Component must be a valid peer (when i remove frame.add(Component);)
- by boyd
i have this code here for creating and drawing array of pixels into an image
import javax.swing.JFrame;
import java.awt.Canvas;
import java.awt.Graphics;
import java.awt.image.BufferStrategy;
import java.awt.image.BufferedImage;
import java.awt.image.DataBufferInt;
public class test extends Canvas implements Runnable{
private static final long serialVersionUID = 1L;
public static int WIDTH = 800;
public static int HEIGHT = 600;
public boolean running=true;
public int[] pixels;
public BufferedImage img;
public static JFrame frame;
private Thread thread;
public static void main(String[] arg) {
test wind = new test();
frame = new JFrame("WINDOW");
frame.add(wind);
frame.setVisible(true);
frame.setSize(WIDTH, HEIGHT);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
wind.init();
}
public void init(){
thread=new Thread(this);
thread.start();
img=new BufferedImage(WIDTH, HEIGHT,BufferedImage.TYPE_INT_RGB);
pixels=((DataBufferInt)img.getRaster().getDataBuffer()).getData();
}
public void run(){
while(running){
render();
try {
thread.sleep(55);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}
public void render(){
BufferStrategy bs=this.getBufferStrategy();
if(bs==null){
createBufferStrategy(4);
return;
}
drawRect(0,0,150,150);
Graphics g= bs.getDrawGraphics();
g.drawImage(img, 0, 0, WIDTH, HEIGHT, null);
g.dispose();
bs.show();
}
private void drawRect(int x, int y, int w, int h) {
for(int i=x;i<w;i++)
for(int j=x;j<h;j++)
pixels[i+j*WIDTH]=346346;
} }
Why i get "Component must be a valid peer" error when i remove the line:
frame.add(wind);
Why I want to remove it? Because I want to create a frame using a class object(from another file) and use the code Window myWindow= new Window() to do exactly the same thing
BTW: who knows Java and understands what i wrote please send me a message with your skype or yahoo messenger id.I want to cooperate with you for a project (graphics engine for games)
