFileName = Path.Combine(LEAD_VARS.ImagesDir, "Image1.cmp"); 
	string rotatedFileName = Path.Combine(LEAD_VARS.ImagesDir, "Image1_rotated.bmp"); 
	string flippedFileName = Path.Combine(LEAD_VARS.ImagesDir, "Image1_flipped.bmp"); 
 
	// Load the source image from disk 
	RasterImage image = codecs.Load(srcFileName); 
 
	// flip the image 
	FlipCommand flip = new FlipCommand(false); 
	RunCommand(image, flip); 
 
	// save the image 
	codecs.Save(image, flippedFileName, RasterImageFormat.Bmp, 24); 
 
	// rotate the image by 45 degrees 
	RotateCommand rotate = new RotateCommand(); 
	rotate.Angle = 45 * 100; 
	rotate.FillColor = RasterColor.FromKnownColor(RasterKnownColor.White); 
	rotate.Flags = RotateCommandFlags.Resize; 
	RunCommand(image, rotate); 
 
	// save the image 
	codecs.Save(image, rotatedFileName, RasterImageFormat.Bmp, 24); 
 
	// clean up 
	image.Dispose(); 
	codecs.Dispose(); 
} 
 
bool cancelAt50; 
 
void RunCommand(RasterImage image, RasterCommand command) 
{ 
	// subscribe to the progress event of the command 
	command.Progress += new EventHandler<RasterCommandProgressEventArgs>(command_Progress); 
 
	// if this is a flip command, we want to stop at 50 percent 
	cancelAt50 = command is FlipCommand; 
 
	// run the command 
	command.Run(image); 
 
	command.Progress -= new EventHandler<RasterCommandProgressEventArgs>(command_Progress); 
} 
 
void command_Progress(object sender, RasterCommandProgressEventArgs e) 
{ 
	// show the percentage 
	Console.WriteLine(e.Percent); 
 
	// check if we need to cancel the command at 50% 
	if (e.Percent == 50 && cancelAt50) 
		e.Cancel = true; 
} 
 
static class LEAD_VARS 
{ 
   public const string ImagesDir = @"C:\LEADTOOLS22\Resources\Images"; 
}

Requirements

Target Platforms

Reference

RasterCommandProgressEventArgs Class

RasterCommandProgressEventArgs Members

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Help Version 22.0.2023.5.16

Leadtools Assembly

Introduction

Getting Started

Namespaces

Leadtools Namespace

Leadtools.ImageProcessing Namespace

Assemblies