Capturing Screen

[vineet kumar chaudhry]

Hi Java Lovers

I am using Robot class for capturing image which captures the screen as PrintScreen Command in our keyboard

The problem is :

It takes the screenshot of curent screen(all parts if some small sixe appl. are also open)

I am running my one of automated application in IE

The program will capture IE only if it is current window

I dont want this dependency .Is there any way to pass the parameters that this particular window should be captured

import java.awt.AWTException;
import java.awt.Rectangle;
import java.awt.Robot;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;

import javax.imageio.ImageIO;

public class Screenshot {
    
    public static void main(String[] args) {
        
        try {
            
            Robot robot = new Robot();
            // Capture the screen shot of the area of the screen defined by the rectangle
            BufferedImage bi=robot.createScreenCapture(new Rectangle(500,500));
            ImageIO.write(bi, "jpg", new File("C:/imageTest.jpg"));
            
        } catch (AWTException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}

[Rob Spoor]

You specify the part of the screen to capture using the Rectangle. If you need to capture a specific window then you need to know the bounds of that window. Bad news - you're not going to do this with only Java. You'll need a bit of JNI for this.

Fortunately for you I've already written a non-Java program that uses the Windows API to do similar things, so I can tell you the native calls to use:
- EnumWindows to go through all the windows on your system
- GetWindowText to, for a window handle, get its caption (you could use this to filter on)
- GetWindowThreadProcessId to, for a window handle, get its process ID (you could use this to filter on)
- GetWindowRect to, for a window handle, get its bounds

[vineet kumar chaudhry]

can you please send me the code....

[Rob Spoor]

We are NotACodeMill. Besides, it's C# and Delphi code, and you'd want to use C code for this.

[vineet kumar chaudhry]

I was talking about the non-java program which you have used !!!

[Darryl Burke]

So is Rob.

[vineet kumar chaudhry]

Sorry Rob

I got you know

[Rob Spoor]

Here are the MSDN pages about these functions:
EnumWindows
GetWindowText
GetWindowThreadProcessId
GetWindowRect