public void OnChanged(
RasterImageChangedEventArgs e
)
-(void)onChanged:(LTRasterImageChangedFlags)flags;
public void onChanged(
RasterImageChangedEvent e
);
public:
void OnChanged(
RasterImageChangedEventArgs^ e
)
def OnChanged(self,e):
e
A RasterImageChangedEventArgs that contains the event data.
Raising an event invokes the event handler through a delegate.
The OnChanged method also allows derived classes to handle the event without attaching a delegate. This is the preferred technique for handling the event in a derived class.
Notes to Inheritors: When overriding OnChanged in a derived class, be sure to call the base class's OnChanged method so that registered delegates receive the event.
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 ChangedExample()
{
RasterCodecs codecs = new RasterCodecs();
string srcFileName = Path.Combine(LEAD_VARS.ImagesDir, "Image1.cmp");
// Load the image
RasterImage img = codecs.Load(srcFileName);
// Subscribe to the Changed event of this image
img.Changed += new EventHandler<RasterImageChangedEventArgs>(img_Changed);
// Call a few methods and image processing commands that changes the image
Console.WriteLine("Calling FlipViewPerspective");
img.FlipViewPerspective(true);
Console.WriteLine("Calling RotateViewPerspective");
img.RotateViewPerspective(90);
Console.WriteLine("Calling FlipCommand");
FlipCommand flip = new FlipCommand(true);
flip.Run(img);
// Now disable firing the events and call the methods again
Console.WriteLine("Disabling the events");
img.DisableEvents();
Console.WriteLine("Calling FlipViewPerspective");
img.FlipViewPerspective(true);
Console.WriteLine("Calling RotateViewPerspective");
img.RotateViewPerspective(90);
Console.WriteLine("Calling FlipCommand while");
flip.Run(img);
// Re-enable the events and fire it manually
Console.WriteLine("Re-enabling the events");
img.EnableEvents();
Console.WriteLine("Firing the event manually");
RasterImageChangedFlags flags = RasterImageChangedFlags.Data | RasterImageChangedFlags.ViewPerspective;
RasterImageChangedEventArgs e = new RasterImageChangedEventArgs(flags);
img.OnChanged(e);
// Clean up
img.Changed -= new EventHandler<RasterImageChangedEventArgs>(img_Changed);
img.Dispose();
codecs.Dispose();
}
void img_Changed(object sender, RasterImageChangedEventArgs e)
{
// Show the changed flags
Console.WriteLine("Changed: {0}", e.Flags);
}
static class LEAD_VARS
{
public const string ImagesDir = @"C:\LEADTOOLS23\Resources\Images";
}
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.List;
import org.junit.*;
import org.junit.runner.JUnitCore;
import org.junit.runner.Result;
import org.junit.runner.notification.Failure;
import static org.junit.Assert.*;
import leadtools.*;
import leadtools.codecs.*;
import leadtools.imageprocessing.core.*;
import leadtools.svg.*;
import leadtools.imageprocessing.CloneCommand;
import leadtools.imageprocessing.FillCommand;
import leadtools.imageprocessing.FlipCommand;
import leadtools.imageprocessing.GrayscaleCommand;
import leadtools.imageprocessing.color.InvertCommand;
import leadtools.imageprocessing.color.PosterizeCommand;
public void changedExample() {
final String LEAD_VARS_IMAGES_DIR = "C:\\LEADTOOLS23\\Resources\\Images";
RasterCodecs codecs = new RasterCodecs();
String srcFileName = combine(LEAD_VARS_IMAGES_DIR, "Image1.cmp");
// Load the image
RasterImage img = codecs.load(srcFileName);
// Subscribe to the Changed event of this image
img.addChangedListener(img_Changed);
// Call a few methods and image processing commands that changes the image
System.out.println("Calling FlipViewPerspective");
img.flipViewPerspective(true);
System.out.println("Calling RotateViewPerspective");
img.rotateViewPerspective(90);
System.out.println("Calling FlipCommand");
FlipCommand flip = new FlipCommand(true);
flip.run(img);
// Now disable firing the events and call the methods again
System.out.println("Disabling the events");
img.disableEvents();
System.out.println("Calling FlipViewPerspective");
img.flipViewPerspective(true);
System.out.println("Calling RotateViewPerspective");
img.rotateViewPerspective(90);
System.out.println("Calling FlipCommand while");
flip.run(img);
// Re-enable the events and fire it manually
System.out.println("Re-enabling the events");
img.enableEvents();
System.out.println("Firing the event manually");
RasterImageChangedFlags flags = RasterImageChangedFlags
.forValue(RasterImageChangedFlags.DATA | RasterImageChangedFlags.VIEW_PERSPECTIVE);
RasterImageChangedEvent e = new RasterImageChangedEvent(flags,
RasterImageChangedFlags.DATA | RasterImageChangedFlags.VIEW_PERSPECTIVE);
img.onChanged(e);
// Save it
codecs.save(img, srcFileName, RasterImageFormat.CMP, 0);
// Clean up
img.removeChangedListener(img_Changed);
img.dispose();
codecs.dispose();
assertTrue("file unsuccessfully saved to " + srcFileName, (new File(srcFileName)).exists());
System.out.printf("File saved successfully to %s%n", srcFileName);
}
RasterImageChangedListener img_Changed = new RasterImageChangedListener() {
@Override
public void onImageChangedAlert(RasterImageChangedEvent arg0) {
System.out.printf("Changed: %s%n", arg0.getFlags());
}
};
Help Collections
Raster .NET | C API | C++ Class Library | HTML5 JavaScript
Document .NET | C API | C++ Class Library | HTML5 JavaScript
Medical .NET | C API | C++ Class Library | HTML5 JavaScript
Medical Web Viewer .NET
Multimedia
Direct Show .NET | C API | Filters
Media Foundation .NET | C API | Transforms
Supported Platforms
.NET, Java, Android, and iOS/macOS Assemblies
Imaging, Medical, and Document
C API/C++ Class Libraries
Imaging, Medical, and Document
HTML5 JavaScript Libraries
Imaging, Medical, and Document
Your email has been sent to support! Someone should be in touch! If your matter is urgent please come back into chat.
Chat Hours:
Monday - Friday, 8:30am to 6pm ET
Thank you for your feedback!
Please fill out the form again to start a new chat.
All agents are currently offline.
Chat Hours:
Monday - Friday
8:30AM - 6PM EST
To contact us please fill out this form and we will contact you via email.